======================================
| [    8.962278][  T202] softirqs last disabled at (30700): netlink_release (./include/net/sock.h:2138 net/netlink/af_netlink.c:727)
| [    8.962281][  T202] Preemption disabled at:
| [    8.962282][  T202] 0x0
| [    8.962291][  T202] Tainted: [W]=WARN
[    8.962292][  T202] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[    8.962294][  T202] Call Trace:
[    8.962295][  T202]  <TASK>
[    8.962297][  T202]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[    8.962303][  T202]  __might_resched.cold (kernel/sched/core.c:9234)
[    8.962308][  T202]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[    8.962312][  T202]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[    8.962316][  T202]  __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))
[    8.962318][  T202]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[    8.962324][  T202]  ? 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)
[    8.962327][  T202]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[    8.962331][  T202]  put_chars (drivers/char/virtio_console.c:1176)
[    8.962333][  T202]  ? __send_to_port (drivers/char/virtio_console.c:654)
[    8.962334][  T202]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[    8.962338][  T202]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[    8.962343][  T202]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[    8.962351][  T202]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[    8.962353][  T202]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[    8.962355][  T202]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[    8.962359][  T202]  console_emit_next_record (kernel/printk/printk.c:3183)
[    8.962363][  T202]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[    8.962365][  T202]  ? 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))
[    8.962368][  T202]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[    8.962370][  T202]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[    8.962374][  T202]  console_flush_one_record (kernel/printk/printk.c:3268)
[    8.962378][  T202]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[    8.962380][  T202]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[    8.962385][  T202]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[    8.962388][  T202]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[    8.962389][  T202]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[    8.962391][  T202]  ? 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)
[    8.962395][  T202]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[    8.962397][  T202]  ? vprintk_emit (kernel/printk/printk.c:2478)
[    8.962399][  T202]  vprintk_emit (kernel/printk/printk.c:2479)
[    8.962402][  T202]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[    8.962405][  T202]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[    8.962409][  T202]  _printk (kernel/printk/printk.c:2504)
[    8.962412][  T202]  ? snapshot_read.cold (user.c:?)
[    8.962416][  T202]  ? 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)
[    8.962419][  T202]  ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[    8.962423][  T202]  ? 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)
[    8.962426][  T202]  do_exit.cold (kernel/exit.c:889 (discriminator 4) kernel/exit.c:1043 (discriminator 4))
[    8.962429][  T202]  ? exit_notify (kernel/exit.c:780)
[    8.962431][  T202]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[    8.962434][  T202]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[    8.962437][  T202]  do_group_exit (kernel/exit.c:1151)
[    8.962440][  T202]  __x64_sys_exit_group (kernel/exit.c:1162 kernel/exit.c:1160 kernel/exit.c:1160)
[    8.962442][  T202]  x64_sys_call (./arch/x86/include/generated/asm/syscalls_64.h:232)
[    8.962444][  T202]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[    8.962448][  T202]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[    8.962451][  T202]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[    8.962453][  T202] RIP: 0033:0x7f87985b81b8
[    8.962455][  T202] Code: Unable to access opcode bytes at 0x7f87985b818e.

Code starting with the faulting instruction
===========================================
[    8.962456][  T202] RSP: 002b:00007fff13f4eb48 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
[    8.962459][  T202] RAX: ffffffffffffffda RBX: 00007f87986e8f88 RCX: 00007f87985b81b8
[    8.962460][  T202] RDX: 00007f8798302fc8 RSI: fffffffffffffeb8 RDI: 0000000000000000
[    8.962461][  T202] RBP: 00007fff13f4eba0 R08: 0000000000000000 R09: 0000000000008010
[    8.962462][  T202] R10: 00007fff13f4e960 R11: 0000000000000246 R12: 0000000000000001
[    8.962463][  T202] R13: 0000000000000000 R14: 00007f87986e7680 R15: 00007f87986e8fa0
| [   10.713316][  T378] softirqs last disabled at (16774): br_device_event (./include/linux/spinlock.h:353 net/bridge/br.c:109)
| [   10.713318][  T378] Preemption disabled at:
| [   10.713319][  T378] 0x0
| [   10.713328][  T378] Tainted: [W]=WARN
[   10.713329][  T378] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   10.713331][  T378] Call Trace:
[   10.713333][  T378]  <TASK>
[   10.713334][  T378]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   10.713340][  T378]  __might_resched.cold (kernel/sched/core.c:9234)
[   10.713345][  T378]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   10.713349][  T378]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   10.713354][  T378]  __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))
[   10.713356][  T378]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   10.713362][  T378]  ? 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)
[   10.713365][  T378]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   10.713369][  T378]  put_chars (drivers/char/virtio_console.c:1176)
[   10.713371][  T378]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   10.713377][  T378]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   10.713384][  T378]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   10.713388][  T378]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   10.713392][  T378]  console_emit_next_record (kernel/printk/printk.c:3183)
[   10.713396][  T378]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   10.713400][  T378]  ? 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))
[   10.713403][  T378]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   10.713406][  T378]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   10.713410][  T378]  console_flush_one_record (kernel/printk/printk.c:3268)
[   10.713414][  T378]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   10.713416][  T378]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   10.713422][  T378]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   10.713425][  T378]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   10.713427][  T378]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   10.713428][  T378]  ? 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)
[   10.713432][  T378]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   10.713434][  T378]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   10.713437][  T378]  vprintk_emit (kernel/printk/printk.c:2479)
[   10.713440][  T378]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   10.713441][  T378]  ? mark_held_locks (kernel/locking/lockdep.c:4341)
[   10.713444][  T378]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   10.713446][  T378]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   10.713450][  T378]  _printk (kernel/printk/printk.c:2504)
[   10.713454][  T378]  ? snapshot_read.cold (user.c:?)
[   10.713461][  T378]  br_set_state (net/bridge/br_stp.c:57 (discriminator 2))
[   10.713466][  T378]  br_stp_disable_port (net/bridge/br_stp_if.c:106)
[   10.713470][  T378]  br_device_event (net/bridge/br.c:111)
[   10.713472][  T378]  ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:211 (discriminator 1) kernel/locking/spinlock.c:221 (discriminator 1))
[   10.713476][  T378]  ? packet_sendmsg_spkt (af_packet.c:?)
[   10.713481][  T378]  notifier_call_chain (kernel/notifier.c:85)
[   10.713487][  T378]  __dev_notify_flags (net/core/dev.c:2313 net/core/dev.c:2327 net/core/dev.c:9855)
[   10.713492][  T378]  ? netif_change_name (net/core/dev.c:1517)
[   10.713496][  T378]  ? netif_set_allmulti (./include/net/netdev_lock.h:33)
[   10.713499][  T378]  ? __kernel_text_address (kernel/extable.c:79)
[   10.713502][  T378]  ? write_profile (profile.c:?)
