======================================
| [    8.723801][  T156] softirqs last disabled at (9359): __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767)
| [    8.723804][  T156] Preemption disabled at:
| [    8.723805][  T156] 0x0
| [    8.723814][  T156] Tainted: [W]=WARN
[    8.723815][  T156] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[    8.723816][  T156] Call Trace:
[    8.723818][  T156]  <TASK>
[    8.723819][  T156]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[    8.723826][  T156]  __might_resched.cold (kernel/sched/core.c:9234)
[    8.723830][  T156]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[    8.723834][  T156]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[    8.723838][  T156]  __kmalloc_noprof (./include/linux/sched/mm.h:322 (discriminator 2) mm/slub.c:4636 (discriminator 2) mm/slub.c:4974 (discriminator 2) mm/slub.c:5413 (discriminator 2) mm/slub.c:5439 (discriminator 2))
[    8.723840][  T156]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[    8.723847][  T156]  ? do_raw_spin_unlock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:32 ./include/asm-generic/qspinlock.h:58 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141)
[    8.723850][  T156]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[    8.723853][  T156]  put_chars (drivers/char/virtio_console.c:1176)
[    8.723856][  T156]  ? __send_to_port (drivers/char/virtio_console.c:654)
[    8.723857][  T156]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[    8.723860][  T156]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[    8.723866][  T156]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[    8.723873][  T156]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[    8.723876][  T156]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[    8.723877][  T156]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[    8.723881][  T156]  console_emit_next_record (kernel/printk/printk.c:3183)
[    8.723885][  T156]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[    8.723887][  T156]  ? console_flush_one_record (./include/linux/rcupdate.h:314 (discriminator 2) ./include/linux/srcu.h:439 (discriminator 2) kernel/printk/printk.c:291 (discriminator 2) kernel/printk/printk.c:3246 (discriminator 2))
[    8.723890][  T156]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[    8.723892][  T156]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[    8.723895][  T156]  console_flush_one_record (kernel/printk/printk.c:3268)
[    8.723899][  T156]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[    8.723901][  T156]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[    8.723906][  T156]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[    8.723909][  T156]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[    8.723911][  T156]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[    8.723913][  T156]  ? lock_acquire (./include/linux/srcutree.h:374 ./include/linux/srcu.h:541 ./include/linux/srcu.h:645 ./include/trace/events/lock.h:23 ./include/trace/events/lock.h:23 kernel/locking/lockdep.c:5871)
[    8.723916][  T156]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[    8.723918][  T156]  ? vprintk_emit (kernel/printk/printk.c:2478)
[    8.723921][  T156]  vprintk_emit (kernel/printk/printk.c:2479)
[    8.723923][  T156]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[    8.723926][  T156]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[    8.723930][  T156]  _printk (kernel/printk/printk.c:2504)
[    8.723933][  T156]  ? snapshot_read.cold (user.c:?)
[    8.723936][  T156]  ? do_raw_spin_lock (./include/linux/instrumented.h:55 ./include/linux/atomic/atomic-instrumented.h:1301 ./include/asm-generic/qspinlock.h:112 kernel/locking/spinlock_debug.c:116)
[    8.723939][  T156]  ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[    8.723943][  T156]  ? do_raw_spin_lock (./include/linux/instrumented.h:55 ./include/linux/atomic/atomic-instrumented.h:1301 ./include/asm-generic/qspinlock.h:112 kernel/locking/spinlock_debug.c:116)
[    8.723945][  T156]  do_exit.cold (kernel/exit.c:889 (discriminator 4) kernel/exit.c:1043 (discriminator 4))
[    8.723949][  T156]  ? exit_notify (kernel/exit.c:780)
[    8.723950][  T156]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[    8.723953][  T156]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[    8.723956][  T156]  do_group_exit (kernel/exit.c:1151)
[    8.723959][  T156]  __x64_sys_exit_group (kernel/exit.c:1162 kernel/exit.c:1160 kernel/exit.c:1160)
[    8.723961][  T156]  x64_sys_call (./arch/x86/include/generated/asm/syscalls_64.h:232)
[    8.723963][  T156]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[    8.723967][  T156]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[    8.723970][  T156]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[    8.723972][  T156] RIP: 0033:0x7f3e023cf1b8
[    8.723974][  T156] Code: Unable to access opcode bytes at 0x7f3e023cf18e.

Code starting with the faulting instruction
===========================================
[    8.723975][  T156] RSP: 002b:00007ffe741aa5c8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
[    8.723977][  T156] RAX: ffffffffffffffda RBX: 00007f3e024fff88 RCX: 00007f3e023cf1b8
[    8.723978][  T156] RDX: 00007f3e022e3e88 RSI: ffffffffffffffb0 RDI: 0000000000000000
[    8.723979][  T156] RBP: 00007ffe741aa620 R08: 00007ffe741aa570 R09: 0000000000001010
[    8.723980][  T156] R10: 00007ffe741aa460 R11: 0000000000000246 R12: 0000000000000002
[    8.723981][  T156] R13: 0000000000000000 R14: 00007f3e024fe680 R15: 00007f3e024fffa0
| [   10.008139][  T284] softirqs last disabled at (15758): __alloc_skb (./include/linux/bottom_half.h:20 (discriminator 2) net/core/skbuff.c:697 (discriminator 2))
| [   10.008142][  T284] Preemption disabled at:
| [   10.008142][  T284] vprintk_emit (kernel/printk/printk.c:2471)
| [   10.008151][  T284] Tainted: [W]=WARN
[   10.008151][  T284] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   10.008153][  T284] Call Trace:
[   10.008155][  T284]  <TASK>
[   10.008156][  T284]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   10.008162][  T284]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   10.008163][  T284]  __might_resched.cold (kernel/sched/core.c:9234)
[   10.008168][  T284]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   10.008172][  T284]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   10.008177][  T284]  __kmalloc_noprof (./include/linux/sched/mm.h:322 (discriminator 2) mm/slub.c:4636 (discriminator 2) mm/slub.c:4974 (discriminator 2) mm/slub.c:5413 (discriminator 2) mm/slub.c:5439 (discriminator 2))
[   10.008178][  T284]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   10.008185][  T284]  ? do_raw_spin_unlock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:32 ./include/asm-generic/qspinlock.h:58 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141)
[   10.008187][  T284]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   10.008191][  T284]  put_chars (drivers/char/virtio_console.c:1176)
[   10.008193][  T284]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   10.008194][  T284]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   10.008198][  T284]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   10.008203][  T284]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   10.008211][  T284]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   10.008213][  T284]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   10.008215][  T284]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   10.008219][  T284]  console_emit_next_record (kernel/printk/printk.c:3183)
[   10.008223][  T284]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   10.008225][  T284]  ? console_flush_one_record (./include/linux/rcupdate.h:314 (discriminator 2) ./include/linux/srcu.h:439 (discriminator 2) kernel/printk/printk.c:291 (discriminator 2) kernel/printk/printk.c:3246 (discriminator 2))
[   10.008228][  T284]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   10.008230][  T284]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   10.008234][  T284]  console_flush_one_record (kernel/printk/printk.c:3268)
[   10.008238][  T284]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   10.008240][  T284]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   10.008245][  T284]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   10.008248][  T284]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   10.008250][  T284]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   10.008251][  T284]  ? lock_acquire (./include/linux/srcutree.h:374 ./include/linux/srcu.h:541 ./include/linux/srcu.h:645 ./include/trace/events/lock.h:23 ./include/trace/events/lock.h:23 kernel/locking/lockdep.c:5871)
[   10.008255][  T284]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   10.008257][  T284]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   10.008259][  T284]  vprintk_emit (kernel/printk/printk.c:2479)
[   10.008262][  T284]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   10.008264][  T284]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   10.008267][  T284]  ? mark_held_locks (kernel/locking/lockdep.c:4341)
[   10.008270][  T284]  _printk (kernel/printk/printk.c:2504)
[   10.008274][  T284]  ? snapshot_read.cold (user.c:?)
[   10.008277][  T284]  ? br_multicast_flood (??:?)
[   10.008281][  T284]  ? do_setlink.isra.0 (net/core/rtnetlink.c:3273 (discriminator 1))
[   10.008282][  T284]  ? rtnl_newlink (net/core/rtnetlink.c:4215)
[   10.008283][  T284]  ? rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   10.008288][  T284]  br_set_state (net/bridge/br_stp.c:57 (discriminator 2))
[   10.008292][  T284]  br_init_port (net/bridge/br_stp_if.c:39)
[   10.008295][  T284]  new_nbp (net/bridge/br_if.c:449)
[   10.008298][  T284]  br_add_if (net/bridge/br_if.c:592)
[   10.008301][  T284]  ? is_bpf_text_address (./include/linux/rcupdate.h:882 kernel/bpf/core.c:751)
[   10.008304][  T284]  ? kernel_text_address (kernel/extable.c:125 kernel/extable.c:94)
[   10.008310][  T284]  do_set_master (net/core/rtnetlink.c:3071)
[   10.008313][  T284]  do_setlink.isra.0 (net/core/rtnetlink.c:3273 (discriminator 1))
[   10.008316][  T284]  ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1))
[   10.008320][  T284]  ? rtnl_link_get_size (net/core/rtnetlink.c:747)
[   10.008321][  T284]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380)
[   10.008324][  T284]  ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2))
[   10.008327][  T284]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   10.008329][  T284]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   10.008331][  T284]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   10.008333][  T284]  ? kasan_save_stack (mm/kasan/common.c:58)
[   10.008335][  T284]  ? kasan_save_stack (mm/kasan/common.c:57)
[   10.008336][  T284]  ? kasan_save_track (mm/kasan/common.c:78)
[   10.008338][  T284]  ? __kasan_kmalloc (mm/kasan/common.c:398 mm/kasan/common.c:415)
[   10.008340][  T284]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   10.008342][  T284]  ? snd_ac97_proc_read_main (sound/pci/ac97/ac97_proc.c:320)
[   10.008344][  T284]  ? ___sys_sendmsg (net/socket.c:2758)
[   10.008348][  T284]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   10.008350][  T284]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   10.008353][  T284]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   10.008354][  T284]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   10.008356][  T284]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   10.008357][  T284]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   10.008359][  T284]  ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22))
[   10.008361][  T284]  ? __mutex_lock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:3188 kernel/locking/mutex.c:89 kernel/locking/mutex.c:134 kernel/locking/mutex.c:649 kernel/locking/mutex.c:821)
[   10.008363][  T284]  ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1))
[   10.008365][  T284]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   10.008368][  T284]  ? ww_mutex_lock (kernel/locking/mutex.c:934)
[   10.008370][  T284]  ? nla_get_range_signed (lib/nlattr.c:270)
[   10.008374][  T284]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   10.008377][  T284]  ? __rtnl_newlink (net/core/rtnetlink.c:4063)
[   10.008382][  T284]  rtnl_newlink (net/core/rtnetlink.c:4215)
[   10.008387][  T284]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   10.008389][  T284]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   10.008394][  T284]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   10.008395][  T284]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   10.008398][  T284]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   10.008399][  T284]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   10.008403][  T284]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   10.008405][  T284]  rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   10.008408][  T284]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   10.008409][  T284]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   10.008414][  T284]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   10.008416][  T284]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   10.008419][  T284]  netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   10.008422][  T284]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   10.008425][  T284]  ? netlink_ack (./include/linux/skbuff.h:2718)
[   10.008433][  T284]  ? netlink_deliver_tap (./include/linux/rcupdate.h:319 (discriminator 2) ./include/linux/rcupdate.h:880 (discriminator 2) ./include/net/netns/generic.h:48 (discriminator 2) net/netlink/af_netlink.c:334 (discriminator 2))
[   10.008435][  T284]  ? netlink_deliver_tap (./include/linux/rcupdate.h:319 (discriminator 2) ./include/linux/rcupdate.h:880 (discriminator 2) net/netlink/af_netlink.c:341 (discriminator 2))
[   10.008440][  T284]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   10.008444][  T284]  ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   10.008446][  T284]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   10.008450][  T284]  netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   10.008454][  T284]  ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7))
[   10.008458][  T284]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   10.008460][  T284]  ? __import_iovec (lib/iov_iter.c:1358 lib/iov_iter.c:1373)
[   10.008465][  T284]  __sock_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4))
[   10.008467][  T284]  ____sys_sendmsg (net/socket.c:2713)
[   10.008470][  T284]  ? copy_msghdr_from_user (net/socket.c:2650)
[   10.008472][  T284]  ? sock_write_iter (net/socket.c:1269)
[   10.008473][  T284]  ? move_addr_to_kernel (net/socket.c:258)
[   10.008480][  T284]  ___sys_sendmsg (net/socket.c:2767)
[   10.008483][  T284]  ? copy_msghdr_from_user (net/socket.c:2619)
[   10.008498][  T284]  __sys_sendmsg (net/socket.c:2799)
[   10.008501][  T284]  ? __sys_sendmsg_sock (net/socket.c:2780)
[   10.008507][  T284]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   10.008510][  T284]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   10.008513][  T284]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   10.008516][  T284]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   10.008518][  T284] RIP: 0033:0x7f4cb89a254e
[   10.008521][  T284] Code: 4d 89 d8 e8 b4 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 03 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 b4 bd 00 00       	call   0xbdbc
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 03 ff ff ff       	call   0xffffffffffffff3c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 03 ff ff ff       	call   0xffffffffffffff12
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[   10.008523][  T284] RSP: 002b:00007fff891a4920 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
[   10.008526][  T284] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007f4cb89a254e
[   10.008527][  T284] RDX: 0000000000000000 RSI: 00007fff891a49d0 RDI: 0000000000000005
[   10.008528][  T284] RBP: 00007fff891a4930 R08: 0000000000000000 R09: 0000000000000000
[   10.008529][  T284] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a911b67
[   10.008530][  T284] R13: 00000000004a1620 R14: 0000000000000000 R15: 00007fff891a5090
| [   11.251968][   T38] softirqs last disabled at (69224): br_port_carrier_check (./include/linux/spinlock.h:353 net/bridge/br_if.c:87)
| [   11.251970][   T38] Preemption disabled at:
| [   11.251971][   T38] 0x0
| [   11.251981][   T38] Tainted: [W]=WARN
[   11.251981][   T38] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   11.251983][   T38] Workqueue: events_unbound linkwatch_event
[   11.251986][   T38] Call Trace:
[   11.251988][   T38]  <TASK>
[   11.251989][   T38]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   11.251996][   T38]  __might_resched.cold (kernel/sched/core.c:9234)
[   11.252000][   T38]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   11.252004][   T38]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   11.252009][   T38]  __kmalloc_noprof (./include/linux/sched/mm.h:322 (discriminator 2) mm/slub.c:4636 (discriminator 2) mm/slub.c:4974 (discriminator 2) mm/slub.c:5413 (discriminator 2) mm/slub.c:5439 (discriminator 2))
[   11.252010][   T38]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   11.252017][   T38]  ? do_raw_spin_unlock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:32 ./include/asm-generic/qspinlock.h:58 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141)
[   11.252020][   T38]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   11.252024][   T38]  put_chars (drivers/char/virtio_console.c:1176)
[   11.252026][   T38]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   11.252027][   T38]  ? check_prev_add (kernel/locking/lockdep.c:3185)
[   11.252032][   T38]  ? validate_chain (kernel/locking/lockdep.c:159 kernel/locking/lockdep.c:191 kernel/locking/lockdep.c:3928)
[   11.252036][   T38]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   11.252039][   T38]  ? mark_usage (kernel/locking/lockdep.c:4690)
[   11.252041][   T38]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   11.252043][   T38]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   11.252047][   T38]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   11.252049][   T38]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   11.252054][   T38]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   11.252058][   T38]  console_emit_next_record (kernel/printk/printk.c:3183)
[   11.252062][   T38]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   11.252064][   T38]  ? console_flush_one_record (./include/linux/rcupdate.h:314 (discriminator 2) ./include/linux/srcu.h:439 (discriminator 2) kernel/printk/printk.c:291 (discriminator 2) kernel/printk/printk.c:3246 (discriminator 2))
[   11.252067][   T38]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   11.252070][   T38]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   11.252074][   T38]  console_flush_one_record (kernel/printk/printk.c:3268)
[   11.252078][   T38]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   11.252080][   T38]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   11.252085][   T38]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   11.252088][   T38]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   11.252090][   T38]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   11.252091][   T38]  ? lock_acquire (./include/linux/srcutree.h:374 ./include/linux/srcu.h:541 ./include/linux/srcu.h:645 ./include/trace/events/lock.h:23 ./include/trace/events/lock.h:23 kernel/locking/lockdep.c:5871)
[   11.252095][   T38]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   11.252097][   T38]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   11.252100][   T38]  vprintk_emit (kernel/printk/printk.c:2479)
[   11.252103][   T38]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   11.252108][   T38]  _printk (kernel/printk/printk.c:2504)
[   11.252112][   T38]  ? snapshot_read.cold (user.c:?)
[   11.252117][   T38]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   11.252121][   T38]  br_set_state (net/bridge/br_stp.c:57 (discriminator 2))
[   11.252125][   T38]  br_init_port (net/bridge/br_stp_if.c:39)
[   11.252127][   T38]  br_stp_enable_port (net/bridge/br_stp_if.c:93)
[   11.252129][   T38]  br_port_carrier_check (net/bridge/br_if.c:90)
[   11.252133][   T38]  br_device_event (net/bridge/br.c:101)
[   11.252137][   T38]  ? packet_sendmsg_spkt (af_packet.c:?)
[   11.252138][   T38]  ? nlmsg_notify (./include/net/netlink.h:1165 ./include/net/netlink.h:1184 net/netlink/af_netlink.c:2599)
[   11.252145][   T38]  notifier_call_chain (kernel/notifier.c:85)
[   11.252151][   T38]  netif_state_change (net/core/dev.c:1625)
[   11.252155][   T38]  ? call_netdevice_notifiers_info (./include/net/net_namespace.h:422 (discriminator 7))
[   11.252160][   T38]  ? linkwatch_do_dev (net/core/link_watch.c:182 net/core/link_watch.c:166)
[   11.252162][   T38]  __linkwatch_run_queue (net/core/link_watch.c:240)
[   11.252165][   T38]  ? linkwatch_do_dev (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   11.252168][   T38]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   11.252172][   T38]  linkwatch_event (net/core/link_watch.c:314 (discriminator 11))
[   11.252174][   T38]  ? __linkwatch_run_queue (net/core/link_watch.c:213)
[   11.252177][   T38]  process_one_work (kernel/workqueue.c:3387)
[   11.252184][   T38]  ? __queue_delayed_work (kernel/workqueue.c:2622)
[   11.252187][   T38]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   11.252194][   T38]  worker_thread (kernel/workqueue.c:3470 kernel/workqueue.c:3551)
[   11.252201][   T38]  ? rescuer_thread (./include/linux/list.h:419 (discriminator 3))
[   11.252203][   T38]  kthread (kernel/kthread.c:436)
[   11.252206][   T38]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[   11.252209][   T38]  ? kthread_affine_preferred (kernel/kthread.c:857)
[   11.252212][   T38]  ret_from_fork (arch/x86/kernel/process.c:158)
[   11.252216][   T38]  ? arch_exit_to_user_mode_prepare.isra.0 (arch/x86/entry/vdso/vma.c:80 (discriminator 1))
[   11.252219][   T38]  ? __switch_to (arch/x86/kernel/process_64.c:403 arch/x86/kernel/process_64.c:663)
[   11.252223][   T38]  ? kthread_affine_preferred (kernel/kthread.c:857)
[   11.252226][   T38]  ret_from_fork_asm (arch/x86/entry/entry_64.S:245)
| [   12.292308][  T536] softirqs last disabled at (27768): br_device_event (./include/linux/spinlock.h:353 net/bridge/br.c:109)
| [   12.292310][  T536] Preemption disabled at:
| [   12.292311][  T536] 0x0
| [   12.292321][  T536] Tainted: [W]=WARN
[   12.292322][  T536] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   12.292323][  T536] Call Trace:
[   12.292325][  T536]  <TASK>
[   12.292326][  T536]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   12.292333][  T536]  __might_resched.cold (kernel/sched/core.c:9234)
[   12.292337][  T536]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   12.292341][  T536]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   12.292346][  T536]  __kmalloc_noprof (./include/linux/sched/mm.h:322 (discriminator 2) mm/slub.c:4636 (discriminator 2) mm/slub.c:4974 (discriminator 2) mm/slub.c:5413 (discriminator 2) mm/slub.c:5439 (discriminator 2))
[   12.292347][  T536]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   12.292354][  T536]  ? do_raw_spin_unlock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:32 ./include/asm-generic/qspinlock.h:58 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141)
[   12.292357][  T536]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   12.292361][  T536]  put_chars (drivers/char/virtio_console.c:1176)
[   12.292363][  T536]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   12.292369][  T536]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   12.292377][  T536]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   12.292380][  T536]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   12.292384][  T536]  console_emit_next_record (kernel/printk/printk.c:3183)
[   12.292388][  T536]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   12.292390][  T536]  ? console_flush_one_record (./include/linux/rcupdate.h:314 (discriminator 2) ./include/linux/srcu.h:439 (discriminator 2) kernel/printk/printk.c:291 (discriminator 2) kernel/printk/printk.c:3246 (discriminator 2))
[   12.292393][  T536]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   12.292396][  T536]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   12.292400][  T536]  console_flush_one_record (kernel/printk/printk.c:3268)
[   12.292404][  T536]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   12.292406][  T536]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   12.292411][  T536]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   12.292414][  T536]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   12.292416][  T536]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   12.292417][  T536]  ? lock_acquire (./include/linux/srcutree.h:374 ./include/linux/srcu.h:541 ./include/linux/srcu.h:645 ./include/trace/events/lock.h:23 ./include/trace/events/lock.h:23 kernel/locking/lockdep.c:5871)
[   12.292421][  T536]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   12.292423][  T536]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   12.292425][  T536]  vprintk_emit (kernel/printk/printk.c:2479)
[   12.292428][  T536]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   12.292430][  T536]  ? mark_held_locks (kernel/locking/lockdep.c:4341)
[   12.292434][  T536]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   12.292436][  T536]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   12.292440][  T536]  _printk (kernel/printk/printk.c:2504)
[   12.292444][  T536]  ? snapshot_read.cold (user.c:?)
[   12.292451][  T536]  br_set_state (net/bridge/br_stp.c:57 (discriminator 2))
[   12.292456][  T536]  br_stp_disable_port (net/bridge/br_stp_if.c:106)
[   12.292459][  T536]  br_device_event (net/bridge/br.c:111)
[   12.292461][  T536]  ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:211 (discriminator 1) kernel/locking/spinlock.c:221 (discriminator 1))
[   12.292465][  T536]  ? packet_sendmsg_spkt (af_packet.c:?)
[   12.292470][  T536]  notifier_call_chain (kernel/notifier.c:85)
[   12.292476][  T536]  __dev_notify_flags (net/core/dev.c:2313 net/core/dev.c:2327 net/core/dev.c:9855)
[   12.292481][  T536]  ? netif_change_name (net/core/dev.c:1517)
[   12.292485][  T536]  ? netif_set_allmulti (./include/net/netdev_lock.h:33)
[   12.292488][  T536]  ? __kernel_text_address (kernel/extable.c:79)
[   12.292490][  T536]  ? write_profile (profile.c:?)
[   12.292495][  T536]  netif_change_flags (net/core/dev.c:9882)
[   12.292499][  T536]  do_setlink.isra.0 (net/core/rtnetlink.c:3266 (discriminator 1))
[   12.292502][  T536]  ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1))
[   12.292504][  T536]  ? rtnl_link_get_size (net/core/rtnetlink.c:747)
[   12.292506][  T536]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380)
[   12.292507][  T536]  ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2))
[   12.292511][  T536]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   12.292513][  T536]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   12.292515][  T536]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   12.292517][  T536]  ? kasan_save_stack (mm/kasan/common.c:58)
[   12.292519][  T536]  ? kasan_save_stack (mm/kasan/common.c:57)
[   12.292520][  T536]  ? kasan_save_track (mm/kasan/common.c:78)
[   12.292522][  T536]  ? __kasan_kmalloc (mm/kasan/common.c:398 mm/kasan/common.c:415)
[   12.292524][  T536]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   12.292526][  T536]  ? snd_ac97_proc_read_main (sound/pci/ac97/ac97_proc.c:320)
[   12.292529][  T536]  ? ___sys_sendmsg (net/socket.c:2758)
[   12.292532][  T536]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   12.292534][  T536]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   12.292537][  T536]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   12.292539][  T536]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   12.292540][  T536]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   12.292541][  T536]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   12.292543][  T536]  ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22))
[   12.292545][  T536]  ? __mutex_lock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:3188 kernel/locking/mutex.c:89 kernel/locking/mutex.c:134 kernel/locking/mutex.c:649 kernel/locking/mutex.c:821)
[   12.292547][  T536]  ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1))
[   12.292548][  T536]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   12.292552][  T536]  ? ww_mutex_lock (kernel/locking/mutex.c:934)
[   12.292555][  T536]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   12.292557][  T536]  ? __rtnl_newlink (net/core/rtnetlink.c:4063)
[   12.292562][  T536]  rtnl_newlink (net/core/rtnetlink.c:4215)
[   12.292568][  T536]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   12.292570][  T536]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   12.292574][  T536]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   12.292576][  T536]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   12.292578][  T536]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   12.292580][  T536]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   12.292584][  T536]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   12.292586][  T536]  rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   12.292589][  T536]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   12.292590][  T536]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   12.292594][  T536]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   12.292596][  T536]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   12.292600][  T536]  netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   12.292603][  T536]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   12.292606][  T536]  ? netlink_ack (./include/linux/skbuff.h:2718)
[   12.292612][  T536]  ? netlink_deliver_tap (./include/linux/rcupdate.h:319 (discriminator 2) ./include/linux/rcupdate.h:880 (discriminator 2) ./include/net/netns/generic.h:48 (discriminator 2) net/netlink/af_netlink.c:334 (discriminator 2))
[   12.292614][  T536]  ? netlink_deliver_tap (./include/linux/rcupdate.h:319 (discriminator 2) ./include/linux/rcupdate.h:880 (discriminator 2) net/netlink/af_netlink.c:341 (discriminator 2))
[   12.292618][  T536]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   12.292622][  T536]  ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   12.292625][  T536]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   12.292629][  T536]  netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   12.292633][  T536]  ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7))
[   12.292637][  T536]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   12.292638][  T536]  ? __import_iovec (lib/iov_iter.c:1358 lib/iov_iter.c:1373)
[   12.292643][  T536]  __sock_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4))
[   12.292646][  T536]  ____sys_sendmsg (net/socket.c:2713)
[   12.292649][  T536]  ? copy_msghdr_from_user (net/socket.c:2650)
[   12.292651][  T536]  ? sock_write_iter (net/socket.c:1269)
[   12.292652][  T536]  ? move_addr_to_kernel (net/socket.c:258)
[   12.292660][  T536]  ___sys_sendmsg (net/socket.c:2767)
[   12.292662][  T536]  ? copy_msghdr_from_user (net/socket.c:2619)
[   12.292678][  T536]  __sys_sendmsg (net/socket.c:2799)
[   12.292681][  T536]  ? __sys_sendmsg_sock (net/socket.c:2780)
[   12.292687][  T536]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   12.292690][  T536]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   12.292693][  T536]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   12.292696][  T536]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   12.292698][  T536] RIP: 0033:0x7f7a110af54e
[   12.292700][  T536] Code: 4d 89 d8 e8 b4 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 03 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 b4 bd 00 00       	call   0xbdbc
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 03 ff ff ff       	call   0xffffffffffffff3c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 03 ff ff ff       	call   0xffffffffffffff12
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[   12.292702][  T536] RSP: 002b:00007ffd20490e60 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
[   12.292705][  T536] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f7a110af54e
[   12.292706][  T536] RDX: 0000000000000000 RSI: 00007ffd20490f10 RDI: 0000000000000005
[   12.292707][  T536] RBP: 00007ffd20490e70 R08: 0000000000000000 R09: 0000000000000000
[   12.292708][  T536] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a911b69
[   12.292708][  T536] R13: 00000000004a1620 R14: 0000000000000000 R15: 00007ffd204915d0
| [   13.390655][  T639] softirqs last disabled at (23008): br_device_event (./include/linux/spinlock.h:353 net/bridge/br.c:109)
| [   13.390657][  T639] Preemption disabled at:
| [   13.390658][  T639] 0x0
| [   13.390668][  T639] Tainted: [W]=WARN
[   13.390668][  T639] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   13.390670][  T639] Call Trace:
[   13.390671][  T639]  <TASK>
[   13.390673][  T639]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   13.390679][  T639]  __might_resched.cold (kernel/sched/core.c:9234)
[   13.390684][  T639]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   13.390688][  T639]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   13.390692][  T639]  __kmalloc_noprof (./include/linux/sched/mm.h:322 (discriminator 2) mm/slub.c:4636 (discriminator 2) mm/slub.c:4974 (discriminator 2) mm/slub.c:5413 (discriminator 2) mm/slub.c:5439 (discriminator 2))
[   13.390694][  T639]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   13.390700][  T639]  ? do_raw_spin_unlock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:32 ./include/asm-generic/qspinlock.h:58 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141)
[   13.390703][  T639]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   13.390707][  T639]  put_chars (drivers/char/virtio_console.c:1176)
[   13.390709][  T639]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   13.390715][  T639]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   13.390723][  T639]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   13.390726][  T639]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   13.390730][  T639]  console_emit_next_record (kernel/printk/printk.c:3183)
[   13.390734][  T639]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   13.390736][  T639]  ? console_flush_one_record (./include/linux/rcupdate.h:314 (discriminator 2) ./include/linux/srcu.h:439 (discriminator 2) kernel/printk/printk.c:291 (discriminator 2) kernel/printk/printk.c:3246 (discriminator 2))
[   13.390739][  T639]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   13.390742][  T639]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   13.390746][  T639]  console_flush_one_record (kernel/printk/printk.c:3268)
[   13.390755][  T639]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   13.390756][  T639]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   13.390762][  T639]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   13.390765][  T639]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   13.390766][  T639]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   13.390768][  T639]  ? lock_acquire (./include/linux/srcutree.h:374 ./include/linux/srcu.h:541 ./include/linux/srcu.h:645 ./include/trace/events/lock.h:23 ./include/trace/events/lock.h:23 kernel/locking/lockdep.c:5871)
[   13.390772][  T639]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   13.390773][  T639]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   13.390776][  T639]  vprintk_emit (kernel/printk/printk.c:2479)
[   13.390779][  T639]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   13.390780][  T639]  ? mark_held_locks (kernel/locking/lockdep.c:4341)
[   13.390783][  T639]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   13.390785][  T639]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   13.390789][  T639]  _printk (kernel/printk/printk.c:2504)
[   13.390793][  T639]  ? snapshot_read.cold (user.c:?)
[   13.390800][  T639]  br_set_state (net/bridge/br_stp.c:57 (discriminator 2))
[   13.390805][  T639]  br_stp_disable_port (net/bridge/br_stp_if.c:106)
[   13.390808][  T639]  br_device_event (net/bridge/br.c:111)
[   13.390810][  T639]  ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:211 (discriminator 1) kernel/locking/spinlock.c:221 (discriminator 1))
[   13.390814][  T639]  ? packet_sendmsg_spkt (af_packet.c:?)
[   13.390820][  T639]  notifier_call_chain (kernel/notifier.c:85)
[   13.390825][  T639]  __dev_notify_flags (net/core/dev.c:2313 net/core/dev.c:2327 net/core/dev.c:9855)
[   13.390831][  T639]  ? netif_change_name (net/core/dev.c:1517)
[   13.390834][  T639]  ? netif_set_allmulti (./include/net/netdev_lock.h:33)
[   13.390837][  T639]  ? __kernel_text_address (kernel/extable.c:79)
[   13.390840][  T639]  ? write_profile (profile.c:?)
[   13.390845][  T639]  netif_change_flags (net/core/dev.c:9882)
[   13.390849][  T639]  do_setlink.isra.0 (net/core/rtnetlink.c:3266 (discriminator 1))
[   13.390852][  T639]  ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1))
[   13.390854][  T639]  ? rtnl_link_get_size (net/core/rtnetlink.c:747)
[   13.390855][  T639]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380)
[   13.390857][  T639]  ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2))
[   13.390860][  T639]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   13.390862][  T639]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   13.390864][  T639]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   13.390866][  T639]  ? kasan_save_stack (mm/kasan/common.c:58)
[   13.390869][  T639]  ? kasan_save_stack (mm/kasan/common.c:57)
[   13.390870][  T639]  ? kasan_save_track (mm/kasan/common.c:78)
[   13.390871][  T639]  ? __kasan_kmalloc (mm/kasan/common.c:398 mm/kasan/common.c:415)
[   13.390873][  T639]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   13.390875][  T639]  ? snd_ac97_proc_read_main (sound/pci/ac97/ac97_proc.c:320)
[   13.390878][  T639]  ? ___sys_sendmsg (net/socket.c:2758)
[   13.390882][  T639]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   13.390884][  T639]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   13.390887][  T639]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   13.390888][  T639]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   13.390890][  T639]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   13.390891][  T639]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   13.390893][  T639]  ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22))
[   13.390895][  T639]  ? __mutex_lock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:3188 kernel/locking/mutex.c:89 kernel/locking/mutex.c:134 kernel/locking/mutex.c:649 kernel/locking/mutex.c:821)
[   13.390896][  T639]  ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1))
[   13.390898][  T639]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   13.390901][  T639]  ? ww_mutex_lock (kernel/locking/mutex.c:934)
[   13.390905][  T639]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   13.390907][  T639]  ? __rtnl_newlink (net/core/rtnetlink.c:4063)
[   13.390912][  T639]  rtnl_newlink (net/core/rtnetlink.c:4215)
[   13.390917][  T639]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   13.390919][  T639]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   13.390924][  T639]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   13.390925][  T639]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   13.390928][  T639]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   13.390929][  T639]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   13.390933][  T639]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   13.390935][  T639]  rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   13.390938][  T639]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   13.390939][  T639]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   13.390944][  T639]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   13.390946][  T639]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   13.390949][  T639]  netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   13.390952][  T639]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   13.390955][  T639]  ? netlink_ack (./include/linux/skbuff.h:2718)
[   13.390961][  T639]  ? netlink_deliver_tap (./include/linux/rcupdate.h:319 (discriminator 2) ./include/linux/rcupdate.h:880 (discriminator 2) ./include/net/netns/generic.h:48 (discriminator 2) net/netlink/af_netlink.c:334 (discriminator 2))
[   13.390963][  T639]  ? netlink_deliver_tap (./include/linux/rcupdate.h:319 (discriminator 2) ./include/linux/rcupdate.h:880 (discriminator 2) net/netlink/af_netlink.c:341 (discriminator 2))
[   13.390968][  T639]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   13.390972][  T639]  ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   13.390974][  T639]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   13.390978][  T639]  netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   13.390982][  T639]  ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7))
[   13.390986][  T639]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   13.390988][  T639]  ? __import_iovec (lib/iov_iter.c:1358 lib/iov_iter.c:1373)
[   13.390993][  T639]  __sock_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4))
[   13.390996][  T639]  ____sys_sendmsg (net/socket.c:2713)
[   13.390998][  T639]  ? copy_msghdr_from_user (net/socket.c:2650)
[   13.391000][  T639]  ? sock_write_iter (net/socket.c:1269)
[   13.391001][  T639]  ? move_addr_to_kernel (net/socket.c:258)
[   13.391009][  T639]  ___sys_sendmsg (net/socket.c:2767)
[   13.391011][  T639]  ? copy_msghdr_from_user (net/socket.c:2619)
[   13.391027][  T639]  __sys_sendmsg (net/socket.c:2799)
[   13.391030][  T639]  ? __sys_sendmsg_sock (net/socket.c:2780)
[   13.391036][  T639]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   13.391039][  T639]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   13.391042][  T639]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   13.391045][  T639]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   13.391047][  T639] RIP: 0033:0x7f5bb7c7654e
[   13.391049][  T639] Code: 4d 89 d8 e8 b4 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 03 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 b4 bd 00 00       	call   0xbdbc
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 03 ff ff ff       	call   0xffffffffffffff3c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 03 ff ff ff       	call   0xffffffffffffff12
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[   13.391051][  T639] RSP: 002b:00007ffe387db690 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
[   13.391053][  T639] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f5bb7c7654e
[   13.391055][  T639] RDX: 0000000000000000 RSI: 00007ffe387db740 RDI: 0000000000000005
[   13.391056][  T639] RBP: 00007ffe387db6a0 R08: 0000000000000000 R09: 0000000000000000
[   13.391056][  T639] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a911b6a
[   13.391057][  T639] R13: 00000000004a1620 R14: 0000000000000000 R15: 00007ffe387dbe00
| [   14.566810][  T777] softirqs last disabled at (15582): br_device_event (./include/linux/spinlock.h:353 net/bridge/br.c:119)
| [   14.566812][  T777] Preemption disabled at:
| [   14.566813][  T777] 0x0
| [   14.566822][  T777] Tainted: [W]=WARN
[   14.566823][  T777] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   14.566825][  T777] Call Trace:
[   14.566826][  T777]  <TASK>
[   14.566828][  T777]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   14.566834][  T777]  __might_resched.cold (kernel/sched/core.c:9234)
[   14.566839][  T777]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   14.566843][  T777]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   14.566847][  T777]  __kmalloc_noprof (./include/linux/sched/mm.h:322 (discriminator 2) mm/slub.c:4636 (discriminator 2) mm/slub.c:4974 (discriminator 2) mm/slub.c:5413 (discriminator 2) mm/slub.c:5439 (discriminator 2))
[   14.566849][  T777]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   14.566855][  T777]  ? do_raw_spin_unlock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:32 ./include/asm-generic/qspinlock.h:58 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141)
[   14.566858][  T777]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   14.566862][  T777]  put_chars (drivers/char/virtio_console.c:1176)
[   14.566864][  T777]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   14.566865][  T777]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   14.566869][  T777]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   14.566874][  T777]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   14.566882][  T777]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   14.566884][  T777]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   14.566886][  T777]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   14.566890][  T777]  console_emit_next_record (kernel/printk/printk.c:3183)
[   14.566894][  T777]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   14.566896][  T777]  ? console_flush_one_record (./include/linux/rcupdate.h:314 (discriminator 2) ./include/linux/srcu.h:439 (discriminator 2) kernel/printk/printk.c:291 (discriminator 2) kernel/printk/printk.c:3246 (discriminator 2))
[   14.566899][  T777]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   14.566901][  T777]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   14.566905][  T777]  console_flush_one_record (kernel/printk/printk.c:3268)
[   14.566909][  T777]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   14.566911][  T777]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   14.566916][  T777]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   14.566919][  T777]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   14.566921][  T777]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   14.566922][  T777]  ? lock_acquire (./include/linux/srcutree.h:374 ./include/linux/srcu.h:541 ./include/linux/srcu.h:645 ./include/trace/events/lock.h:23 ./include/trace/events/lock.h:23 kernel/locking/lockdep.c:5871)
[   14.566926][  T777]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   14.566928][  T777]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   14.566930][  T777]  vprintk_emit (kernel/printk/printk.c:2479)
[   14.566934][  T777]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   14.566936][  T777]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   14.566937][  T777]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   14.566942][  T777]  _printk (kernel/printk/printk.c:2504)
[   14.566945][  T777]  ? snapshot_read.cold (user.c:?)
[   14.566950][  T777]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   14.566954][  T777]  br_set_state (net/bridge/br_stp.c:57 (discriminator 2))
[   14.566959][  T777]  br_init_port (net/bridge/br_stp_if.c:39)
[   14.566961][  T777]  br_stp_enable_port (net/bridge/br_stp_if.c:93)
[   14.566963][  T777]  br_device_event (net/bridge/br.c:120)
[   14.566966][  T777]  ? packet_sendmsg_spkt (af_packet.c:?)
[   14.566968][  T777]  ? nlmsg_notify (./include/net/netlink.h:1165 ./include/net/netlink.h:1184 net/netlink/af_netlink.c:2599)
[   14.566974][  T777]  notifier_call_chain (kernel/notifier.c:85)
[   14.566980][  T777]  __dev_notify_flags (net/core/dev.c:2313 net/core/dev.c:2327 net/core/dev.c:9853)
[   14.566985][  T777]  ? netif_change_name (net/core/dev.c:1517)
[   14.566989][  T777]  ? netif_set_allmulti (./include/net/netdev_lock.h:33)
[   14.566991][  T777]  ? kernel_text_address (kernel/extable.c:125 kernel/extable.c:94)
[   14.566994][  T777]  ? __kernel_text_address (kernel/extable.c:79)
[   14.566996][  T777]  ? write_profile (profile.c:?)