[   10.713507][  T378]  netif_change_flags (net/core/dev.c:9882)
[   10.713510][  T378]  do_setlink.isra.0 (net/core/rtnetlink.c:3266 (discriminator 1))
[   10.713514][  T378]  ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1))
[   10.713520][  T378]  ? rtnl_link_get_size (net/core/rtnetlink.c:747)
[   10.713521][  T378]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380)
[   10.713523][  T378]  ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2))
[   10.713527][  T378]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   10.713529][  T378]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   10.713531][  T378]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   10.713533][  T378]  ? kasan_save_stack (mm/kasan/common.c:58)
[   10.713535][  T378]  ? kasan_save_stack (mm/kasan/common.c:57)
[   10.713536][  T378]  ? kasan_save_track (mm/kasan/common.c:78)
[   10.713538][  T378]  ? __kasan_kmalloc (mm/kasan/common.c:398 mm/kasan/common.c:415)
[   10.713540][  T378]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   10.713542][  T378]  ? snd_ac97_proc_read_main (sound/pci/ac97/ac97_proc.c:320)
[   10.713545][  T378]  ? ___sys_sendmsg (net/socket.c:2758)
[   10.713549][  T378]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   10.713551][  T378]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   10.713553][  T378]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   10.713555][  T378]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   10.713557][  T378]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   10.713558][  T378]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   10.713559][  T378]  ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22))
[   10.713562][  T378]  ? __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)
[   10.713563][  T378]  ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1))
[   10.713565][  T378]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   10.713568][  T378]  ? ww_mutex_lock (kernel/locking/mutex.c:934)
[   10.713571][  T378]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   10.713574][  T378]  ? __rtnl_newlink (net/core/rtnetlink.c:4063)
[   10.713579][  T378]  rtnl_newlink (net/core/rtnetlink.c:4215)
[   10.713584][  T378]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   10.713586][  T378]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   10.713590][  T378]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   10.713592][  T378]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   10.713595][  T378]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   10.713596][  T378]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   10.713600][  T378]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   10.713602][  T378]  rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   10.713605][  T378]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   10.713606][  T378]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   10.713611][  T378]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   10.713613][  T378]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   10.713616][  T378]  netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   10.713619][  T378]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   10.713622][  T378]  ? netlink_ack (./include/linux/skbuff.h:2718)
[   10.713629][  T378]  ? 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))
[   10.713631][  T378]  ? 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))
[   10.713635][  T378]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   10.713639][  T378]  ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   10.713641][  T378]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   10.713646][  T378]  netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   10.713650][  T378]  ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7))
[   10.713653][  T378]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   10.713655][  T378]  ? __import_iovec (lib/iov_iter.c:1358 lib/iov_iter.c:1373)
[   10.713660][  T378]  __sock_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4))
[   10.713663][  T378]  ____sys_sendmsg (net/socket.c:2713)
[   10.713665][  T378]  ? copy_msghdr_from_user (net/socket.c:2650)
[   10.713668][  T378]  ? sock_write_iter (net/socket.c:1269)
[   10.713669][  T378]  ? move_addr_to_kernel (net/socket.c:258)
[   10.713676][  T378]  ___sys_sendmsg (net/socket.c:2767)
[   10.713679][  T378]  ? copy_msghdr_from_user (net/socket.c:2619)
[   10.713695][  T378]  __sys_sendmsg (net/socket.c:2799)
[   10.713698][  T378]  ? __sys_sendmsg_sock (net/socket.c:2780)
[   10.713704][  T378]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   10.713707][  T378]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   10.713710][  T378]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   10.713713][  T378]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   10.713715][  T378] RIP: 0033:0x7f160c0e754e
[   10.713717][  T378] 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
[   10.713719][  T378] RSP: 002b:00007ffe2fc4f110 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
[   10.713722][  T378] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f160c0e754e
[   10.713723][  T378] RDX: 0000000000000000 RSI: 00007ffe2fc4f1c0 RDI: 0000000000000005
[   10.713724][  T378] RBP: 00007ffe2fc4f120 R08: 0000000000000000 R09: 0000000000000000
[   10.713724][  T378] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a90f49a
[   10.713725][  T378] R13: 00000000004a1620 R14: 0000000000000000 R15: 00007ffe2fc4f880
| [   11.900970][  T517] softirqs last disabled at (22882): br_device_event (./include/linux/spinlock.h:353 net/bridge/br.c:119)
| [   11.900973][  T517] Preemption disabled at:
| [   11.900973][  T517] 0x0
| [   11.900983][  T517] Tainted: [W]=WARN
[   11.900984][  T517] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   11.900986][  T517] Call Trace:
[   11.900987][  T517]  <TASK>
[   11.900989][  T517]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   11.900995][  T517]  __might_resched.cold (kernel/sched/core.c:9234)
[   11.901000][  T517]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   11.901004][  T517]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   11.901009][  T517]  __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))
[   11.901010][  T517]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   11.901017][  T517]  ? 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)
[   11.901020][  T517]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   11.901023][  T517]  put_chars (drivers/char/virtio_console.c:1176)
[   11.901025][  T517]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   11.901027][  T517]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   11.901030][  T517]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   11.901036][  T517]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   11.901043][  T517]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   11.901046][  T517]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   11.901048][  T517]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   11.901052][  T517]  console_emit_next_record (kernel/printk/printk.c:3183)
[   11.901056][  T517]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   11.901058][  T517]  ? 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))
[   11.901061][  T517]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   11.901063][  T517]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   11.901066][  T517]  console_flush_one_record (kernel/printk/printk.c:3268)
[   11.901071][  T517]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   11.901072][  T517]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   11.901078][  T517]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   11.901081][  T517]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   11.901082][  T517]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   11.901084][  T517]  ? 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)
[   11.901088][  T517]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   11.901089][  T517]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   11.901092][  T517]  vprintk_emit (kernel/printk/printk.c:2479)
[   11.901095][  T517]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   11.901097][  T517]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   11.901099][  T517]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   11.901104][  T517]  _printk (kernel/printk/printk.c:2504)
[   11.901107][  T517]  ? snapshot_read.cold (user.c:?)
[   11.901112][  T517]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   11.901116][  T517]  br_set_state (net/bridge/br_stp.c:57 (discriminator 2))
[   11.901121][  T517]  br_init_port (net/bridge/br_stp_if.c:39)
[   11.901124][  T517]  br_stp_enable_port (net/bridge/br_stp_if.c:93)
[   11.901125][  T517]  br_device_event (net/bridge/br.c:120)
[   11.901128][  T517]  ? packet_sendmsg_spkt (af_packet.c:?)
[   11.901130][  T517]  ? nlmsg_notify (./include/net/netlink.h:1165 ./include/net/netlink.h:1184 net/netlink/af_netlink.c:2599)
[   11.901137][  T517]  notifier_call_chain (kernel/notifier.c:85)
[   11.901142][  T517]  __dev_notify_flags (net/core/dev.c:2313 net/core/dev.c:2327 net/core/dev.c:9853)
[   11.901147][  T517]  ? netif_change_name (net/core/dev.c:1517)
[   11.901151][  T517]  ? netif_set_allmulti (./include/net/netdev_lock.h:33)
[   11.901153][  T517]  ? kernel_text_address (kernel/extable.c:125 kernel/extable.c:94)
[   11.901156][  T517]  ? __kernel_text_address (kernel/extable.c:79)
[   11.901158][  T517]  ? write_profile (profile.c:?)
[   11.901163][  T517]  netif_change_flags (net/core/dev.c:9882)
[   11.901167][  T517]  do_setlink.isra.0 (net/core/rtnetlink.c:3266 (discriminator 1))
[   11.901170][  T517]  ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1))
[   11.901172][  T517]  ? rtnl_link_get_size (net/core/rtnetlink.c:747)
[   11.901173][  T517]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380)
[   11.901175][  T517]  ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2))
[   11.901179][  T517]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   11.901181][  T517]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   11.901182][  T517]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   11.901185][  T517]  ? kasan_save_stack (mm/kasan/common.c:58)
[   11.901187][  T517]  ? kasan_save_stack (mm/kasan/common.c:57)
[   11.901188][  T517]  ? kasan_save_track (mm/kasan/common.c:78)
[   11.901189][  T517]  ? __kasan_kmalloc (mm/kasan/common.c:398 mm/kasan/common.c:415)
[   11.901192][  T517]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   11.901194][  T517]  ? snd_ac97_proc_read_main (sound/pci/ac97/ac97_proc.c:320)
[   11.901196][  T517]  ? ___sys_sendmsg (net/socket.c:2758)
[   11.901200][  T517]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   11.901202][  T517]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   11.901205][  T517]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   11.901206][  T517]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   11.901208][  T517]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   11.901209][  T517]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   11.901210][  T517]  ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22))
[   11.901213][  T517]  ? __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)
[   11.901215][  T517]  ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1))
[   11.901217][  T517]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   11.901220][  T517]  ? ww_mutex_lock (kernel/locking/mutex.c:934)
[   11.901224][  T517]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   11.901226][  T517]  ? __rtnl_newlink (net/core/rtnetlink.c:4063)
[   11.901231][  T517]  rtnl_newlink (net/core/rtnetlink.c:4215)
[   11.901237][  T517]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   11.901239][  T517]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   11.901243][  T517]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   11.901245][  T517]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   11.901247][  T517]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   11.901249][  T517]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   11.901253][  T517]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   11.901255][  T517]  rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   11.901258][  T517]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   11.901259][  T517]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   11.901263][  T517]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   11.901265][  T517]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   11.901269][  T517]  netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   11.901271][  T517]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   11.901273][  T517]  ? netlink_ack (./include/linux/skbuff.h:2718)
[   11.901280][  T517]  ? 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))
[   11.901282][  T517]  ? 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))
[   11.901287][  T517]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   11.901291][  T517]  ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   11.901293][  T517]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   11.901297][  T517]  netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   11.901301][  T517]  ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7))
[   11.901305][  T517]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   11.901306][  T517]  ? __import_iovec (lib/iov_iter.c:1358 lib/iov_iter.c:1373)
[   11.901312][  T517]  __sock_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4))