[   14.567000][  T777]  netif_change_flags (net/core/dev.c:9882)
[   14.567004][  T777]  do_setlink.isra.0 (net/core/rtnetlink.c:3266 (discriminator 1))
[   14.567007][  T777]  ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1))
[   14.567009][  T777]  ? rtnl_link_get_size (net/core/rtnetlink.c:747)
[   14.567011][  T777]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380)
[   14.567013][  T777]  ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2))
[   14.567016][  T777]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   14.567018][  T777]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   14.567019][  T777]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   14.567022][  T777]  ? kasan_save_stack (mm/kasan/common.c:58)
[   14.567024][  T777]  ? kasan_save_stack (mm/kasan/common.c:57)
[   14.567025][  T777]  ? kasan_save_track (mm/kasan/common.c:78)
[   14.567026][  T777]  ? __kasan_kmalloc (mm/kasan/common.c:398 mm/kasan/common.c:415)
[   14.567029][  T777]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   14.567030][  T777]  ? snd_ac97_proc_read_main (sound/pci/ac97/ac97_proc.c:320)
[   14.567033][  T777]  ? ___sys_sendmsg (net/socket.c:2758)
[   14.567037][  T777]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   14.567039][  T777]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   14.567042][  T777]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   14.567043][  T777]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   14.567045][  T777]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   14.567046][  T777]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   14.567048][  T777]  ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22))
[   14.567050][  T777]  ? __mutex_lock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:3188 kernel/locking/mutex.c:89 kernel/locking/mutex.c:134 kernel/locking/mutex.c:649 kernel/locking/mutex.c:821)
[   14.567053][  T777]  ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1))
[   14.567055][  T777]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   14.567058][  T777]  ? ww_mutex_lock (kernel/locking/mutex.c:934)
[   14.567061][  T777]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   14.567064][  T777]  ? __rtnl_newlink (net/core/rtnetlink.c:4063)
[   14.567069][  T777]  rtnl_newlink (net/core/rtnetlink.c:4215)
[   14.567074][  T777]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   14.567076][  T777]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   14.567080][  T777]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   14.567082][  T777]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   14.567084][  T777]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   14.567086][  T777]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   14.567090][  T777]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   14.567092][  T777]  rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   14.567095][  T777]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   14.567096][  T777]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   14.567101][  T777]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   14.567103][  T777]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   14.567106][  T777]  netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   14.567108][  T777]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   14.567111][  T777]  ? netlink_ack (./include/linux/skbuff.h:2718)
[   14.567117][  T777]  ? netlink_deliver_tap (./include/linux/rcupdate.h:319 (discriminator 2) ./include/linux/rcupdate.h:880 (discriminator 2) ./include/net/netns/generic.h:48 (discriminator 2) net/netlink/af_netlink.c:334 (discriminator 2))
[   14.567119][  T777]  ? netlink_deliver_tap (./include/linux/rcupdate.h:319 (discriminator 2) ./include/linux/rcupdate.h:880 (discriminator 2) net/netlink/af_netlink.c:341 (discriminator 2))
[   14.567123][  T777]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   14.567127][  T777]  ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   14.567130][  T777]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   14.567134][  T777]  netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   14.567138][  T777]  ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7))
[   14.567142][  T777]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   14.567143][  T777]  ? __import_iovec (lib/iov_iter.c:1358 lib/iov_iter.c:1373)
[   14.567148][  T777]  __sock_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4))
[   14.567151][  T777]  ____sys_sendmsg (net/socket.c:2713)
[   14.567154][  T777]  ? copy_msghdr_from_user (net/socket.c:2650)
[   14.567156][  T777]  ? sock_write_iter (net/socket.c:1269)
[   14.567157][  T777]  ? move_addr_to_kernel (net/socket.c:258)
[   14.567165][  T777]  ___sys_sendmsg (net/socket.c:2767)
[   14.567167][  T777]  ? copy_msghdr_from_user (net/socket.c:2619)
[   14.567183][  T777]  __sys_sendmsg (net/socket.c:2799)
[   14.567186][  T777]  ? __sys_sendmsg_sock (net/socket.c:2780)
[   14.567192][  T777]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   14.567195][  T777]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   14.567198][  T777]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   14.567201][  T777]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   14.567203][  T777] RIP: 0033:0x7fe73261954e
[   14.567205][  T777] Code: 4d 89 d8 e8 b4 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 03 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 b4 bd 00 00       	call   0xbdbc
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 03 ff ff ff       	call   0xffffffffffffff3c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 03 ff ff ff       	call   0xffffffffffffff12
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[   14.567207][  T777] RSP: 002b:00007ffcad6f1450 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
[   14.567209][  T777] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007fe73261954e
[   14.567211][  T777] RDX: 0000000000000000 RSI: 00007ffcad6f1500 RDI: 0000000000000005
[   14.567211][  T777] RBP: 00007ffcad6f1460 R08: 0000000000000000 R09: 0000000000000000
[   14.567212][  T777] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a911b6b
[   14.567213][  T777] R13: 00000000004a1620 R14: 0000000000000000 R15: 00007ffcad6f1bc0
| [   16.128100][  T921] softirqs last disabled at (29116): br_device_event (./include/linux/spinlock.h:353 net/bridge/br.c:109)
| [   16.128103][  T921] Preemption disabled at:
| [   16.128103][  T921] 0x0
| [   16.128113][  T921] Tainted: [W]=WARN
[   16.128114][  T921] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   16.128116][  T921] Call Trace:
[   16.128117][  T921]  <TASK>
[   16.128119][  T921]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   16.128125][  T921]  __might_resched.cold (kernel/sched/core.c:9234)
[   16.128129][  T921]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   16.128134][  T921]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   16.128138][  T921]  __kmalloc_noprof (./include/linux/sched/mm.h:322 (discriminator 2) mm/slub.c:4636 (discriminator 2) mm/slub.c:4974 (discriminator 2) mm/slub.c:5413 (discriminator 2) mm/slub.c:5439 (discriminator 2))
[   16.128140][  T921]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   16.128147][  T921]  ? do_raw_spin_unlock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:32 ./include/asm-generic/qspinlock.h:58 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141)
[   16.128150][  T921]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   16.128153][  T921]  put_chars (drivers/char/virtio_console.c:1176)
[   16.128156][  T921]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   16.128162][  T921]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   16.128169][  T921]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   16.128173][  T921]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   16.128177][  T921]  console_emit_next_record (kernel/printk/printk.c:3183)
[   16.128181][  T921]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   16.128183][  T921]  ? console_flush_one_record (./include/linux/rcupdate.h:314 (discriminator 2) ./include/linux/srcu.h:439 (discriminator 2) kernel/printk/printk.c:291 (discriminator 2) kernel/printk/printk.c:3246 (discriminator 2))
[   16.128186][  T921]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   16.128189][  T921]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   16.128193][  T921]  console_flush_one_record (kernel/printk/printk.c:3268)
[   16.128197][  T921]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   16.128199][  T921]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   16.128204][  T921]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   16.128207][  T921]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   16.128209][  T921]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   16.128210][  T921]  ? lock_acquire (./include/linux/srcutree.h:374 ./include/linux/srcu.h:541 ./include/linux/srcu.h:645 ./include/trace/events/lock.h:23 ./include/trace/events/lock.h:23 kernel/locking/lockdep.c:5871)
[   16.128214][  T921]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   16.128216][  T921]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   16.128218][  T921]  vprintk_emit (kernel/printk/printk.c:2479)
[   16.128221][  T921]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   16.128222][  T921]  ? mark_held_locks (kernel/locking/lockdep.c:4341)
[   16.128225][  T921]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   16.128227][  T921]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   16.128231][  T921]  _printk (kernel/printk/printk.c:2504)
[   16.128235][  T921]  ? snapshot_read.cold (user.c:?)
[   16.128242][  T921]  br_set_state (net/bridge/br_stp.c:57 (discriminator 2))
[   16.128247][  T921]  br_stp_disable_port (net/bridge/br_stp_if.c:106)
[   16.128250][  T921]  br_device_event (net/bridge/br.c:111)
[   16.128252][  T921]  ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:211 (discriminator 1) kernel/locking/spinlock.c:221 (discriminator 1))
[   16.128256][  T921]  ? packet_sendmsg_spkt (af_packet.c:?)
[   16.128261][  T921]  notifier_call_chain (kernel/notifier.c:85)
[   16.128267][  T921]  __dev_notify_flags (net/core/dev.c:2313 net/core/dev.c:2327 net/core/dev.c:9855)
[   16.128272][  T921]  ? netif_change_name (net/core/dev.c:1517)
[   16.128276][  T921]  ? netif_set_allmulti (./include/net/netdev_lock.h:33)
[   16.128279][  T921]  ? __kernel_text_address (kernel/extable.c:79)
[   16.128281][  T921]  ? write_profile (profile.c:?)
[   16.128286][  T921]  netif_change_flags (net/core/dev.c:9882)
[   16.128290][  T921]  do_setlink.isra.0 (net/core/rtnetlink.c:3266 (discriminator 1))
[   16.128293][  T921]  ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1))
[   16.128295][  T921]  ? rtnl_link_get_size (net/core/rtnetlink.c:747)
[   16.128297][  T921]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380)
[   16.128299][  T921]  ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2))
[   16.128302][  T921]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   16.128304][  T921]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   16.128306][  T921]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   16.128308][  T921]  ? kasan_save_stack (mm/kasan/common.c:58)
[   16.128310][  T921]  ? kasan_save_stack (mm/kasan/common.c:57)
[   16.128312][  T921]  ? kasan_save_track (mm/kasan/common.c:78)
[   16.128313][  T921]  ? __kasan_kmalloc (mm/kasan/common.c:398 mm/kasan/common.c:415)
[   16.128315][  T921]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   16.128317][  T921]  ? snd_ac97_proc_read_main (sound/pci/ac97/ac97_proc.c:320)
[   16.128320][  T921]  ? ___sys_sendmsg (net/socket.c:2758)
[   16.128324][  T921]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   16.128326][  T921]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   16.128328][  T921]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   16.128330][  T921]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   16.128332][  T921]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   16.128333][  T921]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   16.128334][  T921]  ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22))
[   16.128337][  T921]  ? __mutex_lock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:3188 kernel/locking/mutex.c:89 kernel/locking/mutex.c:134 kernel/locking/mutex.c:649 kernel/locking/mutex.c:821)
[   16.128338][  T921]  ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1))
[   16.128340][  T921]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   16.128343][  T921]  ? ww_mutex_lock (kernel/locking/mutex.c:934)
[   16.128347][  T921]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   16.128349][  T921]  ? __rtnl_newlink (net/core/rtnetlink.c:4063)
[   16.128354][  T921]  rtnl_newlink (net/core/rtnetlink.c:4215)
[   16.128359][  T921]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   16.128361][  T921]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   16.128365][  T921]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   16.128367][  T921]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   16.128369][  T921]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   16.128371][  T921]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   16.128375][  T921]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   16.128377][  T921]  rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   16.128380][  T921]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   16.128381][  T921]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   16.128386][  T921]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   16.128387][  T921]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   16.128391][  T921]  netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   16.128394][  T921]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   16.128397][  T921]  ? netlink_ack (./include/linux/skbuff.h:2718)
[   16.128403][  T921]  ? netlink_deliver_tap (./include/linux/rcupdate.h:319 (discriminator 2) ./include/linux/rcupdate.h:880 (discriminator 2) ./include/net/netns/generic.h:48 (discriminator 2) net/netlink/af_netlink.c:334 (discriminator 2))
[   16.128406][  T921]  ? netlink_deliver_tap (./include/linux/rcupdate.h:319 (discriminator 2) ./include/linux/rcupdate.h:880 (discriminator 2) net/netlink/af_netlink.c:341 (discriminator 2))
[   16.128410][  T921]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   16.128414][  T921]  ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   16.128416][  T921]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   16.128421][  T921]  netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   16.128424][  T921]  ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7))
[   16.128428][  T921]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   16.128430][  T921]  ? __import_iovec (lib/iov_iter.c:1358 lib/iov_iter.c:1373)
[   16.128437][  T921]  __sock_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4))
[   16.128440][  T921]  ____sys_sendmsg (net/socket.c:2713)
[   16.128442][  T921]  ? copy_msghdr_from_user (net/socket.c:2650)
[   16.128444][  T921]  ? sock_write_iter (net/socket.c:1269)
[   16.128446][  T921]  ? move_addr_to_kernel (net/socket.c:258)
[   16.128453][  T921]  ___sys_sendmsg (net/socket.c:2767)
[   16.128456][  T921]  ? copy_msghdr_from_user (net/socket.c:2619)
[   16.128472][  T921]  __sys_sendmsg (net/socket.c:2799)
[   16.128475][  T921]  ? __sys_sendmsg_sock (net/socket.c:2780)
[   16.128481][  T921]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   16.128484][  T921]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   16.128487][  T921]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   16.128490][  T921]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   16.128492][  T921] RIP: 0033:0x7f6d2c4e554e
[   16.128494][  T921] Code: 4d 89 d8 e8 b4 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 03 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 b4 bd 00 00       	call   0xbdbc
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 03 ff ff ff       	call   0xffffffffffffff3c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 03 ff ff ff       	call   0xffffffffffffff12
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[   16.128496][  T921] RSP: 002b:00007fff62028430 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
[   16.128498][  T921] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f6d2c4e554e
[   16.128500][  T921] RDX: 0000000000000000 RSI: 00007fff620284e0 RDI: 0000000000000005
[   16.128500][  T921] RBP: 00007fff62028440 R08: 0000000000000000 R09: 0000000000000000
[   16.128501][  T921] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a911b6d
[   16.128502][  T921] R13: 00000000004a1620 R14: 0000000000000000 R15: 00007fff62028ba0
| [   17.328223][   T38] softirqs last disabled at (193076): br_port_carrier_check (./include/linux/spinlock.h:353 net/bridge/br_if.c:87)
| [   17.328225][   T38] Preemption disabled at:
| [   17.328226][   T38] 0x0
| [   17.328236][   T38] Tainted: [W]=WARN
[   17.328236][   T38] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   17.328238][   T38] Workqueue: events_unbound linkwatch_event
[   17.328241][   T38] Call Trace:
[   17.328243][   T38]  <TASK>
[   17.328245][   T38]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   17.328251][   T38]  __might_resched.cold (kernel/sched/core.c:9234)
[   17.328256][   T38]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   17.328260][   T38]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   17.328264][   T38]  __kmalloc_noprof (./include/linux/sched/mm.h:322 (discriminator 2) mm/slub.c:4636 (discriminator 2) mm/slub.c:4974 (discriminator 2) mm/slub.c:5413 (discriminator 2) mm/slub.c:5439 (discriminator 2))
[   17.328266][   T38]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   17.328273][   T38]  ? do_raw_spin_unlock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:32 ./include/asm-generic/qspinlock.h:58 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141)
[   17.328275][   T38]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   17.328279][   T38]  put_chars (drivers/char/virtio_console.c:1176)
[   17.328282][   T38]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   17.328284][   T38]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   17.328287][   T38]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   17.328290][   T38]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   17.328294][   T38]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   17.328298][   T38]  ? mark_usage (kernel/locking/lockdep.c:4690)
[   17.328300][   T38]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   17.328301][   T38]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   17.328306][   T38]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   17.328307][   T38]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   17.328312][   T38]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   17.328316][   T38]  console_emit_next_record (kernel/printk/printk.c:3183)
[   17.328320][   T38]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   17.328322][   T38]  ? console_flush_one_record (./include/linux/rcupdate.h:314 (discriminator 2) ./include/linux/srcu.h:439 (discriminator 2) kernel/printk/printk.c:291 (discriminator 2) kernel/printk/printk.c:3246 (discriminator 2))
[   17.328325][   T38]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   17.328327][   T38]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   17.328331][   T38]  console_flush_one_record (kernel/printk/printk.c:3268)
[   17.328335][   T38]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   17.328337][   T38]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   17.328342][   T38]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   17.328345][   T38]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   17.328347][   T38]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   17.328348][   T38]  ? lock_acquire (./include/linux/srcutree.h:374 ./include/linux/srcu.h:541 ./include/linux/srcu.h:645 ./include/trace/events/lock.h:23 ./include/trace/events/lock.h:23 kernel/locking/lockdep.c:5871)
[   17.328352][   T38]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   17.328354][   T38]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   17.328357][   T38]  vprintk_emit (kernel/printk/printk.c:2479)
[   17.328360][   T38]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   17.328362][   T38]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   17.328364][   T38]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   17.328368][   T38]  _printk (kernel/printk/printk.c:2504)
[   17.328371][   T38]  ? snapshot_read.cold (user.c:?)
[   17.328376][   T38]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   17.328380][   T38]  br_set_state (net/bridge/br_stp.c:57 (discriminator 2))
[   17.328385][   T38]  br_init_port (net/bridge/br_stp_if.c:39)
[   17.328387][   T38]  br_stp_enable_port (net/bridge/br_stp_if.c:93)
[   17.328389][   T38]  br_port_carrier_check (net/bridge/br_if.c:90)
[   17.328393][   T38]  br_device_event (net/bridge/br.c:101)
[   17.328396][   T38]  ? packet_sendmsg_spkt (af_packet.c:?)
[   17.328398][   T38]  ? nlmsg_notify (./include/net/netlink.h:1165 ./include/net/netlink.h:1184 net/netlink/af_netlink.c:2599)
[   17.328404][   T38]  notifier_call_chain (kernel/notifier.c:85)
[   17.328410][   T38]  netif_state_change (net/core/dev.c:1625)
[   17.328415][   T38]  ? call_netdevice_notifiers_info (./include/net/net_namespace.h:422 (discriminator 7))
[   17.328420][   T38]  ? linkwatch_do_dev (net/core/link_watch.c:182 net/core/link_watch.c:166)
[   17.328422][   T38]  __linkwatch_run_queue (net/core/link_watch.c:240)
[   17.328425][   T38]  ? linkwatch_do_dev (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   17.328427][   T38]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   17.328435][   T38]  linkwatch_event (net/core/link_watch.c:314 (discriminator 11))
[   17.328437][   T38]  ? __linkwatch_run_queue (net/core/link_watch.c:213)
[   17.328441][   T38]  process_one_work (kernel/workqueue.c:3387)
[   17.328447][   T38]  ? __queue_delayed_work (kernel/workqueue.c:2622)
[   17.328450][   T38]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   17.328458][   T38]  worker_thread (kernel/workqueue.c:3470 kernel/workqueue.c:3551)
[   17.328468][   T38]  ? rescuer_thread (./include/linux/list.h:419 (discriminator 3))
[   17.328470][   T38]  kthread (kernel/kthread.c:436)
[   17.328472][   T38]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[   17.328476][   T38]  ? kthread_affine_preferred (kernel/kthread.c:857)
[   17.328478][   T38]  ret_from_fork (arch/x86/kernel/process.c:158)
[   17.328482][   T38]  ? arch_exit_to_user_mode_prepare.isra.0 (arch/x86/entry/vdso/vma.c:80 (discriminator 1))
[   17.328486][   T38]  ? __switch_to (arch/x86/kernel/process_64.c:403 arch/x86/kernel/process_64.c:663)
[   17.328489][   T38]  ? kthread_affine_preferred (kernel/kthread.c:857)
[   17.328492][   T38]  ret_from_fork_asm (arch/x86/entry/entry_64.S:245)
| [   18.695105][ T1184] softirqs last disabled at (15746): br_device_event (./include/linux/spinlock.h:353 net/bridge/br.c:109)
| [   18.695107][ T1184] Preemption disabled at:
| [   18.695108][ T1184] 0x0
| [   18.695118][ T1184] Tainted: [W]=WARN
[   18.695119][ T1184] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   18.695120][ T1184] Call Trace:
[   18.695122][ T1184]  <TASK>
[   18.695123][ T1184]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   18.695130][ T1184]  __might_resched.cold (kernel/sched/core.c:9234)
[   18.695134][ T1184]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   18.695138][ T1184]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   18.695142][ T1184]  __kmalloc_noprof (./include/linux/sched/mm.h:322 (discriminator 2) mm/slub.c:4636 (discriminator 2) mm/slub.c:4974 (discriminator 2) mm/slub.c:5413 (discriminator 2) mm/slub.c:5439 (discriminator 2))
[   18.695144][ T1184]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   18.695151][ T1184]  ? do_raw_spin_unlock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:32 ./include/asm-generic/qspinlock.h:58 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141)
[   18.695154][ T1184]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   18.695157][ T1184]  put_chars (drivers/char/virtio_console.c:1176)
[   18.695160][ T1184]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   18.695166][ T1184]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   18.695174][ T1184]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   18.695177][ T1184]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   18.695181][ T1184]  console_emit_next_record (kernel/printk/printk.c:3183)
[   18.695185][ T1184]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   18.695187][ T1184]  ? console_flush_one_record (./include/linux/rcupdate.h:314 (discriminator 2) ./include/linux/srcu.h:439 (discriminator 2) kernel/printk/printk.c:291 (discriminator 2) kernel/printk/printk.c:3246 (discriminator 2))
[   18.695190][ T1184]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   18.695193][ T1184]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   18.695196][ T1184]  console_flush_one_record (kernel/printk/printk.c:3268)
[   18.695201][ T1184]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   18.695202][ T1184]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   18.695208][ T1184]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   18.695210][ T1184]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   18.695212][ T1184]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   18.695214][ T1184]  ? lock_acquire (./include/linux/srcutree.h:374 ./include/linux/srcu.h:541 ./include/linux/srcu.h:645 ./include/trace/events/lock.h:23 ./include/trace/events/lock.h:23 kernel/locking/lockdep.c:5871)
[   18.695218][ T1184]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   18.695219][ T1184]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   18.695222][ T1184]  vprintk_emit (kernel/printk/printk.c:2479)
[   18.695225][ T1184]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   18.695226][ T1184]  ? mark_held_locks (kernel/locking/lockdep.c:4341)
[   18.695229][ T1184]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   18.695231][ T1184]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   18.695235][ T1184]  _printk (kernel/printk/printk.c:2504)
[   18.695239][ T1184]  ? snapshot_read.cold (user.c:?)
[   18.695246][ T1184]  br_set_state (net/bridge/br_stp.c:57 (discriminator 2))
[   18.695251][ T1184]  br_stp_disable_port (net/bridge/br_stp_if.c:106)
[   18.695254][ T1184]  br_device_event (net/bridge/br.c:111)
[   18.695256][ T1184]  ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:211 (discriminator 1) kernel/locking/spinlock.c:221 (discriminator 1))
[   18.695260][ T1184]  ? packet_sendmsg_spkt (af_packet.c:?)
[   18.695265][ T1184]  notifier_call_chain (kernel/notifier.c:85)
[   18.695271][ T1184]  __dev_notify_flags (net/core/dev.c:2313 net/core/dev.c:2327 net/core/dev.c:9855)
[   18.695276][ T1184]  ? netif_change_name (net/core/dev.c:1517)
[   18.695279][ T1184]  ? netif_set_allmulti (./include/net/netdev_lock.h:33)
[   18.695283][ T1184]  ? __kernel_text_address (kernel/extable.c:79)
[   18.695285][ T1184]  ? write_profile (profile.c:?)