[   11.901314][  T517]  ____sys_sendmsg (net/socket.c:2713)
[   11.901317][  T517]  ? copy_msghdr_from_user (net/socket.c:2650)
[   11.901319][  T517]  ? sock_write_iter (net/socket.c:1269)
[   11.901320][  T517]  ? move_addr_to_kernel (net/socket.c:258)
[   11.901328][  T517]  ___sys_sendmsg (net/socket.c:2767)
[   11.901330][  T517]  ? copy_msghdr_from_user (net/socket.c:2619)
[   11.901347][  T517]  __sys_sendmsg (net/socket.c:2799)
[   11.901349][  T517]  ? __sys_sendmsg_sock (net/socket.c:2780)
[   11.901355][  T517]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   11.901358][  T517]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   11.901362][  T517]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   11.901364][  T517]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   11.901367][  T517] RIP: 0033:0x7fb99164b54e
[   11.901369][  T517] 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
[   11.901371][  T517] RSP: 002b:00007ffebf631b30 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
[   11.901374][  T517] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007fb99164b54e
[   11.901375][  T517] RDX: 0000000000000000 RSI: 00007ffebf631be0 RDI: 0000000000000005
[   11.901376][  T517] RBP: 00007ffebf631b40 R08: 0000000000000000 R09: 0000000000000000
[   11.901377][  T517] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a90f49b
[   11.901377][  T517] R13: 00000000004a1620 R14: 0000000000000000 R15: 00007ffebf6322a0
| [   13.220621][  T640] softirqs last disabled at (29060): br_device_event (./include/linux/spinlock.h:353 net/bridge/br.c:109)
| [   13.220623][  T640] Preemption disabled at:
| [   13.220624][  T640] 0x0
| [   13.220633][  T640] Tainted: [W]=WARN
[   13.220634][  T640] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   13.220636][  T640] Call Trace:
[   13.220637][  T640]  <TASK>
[   13.220639][  T640]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   13.220645][  T640]  __might_resched.cold (kernel/sched/core.c:9234)
[   13.220650][  T640]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   13.220654][  T640]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   13.220658][  T640]  __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))
[   13.220660][  T640]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   13.220666][  T640]  ? 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)
[   13.220669][  T640]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   13.220673][  T640]  put_chars (drivers/char/virtio_console.c:1176)
[   13.220675][  T640]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   13.220681][  T640]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   13.220689][  T640]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   13.220692][  T640]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   13.220697][  T640]  console_emit_next_record (kernel/printk/printk.c:3183)
[   13.220700][  T640]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   13.220702][  T640]  ? 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))
[   13.220706][  T640]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   13.220708][  T640]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   13.220712][  T640]  console_flush_one_record (kernel/printk/printk.c:3268)
[   13.220716][  T640]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   13.220718][  T640]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   13.220723][  T640]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   13.220726][  T640]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   13.220728][  T640]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   13.220730][  T640]  ? 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)
[   13.220733][  T640]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   13.220735][  T640]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   13.220738][  T640]  vprintk_emit (kernel/printk/printk.c:2479)
[   13.220741][  T640]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   13.220742][  T640]  ? mark_held_locks (kernel/locking/lockdep.c:4341)
[   13.220745][  T640]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   13.220747][  T640]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   13.220751][  T640]  _printk (kernel/printk/printk.c:2504)
[   13.220755][  T640]  ? snapshot_read.cold (user.c:?)
[   13.220762][  T640]  br_set_state (net/bridge/br_stp.c:57 (discriminator 2))
[   13.220767][  T640]  br_stp_disable_port (net/bridge/br_stp_if.c:106)
[   13.220770][  T640]  br_device_event (net/bridge/br.c:111)
[   13.220772][  T640]  ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:211 (discriminator 1) kernel/locking/spinlock.c:221 (discriminator 1))
[   13.220776][  T640]  ? packet_sendmsg_spkt (af_packet.c:?)
[   13.220782][  T640]  notifier_call_chain (kernel/notifier.c:85)
[   13.220788][  T640]  __dev_notify_flags (net/core/dev.c:2313 net/core/dev.c:2327 net/core/dev.c:9855)
[   13.220793][  T640]  ? netif_change_name (net/core/dev.c:1517)
[   13.220796][  T640]  ? netif_set_allmulti (./include/net/netdev_lock.h:33)
[   13.220799][  T640]  ? __kernel_text_address (kernel/extable.c:79)
[   13.220802][  T640]  ? write_profile (profile.c:?)
[   13.220807][  T640]  netif_change_flags (net/core/dev.c:9882)
[   13.220811][  T640]  do_setlink.isra.0 (net/core/rtnetlink.c:3266 (discriminator 1))
[   13.220814][  T640]  ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1))
[   13.220816][  T640]  ? rtnl_link_get_size (net/core/rtnetlink.c:747)
[   13.220817][  T640]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380)
[   13.220819][  T640]  ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2))
[   13.220823][  T640]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   13.220825][  T640]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   13.220826][  T640]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   13.220829][  T640]  ? kasan_save_stack (mm/kasan/common.c:58)
[   13.220831][  T640]  ? kasan_save_stack (mm/kasan/common.c:57)
[   13.220832][  T640]  ? kasan_save_track (mm/kasan/common.c:78)
[   13.220834][  T640]  ? __kasan_kmalloc (mm/kasan/common.c:398 mm/kasan/common.c:415)
[   13.220836][  T640]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   13.220838][  T640]  ? snd_ac97_proc_read_main (sound/pci/ac97/ac97_proc.c:320)
[   13.220840][  T640]  ? ___sys_sendmsg (net/socket.c:2758)
[   13.220844][  T640]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   13.220846][  T640]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   13.220849][  T640]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   13.220850][  T640]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   13.220852][  T640]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   13.220853][  T640]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   13.220855][  T640]  ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22))
[   13.220857][  T640]  ? __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)
[   13.220858][  T640]  ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1))
[   13.220860][  T640]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   13.220863][  T640]  ? ww_mutex_lock (kernel/locking/mutex.c:934)
[   13.220867][  T640]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   13.220869][  T640]  ? __rtnl_newlink (net/core/rtnetlink.c:4063)
[   13.220874][  T640]  rtnl_newlink (net/core/rtnetlink.c:4215)
[   13.220879][  T640]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   13.220881][  T640]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   13.220886][  T640]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   13.220888][  T640]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   13.220890][  T640]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   13.220891][  T640]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   13.220895][  T640]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   13.220897][  T640]  rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   13.220900][  T640]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   13.220902][  T640]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   13.220906][  T640]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   13.220908][  T640]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   13.220911][  T640]  netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   13.220915][  T640]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   13.220917][  T640]  ? netlink_ack (./include/linux/skbuff.h:2718)
[   13.220924][  T640]  ? 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))
[   13.220926][  T640]  ? 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))
[   13.220930][  T640]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   13.220934][  T640]  ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   13.220937][  T640]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   13.220941][  T640]  netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   13.220945][  T640]  ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7))
[   13.220949][  T640]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   13.220950][  T640]  ? __import_iovec (lib/iov_iter.c:1358 lib/iov_iter.c:1373)
[   13.220955][  T640]  __sock_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4))
[   13.220958][  T640]  ____sys_sendmsg (net/socket.c:2713)
[   13.220960][  T640]  ? copy_msghdr_from_user (net/socket.c:2650)
[   13.220962][  T640]  ? sock_write_iter (net/socket.c:1269)
[   13.220964][  T640]  ? move_addr_to_kernel (net/socket.c:258)
[   13.220971][  T640]  ___sys_sendmsg (net/socket.c:2767)
[   13.220974][  T640]  ? copy_msghdr_from_user (net/socket.c:2619)
[   13.220990][  T640]  __sys_sendmsg (net/socket.c:2799)
[   13.220992][  T640]  ? __sys_sendmsg_sock (net/socket.c:2780)
[   13.220999][  T640]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   13.221002][  T640]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   13.221005][  T640]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   13.221008][  T640]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   13.221010][  T640] RIP: 0033:0x7f4d27f7a54e
[   13.221012][  T640] 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
[   13.221013][  T640] RSP: 002b:00007ffd4b673730 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
[   13.221016][  T640] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f4d27f7a54e
[   13.221017][  T640] RDX: 0000000000000000 RSI: 00007ffd4b6737e0 RDI: 0000000000000005
[   13.221018][  T640] RBP: 00007ffd4b673740 R08: 0000000000000000 R09: 0000000000000000
[   13.221019][  T640] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a90f49c
[   13.221020][  T640] R13: 00000000004a1620 R14: 0000000000000000 R15: 00007ffd4b673ea0
| [   14.383856][  T778] softirqs last disabled at (13916): br_device_event (./include/linux/spinlock.h:353 net/bridge/br.c:119)
| [   14.383858][  T778] Preemption disabled at:
| [   14.383858][  T778] 0x0
| [   14.383868][  T778] Tainted: [W]=WARN
[   14.383869][  T778] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   14.383871][  T778] Call Trace:
[   14.383872][  T778]  <TASK>
[   14.383874][  T778]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   14.383880][  T778]  __might_resched.cold (kernel/sched/core.c:9234)
[   14.383885][  T778]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   14.383889][  T778]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   14.383894][  T778]  __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))
[   14.383895][  T778]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   14.383902][  T778]  ? 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)
[   14.383904][  T778]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   14.383908][  T778]  put_chars (drivers/char/virtio_console.c:1176)
[   14.383910][  T778]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   14.383912][  T778]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   14.383915][  T778]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   14.383921][  T778]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   14.383928][  T778]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   14.383931][  T778]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   14.383933][  T778]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   14.383937][  T778]  console_emit_next_record (kernel/printk/printk.c:3183)
[   14.383941][  T778]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   14.383943][  T778]  ? 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))
[   14.383946][  T778]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   14.383948][  T778]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   14.383952][  T778]  console_flush_one_record (kernel/printk/printk.c:3268)
[   14.383956][  T778]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   14.383958][  T778]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   14.383963][  T778]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   14.383966][  T778]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   14.383968][  T778]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   14.383970][  T778]  ? 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)
[   14.383973][  T778]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   14.383975][  T778]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   14.383978][  T778]  vprintk_emit (kernel/printk/printk.c:2479)
[   14.383981][  T778]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   14.383983][  T778]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   14.383985][  T778]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   14.383989][  T778]  _printk (kernel/printk/printk.c:2504)
[   14.383993][  T778]  ? snapshot_read.cold (user.c:?)