[   18.695290][ T1184]  netif_change_flags (net/core/dev.c:9882)
[   18.695294][ T1184]  do_setlink.isra.0 (net/core/rtnetlink.c:3266 (discriminator 1))
[   18.695297][ T1184]  ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1))
[   18.695299][ T1184]  ? rtnl_link_get_size (net/core/rtnetlink.c:747)
[   18.695300][ T1184]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380)
[   18.695302][ T1184]  ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2))
[   18.695305][ T1184]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   18.695307][ T1184]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   18.695309][ T1184]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   18.695311][ T1184]  ? kasan_save_stack (mm/kasan/common.c:58)
[   18.695314][ T1184]  ? kasan_save_stack (mm/kasan/common.c:57)
[   18.695315][ T1184]  ? kasan_save_track (mm/kasan/common.c:78)
[   18.695316][ T1184]  ? __kasan_kmalloc (mm/kasan/common.c:398 mm/kasan/common.c:415)
[   18.695318][ T1184]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   18.695320][ T1184]  ? snd_ac97_proc_read_main (sound/pci/ac97/ac97_proc.c:320)
[   18.695323][ T1184]  ? ___sys_sendmsg (net/socket.c:2758)
[   18.695327][ T1184]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   18.695329][ T1184]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   18.695331][ T1184]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   18.695333][ T1184]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   18.695335][ T1184]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   18.695336][ T1184]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   18.695337][ T1184]  ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22))
[   18.695340][ T1184]  ? __mutex_lock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:3188 kernel/locking/mutex.c:89 kernel/locking/mutex.c:134 kernel/locking/mutex.c:649 kernel/locking/mutex.c:821)
[   18.695341][ T1184]  ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1))
[   18.695343][ T1184]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   18.695346][ T1184]  ? ww_mutex_lock (kernel/locking/mutex.c:934)
[   18.695350][ T1184]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   18.695352][ T1184]  ? __rtnl_newlink (net/core/rtnetlink.c:4063)
[   18.695357][ T1184]  rtnl_newlink (net/core/rtnetlink.c:4215)
[   18.695362][ T1184]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   18.695364][ T1184]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   18.695369][ T1184]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   18.695370][ T1184]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   18.695373][ T1184]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   18.695375][ T1184]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   18.695378][ T1184]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   18.695380][ T1184]  rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   18.695383][ T1184]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   18.695385][ T1184]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   18.695389][ T1184]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   18.695391][ T1184]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   18.695395][ T1184]  netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   18.695398][ T1184]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   18.695400][ T1184]  ? netlink_ack (./include/linux/skbuff.h:2718)
[   18.695407][ T1184]  ? netlink_deliver_tap (./include/linux/rcupdate.h:319 (discriminator 2) ./include/linux/rcupdate.h:880 (discriminator 2) ./include/net/netns/generic.h:48 (discriminator 2) net/netlink/af_netlink.c:334 (discriminator 2))
[   18.695409][ T1184]  ? netlink_deliver_tap (./include/linux/rcupdate.h:319 (discriminator 2) ./include/linux/rcupdate.h:880 (discriminator 2) net/netlink/af_netlink.c:341 (discriminator 2))
[   18.695413][ T1184]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   18.695417][ T1184]  ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   18.695420][ T1184]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   18.695424][ T1184]  netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   18.695428][ T1184]  ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7))
[   18.695434][ T1184]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   18.695436][ T1184]  ? __import_iovec (lib/iov_iter.c:1358 lib/iov_iter.c:1373)
[   18.695441][ T1184]  __sock_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4))
[   18.695444][ T1184]  ____sys_sendmsg (net/socket.c:2713)
[   18.695446][ T1184]  ? copy_msghdr_from_user (net/socket.c:2650)
[   18.695448][ T1184]  ? sock_write_iter (net/socket.c:1269)
[   18.695450][ T1184]  ? move_addr_to_kernel (net/socket.c:258)
[   18.695457][ T1184]  ___sys_sendmsg (net/socket.c:2767)
[   18.695460][ T1184]  ? copy_msghdr_from_user (net/socket.c:2619)
[   18.695476][ T1184]  __sys_sendmsg (net/socket.c:2799)
[   18.695478][ T1184]  ? __sys_sendmsg_sock (net/socket.c:2780)
[   18.695485][ T1184]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   18.695488][ T1184]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   18.695491][ T1184]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   18.695494][ T1184]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   18.695496][ T1184] RIP: 0033:0x7fa5a080c54e
[   18.695498][ T1184] Code: 4d 89 d8 e8 b4 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 03 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 b4 bd 00 00       	call   0xbdbc
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 03 ff ff ff       	call   0xffffffffffffff3c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 03 ff ff ff       	call   0xffffffffffffff12
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[   18.695500][ T1184] RSP: 002b:00007ffdd56abeb0 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
[   18.695502][ T1184] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007fa5a080c54e
[   18.695504][ T1184] RDX: 0000000000000000 RSI: 00007ffdd56abf60 RDI: 0000000000000005
[   18.695505][ T1184] RBP: 00007ffdd56abec0 R08: 0000000000000000 R09: 0000000000000000
[   18.695505][ T1184] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a911b70
[   18.695506][ T1184] R13: 00000000004a1620 R14: 0000000000000000 R15: 00007ffdd56ac620
| [   19.853280][ T1322] softirqs last disabled at (13638): br_device_event (./include/linux/spinlock.h:353 net/bridge/br.c:119)
| [   19.853282][ T1322] Preemption disabled at:
| [   19.853283][ T1322] 0x0
| [   19.853293][ T1322] Tainted: [W]=WARN
[   19.853294][ T1322] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   19.853295][ T1322] Call Trace:
[   19.853297][ T1322]  <TASK>
[   19.853298][ T1322]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   19.853305][ T1322]  __might_resched.cold (kernel/sched/core.c:9234)
[   19.853309][ T1322]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   19.853313][ T1322]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   19.853318][ T1322]  __kmalloc_noprof (./include/linux/sched/mm.h:322 (discriminator 2) mm/slub.c:4636 (discriminator 2) mm/slub.c:4974 (discriminator 2) mm/slub.c:5413 (discriminator 2) mm/slub.c:5439 (discriminator 2))
[   19.853319][ T1322]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   19.853326][ T1322]  ? do_raw_spin_unlock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:32 ./include/asm-generic/qspinlock.h:58 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141)
[   19.853329][ T1322]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   19.853333][ T1322]  put_chars (drivers/char/virtio_console.c:1176)
[   19.853335][ T1322]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   19.853336][ T1322]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   19.853340][ T1322]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   19.853345][ T1322]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   19.853353][ T1322]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   19.853355][ T1322]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   19.853357][ T1322]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   19.853361][ T1322]  console_emit_next_record (kernel/printk/printk.c:3183)
[   19.853365][ T1322]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   19.853367][ T1322]  ? console_flush_one_record (./include/linux/rcupdate.h:314 (discriminator 2) ./include/linux/srcu.h:439 (discriminator 2) kernel/printk/printk.c:291 (discriminator 2) kernel/printk/printk.c:3246 (discriminator 2))
[   19.853370][ T1322]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   19.853372][ T1322]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   19.853376][ T1322]  console_flush_one_record (kernel/printk/printk.c:3268)
[   19.853380][ T1322]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   19.853382][ T1322]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   19.853387][ T1322]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   19.853390][ T1322]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   19.853392][ T1322]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   19.853393][ T1322]  ? lock_acquire (./include/linux/srcutree.h:374 ./include/linux/srcu.h:541 ./include/linux/srcu.h:645 ./include/trace/events/lock.h:23 ./include/trace/events/lock.h:23 kernel/locking/lockdep.c:5871)
[   19.853397][ T1322]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   19.853398][ T1322]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   19.853401][ T1322]  vprintk_emit (kernel/printk/printk.c:2479)
[   19.853404][ T1322]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   19.853406][ T1322]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   19.853408][ T1322]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   19.853413][ T1322]  _printk (kernel/printk/printk.c:2504)
[   19.853416][ T1322]  ? snapshot_read.cold (user.c:?)
[   19.853421][ T1322]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   19.853425][ T1322]  br_set_state (net/bridge/br_stp.c:57 (discriminator 2))
[   19.853430][ T1322]  br_init_port (net/bridge/br_stp_if.c:39)
[   19.853434][ T1322]  br_stp_enable_port (net/bridge/br_stp_if.c:93)
[   19.853436][ T1322]  br_device_event (net/bridge/br.c:120)
[   19.853439][ T1322]  ? packet_sendmsg_spkt (af_packet.c:?)
[   19.853441][ T1322]  ? nlmsg_notify (./include/net/netlink.h:1165 ./include/net/netlink.h:1184 net/netlink/af_netlink.c:2599)
[   19.853447][ T1322]  notifier_call_chain (kernel/notifier.c:85)
[   19.853453][ T1322]  __dev_notify_flags (net/core/dev.c:2313 net/core/dev.c:2327 net/core/dev.c:9853)
[   19.853457][ T1322]  ? netif_change_name (net/core/dev.c:1517)
[   19.853461][ T1322]  ? netif_set_allmulti (./include/net/netdev_lock.h:33)
[   19.853464][ T1322]  ? kernel_text_address (kernel/extable.c:125 kernel/extable.c:94)
[   19.853467][ T1322]  ? __kernel_text_address (kernel/extable.c:79)
[   19.853468][ T1322]  ? write_profile (profile.c:?)
[   19.853473][ T1322]  netif_change_flags (net/core/dev.c:9882)
[   19.853476][ T1322]  do_setlink.isra.0 (net/core/rtnetlink.c:3266 (discriminator 1))
[   19.853480][ T1322]  ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1))
[   19.853482][ T1322]  ? rtnl_link_get_size (net/core/rtnetlink.c:747)
[   19.853483][ T1322]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380)
[   19.853485][ T1322]  ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2))
[   19.853488][ T1322]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   19.853490][ T1322]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   19.853492][ T1322]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   19.853495][ T1322]  ? kasan_save_stack (mm/kasan/common.c:58)
[   19.853497][ T1322]  ? kasan_save_stack (mm/kasan/common.c:57)
[   19.853498][ T1322]  ? kasan_save_track (mm/kasan/common.c:78)
[   19.853499][ T1322]  ? __kasan_kmalloc (mm/kasan/common.c:398 mm/kasan/common.c:415)
[   19.853501][ T1322]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   19.853503][ T1322]  ? snd_ac97_proc_read_main (sound/pci/ac97/ac97_proc.c:320)
[   19.853506][ T1322]  ? ___sys_sendmsg (net/socket.c:2758)
[   19.853510][ T1322]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   19.853512][ T1322]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   19.853514][ T1322]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   19.853516][ T1322]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   19.853518][ T1322]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   19.853519][ T1322]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   19.853520][ T1322]  ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22))
[   19.853523][ T1322]  ? __mutex_lock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:3188 kernel/locking/mutex.c:89 kernel/locking/mutex.c:134 kernel/locking/mutex.c:649 kernel/locking/mutex.c:821)
[   19.853525][ T1322]  ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1))
[   19.853527][ T1322]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   19.853531][ T1322]  ? ww_mutex_lock (kernel/locking/mutex.c:934)
[   19.853534][ T1322]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   19.853536][ T1322]  ? __rtnl_newlink (net/core/rtnetlink.c:4063)
[   19.853541][ T1322]  rtnl_newlink (net/core/rtnetlink.c:4215)
[   19.853546][ T1322]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   19.853548][ T1322]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   19.853553][ T1322]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   19.853555][ T1322]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   19.853557][ T1322]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   19.853559][ T1322]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   19.853562][ T1322]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   19.853564][ T1322]  rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   19.853567][ T1322]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   19.853569][ T1322]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   19.853573][ T1322]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   19.853575][ T1322]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   19.853578][ T1322]  netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   19.853580][ T1322]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   19.853583][ T1322]  ? netlink_ack (./include/linux/skbuff.h:2718)
[   19.853589][ T1322]  ? netlink_deliver_tap (./include/linux/rcupdate.h:319 (discriminator 2) ./include/linux/rcupdate.h:880 (discriminator 2) ./include/net/netns/generic.h:48 (discriminator 2) net/netlink/af_netlink.c:334 (discriminator 2))
[   19.853591][ T1322]  ? netlink_deliver_tap (./include/linux/rcupdate.h:319 (discriminator 2) ./include/linux/rcupdate.h:880 (discriminator 2) net/netlink/af_netlink.c:341 (discriminator 2))
[   19.853596][ T1322]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   19.853600][ T1322]  ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   19.853602][ T1322]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   19.853606][ T1322]  netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   19.853610][ T1322]  ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7))
[   19.853614][ T1322]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   19.853616][ T1322]  ? __import_iovec (lib/iov_iter.c:1358 lib/iov_iter.c:1373)
[   19.853621][ T1322]  __sock_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4))
[   19.853623][ T1322]  ____sys_sendmsg (net/socket.c:2713)
[   19.853626][ T1322]  ? copy_msghdr_from_user (net/socket.c:2650)
[   19.853628][ T1322]  ? sock_write_iter (net/socket.c:1269)
[   19.853629][ T1322]  ? move_addr_to_kernel (net/socket.c:258)
[   19.853637][ T1322]  ___sys_sendmsg (net/socket.c:2767)
[   19.853639][ T1322]  ? copy_msghdr_from_user (net/socket.c:2619)
[   19.853655][ T1322]  __sys_sendmsg (net/socket.c:2799)
[   19.853658][ T1322]  ? __sys_sendmsg_sock (net/socket.c:2780)
[   19.853664][ T1322]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   19.853667][ T1322]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   19.853670][ T1322]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   19.853673][ T1322]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   19.853675][ T1322] RIP: 0033:0x7fe2f50d054e
[   19.853677][ T1322] Code: 4d 89 d8 e8 b4 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 03 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 b4 bd 00 00       	call   0xbdbc
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 03 ff ff ff       	call   0xffffffffffffff3c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 03 ff ff ff       	call   0xffffffffffffff12
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[   19.853679][ T1322] RSP: 002b:00007fffffc42af0 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
[   19.853681][ T1322] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007fe2f50d054e
[   19.853682][ T1322] RDX: 0000000000000000 RSI: 00007fffffc42ba0 RDI: 0000000000000005
[   19.853683][ T1322] RBP: 00007fffffc42b00 R08: 0000000000000000 R09: 0000000000000000
[   19.853684][ T1322] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a911b71
[   19.853685][ T1322] R13: 00000000004a1620 R14: 0000000000000000 R15: 00007fffffc43260
| [   21.291140][ T1447] softirqs last disabled at (20392): br_device_event (./include/linux/spinlock.h:353 net/bridge/br.c:109)
| [   21.291142][ T1447] Preemption disabled at:
| [   21.291143][ T1447] 0x0
| [   21.291152][ T1447] Tainted: [W]=WARN
[   21.291153][ T1447] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   21.291155][ T1447] Call Trace:
[   21.291156][ T1447]  <TASK>
[   21.291158][ T1447]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   21.291164][ T1447]  __might_resched.cold (kernel/sched/core.c:9234)
[   21.291169][ T1447]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   21.291173][ T1447]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   21.291177][ T1447]  __kmalloc_noprof (./include/linux/sched/mm.h:322 (discriminator 2) mm/slub.c:4636 (discriminator 2) mm/slub.c:4974 (discriminator 2) mm/slub.c:5413 (discriminator 2) mm/slub.c:5439 (discriminator 2))
[   21.291179][ T1447]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   21.291186][ T1447]  ? do_raw_spin_unlock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:32 ./include/asm-generic/qspinlock.h:58 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141)
[   21.291189][ T1447]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   21.291192][ T1447]  put_chars (drivers/char/virtio_console.c:1176)
[   21.291195][ T1447]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   21.291201][ T1447]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   21.291209][ T1447]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   21.291212][ T1447]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   21.291216][ T1447]  console_emit_next_record (kernel/printk/printk.c:3183)
[   21.291220][ T1447]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   21.291222][ T1447]  ? console_flush_one_record (./include/linux/rcupdate.h:314 (discriminator 2) ./include/linux/srcu.h:439 (discriminator 2) kernel/printk/printk.c:291 (discriminator 2) kernel/printk/printk.c:3246 (discriminator 2))
[   21.291225][ T1447]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   21.291228][ T1447]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   21.291232][ T1447]  console_flush_one_record (kernel/printk/printk.c:3268)
[   21.291236][ T1447]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   21.291238][ T1447]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   21.291243][ T1447]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   21.291246][ T1447]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   21.291248][ T1447]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   21.291249][ T1447]  ? lock_acquire (./include/linux/srcutree.h:374 ./include/linux/srcu.h:541 ./include/linux/srcu.h:645 ./include/trace/events/lock.h:23 ./include/trace/events/lock.h:23 kernel/locking/lockdep.c:5871)
[   21.291253][ T1447]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   21.291255][ T1447]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   21.291258][ T1447]  vprintk_emit (kernel/printk/printk.c:2479)
[   21.291261][ T1447]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   21.291262][ T1447]  ? mark_held_locks (kernel/locking/lockdep.c:4341)
[   21.291264][ T1447]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   21.291266][ T1447]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   21.291270][ T1447]  _printk (kernel/printk/printk.c:2504)
[   21.291274][ T1447]  ? snapshot_read.cold (user.c:?)
[   21.291282][ T1447]  br_set_state (net/bridge/br_stp.c:57 (discriminator 2))
[   21.291286][ T1447]  br_stp_disable_port (net/bridge/br_stp_if.c:106)
[   21.291290][ T1447]  br_device_event (net/bridge/br.c:111)
[   21.291292][ T1447]  ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:211 (discriminator 1) kernel/locking/spinlock.c:221 (discriminator 1))
[   21.291296][ T1447]  ? packet_sendmsg_spkt (af_packet.c:?)
[   21.291301][ T1447]  notifier_call_chain (kernel/notifier.c:85)
[   21.291307][ T1447]  __dev_notify_flags (net/core/dev.c:2313 net/core/dev.c:2327 net/core/dev.c:9855)
[   21.291312][ T1447]  ? netif_change_name (net/core/dev.c:1517)
[   21.291316][ T1447]  ? netif_set_allmulti (./include/net/netdev_lock.h:33)
[   21.291319][ T1447]  ? __kernel_text_address (kernel/extable.c:79)
[   21.291321][ T1447]  ? write_profile (profile.c:?)
[   21.291326][ T1447]  netif_change_flags (net/core/dev.c:9882)
[   21.291330][ T1447]  do_setlink.isra.0 (net/core/rtnetlink.c:3266 (discriminator 1))
[   21.291333][ T1447]  ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1))
[   21.291335][ T1447]  ? rtnl_link_get_size (net/core/rtnetlink.c:747)
[   21.291336][ T1447]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380)
[   21.291338][ T1447]  ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2))
[   21.291342][ T1447]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   21.291344][ T1447]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   21.291345][ T1447]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   21.291348][ T1447]  ? kasan_save_stack (mm/kasan/common.c:58)
[   21.291350][ T1447]  ? kasan_save_stack (mm/kasan/common.c:57)
[   21.291351][ T1447]  ? kasan_save_track (mm/kasan/common.c:78)
[   21.291352][ T1447]  ? __kasan_kmalloc (mm/kasan/common.c:398 mm/kasan/common.c:415)
[   21.291355][ T1447]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   21.291356][ T1447]  ? snd_ac97_proc_read_main (sound/pci/ac97/ac97_proc.c:320)
[   21.291359][ T1447]  ? ___sys_sendmsg (net/socket.c:2758)
[   21.291363][ T1447]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   21.291365][ T1447]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   21.291368][ T1447]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   21.291369][ T1447]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   21.291371][ T1447]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   21.291374][ T1447]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   21.291376][ T1447]  ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22))
[   21.291378][ T1447]  ? __mutex_lock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:3188 kernel/locking/mutex.c:89 kernel/locking/mutex.c:134 kernel/locking/mutex.c:649 kernel/locking/mutex.c:821)
[   21.291380][ T1447]  ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1))
[   21.291381][ T1447]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   21.291385][ T1447]  ? ww_mutex_lock (kernel/locking/mutex.c:934)
[   21.291388][ T1447]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   21.291390][ T1447]  ? __rtnl_newlink (net/core/rtnetlink.c:4063)
[   21.291396][ T1447]  rtnl_newlink (net/core/rtnetlink.c:4215)
[   21.291401][ T1447]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   21.291403][ T1447]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   21.291407][ T1447]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   21.291409][ T1447]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   21.291411][ T1447]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   21.291413][ T1447]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   21.291417][ T1447]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   21.291419][ T1447]  rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   21.291422][ T1447]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   21.291424][ T1447]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   21.291428][ T1447]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   21.291430][ T1447]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   21.291433][ T1447]  netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   21.291437][ T1447]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   21.291440][ T1447]  ? netlink_ack (./include/linux/skbuff.h:2718)
[   21.291446][ T1447]  ? netlink_deliver_tap (./include/linux/rcupdate.h:319 (discriminator 2) ./include/linux/rcupdate.h:880 (discriminator 2) ./include/net/netns/generic.h:48 (discriminator 2) net/netlink/af_netlink.c:334 (discriminator 2))
[   21.291448][ T1447]  ? netlink_deliver_tap (./include/linux/rcupdate.h:319 (discriminator 2) ./include/linux/rcupdate.h:880 (discriminator 2) net/netlink/af_netlink.c:341 (discriminator 2))
[   21.291452][ T1447]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   21.291456][ T1447]  ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   21.291459][ T1447]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   21.291463][ T1447]  netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   21.291467][ T1447]  ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7))
[   21.291470][ T1447]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   21.291472][ T1447]  ? __import_iovec (lib/iov_iter.c:1358 lib/iov_iter.c:1373)
[   21.291477][ T1447]  __sock_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4))
[   21.291480][ T1447]  ____sys_sendmsg (net/socket.c:2713)
[   21.291482][ T1447]  ? copy_msghdr_from_user (net/socket.c:2650)
[   21.291485][ T1447]  ? sock_write_iter (net/socket.c:1269)
[   21.291486][ T1447]  ? move_addr_to_kernel (net/socket.c:258)
[   21.291494][ T1447]  ___sys_sendmsg (net/socket.c:2767)
[   21.291496][ T1447]  ? copy_msghdr_from_user (net/socket.c:2619)
[   21.291512][ T1447]  __sys_sendmsg (net/socket.c:2799)
[   21.291515][ T1447]  ? __sys_sendmsg_sock (net/socket.c:2780)
[   21.291521][ T1447]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   21.291524][ T1447]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   21.291527][ T1447]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   21.291530][ T1447]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   21.291532][ T1447] RIP: 0033:0x7f08b059454e
[   21.291534][ T1447] Code: 4d 89 d8 e8 b4 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 03 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 b4 bd 00 00       	call   0xbdbc
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 03 ff ff ff       	call   0xffffffffffffff3c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 03 ff ff ff       	call   0xffffffffffffff12
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[   21.291536][ T1447] RSP: 002b:00007ffd81b4b830 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
[   21.291538][ T1447] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f08b059454e
[   21.291540][ T1447] RDX: 0000000000000000 RSI: 00007ffd81b4b8e0 RDI: 0000000000000005
[   21.291541][ T1447] RBP: 00007ffd81b4b840 R08: 0000000000000000 R09: 0000000000000000
[   21.291541][ T1447] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a911b72
[   21.291542][ T1447] R13: 00000000004a1620 R14: 0000000000000000 R15: 00007ffd81b4bfa0
| [   22.541806][ T1585] softirqs last disabled at (23308): br_device_event (./include/linux/spinlock.h:353 net/bridge/br.c:119)
| [   22.541808][ T1585] Preemption disabled at:
| [   22.541809][ T1585] 0x0
| [   22.541822][ T1585] Tainted: [W]=WARN
[   22.541823][ T1585] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   22.541824][ T1585] Call Trace:
[   22.541826][ T1585]  <TASK>
[   22.541827][ T1585]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   22.541834][ T1585]  __might_resched.cold (kernel/sched/core.c:9234)
[   22.541839][ T1585]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   22.541843][ T1585]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   22.541847][ T1585]  __kmalloc_noprof (./include/linux/sched/mm.h:322 (discriminator 2) mm/slub.c:4636 (discriminator 2) mm/slub.c:4974 (discriminator 2) mm/slub.c:5413 (discriminator 2) mm/slub.c:5439 (discriminator 2))
[   22.541849][ T1585]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   22.541856][ T1585]  ? do_raw_spin_unlock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:32 ./include/asm-generic/qspinlock.h:58 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141)
[   22.541858][ T1585]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   22.541862][ T1585]  put_chars (drivers/char/virtio_console.c:1176)
[   22.541864][ T1585]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   22.541866][ T1585]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   22.541869][ T1585]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   22.541874][ T1585]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   22.541882][ T1585]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   22.541884][ T1585]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   22.541886][ T1585]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   22.541890][ T1585]  console_emit_next_record (kernel/printk/printk.c:3183)
[   22.541894][ T1585]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   22.541896][ T1585]  ? console_flush_one_record (./include/linux/rcupdate.h:314 (discriminator 2) ./include/linux/srcu.h:439 (discriminator 2) kernel/printk/printk.c:291 (discriminator 2) kernel/printk/printk.c:3246 (discriminator 2))
[   22.541899][ T1585]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   22.541901][ T1585]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   22.541905][ T1585]  console_flush_one_record (kernel/printk/printk.c:3268)
[   22.541909][ T1585]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   22.541911][ T1585]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   22.541916][ T1585]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   22.541919][ T1585]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   22.541921][ T1585]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   22.541923][ T1585]  ? lock_acquire (./include/linux/srcutree.h:374 ./include/linux/srcu.h:541 ./include/linux/srcu.h:645 ./include/trace/events/lock.h:23 ./include/trace/events/lock.h:23 kernel/locking/lockdep.c:5871)
[   22.541926][ T1585]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   22.541928][ T1585]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   22.541931][ T1585]  vprintk_emit (kernel/printk/printk.c:2479)
[   22.541934][ T1585]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   22.541936][ T1585]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   22.541938][ T1585]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   22.541942][ T1585]  _printk (kernel/printk/printk.c:2504)
[   22.541946][ T1585]  ? snapshot_read.cold (user.c:?)