[   14.383998][  T778]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   14.384002][  T778]  br_set_state (net/bridge/br_stp.c:57 (discriminator 2))
[   14.384007][  T778]  br_init_port (net/bridge/br_stp_if.c:39)
[   14.384009][  T778]  br_stp_enable_port (net/bridge/br_stp_if.c:93)
[   14.384011][  T778]  br_device_event (net/bridge/br.c:120)
[   14.384014][  T778]  ? packet_sendmsg_spkt (af_packet.c:?)
[   14.384015][  T778]  ? nlmsg_notify (./include/net/netlink.h:1165 ./include/net/netlink.h:1184 net/netlink/af_netlink.c:2599)
[   14.384022][  T778]  notifier_call_chain (kernel/notifier.c:85)
[   14.384028][  T778]  __dev_notify_flags (net/core/dev.c:2313 net/core/dev.c:2327 net/core/dev.c:9853)
[   14.384033][  T778]  ? netif_change_name (net/core/dev.c:1517)
[   14.384037][  T778]  ? netif_set_allmulti (./include/net/netdev_lock.h:33)
[   14.384039][  T778]  ? kernel_text_address (kernel/extable.c:125 kernel/extable.c:94)
[   14.384042][  T778]  ? __kernel_text_address (kernel/extable.c:79)
[   14.384043][  T778]  ? write_profile (profile.c:?)
[   14.384048][  T778]  netif_change_flags (net/core/dev.c:9882)
[   14.384052][  T778]  do_setlink.isra.0 (net/core/rtnetlink.c:3266 (discriminator 1))
[   14.384056][  T778]  ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1))
[   14.384058][  T778]  ? rtnl_link_get_size (net/core/rtnetlink.c:747)
[   14.384059][  T778]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380)
[   14.384061][  T778]  ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2))
[   14.384064][  T778]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   14.384066][  T778]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   14.384068][  T778]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   14.384070][  T778]  ? kasan_save_stack (mm/kasan/common.c:58)
[   14.384073][  T778]  ? kasan_save_stack (mm/kasan/common.c:57)
[   14.384074][  T778]  ? kasan_save_track (mm/kasan/common.c:78)
[   14.384075][  T778]  ? __kasan_kmalloc (mm/kasan/common.c:398 mm/kasan/common.c:415)
[   14.384077][  T778]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   14.384079][  T778]  ? snd_ac97_proc_read_main (sound/pci/ac97/ac97_proc.c:320)
[   14.384082][  T778]  ? ___sys_sendmsg (net/socket.c:2758)
[   14.384086][  T778]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   14.384088][  T778]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   14.384090][  T778]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   14.384092][  T778]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   14.384094][  T778]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   14.384095][  T778]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   14.384096][  T778]  ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22))
[   14.384099][  T778]  ? __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)
[   14.384101][  T778]  ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1))
[   14.384103][  T778]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   14.384106][  T778]  ? ww_mutex_lock (kernel/locking/mutex.c:934)
[   14.384110][  T778]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   14.384112][  T778]  ? __rtnl_newlink (net/core/rtnetlink.c:4063)
[   14.384117][  T778]  rtnl_newlink (net/core/rtnetlink.c:4215)
[   14.384123][  T778]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   14.384125][  T778]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   14.384129][  T778]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   14.384131][  T778]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   14.384133][  T778]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   14.384135][  T778]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   14.384139][  T778]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   14.384141][  T778]  rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   14.384144][  T778]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   14.384145][  T778]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   14.384150][  T778]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   14.384152][  T778]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   14.384155][  T778]  netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   14.384157][  T778]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   14.384160][  T778]  ? netlink_ack (./include/linux/skbuff.h:2718)
[   14.384166][  T778]  ? 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))
[   14.384169][  T778]  ? 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))
[   14.384173][  T778]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   14.384177][  T778]  ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   14.384179][  T778]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   14.384184][  T778]  netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   14.384188][  T778]  ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7))
[   14.384191][  T778]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   14.384193][  T778]  ? __import_iovec (lib/iov_iter.c:1358 lib/iov_iter.c:1373)
[   14.384198][  T778]  __sock_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4))
[   14.384201][  T778]  ____sys_sendmsg (net/socket.c:2713)
[   14.384203][  T778]  ? copy_msghdr_from_user (net/socket.c:2650)
[   14.384206][  T778]  ? sock_write_iter (net/socket.c:1269)
[   14.384207][  T778]  ? move_addr_to_kernel (net/socket.c:258)
[   14.384215][  T778]  ___sys_sendmsg (net/socket.c:2767)
[   14.384217][  T778]  ? copy_msghdr_from_user (net/socket.c:2619)
[   14.384233][  T778]  __sys_sendmsg (net/socket.c:2799)
[   14.384236][  T778]  ? __sys_sendmsg_sock (net/socket.c:2780)
[   14.384242][  T778]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   14.384245][  T778]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   14.384248][  T778]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   14.384251][  T778]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   14.384253][  T778] RIP: 0033:0x7fb60456254e
[   14.384255][  T778] 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
[   14.384257][  T778] RSP: 002b:00007ffe68ff4200 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
[   14.384260][  T778] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007fb60456254e
[   14.384261][  T778] RDX: 0000000000000000 RSI: 00007ffe68ff42b0 RDI: 0000000000000005
[   14.384262][  T778] RBP: 00007ffe68ff4210 R08: 0000000000000000 R09: 0000000000000000
[   14.384263][  T778] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a90f49d
[   14.384263][  T778] R13: 00000000004a1620 R14: 0000000000000000 R15: 00007ffe68ff4970
| [   16.098028][  T933] softirqs last disabled at (31834): br_device_event (./include/linux/spinlock.h:353 net/bridge/br.c:109)
| [   16.098030][  T933] Preemption disabled at:
| [   16.098031][  T933] 0x0
| [   16.098040][  T933] Tainted: [W]=WARN
[   16.098041][  T933] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   16.098043][  T933] Call Trace:
[   16.098045][  T933]  <TASK>
[   16.098046][  T933]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   16.098052][  T933]  __might_resched.cold (kernel/sched/core.c:9234)
[   16.098057][  T933]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   16.098061][  T933]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   16.098066][  T933]  __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))
[   16.098068][  T933]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   16.098074][  T933]  ? 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)
[   16.098076][  T933]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   16.098080][  T933]  put_chars (drivers/char/virtio_console.c:1176)
[   16.098082][  T933]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   16.098089][  T933]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   16.098096][  T933]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   16.098099][  T933]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   16.098103][  T933]  console_emit_next_record (kernel/printk/printk.c:3183)
[   16.098107][  T933]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   16.098109][  T933]  ? 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))
[   16.098112][  T933]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   16.098115][  T933]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   16.098119][  T933]  console_flush_one_record (kernel/printk/printk.c:3268)
[   16.098123][  T933]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   16.098125][  T933]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   16.098130][  T933]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   16.098133][  T933]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   16.098135][  T933]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   16.098137][  T933]  ? 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)
[   16.098141][  T933]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   16.098142][  T933]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   16.098145][  T933]  vprintk_emit (kernel/printk/printk.c:2479)
[   16.098148][  T933]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   16.098150][  T933]  ? mark_held_locks (kernel/locking/lockdep.c:4341)
[   16.098152][  T933]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   16.098154][  T933]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   16.098159][  T933]  _printk (kernel/printk/printk.c:2504)
[   16.098162][  T933]  ? snapshot_read.cold (user.c:?)