[   22.541951][ T1585]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   22.541955][ T1585]  br_set_state (net/bridge/br_stp.c:57 (discriminator 2))
[   22.541959][ T1585]  br_init_port (net/bridge/br_stp_if.c:39)
[   22.541962][ T1585]  br_stp_enable_port (net/bridge/br_stp_if.c:93)
[   22.541963][ T1585]  br_device_event (net/bridge/br.c:120)
[   22.541966][ T1585]  ? packet_sendmsg_spkt (af_packet.c:?)
[   22.541968][ T1585]  ? nlmsg_notify (./include/net/netlink.h:1165 ./include/net/netlink.h:1184 net/netlink/af_netlink.c:2599)
[   22.541974][ T1585]  notifier_call_chain (kernel/notifier.c:85)
[   22.541980][ T1585]  __dev_notify_flags (net/core/dev.c:2313 net/core/dev.c:2327 net/core/dev.c:9853)
[   22.541985][ T1585]  ? netif_change_name (net/core/dev.c:1517)
[   22.541988][ T1585]  ? netif_set_allmulti (./include/net/netdev_lock.h:33)
[   22.541991][ T1585]  ? kernel_text_address (kernel/extable.c:125 kernel/extable.c:94)
[   22.541994][ T1585]  ? __kernel_text_address (kernel/extable.c:79)
[   22.541995][ T1585]  ? write_profile (profile.c:?)
[   22.542000][ T1585]  netif_change_flags (net/core/dev.c:9882)
[   22.542004][ T1585]  do_setlink.isra.0 (net/core/rtnetlink.c:3266 (discriminator 1))
[   22.542010][ T1585]  ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1))
[   22.542012][ T1585]  ? rtnl_link_get_size (net/core/rtnetlink.c:747)
[   22.542013][ T1585]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380)
[   22.542015][ T1585]  ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2))
[   22.542018][ T1585]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   22.542020][ T1585]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   22.542022][ T1585]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   22.542024][ T1585]  ? kasan_save_stack (mm/kasan/common.c:58)
[   22.542027][ T1585]  ? kasan_save_stack (mm/kasan/common.c:57)
[   22.542028][ T1585]  ? kasan_save_track (mm/kasan/common.c:78)
[   22.542029][ T1585]  ? __kasan_kmalloc (mm/kasan/common.c:398 mm/kasan/common.c:415)
[   22.542031][ T1585]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   22.542033][ T1585]  ? snd_ac97_proc_read_main (sound/pci/ac97/ac97_proc.c:320)
[   22.542036][ T1585]  ? ___sys_sendmsg (net/socket.c:2758)
[   22.542040][ T1585]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   22.542042][ T1585]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   22.542044][ T1585]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   22.542046][ T1585]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   22.542047][ T1585]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   22.542048][ T1585]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   22.542050][ T1585]  ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22))
[   22.542052][ T1585]  ? __mutex_lock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:3188 kernel/locking/mutex.c:89 kernel/locking/mutex.c:134 kernel/locking/mutex.c:649 kernel/locking/mutex.c:821)
[   22.542055][ T1585]  ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1))
[   22.542057][ T1585]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   22.542060][ T1585]  ? ww_mutex_lock (kernel/locking/mutex.c:934)
[   22.542063][ T1585]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   22.542066][ T1585]  ? __rtnl_newlink (net/core/rtnetlink.c:4063)
[   22.542071][ T1585]  rtnl_newlink (net/core/rtnetlink.c:4215)
[   22.542076][ T1585]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   22.542078][ T1585]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   22.542082][ T1585]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   22.542084][ T1585]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   22.542086][ T1585]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   22.542088][ T1585]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   22.542092][ T1585]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   22.542094][ T1585]  rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   22.542097][ T1585]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   22.542098][ T1585]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   22.542103][ T1585]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   22.542104][ T1585]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   22.542108][ T1585]  netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   22.542110][ T1585]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   22.542113][ T1585]  ? netlink_ack (./include/linux/skbuff.h:2718)
[   22.542119][ T1585]  ? netlink_deliver_tap (./include/linux/rcupdate.h:319 (discriminator 2) ./include/linux/rcupdate.h:880 (discriminator 2) ./include/net/netns/generic.h:48 (discriminator 2) net/netlink/af_netlink.c:334 (discriminator 2))
[   22.542121][ T1585]  ? netlink_deliver_tap (./include/linux/rcupdate.h:319 (discriminator 2) ./include/linux/rcupdate.h:880 (discriminator 2) net/netlink/af_netlink.c:341 (discriminator 2))
[   22.542125][ T1585]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   22.542129][ T1585]  ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   22.542132][ T1585]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   22.542136][ T1585]  netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   22.542140][ T1585]  ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7))
[   22.542144][ T1585]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   22.542145][ T1585]  ? __import_iovec (lib/iov_iter.c:1358 lib/iov_iter.c:1373)
[   22.542150][ T1585]  __sock_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4))
[   22.542153][ T1585]  ____sys_sendmsg (net/socket.c:2713)
[   22.542155][ T1585]  ? copy_msghdr_from_user (net/socket.c:2650)
[   22.542158][ T1585]  ? sock_write_iter (net/socket.c:1269)
[   22.542159][ T1585]  ? move_addr_to_kernel (net/socket.c:258)
[   22.542166][ T1585]  ___sys_sendmsg (net/socket.c:2767)
[   22.542169][ T1585]  ? copy_msghdr_from_user (net/socket.c:2619)
[   22.542185][ T1585]  __sys_sendmsg (net/socket.c:2799)
[   22.542188][ T1585]  ? __sys_sendmsg_sock (net/socket.c:2780)
[   22.542194][ T1585]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   22.542197][ T1585]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   22.542200][ T1585]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   22.542203][ T1585]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   22.542205][ T1585] RIP: 0033:0x7fe0e4eb454e
[   22.542207][ T1585] Code: 4d 89 d8 e8 b4 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 03 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 b4 bd 00 00       	call   0xbdbc
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 03 ff ff ff       	call   0xffffffffffffff3c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 03 ff ff ff       	call   0xffffffffffffff12
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[   22.542209][ T1585] RSP: 002b:00007ffe2f2ad6e0 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
[   22.542211][ T1585] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007fe0e4eb454e
[   22.542213][ T1585] RDX: 0000000000000000 RSI: 00007ffe2f2ad790 RDI: 0000000000000005
[   22.542213][ T1585] RBP: 00007ffe2f2ad6f0 R08: 0000000000000000 R09: 0000000000000000
[   22.542214][ T1585] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a911b73
[   22.542215][ T1585] R13: 00000000004a1620 R14: 0000000000000000 R15: 00007ffe2f2ade50
| [   24.014130][ T1710] softirqs last disabled at (14648): br_device_event (./include/linux/spinlock.h:353 net/bridge/br.c:109)
| [   24.014132][ T1710] Preemption disabled at:
| [   24.014133][ T1710] 0x0
| [   24.014143][ T1710] Tainted: [W]=WARN
[   24.014144][ T1710] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   24.014145][ T1710] Call Trace:
[   24.014147][ T1710]  <TASK>
[   24.014148][ T1710]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   24.014155][ T1710]  __might_resched.cold (kernel/sched/core.c:9234)
[   24.014159][ T1710]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   24.014163][ T1710]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   24.014168][ T1710]  __kmalloc_noprof (./include/linux/sched/mm.h:322 (discriminator 2) mm/slub.c:4636 (discriminator 2) mm/slub.c:4974 (discriminator 2) mm/slub.c:5413 (discriminator 2) mm/slub.c:5439 (discriminator 2))
[   24.014170][ T1710]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   24.014176][ T1710]  ? do_raw_spin_unlock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:32 ./include/asm-generic/qspinlock.h:58 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141)
[   24.014179][ T1710]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   24.014182][ T1710]  put_chars (drivers/char/virtio_console.c:1176)
[   24.014185][ T1710]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   24.014191][ T1710]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   24.014198][ T1710]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   24.014202][ T1710]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   24.014206][ T1710]  console_emit_next_record (kernel/printk/printk.c:3183)
[   24.014210][ T1710]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   24.014212][ T1710]  ? console_flush_one_record (./include/linux/rcupdate.h:314 (discriminator 2) ./include/linux/srcu.h:439 (discriminator 2) kernel/printk/printk.c:291 (discriminator 2) kernel/printk/printk.c:3246 (discriminator 2))
[   24.014215][ T1710]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   24.014217][ T1710]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   24.014221][ T1710]  console_flush_one_record (kernel/printk/printk.c:3268)
[   24.014225][ T1710]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   24.014227][ T1710]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   24.014233][ T1710]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   24.014235][ T1710]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   24.014237][ T1710]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   24.014239][ T1710]  ? lock_acquire (./include/linux/srcutree.h:374 ./include/linux/srcu.h:541 ./include/linux/srcu.h:645 ./include/trace/events/lock.h:23 ./include/trace/events/lock.h:23 kernel/locking/lockdep.c:5871)
[   24.014242][ T1710]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   24.014244][ T1710]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   24.014247][ T1710]  vprintk_emit (kernel/printk/printk.c:2479)
[   24.014250][ T1710]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   24.014251][ T1710]  ? mark_held_locks (kernel/locking/lockdep.c:4341)
[   24.014253][ T1710]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   24.014255][ T1710]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   24.014260][ T1710]  _printk (kernel/printk/printk.c:2504)
[   24.014263][ T1710]  ? snapshot_read.cold (user.c:?)
[   24.014271][ T1710]  br_set_state (net/bridge/br_stp.c:57 (discriminator 2))
[   24.014275][ T1710]  br_stp_disable_port (net/bridge/br_stp_if.c:106)
[   24.014278][ T1710]  br_device_event (net/bridge/br.c:111)
[   24.014280][ T1710]  ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:211 (discriminator 1) kernel/locking/spinlock.c:221 (discriminator 1))
[   24.014284][ T1710]  ? packet_sendmsg_spkt (af_packet.c:?)
[   24.014290][ T1710]  notifier_call_chain (kernel/notifier.c:85)
[   24.014295][ T1710]  __dev_notify_flags (net/core/dev.c:2313 net/core/dev.c:2327 net/core/dev.c:9855)
[   24.014300][ T1710]  ? netif_change_name (net/core/dev.c:1517)
[   24.014304][ T1710]  ? netif_set_allmulti (./include/net/netdev_lock.h:33)
[   24.014307][ T1710]  ? __kernel_text_address (kernel/extable.c:79)
[   24.014309][ T1710]  ? write_profile (profile.c:?)
[   24.014314][ T1710]  netif_change_flags (net/core/dev.c:9882)
[   24.014318][ T1710]  do_setlink.isra.0 (net/core/rtnetlink.c:3266 (discriminator 1))
[   24.014321][ T1710]  ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1))
[   24.014323][ T1710]  ? rtnl_link_get_size (net/core/rtnetlink.c:747)
[   24.014324][ T1710]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380)
[   24.014326][ T1710]  ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2))
[   24.014329][ T1710]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   24.014332][ T1710]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   24.014333][ T1710]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   24.014336][ T1710]  ? kasan_save_stack (mm/kasan/common.c:58)
[   24.014338][ T1710]  ? kasan_save_stack (mm/kasan/common.c:57)
[   24.014339][ T1710]  ? kasan_save_track (mm/kasan/common.c:78)
[   24.014341][ T1710]  ? __kasan_kmalloc (mm/kasan/common.c:398 mm/kasan/common.c:415)
[   24.014343][ T1710]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   24.014345][ T1710]  ? snd_ac97_proc_read_main (sound/pci/ac97/ac97_proc.c:320)
[   24.014348][ T1710]  ? ___sys_sendmsg (net/socket.c:2758)
[   24.014351][ T1710]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   24.014354][ T1710]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   24.014356][ T1710]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   24.014358][ T1710]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   24.014359][ T1710]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   24.014360][ T1710]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   24.014362][ T1710]  ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22))
[   24.014364][ T1710]  ? __mutex_lock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:3188 kernel/locking/mutex.c:89 kernel/locking/mutex.c:134 kernel/locking/mutex.c:649 kernel/locking/mutex.c:821)
[   24.014366][ T1710]  ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1))
[   24.014368][ T1710]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   24.014371][ T1710]  ? ww_mutex_lock (kernel/locking/mutex.c:934)
[   24.014374][ T1710]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   24.014376][ T1710]  ? __rtnl_newlink (net/core/rtnetlink.c:4063)
[   24.014382][ T1710]  rtnl_newlink (net/core/rtnetlink.c:4215)
[   24.014387][ T1710]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   24.014389][ T1710]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   24.014393][ T1710]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   24.014395][ T1710]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   24.014397][ T1710]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   24.014399][ T1710]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   24.014403][ T1710]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   24.014405][ T1710]  rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   24.014408][ T1710]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   24.014409][ T1710]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   24.014414][ T1710]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   24.014416][ T1710]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   24.014419][ T1710]  netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   24.014422][ T1710]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   24.014425][ T1710]  ? netlink_ack (./include/linux/skbuff.h:2718)
[   24.014433][ T1710]  ? netlink_deliver_tap (./include/linux/rcupdate.h:319 (discriminator 2) ./include/linux/rcupdate.h:880 (discriminator 2) ./include/net/netns/generic.h:48 (discriminator 2) net/netlink/af_netlink.c:334 (discriminator 2))
[   24.014435][ T1710]  ? netlink_deliver_tap (./include/linux/rcupdate.h:319 (discriminator 2) ./include/linux/rcupdate.h:880 (discriminator 2) net/netlink/af_netlink.c:341 (discriminator 2))
[   24.014440][ T1710]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   24.014444][ T1710]  ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   24.014446][ T1710]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   24.014451][ T1710]  netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   24.014455][ T1710]  ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7))
[   24.014459][ T1710]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   24.014460][ T1710]  ? __import_iovec (lib/iov_iter.c:1358 lib/iov_iter.c:1373)
[   24.014466][ T1710]  __sock_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4))
[   24.014468][ T1710]  ____sys_sendmsg (net/socket.c:2713)
[   24.014471][ T1710]  ? copy_msghdr_from_user (net/socket.c:2650)
[   24.014473][ T1710]  ? sock_write_iter (net/socket.c:1269)
[   24.014475][ T1710]  ? move_addr_to_kernel (net/socket.c:258)
[   24.014482][ T1710]  ___sys_sendmsg (net/socket.c:2767)
[   24.014485][ T1710]  ? copy_msghdr_from_user (net/socket.c:2619)
[   24.014500][ T1710]  __sys_sendmsg (net/socket.c:2799)
[   24.014503][ T1710]  ? __sys_sendmsg_sock (net/socket.c:2780)
[   24.014509][ T1710]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   24.014512][ T1710]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   24.014515][ T1710]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   24.014518][ T1710]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   24.014520][ T1710] RIP: 0033:0x7f2336c3254e
[   24.014522][ T1710] Code: 4d 89 d8 e8 b4 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 03 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 b4 bd 00 00       	call   0xbdbc
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 03 ff ff ff       	call   0xffffffffffffff3c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 03 ff ff ff       	call   0xffffffffffffff12
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[   24.014524][ T1710] RSP: 002b:00007fffd937ed60 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
[   24.014526][ T1710] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f2336c3254e
[   24.014528][ T1710] RDX: 0000000000000000 RSI: 00007fffd937ee10 RDI: 0000000000000005
[   24.014529][ T1710] RBP: 00007fffd937ed70 R08: 0000000000000000 R09: 0000000000000000
[   24.014529][ T1710] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a911b75
[   24.014530][ T1710] R13: 00000000004a1620 R14: 0000000000000000 R15: 00007fffd937f4d0
| [   25.202794][ T1848] softirqs last disabled at (30388): br_device_event (./include/linux/spinlock.h:353 net/bridge/br.c:119)
| [   25.202796][ T1848] Preemption disabled at:
| [   25.202797][ T1848] 0x0
| [   25.202806][ T1848] Tainted: [W]=WARN
[   25.202807][ T1848] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   25.202809][ T1848] Call Trace:
[   25.202810][ T1848]  <TASK>
[   25.202811][ T1848]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   25.202818][ T1848]  __might_resched.cold (kernel/sched/core.c:9234)
[   25.202822][ T1848]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   25.202826][ T1848]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   25.202836][ T1848]  __kmalloc_noprof (./include/linux/sched/mm.h:322 (discriminator 2) mm/slub.c:4636 (discriminator 2) mm/slub.c:4974 (discriminator 2) mm/slub.c:5413 (discriminator 2) mm/slub.c:5439 (discriminator 2))
[   25.202838][ T1848]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   25.202845][ T1848]  ? do_raw_spin_unlock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:32 ./include/asm-generic/qspinlock.h:58 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141)
[   25.202848][ T1848]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   25.202851][ T1848]  put_chars (drivers/char/virtio_console.c:1176)
[   25.202854][ T1848]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   25.202855][ T1848]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   25.202859][ T1848]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   25.202864][ T1848]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   25.202872][ T1848]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   25.202874][ T1848]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   25.202876][ T1848]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   25.202880][ T1848]  console_emit_next_record (kernel/printk/printk.c:3183)
[   25.202884][ T1848]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   25.202886][ T1848]  ? console_flush_one_record (./include/linux/rcupdate.h:314 (discriminator 2) ./include/linux/srcu.h:439 (discriminator 2) kernel/printk/printk.c:291 (discriminator 2) kernel/printk/printk.c:3246 (discriminator 2))
[   25.202889][ T1848]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   25.202891][ T1848]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   25.202895][ T1848]  console_flush_one_record (kernel/printk/printk.c:3268)
[   25.202899][ T1848]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   25.202901][ T1848]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   25.202906][ T1848]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   25.202909][ T1848]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   25.202910][ T1848]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   25.202912][ T1848]  ? lock_acquire (./include/linux/srcutree.h:374 ./include/linux/srcu.h:541 ./include/linux/srcu.h:645 ./include/trace/events/lock.h:23 ./include/trace/events/lock.h:23 kernel/locking/lockdep.c:5871)
[   25.202916][ T1848]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   25.202918][ T1848]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   25.202920][ T1848]  vprintk_emit (kernel/printk/printk.c:2479)
[   25.202923][ T1848]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   25.202925][ T1848]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   25.202927][ T1848]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   25.202932][ T1848]  _printk (kernel/printk/printk.c:2504)
[   25.202935][ T1848]  ? snapshot_read.cold (user.c:?)
[   25.202940][ T1848]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   25.202944][ T1848]  br_set_state (net/bridge/br_stp.c:57 (discriminator 2))
[   25.202948][ T1848]  br_init_port (net/bridge/br_stp_if.c:39)
[   25.202951][ T1848]  br_stp_enable_port (net/bridge/br_stp_if.c:93)
[   25.202953][ T1848]  br_device_event (net/bridge/br.c:120)
[   25.202956][ T1848]  ? packet_sendmsg_spkt (af_packet.c:?)
[   25.202957][ T1848]  ? nlmsg_notify (./include/net/netlink.h:1165 ./include/net/netlink.h:1184 net/netlink/af_netlink.c:2599)
[   25.202964][ T1848]  notifier_call_chain (kernel/notifier.c:85)
[   25.202969][ T1848]  __dev_notify_flags (net/core/dev.c:2313 net/core/dev.c:2327 net/core/dev.c:9853)
[   25.202974][ T1848]  ? netif_change_name (net/core/dev.c:1517)
[   25.202978][ T1848]  ? netif_set_allmulti (./include/net/netdev_lock.h:33)
[   25.202980][ T1848]  ? kernel_text_address (kernel/extable.c:125 kernel/extable.c:94)
[   25.202983][ T1848]  ? __kernel_text_address (kernel/extable.c:79)
[   25.202985][ T1848]  ? write_profile (profile.c:?)