[   16.098170][  T933]  br_set_state (net/bridge/br_stp.c:57 (discriminator 2))
[   16.098174][  T933]  br_stp_disable_port (net/bridge/br_stp_if.c:106)
[   16.098178][  T933]  br_device_event (net/bridge/br.c:111)
[   16.098180][  T933]  ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:211 (discriminator 1) kernel/locking/spinlock.c:221 (discriminator 1))
[   16.098183][  T933]  ? packet_sendmsg_spkt (af_packet.c:?)
[   16.098189][  T933]  notifier_call_chain (kernel/notifier.c:85)
[   16.098195][  T933]  __dev_notify_flags (net/core/dev.c:2313 net/core/dev.c:2327 net/core/dev.c:9855)
[   16.098200][  T933]  ? netif_change_name (net/core/dev.c:1517)
[   16.098203][  T933]  ? netif_set_allmulti (./include/net/netdev_lock.h:33)
[   16.098206][  T933]  ? __kernel_text_address (kernel/extable.c:79)
[   16.098209][  T933]  ? write_profile (profile.c:?)
[   16.098214][  T933]  netif_change_flags (net/core/dev.c:9882)
[   16.098218][  T933]  do_setlink.isra.0 (net/core/rtnetlink.c:3266 (discriminator 1))
[   16.098221][  T933]  ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1))
[   16.098223][  T933]  ? rtnl_link_get_size (net/core/rtnetlink.c:747)
[   16.098224][  T933]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380)
[   16.098226][  T933]  ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2))
[   16.098230][  T933]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   16.098232][  T933]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   16.098234][  T933]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   16.098236][  T933]  ? kasan_save_stack (mm/kasan/common.c:58)
[   16.098238][  T933]  ? kasan_save_stack (mm/kasan/common.c:57)
[   16.098240][  T933]  ? kasan_save_track (mm/kasan/common.c:78)
[   16.098241][  T933]  ? __kasan_kmalloc (mm/kasan/common.c:398 mm/kasan/common.c:415)
[   16.098243][  T933]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   16.098245][  T933]  ? snd_ac97_proc_read_main (sound/pci/ac97/ac97_proc.c:320)
[   16.098248][  T933]  ? ___sys_sendmsg (net/socket.c:2758)
[   16.098251][  T933]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   16.098253][  T933]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   16.098256][  T933]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   16.098258][  T933]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   16.098259][  T933]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   16.098261][  T933]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   16.098262][  T933]  ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22))
[   16.098265][  T933]  ? __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)
[   16.098266][  T933]  ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1))
[   16.098268][  T933]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   16.098271][  T933]  ? ww_mutex_lock (kernel/locking/mutex.c:934)
[   16.098274][  T933]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   16.098277][  T933]  ? __rtnl_newlink (net/core/rtnetlink.c:4063)
[   16.098282][  T933]  rtnl_newlink (net/core/rtnetlink.c:4215)
[   16.098287][  T933]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   16.098289][  T933]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   16.098293][  T933]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   16.098295][  T933]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   16.098297][  T933]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   16.098299][  T933]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   16.098303][  T933]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   16.098305][  T933]  rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   16.098308][  T933]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   16.098309][  T933]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   16.098314][  T933]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   16.098316][  T933]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   16.098319][  T933]  netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   16.098322][  T933]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   16.098325][  T933]  ? netlink_ack (./include/linux/skbuff.h:2718)
[   16.098331][  T933]  ? 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))
[   16.098333][  T933]  ? 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))
[   16.098338][  T933]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   16.098342][  T933]  ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   16.098344][  T933]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   16.098348][  T933]  netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   16.098352][  T933]  ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7))
[   16.098356][  T933]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   16.098358][  T933]  ? __import_iovec (lib/iov_iter.c:1358 lib/iov_iter.c:1373)
[   16.098363][  T933]  __sock_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4))
[   16.098366][  T933]  ____sys_sendmsg (net/socket.c:2713)
[   16.098368][  T933]  ? copy_msghdr_from_user (net/socket.c:2650)
[   16.098371][  T933]  ? sock_write_iter (net/socket.c:1269)
[   16.098372][  T933]  ? move_addr_to_kernel (net/socket.c:258)
[   16.098379][  T933]  ___sys_sendmsg (net/socket.c:2767)
[   16.098382][  T933]  ? copy_msghdr_from_user (net/socket.c:2619)
[   16.098398][  T933]  __sys_sendmsg (net/socket.c:2799)
[   16.098400][  T933]  ? __sys_sendmsg_sock (net/socket.c:2780)
[   16.098407][  T933]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   16.098409][  T933]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   16.098413][  T933]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   16.098417][  T933]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   16.098419][  T933] RIP: 0033:0x7fb1a5bc554e
[   16.098422][  T933] 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
[   16.098423][  T933] RSP: 002b:00007ffcadb23bc0 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
[   16.098426][  T933] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007fb1a5bc554e
[   16.098427][  T933] RDX: 0000000000000000 RSI: 00007ffcadb23c70 RDI: 0000000000000005
[   16.098428][  T933] RBP: 00007ffcadb23bd0 R08: 0000000000000000 R09: 0000000000000000
[   16.098429][  T933] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a90f49f
[   16.098430][  T933] R13: 00000000004a1620 R14: 0000000000000000 R15: 00007ffcadb24330
| [   17.267887][  T417] softirqs last disabled at (115114): br_port_carrier_check (./include/linux/spinlock.h:353 net/bridge/br_if.c:87)
| [   17.267889][  T417] Preemption disabled at:
| [   17.267890][  T417] 0x0
| [   17.267900][  T417] Tainted: [W]=WARN
[   17.267902][  T417] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   17.267903][  T417] Workqueue: events_unbound linkwatch_event
[   17.267906][  T417] Call Trace:
[   17.267908][  T417]  <TASK>
[   17.267909][  T417]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   17.267916][  T417]  __might_resched.cold (kernel/sched/core.c:9234)
[   17.267921][  T417]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   17.267925][  T417]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   17.267929][  T417]  __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))
[   17.267931][  T417]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   17.267938][  T417]  ? 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)
[   17.267940][  T417]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   17.267944][  T417]  put_chars (drivers/char/virtio_console.c:1176)
[   17.267946][  T417]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   17.267949][  T417]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   17.267952][  T417]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   17.267955][  T417]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   17.267959][  T417]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   17.267963][  T417]  ? mark_usage (kernel/locking/lockdep.c:4690)
[   17.267965][  T417]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   17.267967][  T417]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   17.267971][  T417]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   17.267973][  T417]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   17.267978][  T417]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   17.267982][  T417]  console_emit_next_record (kernel/printk/printk.c:3183)
[   17.267986][  T417]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   17.267987][  T417]  ? 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))
[   17.267991][  T417]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   17.267993][  T417]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   17.267997][  T417]  console_flush_one_record (kernel/printk/printk.c:3268)
[   17.268001][  T417]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   17.268003][  T417]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   17.268008][  T417]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   17.268011][  T417]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   17.268013][  T417]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   17.268015][  T417]  ? 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)
[   17.268019][  T417]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   17.268020][  T417]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   17.268023][  T417]  vprintk_emit (kernel/printk/printk.c:2479)
[   17.268027][  T417]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   17.268029][  T417]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   17.268031][  T417]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   17.268034][  T417]  _printk (kernel/printk/printk.c:2504)
[   17.268038][  T417]  ? snapshot_read.cold (user.c:?)
[   17.268043][  T417]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   17.268047][  T417]  br_set_state (net/bridge/br_stp.c:57 (discriminator 2))
[   17.268052][  T417]  br_init_port (net/bridge/br_stp_if.c:39)
[   17.268054][  T417]  br_stp_enable_port (net/bridge/br_stp_if.c:93)
[   17.268056][  T417]  br_port_carrier_check (net/bridge/br_if.c:90)
[   17.268060][  T417]  br_device_event (net/bridge/br.c:101)
[   17.268063][  T417]  ? packet_sendmsg_spkt (af_packet.c:?)
[   17.268065][  T417]  ? nlmsg_notify (./include/net/netlink.h:1165 ./include/net/netlink.h:1184 net/netlink/af_netlink.c:2599)
[   17.268072][  T417]  notifier_call_chain (kernel/notifier.c:85)
[   17.268078][  T417]  netif_state_change (net/core/dev.c:1625)
[   17.268082][  T417]  ? call_netdevice_notifiers_info (./include/net/net_namespace.h:422 (discriminator 7))
[   17.268087][  T417]  ? linkwatch_do_dev (net/core/link_watch.c:182 net/core/link_watch.c:166)
[   17.268089][  T417]  __linkwatch_run_queue (net/core/link_watch.c:240)
[   17.268092][  T417]  ? linkwatch_do_dev (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   17.268095][  T417]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   17.268099][  T417]  linkwatch_event (net/core/link_watch.c:314 (discriminator 11))
[   17.268102][  T417]  ? __linkwatch_run_queue (net/core/link_watch.c:213)
[   17.268105][  T417]  process_one_work (kernel/workqueue.c:3387)
[   17.268112][  T417]  ? __queue_delayed_work (kernel/workqueue.c:2622)
[   17.268114][  T417]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   17.268122][  T417]  worker_thread (kernel/workqueue.c:3470 kernel/workqueue.c:3551)
[   17.268126][  T417]  ? rescuer_thread (./include/linux/list.h:419 (discriminator 3))
[   17.268128][  T417]  ? __kthread_parkme (./include/linux/instrumented.h:82 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 kernel/kthread.c:272)
[   17.268131][  T417]  ? rescuer_thread (./include/linux/list.h:419 (discriminator 3))
[   17.268134][  T417]  ? rescuer_thread (./include/linux/list.h:419 (discriminator 3))
[   17.268136][  T417]  kthread (kernel/kthread.c:436)
[   17.268138][  T417]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[   17.268142][  T417]  ? kthread_affine_preferred (kernel/kthread.c:857)
[   17.268145][  T417]  ret_from_fork (arch/x86/kernel/process.c:158)
[   17.268149][  T417]  ? arch_exit_to_user_mode_prepare.isra.0 (arch/x86/entry/vdso/vma.c:80 (discriminator 1))
[   17.268152][  T417]  ? __switch_to (arch/x86/kernel/process_64.c:403 arch/x86/kernel/process_64.c:663)
[   17.268156][  T417]  ? kthread_affine_preferred (kernel/kthread.c:857)
[   17.268159][  T417]  ret_from_fork_asm (arch/x86/entry/entry_64.S:245)
| [   18.644205][ T1196] softirqs last disabled at (24536): br_device_event (./include/linux/spinlock.h:353 net/bridge/br.c:109)
| [   18.644207][ T1196] Preemption disabled at:
| [   18.644208][ T1196] 0x0
| [   18.644217][ T1196] Tainted: [W]=WARN
[   18.644218][ T1196] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   18.644220][ T1196] Call Trace:
[   18.644222][ T1196]  <TASK>
[   18.644223][ T1196]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   18.644229][ T1196]  __might_resched.cold (kernel/sched/core.c:9234)
[   18.644234][ T1196]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   18.644238][ T1196]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   18.644242][ T1196]  __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))
[   18.644244][ T1196]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   18.644251][ T1196]  ? 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)
[   18.644254][ T1196]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   18.644257][ T1196]  put_chars (drivers/char/virtio_console.c:1176)
[   18.644260][ T1196]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   18.644266][ T1196]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   18.644273][ T1196]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   18.644276][ T1196]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   18.644281][ T1196]  console_emit_next_record (kernel/printk/printk.c:3183)
[   18.644285][ T1196]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   18.644287][ T1196]  ? 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))
[   18.644290][ T1196]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   18.644292][ T1196]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   18.644297][ T1196]  console_flush_one_record (kernel/printk/printk.c:3268)
[   18.644301][ T1196]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   18.644303][ T1196]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   18.644308][ T1196]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   18.644311][ T1196]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   18.644313][ T1196]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   18.644314][ T1196]  ? 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)
[   18.644318][ T1196]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   18.644320][ T1196]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   18.644323][ T1196]  vprintk_emit (kernel/printk/printk.c:2479)
[   18.644326][ T1196]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   18.644327][ T1196]  ? mark_held_locks (kernel/locking/lockdep.c:4341)
[   18.644330][ T1196]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   18.644332][ T1196]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   18.644336][ T1196]  _printk (kernel/printk/printk.c:2504)
[   18.644340][ T1196]  ? snapshot_read.cold (user.c:?)
[   18.644347][ T1196]  br_set_state (net/bridge/br_stp.c:57 (discriminator 2))
[   18.644352][ T1196]  br_stp_disable_port (net/bridge/br_stp_if.c:106)
[   18.644355][ T1196]  br_device_event (net/bridge/br.c:111)
[   18.644357][ T1196]  ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:211 (discriminator 1) kernel/locking/spinlock.c:221 (discriminator 1))
[   18.644361][ T1196]  ? packet_sendmsg_spkt (af_packet.c:?)
[   18.644367][ T1196]  notifier_call_chain (kernel/notifier.c:85)
[   18.644372][ T1196]  __dev_notify_flags (net/core/dev.c:2313 net/core/dev.c:2327 net/core/dev.c:9855)
[   18.644377][ T1196]  ? netif_change_name (net/core/dev.c:1517)
[   18.644381][ T1196]  ? netif_set_allmulti (./include/net/netdev_lock.h:33)
[   18.644384][ T1196]  ? __kernel_text_address (kernel/extable.c:79)
[   18.644387][ T1196]  ? write_profile (profile.c:?)