[   25.202990][ T1848]  netif_change_flags (net/core/dev.c:9882)
[   25.202993][ T1848]  do_setlink.isra.0 (net/core/rtnetlink.c:3266 (discriminator 1))
[   25.202997][ T1848]  ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1))
[   25.202999][ T1848]  ? rtnl_link_get_size (net/core/rtnetlink.c:747)
[   25.203000][ T1848]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380)
[   25.203002][ T1848]  ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2))
[   25.203005][ T1848]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   25.203007][ T1848]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   25.203009][ T1848]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   25.203011][ T1848]  ? kasan_save_stack (mm/kasan/common.c:58)
[   25.203013][ T1848]  ? kasan_save_stack (mm/kasan/common.c:57)
[   25.203014][ T1848]  ? kasan_save_track (mm/kasan/common.c:78)
[   25.203016][ T1848]  ? __kasan_kmalloc (mm/kasan/common.c:398 mm/kasan/common.c:415)
[   25.203018][ T1848]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   25.203020][ T1848]  ? snd_ac97_proc_read_main (sound/pci/ac97/ac97_proc.c:320)
[   25.203023][ T1848]  ? ___sys_sendmsg (net/socket.c:2758)
[   25.203027][ T1848]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   25.203029][ T1848]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   25.203031][ T1848]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   25.203033][ T1848]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   25.203034][ T1848]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   25.203036][ T1848]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   25.203037][ T1848]  ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22))
[   25.203039][ T1848]  ? __mutex_lock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:3188 kernel/locking/mutex.c:89 kernel/locking/mutex.c:134 kernel/locking/mutex.c:649 kernel/locking/mutex.c:821)
[   25.203042][ T1848]  ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1))
[   25.203044][ T1848]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   25.203047][ T1848]  ? ww_mutex_lock (kernel/locking/mutex.c:934)
[   25.203051][ T1848]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   25.203053][ T1848]  ? __rtnl_newlink (net/core/rtnetlink.c:4063)
[   25.203058][ T1848]  rtnl_newlink (net/core/rtnetlink.c:4215)
[   25.203063][ T1848]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   25.203065][ T1848]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   25.203070][ T1848]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   25.203071][ T1848]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   25.203074][ T1848]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   25.203075][ T1848]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   25.203079][ T1848]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   25.203081][ T1848]  rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   25.203084][ T1848]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   25.203086][ T1848]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   25.203090][ T1848]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   25.203092][ T1848]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   25.203095][ T1848]  netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   25.203097][ T1848]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   25.203100][ T1848]  ? netlink_ack (./include/linux/skbuff.h:2718)
[   25.203106][ T1848]  ? netlink_deliver_tap (./include/linux/rcupdate.h:319 (discriminator 2) ./include/linux/rcupdate.h:880 (discriminator 2) ./include/net/netns/generic.h:48 (discriminator 2) net/netlink/af_netlink.c:334 (discriminator 2))
[   25.203109][ T1848]  ? netlink_deliver_tap (./include/linux/rcupdate.h:319 (discriminator 2) ./include/linux/rcupdate.h:880 (discriminator 2) net/netlink/af_netlink.c:341 (discriminator 2))
[   25.203113][ T1848]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   25.203117][ T1848]  ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   25.203119][ T1848]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   25.203124][ T1848]  netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   25.203128][ T1848]  ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7))
[   25.203131][ T1848]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   25.203133][ T1848]  ? __import_iovec (lib/iov_iter.c:1358 lib/iov_iter.c:1373)
[   25.203139][ T1848]  __sock_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4))
[   25.203141][ T1848]  ____sys_sendmsg (net/socket.c:2713)
[   25.203144][ T1848]  ? copy_msghdr_from_user (net/socket.c:2650)
[   25.203146][ T1848]  ? sock_write_iter (net/socket.c:1269)
[   25.203148][ T1848]  ? move_addr_to_kernel (net/socket.c:258)
[   25.203155][ T1848]  ___sys_sendmsg (net/socket.c:2767)
[   25.203158][ T1848]  ? copy_msghdr_from_user (net/socket.c:2619)
[   25.203173][ T1848]  __sys_sendmsg (net/socket.c:2799)
[   25.203176][ T1848]  ? __sys_sendmsg_sock (net/socket.c:2780)
[   25.203182][ T1848]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   25.203185][ T1848]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   25.203188][ T1848]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   25.203191][ T1848]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   25.203193][ T1848] RIP: 0033:0x7fea9e12e54e
[   25.203195][ T1848] Code: 4d 89 d8 e8 b4 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 03 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 b4 bd 00 00       	call   0xbdbc
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 03 ff ff ff       	call   0xffffffffffffff3c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 03 ff ff ff       	call   0xffffffffffffff12
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[   25.203197][ T1848] RSP: 002b:00007fff57e21660 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
[   25.203200][ T1848] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007fea9e12e54e
[   25.203201][ T1848] RDX: 0000000000000000 RSI: 00007fff57e21710 RDI: 0000000000000005
[   25.203202][ T1848] RBP: 00007fff57e21670 R08: 0000000000000000 R09: 0000000000000000
[   25.203203][ T1848] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a911b76
[   25.203203][ T1848] R13: 00000000004a1620 R14: 0000000000000000 R15: 00007fff57e21dd0
| [   26.565092][   T36] softirqs last disabled at (159732): br_port_carrier_check (./include/linux/spinlock.h:353 net/bridge/br_if.c:87)
| [   26.565095][   T36] Preemption disabled at:
| [   26.565096][   T36] 0x0
| [   26.565106][   T36] Tainted: [W]=WARN
[   26.565106][   T36] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   26.565108][   T36] Workqueue: events_unbound linkwatch_event
[   26.565111][   T36] Call Trace:
[   26.565113][   T36]  <TASK>
[   26.565114][   T36]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   26.565121][   T36]  __might_resched.cold (kernel/sched/core.c:9234)
[   26.565125][   T36]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   26.565129][   T36]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   26.565133][   T36]  __kmalloc_noprof (./include/linux/sched/mm.h:322 (discriminator 2) mm/slub.c:4636 (discriminator 2) mm/slub.c:4974 (discriminator 2) mm/slub.c:5413 (discriminator 2) mm/slub.c:5439 (discriminator 2))
[   26.565135][   T36]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   26.565142][   T36]  ? do_raw_spin_unlock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:32 ./include/asm-generic/qspinlock.h:58 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141)
[   26.565144][   T36]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   26.565148][   T36]  put_chars (drivers/char/virtio_console.c:1176)
[   26.565151][   T36]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   26.565153][   T36]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   26.565156][   T36]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   26.565159][   T36]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   26.565163][   T36]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   26.565167][   T36]  ? mark_usage (kernel/locking/lockdep.c:4690)
[   26.565169][   T36]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   26.565170][   T36]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   26.565175][   T36]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   26.565176][   T36]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   26.565181][   T36]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   26.565185][   T36]  console_emit_next_record (kernel/printk/printk.c:3183)
[   26.565189][   T36]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   26.565191][   T36]  ? console_flush_one_record (./include/linux/rcupdate.h:314 (discriminator 2) ./include/linux/srcu.h:439 (discriminator 2) kernel/printk/printk.c:291 (discriminator 2) kernel/printk/printk.c:3246 (discriminator 2))
[   26.565194][   T36]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   26.565196][   T36]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   26.565200][   T36]  console_flush_one_record (kernel/printk/printk.c:3268)
[   26.565204][   T36]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   26.565206][   T36]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   26.565212][   T36]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   26.565214][   T36]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   26.565216][   T36]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   26.565218][   T36]  ? lock_acquire (./include/linux/srcutree.h:374 ./include/linux/srcu.h:541 ./include/linux/srcu.h:645 ./include/trace/events/lock.h:23 ./include/trace/events/lock.h:23 kernel/locking/lockdep.c:5871)
[   26.565222][   T36]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   26.565223][   T36]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   26.565226][   T36]  vprintk_emit (kernel/printk/printk.c:2479)
[   26.565229][   T36]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   26.565231][   T36]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   26.565233][   T36]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   26.565237][   T36]  _printk (kernel/printk/printk.c:2504)
[   26.565241][   T36]  ? snapshot_read.cold (user.c:?)
[   26.565246][   T36]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   26.565250][   T36]  br_set_state (net/bridge/br_stp.c:57 (discriminator 2))
[   26.565254][   T36]  br_init_port (net/bridge/br_stp_if.c:39)
[   26.565256][   T36]  br_stp_enable_port (net/bridge/br_stp_if.c:93)
[   26.565258][   T36]  br_port_carrier_check (net/bridge/br_if.c:90)
[   26.565262][   T36]  br_device_event (net/bridge/br.c:101)
[   26.565265][   T36]  ? packet_sendmsg_spkt (af_packet.c:?)
[   26.565267][   T36]  ? nlmsg_notify (./include/net/netlink.h:1165 ./include/net/netlink.h:1184 net/netlink/af_netlink.c:2599)
[   26.565273][   T36]  notifier_call_chain (kernel/notifier.c:85)
[   26.565279][   T36]  netif_state_change (net/core/dev.c:1625)
[   26.565284][   T36]  ? call_netdevice_notifiers_info (./include/net/net_namespace.h:422 (discriminator 7))
[   26.565289][   T36]  ? linkwatch_do_dev (net/core/link_watch.c:182 net/core/link_watch.c:166)
[   26.565291][   T36]  __linkwatch_run_queue (net/core/link_watch.c:240)
[   26.565294][   T36]  ? linkwatch_do_dev (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   26.565296][   T36]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   26.565301][   T36]  linkwatch_event (net/core/link_watch.c:314 (discriminator 11))
[   26.565303][   T36]  ? __linkwatch_run_queue (net/core/link_watch.c:213)
[   26.565306][   T36]  process_one_work (kernel/workqueue.c:3387)
[   26.565313][   T36]  ? __queue_delayed_work (kernel/workqueue.c:2622)
[   26.565316][   T36]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   26.565323][   T36]  worker_thread (kernel/workqueue.c:3470 kernel/workqueue.c:3551)
[   26.565331][   T36]  ? rescuer_thread (./include/linux/list.h:419 (discriminator 3))
[   26.565333][   T36]  kthread (kernel/kthread.c:436)
[   26.565335][   T36]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[   26.565338][   T36]  ? kthread_affine_preferred (kernel/kthread.c:857)
[   26.565341][   T36]  ret_from_fork (arch/x86/kernel/process.c:158)
[   26.565345][   T36]  ? arch_exit_to_user_mode_prepare.isra.0 (arch/x86/entry/vdso/vma.c:80 (discriminator 1))
[   26.565349][   T36]  ? __switch_to (arch/x86/kernel/process_64.c:403 arch/x86/kernel/process_64.c:663)
[   26.565352][   T36]  ? kthread_affine_preferred (kernel/kthread.c:857)
[   26.565355][   T36]  ret_from_fork_asm (arch/x86/entry/entry_64.S:245)
| [   27.866695][ T2098] softirqs last disabled at (14306): br_device_event (./include/linux/spinlock.h:353 net/bridge/br.c:119)
| [   27.866697][ T2098] Preemption disabled at:
| [   27.866698][ T2098] 0x0
| [   27.866707][ T2098] Tainted: [W]=WARN
[   27.866708][ T2098] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   27.866710][ T2098] Call Trace:
[   27.866712][ T2098]  <TASK>
[   27.866713][ T2098]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   27.866720][ T2098]  __might_resched.cold (kernel/sched/core.c:9234)
[   27.866724][ T2098]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   27.866729][ T2098]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   27.866733][ T2098]  __kmalloc_noprof (./include/linux/sched/mm.h:322 (discriminator 2) mm/slub.c:4636 (discriminator 2) mm/slub.c:4974 (discriminator 2) mm/slub.c:5413 (discriminator 2) mm/slub.c:5439 (discriminator 2))
[   27.866735][ T2098]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   27.866741][ T2098]  ? do_raw_spin_unlock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:32 ./include/asm-generic/qspinlock.h:58 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141)
[   27.866744][ T2098]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   27.866748][ T2098]  put_chars (drivers/char/virtio_console.c:1176)
[   27.866750][ T2098]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   27.866751][ T2098]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   27.866755][ T2098]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   27.866760][ T2098]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   27.866767][ T2098]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   27.866770][ T2098]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   27.866772][ T2098]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   27.866776][ T2098]  console_emit_next_record (kernel/printk/printk.c:3183)
[   27.866780][ T2098]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   27.866782][ T2098]  ? console_flush_one_record (./include/linux/rcupdate.h:314 (discriminator 2) ./include/linux/srcu.h:439 (discriminator 2) kernel/printk/printk.c:291 (discriminator 2) kernel/printk/printk.c:3246 (discriminator 2))
[   27.866785][ T2098]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   27.866787][ T2098]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   27.866790][ T2098]  console_flush_one_record (kernel/printk/printk.c:3268)
[   27.866795][ T2098]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   27.866796][ T2098]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   27.866802][ T2098]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   27.866805][ T2098]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   27.866806][ T2098]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   27.866808][ T2098]  ? lock_acquire (./include/linux/srcutree.h:374 ./include/linux/srcu.h:541 ./include/linux/srcu.h:645 ./include/trace/events/lock.h:23 ./include/trace/events/lock.h:23 kernel/locking/lockdep.c:5871)
[   27.866812][ T2098]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   27.866813][ T2098]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   27.866816][ T2098]  vprintk_emit (kernel/printk/printk.c:2479)
[   27.866819][ T2098]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   27.866821][ T2098]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   27.866823][ T2098]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   27.866828][ T2098]  _printk (kernel/printk/printk.c:2504)
[   27.866831][ T2098]  ? snapshot_read.cold (user.c:?)
[   27.866836][ T2098]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   27.866840][ T2098]  br_set_state (net/bridge/br_stp.c:57 (discriminator 2))
[   27.866844][ T2098]  br_init_port (net/bridge/br_stp_if.c:39)
[   27.866847][ T2098]  br_stp_enable_port (net/bridge/br_stp_if.c:93)
[   27.866849][ T2098]  br_device_event (net/bridge/br.c:120)
[   27.866856][ T2098]  ? packet_sendmsg_spkt (af_packet.c:?)
[   27.866857][ T2098]  ? nlmsg_notify (./include/net/netlink.h:1165 ./include/net/netlink.h:1184 net/netlink/af_netlink.c:2599)
[   27.866864][ T2098]  notifier_call_chain (kernel/notifier.c:85)
[   27.866869][ T2098]  __dev_notify_flags (net/core/dev.c:2313 net/core/dev.c:2327 net/core/dev.c:9853)
[   27.866874][ T2098]  ? netif_change_name (net/core/dev.c:1517)
[   27.866878][ T2098]  ? netif_set_allmulti (./include/net/netdev_lock.h:33)
[   27.866880][ T2098]  ? kernel_text_address (kernel/extable.c:125 kernel/extable.c:94)
[   27.866883][ T2098]  ? __kernel_text_address (kernel/extable.c:79)
[   27.866885][ T2098]  ? write_profile (profile.c:?)
[   27.866890][ T2098]  netif_change_flags (net/core/dev.c:9882)
[   27.866893][ T2098]  do_setlink.isra.0 (net/core/rtnetlink.c:3266 (discriminator 1))
[   27.866897][ T2098]  ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1))
[   27.866899][ T2098]  ? rtnl_link_get_size (net/core/rtnetlink.c:747)
[   27.866900][ T2098]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380)
[   27.866902][ T2098]  ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2))
[   27.866905][ T2098]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   27.866907][ T2098]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   27.866909][ T2098]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   27.866911][ T2098]  ? kasan_save_stack (mm/kasan/common.c:58)
[   27.866913][ T2098]  ? kasan_save_stack (mm/kasan/common.c:57)
[   27.866915][ T2098]  ? kasan_save_track (mm/kasan/common.c:78)
[   27.866916][ T2098]  ? __kasan_kmalloc (mm/kasan/common.c:398 mm/kasan/common.c:415)
[   27.866918][ T2098]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   27.866920][ T2098]  ? snd_ac97_proc_read_main (sound/pci/ac97/ac97_proc.c:320)
[   27.866923][ T2098]  ? ___sys_sendmsg (net/socket.c:2758)
[   27.866926][ T2098]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   27.866928][ T2098]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   27.866931][ T2098]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   27.866933][ T2098]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   27.866934][ T2098]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   27.866935][ T2098]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   27.866937][ T2098]  ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22))
[   27.866939][ T2098]  ? __mutex_lock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:3188 kernel/locking/mutex.c:89 kernel/locking/mutex.c:134 kernel/locking/mutex.c:649 kernel/locking/mutex.c:821)
[   27.866942][ T2098]  ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1))
[   27.866944][ T2098]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   27.866947][ T2098]  ? ww_mutex_lock (kernel/locking/mutex.c:934)
[   27.866950][ T2098]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   27.866952][ T2098]  ? __rtnl_newlink (net/core/rtnetlink.c:4063)
[   27.866957][ T2098]  rtnl_newlink (net/core/rtnetlink.c:4215)
[   27.866963][ T2098]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   27.866964][ T2098]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   27.866969][ T2098]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   27.866971][ T2098]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   27.866973][ T2098]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   27.866974][ T2098]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   27.866978][ T2098]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   27.866980][ T2098]  rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   27.866983][ T2098]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   27.866984][ T2098]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   27.866989][ T2098]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   27.866991][ T2098]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   27.866994][ T2098]  netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   27.866996][ T2098]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   27.866999][ T2098]  ? netlink_ack (./include/linux/skbuff.h:2718)
[   27.867005][ T2098]  ? netlink_deliver_tap (./include/linux/rcupdate.h:319 (discriminator 2) ./include/linux/rcupdate.h:880 (discriminator 2) ./include/net/netns/generic.h:48 (discriminator 2) net/netlink/af_netlink.c:334 (discriminator 2))
[   27.867007][ T2098]  ? netlink_deliver_tap (./include/linux/rcupdate.h:319 (discriminator 2) ./include/linux/rcupdate.h:880 (discriminator 2) net/netlink/af_netlink.c:341 (discriminator 2))
[   27.867011][ T2098]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   27.867015][ T2098]  ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   27.867018][ T2098]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   27.867022][ T2098]  netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   27.867026][ T2098]  ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7))
[   27.867029][ T2098]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   27.867031][ T2098]  ? __import_iovec (lib/iov_iter.c:1358 lib/iov_iter.c:1373)
[   27.867036][ T2098]  __sock_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4))
[   27.867039][ T2098]  ____sys_sendmsg (net/socket.c:2713)
[   27.867041][ T2098]  ? copy_msghdr_from_user (net/socket.c:2650)
[   27.867043][ T2098]  ? sock_write_iter (net/socket.c:1269)
[   27.867045][ T2098]  ? move_addr_to_kernel (net/socket.c:258)
[   27.867052][ T2098]  ___sys_sendmsg (net/socket.c:2767)
[   27.867055][ T2098]  ? copy_msghdr_from_user (net/socket.c:2619)
[   27.867071][ T2098]  __sys_sendmsg (net/socket.c:2799)
[   27.867073][ T2098]  ? __sys_sendmsg_sock (net/socket.c:2780)
[   27.867080][ T2098]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   27.867083][ T2098]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   27.867085][ T2098]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   27.867088][ T2098]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   27.867090][ T2098] RIP: 0033:0x7fc0979e854e
[   27.867093][ T2098] Code: 4d 89 d8 e8 b4 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 03 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 b4 bd 00 00       	call   0xbdbc
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 03 ff ff ff       	call   0xffffffffffffff3c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 03 ff ff ff       	call   0xffffffffffffff12
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[   27.867095][ T2098] RSP: 002b:00007ffe6367d250 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
[   27.867097][ T2098] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007fc0979e854e
[   27.867099][ T2098] RDX: 0000000000000000 RSI: 00007ffe6367d300 RDI: 0000000000000005
[   27.867100][ T2098] RBP: 00007ffe6367d260 R08: 0000000000000000 R09: 0000000000000000
[   27.867100][ T2098] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a911b79
[   27.867101][ T2098] R13: 00000000004a1620 R14: 0000000000000000 R15: 00007ffe6367d9c0
| [   29.270735][ T2224] softirqs last disabled at (14828): br_device_event (./include/linux/spinlock.h:353 net/bridge/br.c:119)
| [   29.270738][ T2224] Preemption disabled at:
| [   29.270738][ T2224] 0x0
| [   29.270749][ T2224] Tainted: [W]=WARN
[   29.270749][ T2224] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   29.270751][ T2224] Call Trace:
[   29.270753][ T2224]  <TASK>
[   29.270754][ T2224]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   29.270761][ T2224]  __might_resched.cold (kernel/sched/core.c:9234)
[   29.270765][ T2224]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   29.270770][ T2224]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   29.270774][ T2224]  __kmalloc_noprof (./include/linux/sched/mm.h:322 (discriminator 2) mm/slub.c:4636 (discriminator 2) mm/slub.c:4974 (discriminator 2) mm/slub.c:5413 (discriminator 2) mm/slub.c:5439 (discriminator 2))
[   29.270776][ T2224]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   29.270782][ T2224]  ? do_raw_spin_unlock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:32 ./include/asm-generic/qspinlock.h:58 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141)
[   29.270785][ T2224]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   29.270788][ T2224]  put_chars (drivers/char/virtio_console.c:1176)
[   29.270791][ T2224]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   29.270792][ T2224]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   29.270795][ T2224]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   29.270801][ T2224]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   29.270808][ T2224]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   29.270811][ T2224]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   29.270813][ T2224]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   29.270817][ T2224]  console_emit_next_record (kernel/printk/printk.c:3183)
[   29.270821][ T2224]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   29.270823][ T2224]  ? console_flush_one_record (./include/linux/rcupdate.h:314 (discriminator 2) ./include/linux/srcu.h:439 (discriminator 2) kernel/printk/printk.c:291 (discriminator 2) kernel/printk/printk.c:3246 (discriminator 2))
[   29.270826][ T2224]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   29.270828][ T2224]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   29.270831][ T2224]  console_flush_one_record (kernel/printk/printk.c:3268)
[   29.270836][ T2224]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   29.270837][ T2224]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   29.270843][ T2224]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   29.270845][ T2224]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   29.270847][ T2224]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   29.270849][ T2224]  ? lock_acquire (./include/linux/srcutree.h:374 ./include/linux/srcu.h:541 ./include/linux/srcu.h:645 ./include/trace/events/lock.h:23 ./include/trace/events/lock.h:23 kernel/locking/lockdep.c:5871)
[   29.270852][ T2224]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   29.270854][ T2224]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   29.270857][ T2224]  vprintk_emit (kernel/printk/printk.c:2479)
[   29.270864][ T2224]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   29.270866][ T2224]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   29.270868][ T2224]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   29.270873][ T2224]  _printk (kernel/printk/printk.c:2504)
[   29.270876][ T2224]  ? snapshot_read.cold (user.c:?)