[   18.644391][ T1196]  netif_change_flags (net/core/dev.c:9882)
[   18.644395][ T1196]  do_setlink.isra.0 (net/core/rtnetlink.c:3266 (discriminator 1))
[   18.644399][ T1196]  ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1))
[   18.644401][ T1196]  ? rtnl_link_get_size (net/core/rtnetlink.c:747)
[   18.644402][ T1196]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380)
[   18.644404][ T1196]  ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2))
[   18.644407][ T1196]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   18.644409][ T1196]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   18.644411][ T1196]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   18.644415][ T1196]  ? kasan_save_stack (mm/kasan/common.c:58)
[   18.644418][ T1196]  ? kasan_save_stack (mm/kasan/common.c:57)
[   18.644419][ T1196]  ? kasan_save_track (mm/kasan/common.c:78)
[   18.644420][ T1196]  ? __kasan_kmalloc (mm/kasan/common.c:398 mm/kasan/common.c:415)
[   18.644422][ T1196]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   18.644424][ T1196]  ? snd_ac97_proc_read_main (sound/pci/ac97/ac97_proc.c:320)
[   18.644427][ T1196]  ? ___sys_sendmsg (net/socket.c:2758)
[   18.644431][ T1196]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   18.644433][ T1196]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   18.644435][ T1196]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   18.644437][ T1196]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   18.644439][ T1196]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   18.644440][ T1196]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   18.644442][ T1196]  ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22))
[   18.644444][ T1196]  ? __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)
[   18.644445][ T1196]  ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1))
[   18.644447][ T1196]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   18.644450][ T1196]  ? ww_mutex_lock (kernel/locking/mutex.c:934)
[   18.644454][ T1196]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   18.644456][ T1196]  ? __rtnl_newlink (net/core/rtnetlink.c:4063)
[   18.644461][ T1196]  rtnl_newlink (net/core/rtnetlink.c:4215)
[   18.644467][ T1196]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   18.644469][ T1196]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   18.644473][ T1196]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   18.644475][ T1196]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   18.644477][ T1196]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   18.644479][ T1196]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   18.644483][ T1196]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   18.644485][ T1196]  rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   18.644488][ T1196]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   18.644489][ T1196]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   18.644494][ T1196]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   18.644496][ T1196]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   18.644499][ T1196]  netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   18.644502][ T1196]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   18.644505][ T1196]  ? netlink_ack (./include/linux/skbuff.h:2718)
[   18.644511][ T1196]  ? 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))
[   18.644513][ T1196]  ? 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))
[   18.644518][ T1196]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   18.644521][ T1196]  ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   18.644524][ T1196]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   18.644528][ T1196]  netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   18.644532][ T1196]  ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7))
[   18.644536][ T1196]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   18.644538][ T1196]  ? __import_iovec (lib/iov_iter.c:1358 lib/iov_iter.c:1373)
[   18.644543][ T1196]  __sock_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4))
[   18.644545][ T1196]  ____sys_sendmsg (net/socket.c:2713)
[   18.644548][ T1196]  ? copy_msghdr_from_user (net/socket.c:2650)
[   18.644550][ T1196]  ? sock_write_iter (net/socket.c:1269)
[   18.644551][ T1196]  ? move_addr_to_kernel (net/socket.c:258)
[   18.644559][ T1196]  ___sys_sendmsg (net/socket.c:2767)
[   18.644561][ T1196]  ? copy_msghdr_from_user (net/socket.c:2619)
[   18.644581][ T1196]  __sys_sendmsg (net/socket.c:2799)
[   18.644584][ T1196]  ? __sys_sendmsg_sock (net/socket.c:2780)
[   18.644590][ T1196]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   18.644593][ T1196]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   18.644596][ T1196]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   18.644599][ T1196]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   18.644601][ T1196] RIP: 0033:0x7fb111af554e
[   18.644604][ T1196] 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
[   18.644605][ T1196] RSP: 002b:00007ffdf76b4810 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
[   18.644608][ T1196] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007fb111af554e
[   18.644609][ T1196] RDX: 0000000000000000 RSI: 00007ffdf76b48c0 RDI: 0000000000000005
[   18.644610][ T1196] RBP: 00007ffdf76b4820 R08: 0000000000000000 R09: 0000000000000000
[   18.644611][ T1196] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a90f4a2
[   18.644612][ T1196] R13: 00000000004a1620 R14: 0000000000000000 R15: 00007ffdf76b4f80
| [   19.832468][ T1334] softirqs last disabled at (12102): br_device_event (./include/linux/spinlock.h:353 net/bridge/br.c:119)
| [   19.832470][ T1334] Preemption disabled at:
| [   19.832471][ T1334] 0x0
| [   19.832481][ T1334] Tainted: [W]=WARN
[   19.832482][ T1334] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   19.832483][ T1334] Call Trace:
[   19.832485][ T1334]  <TASK>
[   19.832486][ T1334]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   19.832492][ T1334]  __might_resched.cold (kernel/sched/core.c:9234)
[   19.832497][ T1334]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   19.832502][ T1334]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   19.832506][ T1334]  __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))
[   19.832508][ T1334]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   19.832514][ T1334]  ? 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)
[   19.832517][ T1334]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   19.832521][ T1334]  put_chars (drivers/char/virtio_console.c:1176)
[   19.832523][ T1334]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   19.832525][ T1334]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   19.832528][ T1334]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   19.832534][ T1334]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   19.832541][ T1334]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   19.832544][ T1334]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   19.832546][ T1334]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   19.832550][ T1334]  console_emit_next_record (kernel/printk/printk.c:3183)
[   19.832553][ T1334]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   19.832555][ T1334]  ? 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))
[   19.832558][ T1334]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   19.832560][ T1334]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   19.832564][ T1334]  console_flush_one_record (kernel/printk/printk.c:3268)
[   19.832568][ T1334]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   19.832570][ T1334]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   19.832582][ T1334]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   19.832586][ T1334]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   19.832588][ T1334]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   19.832591][ T1334]  ? 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)
[   19.832597][ T1334]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   19.832599][ T1334]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   19.832602][ T1334]  vprintk_emit (kernel/printk/printk.c:2479)
[   19.832605][ T1334]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   19.832607][ T1334]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   19.832609][ T1334]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   19.832613][ T1334]  _printk (kernel/printk/printk.c:2504)
[   19.832617][ T1334]  ? snapshot_read.cold (user.c:?)
[   19.832622][ T1334]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   19.832626][ T1334]  br_set_state (net/bridge/br_stp.c:57 (discriminator 2))
[   19.832630][ T1334]  br_init_port (net/bridge/br_stp_if.c:39)
[   19.832633][ T1334]  br_stp_enable_port (net/bridge/br_stp_if.c:93)
[   19.832634][ T1334]  br_device_event (net/bridge/br.c:120)
[   19.832638][ T1334]  ? packet_sendmsg_spkt (af_packet.c:?)
[   19.832639][ T1334]  ? nlmsg_notify (./include/net/netlink.h:1165 ./include/net/netlink.h:1184 net/netlink/af_netlink.c:2599)
[   19.832646][ T1334]  notifier_call_chain (kernel/notifier.c:85)
[   19.832651][ T1334]  __dev_notify_flags (net/core/dev.c:2313 net/core/dev.c:2327 net/core/dev.c:9853)
[   19.832656][ T1334]  ? netif_change_name (net/core/dev.c:1517)
[   19.832660][ T1334]  ? netif_set_allmulti (./include/net/netdev_lock.h:33)
[   19.832662][ T1334]  ? kernel_text_address (kernel/extable.c:125 kernel/extable.c:94)
[   19.832665][ T1334]  ? __kernel_text_address (kernel/extable.c:79)
[   19.832667][ T1334]  ? write_profile (profile.c:?)
[   19.832672][ T1334]  netif_change_flags (net/core/dev.c:9882)
[   19.832675][ T1334]  do_setlink.isra.0 (net/core/rtnetlink.c:3266 (discriminator 1))
[   19.832679][ T1334]  ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1))
[   19.832681][ T1334]  ? rtnl_link_get_size (net/core/rtnetlink.c:747)
[   19.832682][ T1334]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380)
[   19.832684][ T1334]  ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2))
[   19.832688][ T1334]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   19.832690][ T1334]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   19.832691][ T1334]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   19.832694][ T1334]  ? kasan_save_stack (mm/kasan/common.c:58)
[   19.832696][ T1334]  ? kasan_save_stack (mm/kasan/common.c:57)
[   19.832697][ T1334]  ? kasan_save_track (mm/kasan/common.c:78)
[   19.832698][ T1334]  ? __kasan_kmalloc (mm/kasan/common.c:398 mm/kasan/common.c:415)
[   19.832700][ T1334]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   19.832702][ T1334]  ? snd_ac97_proc_read_main (sound/pci/ac97/ac97_proc.c:320)
[   19.832705][ T1334]  ? ___sys_sendmsg (net/socket.c:2758)
[   19.832709][ T1334]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   19.832711][ T1334]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   19.832713][ T1334]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   19.832715][ T1334]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   19.832717][ T1334]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   19.832718][ T1334]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   19.832719][ T1334]  ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22))
[   19.832722][ T1334]  ? __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)
[   19.832725][ T1334]  ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1))
[   19.832726][ T1334]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   19.832730][ T1334]  ? ww_mutex_lock (kernel/locking/mutex.c:934)
[   19.832733][ T1334]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   19.832735][ T1334]  ? __rtnl_newlink (net/core/rtnetlink.c:4063)
[   19.832741][ T1334]  rtnl_newlink (net/core/rtnetlink.c:4215)