[   29.270881][ T2224]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   29.270885][ T2224]  br_set_state (net/bridge/br_stp.c:57 (discriminator 2))
[   29.270890][ T2224]  br_init_port (net/bridge/br_stp_if.c:39)
[   29.270893][ T2224]  br_stp_enable_port (net/bridge/br_stp_if.c:93)
[   29.270895][ T2224]  br_device_event (net/bridge/br.c:120)
[   29.270898][ T2224]  ? packet_sendmsg_spkt (af_packet.c:?)
[   29.270899][ T2224]  ? nlmsg_notify (./include/net/netlink.h:1165 ./include/net/netlink.h:1184 net/netlink/af_netlink.c:2599)
[   29.270906][ T2224]  notifier_call_chain (kernel/notifier.c:85)
[   29.270911][ T2224]  __dev_notify_flags (net/core/dev.c:2313 net/core/dev.c:2327 net/core/dev.c:9853)
[   29.270916][ T2224]  ? netif_change_name (net/core/dev.c:1517)
[   29.270920][ T2224]  ? netif_set_allmulti (./include/net/netdev_lock.h:33)
[   29.270922][ T2224]  ? kernel_text_address (kernel/extable.c:125 kernel/extable.c:94)
[   29.270926][ T2224]  ? __kernel_text_address (kernel/extable.c:79)
[   29.270927][ T2224]  ? write_profile (profile.c:?)
[   29.270932][ T2224]  netif_change_flags (net/core/dev.c:9882)
[   29.270936][ T2224]  do_setlink.isra.0 (net/core/rtnetlink.c:3266 (discriminator 1))
[   29.270939][ T2224]  ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1))
[   29.270941][ T2224]  ? rtnl_link_get_size (net/core/rtnetlink.c:747)
[   29.270943][ T2224]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380)
[   29.270945][ T2224]  ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2))
[   29.270948][ T2224]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   29.270950][ T2224]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   29.270952][ T2224]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   29.270954][ T2224]  ? kasan_save_stack (mm/kasan/common.c:58)
[   29.270956][ T2224]  ? kasan_save_stack (mm/kasan/common.c:57)
[   29.270957][ T2224]  ? kasan_save_track (mm/kasan/common.c:78)
[   29.270958][ T2224]  ? __kasan_kmalloc (mm/kasan/common.c:398 mm/kasan/common.c:415)
[   29.270961][ T2224]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   29.270963][ T2224]  ? snd_ac97_proc_read_main (sound/pci/ac97/ac97_proc.c:320)
[   29.270966][ T2224]  ? ___sys_sendmsg (net/socket.c:2758)
[   29.270969][ T2224]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   29.270971][ T2224]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   29.270974][ T2224]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   29.270975][ T2224]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   29.270977][ T2224]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   29.270978][ T2224]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   29.270980][ T2224]  ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22))
[   29.270982][ T2224]  ? __mutex_lock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:3188 kernel/locking/mutex.c:89 kernel/locking/mutex.c:134 kernel/locking/mutex.c:649 kernel/locking/mutex.c:821)
[   29.270985][ T2224]  ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1))
[   29.270987][ T2224]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   29.270990][ T2224]  ? ww_mutex_lock (kernel/locking/mutex.c:934)
[   29.270993][ T2224]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   29.270995][ T2224]  ? __rtnl_newlink (net/core/rtnetlink.c:4063)
[   29.271001][ T2224]  rtnl_newlink (net/core/rtnetlink.c:4215)
[   29.271006][ T2224]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   29.271008][ T2224]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   29.271012][ T2224]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   29.271014][ T2224]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   29.271016][ T2224]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   29.271018][ T2224]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   29.271022][ T2224]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   29.271024][ T2224]  rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   29.271027][ T2224]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   29.271028][ T2224]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   29.271033][ T2224]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   29.271034][ T2224]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   29.271038][ T2224]  netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   29.271040][ T2224]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   29.271043][ T2224]  ? netlink_ack (./include/linux/skbuff.h:2718)
[   29.271049][ T2224]  ? netlink_deliver_tap (./include/linux/rcupdate.h:319 (discriminator 2) ./include/linux/rcupdate.h:880 (discriminator 2) ./include/net/netns/generic.h:48 (discriminator 2) net/netlink/af_netlink.c:334 (discriminator 2))
[   29.271051][ T2224]  ? netlink_deliver_tap (./include/linux/rcupdate.h:319 (discriminator 2) ./include/linux/rcupdate.h:880 (discriminator 2) net/netlink/af_netlink.c:341 (discriminator 2))
[   29.271055][ T2224]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   29.271059][ T2224]  ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   29.271062][ T2224]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   29.271066][ T2224]  netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   29.271070][ T2224]  ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7))
[   29.271074][ T2224]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   29.271075][ T2224]  ? __import_iovec (lib/iov_iter.c:1358 lib/iov_iter.c:1373)
[   29.271080][ T2224]  __sock_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4))
[   29.271083][ T2224]  ____sys_sendmsg (net/socket.c:2713)
[   29.271085][ T2224]  ? copy_msghdr_from_user (net/socket.c:2650)
[   29.271088][ T2224]  ? sock_write_iter (net/socket.c:1269)
[   29.271089][ T2224]  ? move_addr_to_kernel (net/socket.c:258)
[   29.271096][ T2224]  ___sys_sendmsg (net/socket.c:2767)
[   29.271099][ T2224]  ? copy_msghdr_from_user (net/socket.c:2619)
[   29.271115][ T2224]  __sys_sendmsg (net/socket.c:2799)
[   29.271117][ T2224]  ? __sys_sendmsg_sock (net/socket.c:2780)
[   29.271124][ T2224]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   29.271127][ T2224]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   29.271129][ T2224]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   29.271132][ T2224]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   29.271135][ T2224] RIP: 0033:0x7f304b9ed54e
[   29.271137][ T2224] Code: 4d 89 d8 e8 b4 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 03 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 b4 bd 00 00       	call   0xbdbc
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 03 ff ff ff       	call   0xffffffffffffff3c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 03 ff ff ff       	call   0xffffffffffffff12
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[   29.271138][ T2224] RSP: 002b:00007ffdc5a7cf00 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
[   29.271141][ T2224] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f304b9ed54e
[   29.271142][ T2224] RDX: 0000000000000000 RSI: 00007ffdc5a7cfb0 RDI: 0000000000000005
[   29.271143][ T2224] RBP: 00007ffdc5a7cf10 R08: 0000000000000000 R09: 0000000000000000
[   29.271144][ T2224] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a911b7a
[   29.271145][ T2224] R13: 00000000004a1620 R14: 0000000000000000 R15: 00007ffdc5a7d670
| [   30.939971][ T2361] softirqs last disabled at (16534): br_device_event (./include/linux/spinlock.h:353 net/bridge/br.c:109)
| [   30.939973][ T2361] Preemption disabled at:
| [   30.939974][ T2361] 0x0
| [   30.939984][ T2361] Tainted: [W]=WARN
[   30.939984][ T2361] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   30.939986][ T2361] Call Trace:
[   30.939988][ T2361]  <TASK>
[   30.939989][ T2361]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   30.939996][ T2361]  __might_resched.cold (kernel/sched/core.c:9234)
[   30.940000][ T2361]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   30.940004][ T2361]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   30.940009][ T2361]  __kmalloc_noprof (./include/linux/sched/mm.h:322 (discriminator 2) mm/slub.c:4636 (discriminator 2) mm/slub.c:4974 (discriminator 2) mm/slub.c:5413 (discriminator 2) mm/slub.c:5439 (discriminator 2))
[   30.940011][ T2361]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   30.940017][ T2361]  ? do_raw_spin_unlock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:32 ./include/asm-generic/qspinlock.h:58 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141)
[   30.940020][ T2361]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   30.940024][ T2361]  put_chars (drivers/char/virtio_console.c:1176)
[   30.940026][ T2361]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   30.940032][ T2361]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   30.940040][ T2361]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   30.940043][ T2361]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   30.940048][ T2361]  console_emit_next_record (kernel/printk/printk.c:3183)
[   30.940052][ T2361]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   30.940054][ T2361]  ? console_flush_one_record (./include/linux/rcupdate.h:314 (discriminator 2) ./include/linux/srcu.h:439 (discriminator 2) kernel/printk/printk.c:291 (discriminator 2) kernel/printk/printk.c:3246 (discriminator 2))
[   30.940057][ T2361]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   30.940059][ T2361]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   30.940063][ T2361]  console_flush_one_record (kernel/printk/printk.c:3268)
[   30.940067][ T2361]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   30.940069][ T2361]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   30.940074][ T2361]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   30.940077][ T2361]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   30.940079][ T2361]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   30.940081][ T2361]  ? lock_acquire (./include/linux/srcutree.h:374 ./include/linux/srcu.h:541 ./include/linux/srcu.h:645 ./include/trace/events/lock.h:23 ./include/trace/events/lock.h:23 kernel/locking/lockdep.c:5871)
[   30.940084][ T2361]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   30.940086][ T2361]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   30.940089][ T2361]  vprintk_emit (kernel/printk/printk.c:2479)
[   30.940092][ T2361]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   30.940093][ T2361]  ? mark_held_locks (kernel/locking/lockdep.c:4341)
[   30.940095][ T2361]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   30.940097][ T2361]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   30.940102][ T2361]  _printk (kernel/printk/printk.c:2504)
[   30.940106][ T2361]  ? snapshot_read.cold (user.c:?)
[   30.940113][ T2361]  br_set_state (net/bridge/br_stp.c:57 (discriminator 2))
[   30.940118][ T2361]  br_stp_disable_port (net/bridge/br_stp_if.c:106)
[   30.940121][ T2361]  br_device_event (net/bridge/br.c:111)
[   30.940123][ T2361]  ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:211 (discriminator 1) kernel/locking/spinlock.c:221 (discriminator 1))
[   30.940127][ T2361]  ? packet_sendmsg_spkt (af_packet.c:?)
[   30.940133][ T2361]  notifier_call_chain (kernel/notifier.c:85)
[   30.940138][ T2361]  __dev_notify_flags (net/core/dev.c:2313 net/core/dev.c:2327 net/core/dev.c:9855)
[   30.940143][ T2361]  ? netif_change_name (net/core/dev.c:1517)
[   30.940147][ T2361]  ? netif_set_allmulti (./include/net/netdev_lock.h:33)
[   30.940150][ T2361]  ? __kernel_text_address (kernel/extable.c:79)
[   30.940152][ T2361]  ? write_profile (profile.c:?)
[   30.940157][ T2361]  netif_change_flags (net/core/dev.c:9882)
[   30.940161][ T2361]  do_setlink.isra.0 (net/core/rtnetlink.c:3266 (discriminator 1))
[   30.940164][ T2361]  ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1))
[   30.940167][ T2361]  ? rtnl_link_get_size (net/core/rtnetlink.c:747)
[   30.940168][ T2361]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380)
[   30.940170][ T2361]  ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2))
[   30.940173][ T2361]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   30.940175][ T2361]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   30.940176][ T2361]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   30.940179][ T2361]  ? kasan_save_stack (mm/kasan/common.c:58)
[   30.940181][ T2361]  ? kasan_save_stack (mm/kasan/common.c:57)
[   30.940182][ T2361]  ? kasan_save_track (mm/kasan/common.c:78)
[   30.940184][ T2361]  ? __kasan_kmalloc (mm/kasan/common.c:398 mm/kasan/common.c:415)
[   30.940186][ T2361]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   30.940188][ T2361]  ? snd_ac97_proc_read_main (sound/pci/ac97/ac97_proc.c:320)
[   30.940191][ T2361]  ? ___sys_sendmsg (net/socket.c:2758)
[   30.940194][ T2361]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   30.940196][ T2361]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   30.940199][ T2361]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   30.940201][ T2361]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   30.940202][ T2361]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   30.940203][ T2361]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   30.940205][ T2361]  ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22))
[   30.940207][ T2361]  ? __mutex_lock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:3188 kernel/locking/mutex.c:89 kernel/locking/mutex.c:134 kernel/locking/mutex.c:649 kernel/locking/mutex.c:821)
[   30.940208][ T2361]  ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1))
[   30.940210][ T2361]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   30.940214][ T2361]  ? ww_mutex_lock (kernel/locking/mutex.c:934)
[   30.940217][ T2361]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   30.940220][ T2361]  ? __rtnl_newlink (net/core/rtnetlink.c:4063)
[   30.940225][ T2361]  rtnl_newlink (net/core/rtnetlink.c:4215)
[   30.940230][ T2361]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   30.940232][ T2361]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   30.940236][ T2361]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   30.940238][ T2361]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   30.940241][ T2361]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   30.940242][ T2361]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   30.940246][ T2361]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   30.940248][ T2361]  rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   30.940251][ T2361]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   30.940253][ T2361]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   30.940257][ T2361]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   30.940259][ T2361]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   30.940262][ T2361]  netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   30.940265][ T2361]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   30.940268][ T2361]  ? netlink_ack (./include/linux/skbuff.h:2718)
[   30.940274][ T2361]  ? netlink_deliver_tap (./include/linux/rcupdate.h:319 (discriminator 2) ./include/linux/rcupdate.h:880 (discriminator 2) ./include/net/netns/generic.h:48 (discriminator 2) net/netlink/af_netlink.c:334 (discriminator 2))
[   30.940276][ T2361]  ? netlink_deliver_tap (./include/linux/rcupdate.h:319 (discriminator 2) ./include/linux/rcupdate.h:880 (discriminator 2) net/netlink/af_netlink.c:341 (discriminator 2))
[   30.940281][ T2361]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   30.940285][ T2361]  ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   30.940287][ T2361]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   30.940291][ T2361]  netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   30.940295][ T2361]  ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7))
[   30.940299][ T2361]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   30.940300][ T2361]  ? __import_iovec (lib/iov_iter.c:1358 lib/iov_iter.c:1373)
[   30.940306][ T2361]  __sock_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4))
[   30.940308][ T2361]  ____sys_sendmsg (net/socket.c:2713)
[   30.940311][ T2361]  ? copy_msghdr_from_user (net/socket.c:2650)
[   30.940313][ T2361]  ? sock_write_iter (net/socket.c:1269)
[   30.940314][ T2361]  ? move_addr_to_kernel (net/socket.c:258)
[   30.940322][ T2361]  ___sys_sendmsg (net/socket.c:2767)
[   30.940324][ T2361]  ? copy_msghdr_from_user (net/socket.c:2619)
[   30.940340][ T2361]  __sys_sendmsg (net/socket.c:2799)
[   30.940343][ T2361]  ? __sys_sendmsg_sock (net/socket.c:2780)
[   30.940349][ T2361]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   30.940352][ T2361]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   30.940355][ T2361]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   30.940358][ T2361]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   30.940360][ T2361] RIP: 0033:0x7fb2ab81c54e
[   30.940362][ T2361] Code: 4d 89 d8 e8 b4 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 03 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 b4 bd 00 00       	call   0xbdbc
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 03 ff ff ff       	call   0xffffffffffffff3c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 03 ff ff ff       	call   0xffffffffffffff12
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[   30.940364][ T2361] RSP: 002b:00007fffc689f870 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
[   30.940367][ T2361] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007fb2ab81c54e
[   30.940368][ T2361] RDX: 0000000000000000 RSI: 00007fffc689f920 RDI: 0000000000000005
[   30.940369][ T2361] RBP: 00007fffc689f880 R08: 0000000000000000 R09: 0000000000000000
[   30.940370][ T2361] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a911b7c
[   30.940370][ T2361] R13: 00000000004a1620 R14: 0000000000000000 R15: 00007fffc689ffe0
| [   32.141479][ T2471] softirqs last disabled at (13138): br_device_event (./include/linux/spinlock.h:353 net/bridge/br.c:119)
| [   32.141481][ T2471] Preemption disabled at:
| [   32.141482][ T2471] 0x0
| [   32.141491][ T2471] Tainted: [W]=WARN
[   32.141492][ T2471] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   32.141494][ T2471] Call Trace:
[   32.141495][ T2471]  <TASK>
[   32.141497][ T2471]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   32.141504][ T2471]  __might_resched.cold (kernel/sched/core.c:9234)
[   32.141508][ T2471]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   32.141512][ T2471]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   32.141517][ T2471]  __kmalloc_noprof (./include/linux/sched/mm.h:322 (discriminator 2) mm/slub.c:4636 (discriminator 2) mm/slub.c:4974 (discriminator 2) mm/slub.c:5413 (discriminator 2) mm/slub.c:5439 (discriminator 2))
[   32.141519][ T2471]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   32.141525][ T2471]  ? do_raw_spin_unlock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:32 ./include/asm-generic/qspinlock.h:58 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141)
[   32.141528][ T2471]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   32.141532][ T2471]  put_chars (drivers/char/virtio_console.c:1176)
[   32.141534][ T2471]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   32.141535][ T2471]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   32.141539][ T2471]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   32.141544][ T2471]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   32.141551][ T2471]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   32.141554][ T2471]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   32.141555][ T2471]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   32.141559][ T2471]  console_emit_next_record (kernel/printk/printk.c:3183)
[   32.141563][ T2471]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   32.141565][ T2471]  ? console_flush_one_record (./include/linux/rcupdate.h:314 (discriminator 2) ./include/linux/srcu.h:439 (discriminator 2) kernel/printk/printk.c:291 (discriminator 2) kernel/printk/printk.c:3246 (discriminator 2))
[   32.141568][ T2471]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   32.141570][ T2471]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   32.141574][ T2471]  console_flush_one_record (kernel/printk/printk.c:3268)
[   32.141578][ T2471]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   32.141580][ T2471]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   32.141585][ T2471]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   32.141588][ T2471]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   32.141590][ T2471]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   32.141592][ T2471]  ? lock_acquire (./include/linux/srcutree.h:374 ./include/linux/srcu.h:541 ./include/linux/srcu.h:645 ./include/trace/events/lock.h:23 ./include/trace/events/lock.h:23 kernel/locking/lockdep.c:5871)
[   32.141595][ T2471]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   32.141597][ T2471]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   32.141599][ T2471]  vprintk_emit (kernel/printk/printk.c:2479)
[   32.141602][ T2471]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   32.141605][ T2471]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   32.141606][ T2471]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   32.141611][ T2471]  _printk (kernel/printk/printk.c:2504)
[   32.141614][ T2471]  ? snapshot_read.cold (user.c:?)
[   32.141619][ T2471]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   32.141623][ T2471]  br_set_state (net/bridge/br_stp.c:57 (discriminator 2))
[   32.141628][ T2471]  br_init_port (net/bridge/br_stp_if.c:39)
[   32.141630][ T2471]  br_stp_enable_port (net/bridge/br_stp_if.c:93)
[   32.141632][ T2471]  br_device_event (net/bridge/br.c:120)
[   32.141635][ T2471]  ? packet_sendmsg_spkt (af_packet.c:?)
[   32.141636][ T2471]  ? nlmsg_notify (./include/net/netlink.h:1165 ./include/net/netlink.h:1184 net/netlink/af_netlink.c:2599)
[   32.141643][ T2471]  notifier_call_chain (kernel/notifier.c:85)
[   32.141649][ T2471]  __dev_notify_flags (net/core/dev.c:2313 net/core/dev.c:2327 net/core/dev.c:9853)
[   32.141653][ T2471]  ? netif_change_name (net/core/dev.c:1517)
[   32.141657][ T2471]  ? netif_set_allmulti (./include/net/netdev_lock.h:33)
[   32.141660][ T2471]  ? kernel_text_address (kernel/extable.c:125 kernel/extable.c:94)
[   32.141663][ T2471]  ? __kernel_text_address (kernel/extable.c:79)
[   32.141664][ T2471]  ? write_profile (profile.c:?)
[   32.141669][ T2471]  netif_change_flags (net/core/dev.c:9882)
[   32.141673][ T2471]  do_setlink.isra.0 (net/core/rtnetlink.c:3266 (discriminator 1))
[   32.141676][ T2471]  ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1))
[   32.141678][ T2471]  ? rtnl_link_get_size (net/core/rtnetlink.c:747)
[   32.141679][ T2471]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380)
[   32.141681][ T2471]  ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2))
[   32.141684][ T2471]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   32.141686][ T2471]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   32.141688][ T2471]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   32.141690][ T2471]  ? kasan_save_stack (mm/kasan/common.c:58)
[   32.141693][ T2471]  ? kasan_save_stack (mm/kasan/common.c:57)
[   32.141694][ T2471]  ? kasan_save_track (mm/kasan/common.c:78)
[   32.141695][ T2471]  ? __kasan_kmalloc (mm/kasan/common.c:398 mm/kasan/common.c:415)
[   32.141697][ T2471]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   32.141699][ T2471]  ? snd_ac97_proc_read_main (sound/pci/ac97/ac97_proc.c:320)
[   32.141702][ T2471]  ? ___sys_sendmsg (net/socket.c:2758)
[   32.141706][ T2471]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   32.141708][ T2471]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   32.141711][ T2471]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   32.141712][ T2471]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   32.141714][ T2471]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   32.141715][ T2471]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   32.141717][ T2471]  ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22))
[   32.141719][ T2471]  ? __mutex_lock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:3188 kernel/locking/mutex.c:89 kernel/locking/mutex.c:134 kernel/locking/mutex.c:649 kernel/locking/mutex.c:821)
[   32.141721][ T2471]  ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1))
[   32.141723][ T2471]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   32.141726][ T2471]  ? ww_mutex_lock (kernel/locking/mutex.c:934)
[   32.141730][ T2471]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   32.141732][ T2471]  ? __rtnl_newlink (net/core/rtnetlink.c:4063)
[   32.141737][ T2471]  rtnl_newlink (net/core/rtnetlink.c:4215)
[   32.141742][ T2471]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   32.141744][ T2471]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   32.141749][ T2471]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   32.141751][ T2471]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   32.141753][ T2471]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   32.141755][ T2471]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   32.141758][ T2471]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   32.141760][ T2471]  rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   32.141763][ T2471]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   32.141765][ T2471]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   32.141769][ T2471]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   32.141771][ T2471]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   32.141774][ T2471]  netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   32.141776][ T2471]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   32.141779][ T2471]  ? netlink_ack (./include/linux/skbuff.h:2718)
[   32.141785][ T2471]  ? netlink_deliver_tap (./include/linux/rcupdate.h:319 (discriminator 2) ./include/linux/rcupdate.h:880 (discriminator 2) ./include/net/netns/generic.h:48 (discriminator 2) net/netlink/af_netlink.c:334 (discriminator 2))
[   32.141788][ T2471]  ? netlink_deliver_tap (./include/linux/rcupdate.h:319 (discriminator 2) ./include/linux/rcupdate.h:880 (discriminator 2) net/netlink/af_netlink.c:341 (discriminator 2))
[   32.141792][ T2471]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   32.141796][ T2471]  ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   32.141798][ T2471]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   32.141803][ T2471]  netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   32.141806][ T2471]  ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7))
[   32.141810][ T2471]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   32.141812][ T2471]  ? __import_iovec (lib/iov_iter.c:1358 lib/iov_iter.c:1373)
[   32.141817][ T2471]  __sock_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4))
[   32.141820][ T2471]  ____sys_sendmsg (net/socket.c:2713)
[   32.141822][ T2471]  ? copy_msghdr_from_user (net/socket.c:2650)
[   32.141824][ T2471]  ? sock_write_iter (net/socket.c:1269)
[   32.141826][ T2471]  ? move_addr_to_kernel (net/socket.c:258)
[   32.141833][ T2471]  ___sys_sendmsg (net/socket.c:2767)
[   32.141836][ T2471]  ? copy_msghdr_from_user (net/socket.c:2619)
[   32.141851][ T2471]  __sys_sendmsg (net/socket.c:2799)
[   32.141854][ T2471]  ? __sys_sendmsg_sock (net/socket.c:2780)
[   32.141860][ T2471]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   32.141863][ T2471]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   32.141866][ T2471]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   32.141869][ T2471]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   32.141871][ T2471] RIP: 0033:0x7f323b69554e
[   32.141873][ T2471] Code: 4d 89 d8 e8 b4 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 03 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 b4 bd 00 00       	call   0xbdbc
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 03 ff ff ff       	call   0xffffffffffffff3c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 03 ff ff ff       	call   0xffffffffffffff12
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[   32.141875][ T2471] RSP: 002b:00007ffd4f5fafd0 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
[   32.141877][ T2471] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f323b69554e
[   32.141882][ T2471] RDX: 0000000000000000 RSI: 00007ffd4f5fb080 RDI: 0000000000000005
[   32.141883][ T2471] RBP: 00007ffd4f5fafe0 R08: 0000000000000000 R09: 0000000000000000
[   32.141884][ T2471] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a911b7d
[   32.141885][ T2471] R13: 00000000004a1620 R14: 0000000000000000 R15: 00007ffd4f5fb740
| [   33.149119][ T2564] softirqs last disabled at (21406): br_device_event (./include/linux/spinlock.h:353 net/bridge/br.c:109)
| [   33.149121][ T2564] Preemption disabled at:
| [   33.149122][ T2564] 0x0
| [   33.149131][ T2564] Tainted: [W]=WARN
[   33.149132][ T2564] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   33.149134][ T2564] Call Trace:
[   33.149135][ T2564]  <TASK>
[   33.149137][ T2564]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   33.149143][ T2564]  __might_resched.cold (kernel/sched/core.c:9234)
[   33.149147][ T2564]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   33.149152][ T2564]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   33.149156][ T2564]  __kmalloc_noprof (./include/linux/sched/mm.h:322 (discriminator 2) mm/slub.c:4636 (discriminator 2) mm/slub.c:4974 (discriminator 2) mm/slub.c:5413 (discriminator 2) mm/slub.c:5439 (discriminator 2))
[   33.149158][ T2564]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   33.149164][ T2564]  ? do_raw_spin_unlock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:32 ./include/asm-generic/qspinlock.h:58 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141)
[   33.149167][ T2564]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   33.149170][ T2564]  put_chars (drivers/char/virtio_console.c:1176)
[   33.149173][ T2564]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   33.149179][ T2564]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   33.149186][ T2564]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   33.149190][ T2564]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   33.149194][ T2564]  console_emit_next_record (kernel/printk/printk.c:3183)
[   33.149198][ T2564]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   33.149200][ T2564]  ? console_flush_one_record (./include/linux/rcupdate.h:314 (discriminator 2) ./include/linux/srcu.h:439 (discriminator 2) kernel/printk/printk.c:291 (discriminator 2) kernel/printk/printk.c:3246 (discriminator 2))
[   33.149203][ T2564]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   33.149206][ T2564]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   33.149210][ T2564]  console_flush_one_record (kernel/printk/printk.c:3268)
[   33.149214][ T2564]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   33.149216][ T2564]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   33.149221][ T2564]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   33.149224][ T2564]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   33.149225][ T2564]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   33.149227][ T2564]  ? lock_acquire (./include/linux/srcutree.h:374 ./include/linux/srcu.h:541 ./include/linux/srcu.h:645 ./include/trace/events/lock.h:23 ./include/trace/events/lock.h:23 kernel/locking/lockdep.c:5871)
[   33.149231][ T2564]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   33.149232][ T2564]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   33.149235][ T2564]  vprintk_emit (kernel/printk/printk.c:2479)
[   33.149238][ T2564]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   33.149239][ T2564]  ? mark_held_locks (kernel/locking/lockdep.c:4341)
[   33.149242][ T2564]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   33.149244][ T2564]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   33.149248][ T2564]  _printk (kernel/printk/printk.c:2504)
[   33.149251][ T2564]  ? snapshot_read.cold (user.c:?)
[   33.149259][ T2564]  br_set_state (net/bridge/br_stp.c:57 (discriminator 2))
[   33.149263][ T2564]  br_stp_disable_port (net/bridge/br_stp_if.c:106)
[   33.149266][ T2564]  br_device_event (net/bridge/br.c:111)
[   33.149268][ T2564]  ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:211 (discriminator 1) kernel/locking/spinlock.c:221 (discriminator 1))
[   33.149272][ T2564]  ? packet_sendmsg_spkt (af_packet.c:?)
[   33.149278][ T2564]  notifier_call_chain (kernel/notifier.c:85)
[   33.149285][ T2564]  __dev_notify_flags (net/core/dev.c:2313 net/core/dev.c:2327 net/core/dev.c:9855)
[   33.149290][ T2564]  ? netif_change_name (net/core/dev.c:1517)
[   33.149294][ T2564]  ? netif_set_allmulti (./include/net/netdev_lock.h:33)
[   33.149297][ T2564]  ? __kernel_text_address (kernel/extable.c:79)
[   33.149300][ T2564]  ? write_profile (profile.c:?)
[   33.149304][ T2564]  netif_change_flags (net/core/dev.c:9882)
[   33.149308][ T2564]  do_setlink.isra.0 (net/core/rtnetlink.c:3266 (discriminator 1))
[   33.149311][ T2564]  ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1))
[   33.149313][ T2564]  ? rtnl_link_get_size (net/core/rtnetlink.c:747)
[   33.149315][ T2564]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380)
[   33.149317][ T2564]  ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2))
[   33.149320][ T2564]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   33.149322][ T2564]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   33.149323][ T2564]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   33.149326][ T2564]  ? kasan_save_stack (mm/kasan/common.c:58)
[   33.149328][ T2564]  ? kasan_save_stack (mm/kasan/common.c:57)
[   33.149329][ T2564]  ? kasan_save_track (mm/kasan/common.c:78)
[   33.149331][ T2564]  ? __kasan_kmalloc (mm/kasan/common.c:398 mm/kasan/common.c:415)
[   33.149333][ T2564]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   33.149335][ T2564]  ? snd_ac97_proc_read_main (sound/pci/ac97/ac97_proc.c:320)
[   33.149338][ T2564]  ? ___sys_sendmsg (net/socket.c:2758)
[   33.149341][ T2564]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   33.149343][ T2564]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   33.149346][ T2564]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   33.149348][ T2564]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   33.149349][ T2564]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   33.149350][ T2564]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   33.149352][ T2564]  ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22))
[   33.149354][ T2564]  ? __mutex_lock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:3188 kernel/locking/mutex.c:89 kernel/locking/mutex.c:134 kernel/locking/mutex.c:649 kernel/locking/mutex.c:821)
[   33.149355][ T2564]  ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1))
[   33.149357][ T2564]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   33.149361][ T2564]  ? ww_mutex_lock (kernel/locking/mutex.c:934)
[   33.149364][ T2564]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   33.149366][ T2564]  ? __rtnl_newlink (net/core/rtnetlink.c:4063)
[   33.149371][ T2564]  rtnl_newlink (net/core/rtnetlink.c:4215)
[   33.149377][ T2564]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   33.149378][ T2564]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   33.149383][ T2564]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   33.149385][ T2564]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   33.149387][ T2564]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   33.149389][ T2564]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   33.149393][ T2564]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   33.149394][ T2564]  rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   33.149398][ T2564]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   33.149399][ T2564]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   33.149403][ T2564]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   33.149405][ T2564]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   33.149409][ T2564]  netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   33.149411][ T2564]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   33.149414][ T2564]  ? netlink_ack (./include/linux/skbuff.h:2718)
[   33.149421][ T2564]  ? netlink_deliver_tap (./include/linux/rcupdate.h:319 (discriminator 2) ./include/linux/rcupdate.h:880 (discriminator 2) ./include/net/netns/generic.h:48 (discriminator 2) net/netlink/af_netlink.c:334 (discriminator 2))
[   33.149423][ T2564]  ? netlink_deliver_tap (./include/linux/rcupdate.h:319 (discriminator 2) ./include/linux/rcupdate.h:880 (discriminator 2) net/netlink/af_netlink.c:341 (discriminator 2))
[   33.149427][ T2564]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   33.149431][ T2564]  ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   33.149434][ T2564]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   33.149438][ T2564]  netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   33.149442][ T2564]  ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7))
[   33.149445][ T2564]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   33.149447][ T2564]  ? __import_iovec (lib/iov_iter.c:1358 lib/iov_iter.c:1373)
[   33.149452][ T2564]  __sock_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4))
[   33.149455][ T2564]  ____sys_sendmsg (net/socket.c:2713)
[   33.149457][ T2564]  ? copy_msghdr_from_user (net/socket.c:2650)
[   33.149460][ T2564]  ? sock_write_iter (net/socket.c:1269)
[   33.149461][ T2564]  ? move_addr_to_kernel (net/socket.c:258)
[   33.149468][ T2564]  ___sys_sendmsg (net/socket.c:2767)
[   33.149471][ T2564]  ? copy_msghdr_from_user (net/socket.c:2619)
[   33.149487][ T2564]  __sys_sendmsg (net/socket.c:2799)
[   33.149490][ T2564]  ? __sys_sendmsg_sock (net/socket.c:2780)
[   33.149496][ T2564]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   33.149499][ T2564]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   33.149502][ T2564]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   33.149504][ T2564]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   33.149507][ T2564] RIP: 0033:0x7f6f5d5d154e
[   33.149509][ T2564] Code: 4d 89 d8 e8 b4 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 03 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 b4 bd 00 00       	call   0xbdbc
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 03 ff ff ff       	call   0xffffffffffffff3c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 03 ff ff ff       	call   0xffffffffffffff12
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[   33.149510][ T2564] RSP: 002b:00007ffd163ceb60 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
[   33.149513][ T2564] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f6f5d5d154e
[   33.149514][ T2564] RDX: 0000000000000000 RSI: 00007ffd163cec10 RDI: 0000000000000005
[   33.149515][ T2564] RBP: 00007ffd163ceb70 R08: 0000000000000000 R09: 0000000000000000
[   33.149516][ T2564] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a911b7e
[   33.149516][ T2564] R13: 00000000004a1620 R14: 0000000000000000 R15: 00007ffd163cf2d0
| [   34.402524][ T2667] softirqs last disabled at (25657): __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767)
| [   34.402526][ T2667] Preemption disabled at:
| [   34.402527][ T2667] vprintk_emit (kernel/printk/printk.c:2471)
| [   34.402535][ T2667] Tainted: [W]=WARN
[   34.402536][ T2667] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   34.402538][ T2667] Call Trace:
[   34.402539][ T2667]  <TASK>
[   34.402541][ T2667]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   34.402546][ T2667]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   34.402548][ T2667]  __might_resched.cold (kernel/sched/core.c:9234)
[   34.402552][ T2667]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   34.402557][ T2667]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   34.402561][ T2667]  __kmalloc_noprof (./include/linux/sched/mm.h:322 (discriminator 2) mm/slub.c:4636 (discriminator 2) mm/slub.c:4974 (discriminator 2) mm/slub.c:5413 (discriminator 2) mm/slub.c:5439 (discriminator 2))
[   34.402563][ T2667]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   34.402569][ T2667]  ? do_raw_spin_unlock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:32 ./include/asm-generic/qspinlock.h:58 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141)
[   34.402572][ T2667]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   34.402575][ T2667]  put_chars (drivers/char/virtio_console.c:1176)
[   34.402578][ T2667]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   34.402581][ T2667]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   34.402586][ T2667]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   34.402593][ T2667]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   34.402596][ T2667]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   34.402599][ T2667]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   34.402602][ T2667]  console_emit_next_record (kernel/printk/printk.c:3183)
[   34.402606][ T2667]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   34.402608][ T2667]  ? console_flush_one_record (./include/linux/rcupdate.h:314 (discriminator 2) ./include/linux/srcu.h:439 (discriminator 2) kernel/printk/printk.c:291 (discriminator 2) kernel/printk/printk.c:3246 (discriminator 2))
[   34.402611][ T2667]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   34.402613][ T2667]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   34.402617][ T2667]  console_flush_one_record (kernel/printk/printk.c:3268)
[   34.402621][ T2667]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   34.402623][ T2667]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   34.402628][ T2667]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   34.402631][ T2667]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   34.402633][ T2667]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   34.402634][ T2667]  ? lock_acquire (./include/linux/srcutree.h:374 ./include/linux/srcu.h:541 ./include/linux/srcu.h:645 ./include/trace/events/lock.h:23 ./include/trace/events/lock.h:23 kernel/locking/lockdep.c:5871)
[   34.402638][ T2667]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   34.402640][ T2667]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   34.402642][ T2667]  vprintk_emit (kernel/printk/printk.c:2479)
[   34.402645][ T2667]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   34.402647][ T2667]  ? rtnl_newlink (net/core/rtnetlink.c:4215)
[   34.402648][ T2667]  ? netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   34.402651][ T2667]  ? netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   34.402653][ T2667]  ? netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   34.402654][ T2667]  ? __sock_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4))
[   34.402657][ T2667]  ? ____sys_sendmsg (net/socket.c:2713)
[   34.402659][ T2667]  ? ___sys_sendmsg (net/socket.c:2767)
[   34.402662][ T2667]  _printk (kernel/printk/printk.c:2504)
[   34.402666][ T2667]  ? snapshot_read.cold (user.c:?)
[   34.402670][ T2667]  ? netdev_name (./include/linux/netdevice.h:5709 (discriminator 1))
[   34.402673][ T2667]  ? __netdev_printk (net/core/dev.c:13148 (discriminator 2))
[   34.402677][ T2667]  netdev_info (net/core/dev.c:13195 (discriminator 3))
[   34.402680][ T2667]  ? netdev_notice (net/core/dev.c:13194)
[   34.402684][ T2667]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   34.402686][ T2667]  ? __up_read (kernel/locking/rwsem.c:1397 (discriminator 1))
[   34.402688][ T2667]  ? down_write_nested (kernel/locking/rwsem.c:1759)
[   34.402690][ T2667]  ? mutex_is_locked (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:3188 kernel/locking/mutex.h:48 kernel/locking/mutex.c:65)
[   34.402693][ T2667]  netif_set_allmulti.cold (net/core/dev.c:9731 (discriminator 3))
[   34.402697][ T2667]  dev_set_allmulti (net/core/dev_api.c:315)
[   34.402700][ T2667]  del_nbp (net/bridge/br_if.c:253 net/bridge/br_if.c:341)
[   34.402706][ T2667]  br_del_if (net/bridge/br_if.c:732)
[   34.402708][ T2667]  ? rtnl_is_locked (net/core/rtnetlink.c:169)
[   34.402711][ T2667]  do_set_master (net/core/rtnetlink.c:3055)
[   34.402714][ T2667]  do_setlink.isra.0 (net/core/rtnetlink.c:3273 (discriminator 1))
[   34.402718][ T2667]  ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1))
[   34.402721][ T2667]  ? rtnl_link_get_size (net/core/rtnetlink.c:747)
[   34.402723][ T2667]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380)
[   34.402725][ T2667]  ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2))
[   34.402729][ T2667]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   34.402731][ T2667]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   34.402732][ T2667]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   34.402735][ T2667]  ? kasan_save_stack (mm/kasan/common.c:58)
[   34.402737][ T2667]  ? kasan_save_stack (mm/kasan/common.c:57)
[   34.402738][ T2667]  ? kasan_save_track (mm/kasan/common.c:78)
[   34.402739][ T2667]  ? __kasan_kmalloc (mm/kasan/common.c:398 mm/kasan/common.c:415)
[   34.402742][ T2667]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   34.402744][ T2667]  ? snd_ac97_proc_read_main (sound/pci/ac97/ac97_proc.c:320)
[   34.402746][ T2667]  ? ___sys_sendmsg (net/socket.c:2758)
[   34.402749][ T2667]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   34.402751][ T2667]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   34.402754][ T2667]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   34.402755][ T2667]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   34.402757][ T2667]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   34.402758][ T2667]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   34.402760][ T2667]  ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22))
[   34.402762][ T2667]  ? __mutex_lock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:3188 kernel/locking/mutex.c:89 kernel/locking/mutex.c:134 kernel/locking/mutex.c:649 kernel/locking/mutex.c:821)
[   34.402764][ T2667]  ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1))
[   34.402766][ T2667]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   34.402769][ T2667]  ? ww_mutex_lock (kernel/locking/mutex.c:934)
[   34.402771][ T2667]  ? nla_get_range_signed (lib/nlattr.c:270)
[   34.402775][ T2667]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   34.402777][ T2667]  ? __rtnl_newlink (net/core/rtnetlink.c:4063)
[   34.402782][ T2667]  rtnl_newlink (net/core/rtnetlink.c:4215)
[   34.402788][ T2667]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   34.402789][ T2667]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   34.402794][ T2667]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   34.402796][ T2667]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   34.402798][ T2667]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   34.402800][ T2667]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   34.402803][ T2667]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   34.402805][ T2667]  rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   34.402808][ T2667]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   34.402810][ T2667]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   34.402814][ T2667]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   34.402816][ T2667]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   34.402819][ T2667]  netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   34.402821][ T2667]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   34.402824][ T2667]  ? netlink_ack (./include/linux/skbuff.h:2718)
[   34.402830][ T2667]  ? netlink_deliver_tap (./include/linux/rcupdate.h:319 (discriminator 2) ./include/linux/rcupdate.h:880 (discriminator 2) ./include/net/netns/generic.h:48 (discriminator 2) net/netlink/af_netlink.c:334 (discriminator 2))
[   34.402832][ T2667]  ? netlink_deliver_tap (./include/linux/rcupdate.h:319 (discriminator 2) ./include/linux/rcupdate.h:880 (discriminator 2) net/netlink/af_netlink.c:341 (discriminator 2))
[   34.402836][ T2667]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   34.402840][ T2667]  ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   34.402843][ T2667]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   34.402847][ T2667]  netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   34.402851][ T2667]  ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7))
[   34.402854][ T2667]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   34.402856][ T2667]  ? __import_iovec (lib/iov_iter.c:1358 lib/iov_iter.c:1373)
[   34.402861][ T2667]  __sock_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4))
[   34.402864][ T2667]  ____sys_sendmsg (net/socket.c:2713)
[   34.402866][ T2667]  ? copy_msghdr_from_user (net/socket.c:2650)
[   34.402868][ T2667]  ? sock_write_iter (net/socket.c:1269)
[   34.402870][ T2667]  ? move_addr_to_kernel (net/socket.c:258)
[   34.402877][ T2667]  ___sys_sendmsg (net/socket.c:2767)
[   34.402880][ T2667]  ? copy_msghdr_from_user (net/socket.c:2619)
[   34.402899][ T2667]  __sys_sendmsg (net/socket.c:2799)
[   34.402902][ T2667]  ? __sys_sendmsg_sock (net/socket.c:2780)
[   34.402908][ T2667]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   34.402911][ T2667]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   34.402914][ T2667]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   34.402916][ T2667]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   34.402919][ T2667] RIP: 0033:0x7f7ad92e654e
[   34.402922][ T2667] Code: 4d 89 d8 e8 b4 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 03 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 b4 bd 00 00       	call   0xbdbc
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 03 ff ff ff       	call   0xffffffffffffff3c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 03 ff ff ff       	call   0xffffffffffffff12
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[   34.402924][ T2667] RSP: 002b:00007ffe2d2786f0 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
[   34.402926][ T2667] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f7ad92e654e
[   34.402928][ T2667] RDX: 0000000000000000 RSI: 00007ffe2d2787a0 RDI: 0000000000000005
[   34.402929][ T2667] RBP: 00007ffe2d278700 R08: 0000000000000000 R09: 0000000000000000
[   34.402929][ T2667] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a911b7f


Finger prints:
br_device_event:dump_stack_lvl:__kmalloc_noprof:put_chars:hvc_console_print
br_port_carrier_check:dump_stack_lvl:__kmalloc_noprof:put_chars:hvc_console_print
__alloc_skb:vprintk_emit:dump_stack_lvl:__kmalloc_noprof:put_chars
__irq_exit_rcu:dump_stack_lvl:__kmalloc_noprof:put_chars:hvc_console_print
__irq_exit_rcu:vprintk_emit:dump_stack_lvl:__kmalloc_noprof:put_chars