[   19.832746][ T1334]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   19.832748][ T1334]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   19.832752][ T1334]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   19.832754][ T1334]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   19.832756][ T1334]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   19.832758][ T1334]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   19.832762][ T1334]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   19.832764][ T1334]  rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   19.832767][ T1334]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   19.832768][ T1334]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   19.832773][ T1334]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   19.832774][ T1334]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   19.832778][ T1334]  netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   19.832780][ T1334]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   19.832783][ T1334]  ? netlink_ack (./include/linux/skbuff.h:2718)
[   19.832789][ T1334]  ? 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))
[   19.832791][ T1334]  ? 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))
[   19.832796][ T1334]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   19.832799][ T1334]  ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   19.832802][ T1334]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   19.832806][ T1334]  netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   19.832810][ T1334]  ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7))
[   19.832814][ T1334]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   19.832815][ T1334]  ? __import_iovec (lib/iov_iter.c:1358 lib/iov_iter.c:1373)
[   19.832821][ T1334]  __sock_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4))
[   19.832823][ T1334]  ____sys_sendmsg (net/socket.c:2713)
[   19.832826][ T1334]  ? copy_msghdr_from_user (net/socket.c:2650)
[   19.832828][ T1334]  ? sock_write_iter (net/socket.c:1269)
[   19.832829][ T1334]  ? move_addr_to_kernel (net/socket.c:258)
[   19.832837][ T1334]  ___sys_sendmsg (net/socket.c:2767)
[   19.832840][ T1334]  ? copy_msghdr_from_user (net/socket.c:2619)
[   19.832855][ T1334]  __sys_sendmsg (net/socket.c:2799)
[   19.832858][ T1334]  ? __sys_sendmsg_sock (net/socket.c:2780)
[   19.832864][ T1334]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   19.832867][ T1334]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   19.832870][ T1334]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   19.832873][ T1334]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   19.832875][ T1334] RIP: 0033:0x7ffaea75654e
[   19.832878][ T1334] 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
[   19.832879][ T1334] RSP: 002b:00007fff9d9aea80 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
[   19.832882][ T1334] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007ffaea75654e
[   19.832883][ T1334] RDX: 0000000000000000 RSI: 00007fff9d9aeb30 RDI: 0000000000000005
[   19.832884][ T1334] RBP: 00007fff9d9aea90 R08: 0000000000000000 R09: 0000000000000000
[   19.832885][ T1334] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a90f4a3
[   19.832886][ T1334] R13: 00000000004a1620 R14: 0000000000000000 R15: 00007fff9d9af1f0
| [   21.388212][  T417] softirqs last disabled at (193248): br_port_carrier_check (./include/linux/spinlock.h:353 net/bridge/br_if.c:87)
| [   21.388215][  T417] Preemption disabled at:
| [   21.388216][  T417] 0x0
| [   21.388226][  T417] Tainted: [W]=WARN
[   21.388227][  T417] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   21.388228][  T417] Workqueue: events_unbound linkwatch_event
[   21.388232][  T417] Call Trace:
[   21.388233][  T417]  <TASK>
[   21.388235][  T417]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   21.388241][  T417]  __might_resched.cold (kernel/sched/core.c:9234)
[   21.388246][  T417]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   21.388250][  T417]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   21.388254][  T417]  __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))
[   21.388256][  T417]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   21.388263][  T417]  ? 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)
[   21.388265][  T417]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   21.388269][  T417]  put_chars (drivers/char/virtio_console.c:1176)
[   21.388272][  T417]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   21.388274][  T417]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   21.388277][  T417]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   21.388280][  T417]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   21.388285][  T417]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   21.388288][  T417]  ? mark_usage (kernel/locking/lockdep.c:4690)
[   21.388290][  T417]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   21.388292][  T417]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   21.388296][  T417]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   21.388298][  T417]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   21.388303][  T417]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   21.388307][  T417]  console_emit_next_record (kernel/printk/printk.c:3183)
[   21.388311][  T417]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   21.388313][  T417]  ? 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))
[   21.388316][  T417]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   21.388318][  T417]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   21.388322][  T417]  console_flush_one_record (kernel/printk/printk.c:3268)
[   21.388326][  T417]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   21.388328][  T417]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   21.388333][  T417]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   21.388336][  T417]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   21.388338][  T417]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   21.388340][  T417]  ? 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)
[   21.388344][  T417]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   21.388346][  T417]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   21.388349][  T417]  vprintk_emit (kernel/printk/printk.c:2479)
[   21.388352][  T417]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   21.388354][  T417]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   21.388356][  T417]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   21.388360][  T417]  _printk (kernel/printk/printk.c:2504)
[   21.388363][  T417]  ? snapshot_read.cold (user.c:?)
[   21.388368][  T417]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   21.388372][  T417]  br_set_state (net/bridge/br_stp.c:57 (discriminator 2))
[   21.388376][  T417]  br_init_port (net/bridge/br_stp_if.c:39)
[   21.388379][  T417]  br_stp_enable_port (net/bridge/br_stp_if.c:93)
[   21.388381][  T417]  br_port_carrier_check (net/bridge/br_if.c:90)
[   21.388385][  T417]  br_device_event (net/bridge/br.c:101)
[   21.388388][  T417]  ? packet_sendmsg_spkt (af_packet.c:?)
[   21.388389][  T417]  ? nlmsg_notify (./include/net/netlink.h:1165 ./include/net/netlink.h:1184 net/netlink/af_netlink.c:2599)
[   21.388396][  T417]  notifier_call_chain (kernel/notifier.c:85)
[   21.388402][  T417]  netif_state_change (net/core/dev.c:1625)
[   21.388407][  T417]  ? call_netdevice_notifiers_info (./include/net/net_namespace.h:422 (discriminator 7))
[   21.388412][  T417]  ? linkwatch_do_dev (net/core/link_watch.c:182 net/core/link_watch.c:166)
[   21.388416][  T417]  __linkwatch_run_queue (net/core/link_watch.c:240)
[   21.388419][  T417]  ? linkwatch_do_dev (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   21.388422][  T417]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   21.388426][  T417]  linkwatch_event (net/core/link_watch.c:314 (discriminator 11))
[   21.388429][  T417]  ? __linkwatch_run_queue (net/core/link_watch.c:213)
[   21.388432][  T417]  process_one_work (kernel/workqueue.c:3387)
[   21.388439][  T417]  ? __queue_delayed_work (kernel/workqueue.c:2622)
[   21.388442][  T417]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   21.388450][  T417]  worker_thread (kernel/workqueue.c:3470 kernel/workqueue.c:3551)
[   21.388454][  T417]  ? rescuer_thread (./include/linux/list.h:419 (discriminator 3))
[   21.388456][  T417]  ? __kthread_parkme (./include/linux/instrumented.h:82 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 kernel/kthread.c:272)
[   21.388459][  T417]  ? rescuer_thread (./include/linux/list.h:419 (discriminator 3))
[   21.388462][  T417]  ? rescuer_thread (./include/linux/list.h:419 (discriminator 3))
[   21.388464][  T417]  kthread (kernel/kthread.c:436)
[   21.388465][  T417]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[   21.388469][  T417]  ? kthread_affine_preferred (kernel/kthread.c:857)
[   21.388472][  T417]  ret_from_fork (arch/x86/kernel/process.c:158)
[   21.388477][  T417]  ? arch_exit_to_user_mode_prepare.isra.0 (arch/x86/entry/vdso/vma.c:80 (discriminator 1))
[   21.388480][  T417]  ? __switch_to (arch/x86/kernel/process_64.c:403 arch/x86/kernel/process_64.c:663)
[   21.388484][  T417]  ? kthread_affine_preferred (kernel/kthread.c:857)
[   21.388486][  T417]  ret_from_fork_asm (arch/x86/entry/entry_64.S:245)
| [   22.530075][ T1602] softirqs last disabled at (16232): br_device_event (./include/linux/spinlock.h:353 net/bridge/br.c:119)
| [   22.530078][ T1602] Preemption disabled at:
| [   22.530079][ T1602] 0x0
| [   22.530089][ T1602] Tainted: [W]=WARN
[   22.530090][ T1602] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   22.530091][ T1602] Call Trace:
[   22.530093][ T1602]  <TASK>
[   22.530094][ T1602]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   22.530100][ T1602]  __might_resched.cold (kernel/sched/core.c:9234)
[   22.530105][ T1602]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   22.530109][ T1602]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   22.530114][ T1602]  __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))
[   22.530116][ T1602]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   22.530122][ T1602]  ? 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)
[   22.530124][ T1602]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   22.530128][ T1602]  put_chars (drivers/char/virtio_console.c:1176)
[   22.530130][ T1602]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   22.530132][ T1602]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   22.530135][ T1602]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   22.530141][ T1602]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   22.530148][ T1602]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   22.530150][ T1602]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   22.530152][ T1602]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   22.530157][ T1602]  console_emit_next_record (kernel/printk/printk.c:3183)
[   22.530160][ T1602]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   22.530162][ T1602]  ? 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))
[   22.530165][ T1602]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   22.530167][ T1602]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   22.530171][ T1602]  console_flush_one_record (kernel/printk/printk.c:3268)
[   22.530175][ T1602]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   22.530177][ T1602]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   22.530182][ T1602]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   22.530185][ T1602]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   22.530187][ T1602]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   22.530188][ T1602]  ? 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)
[   22.530192][ T1602]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   22.530194][ T1602]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   22.530196][ T1602]  vprintk_emit (kernel/printk/printk.c:2479)
[   22.530200][ T1602]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   22.530202][ T1602]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   22.530203][ T1602]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   22.530208][ T1602]  _printk (kernel/printk/printk.c:2504)
[   22.530212][ T1602]  ? snapshot_read.cold (user.c:?)
[   22.530217][ T1602]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   22.530220][ T1602]  br_set_state (net/bridge/br_stp.c:57 (discriminator 2))
[   22.530225][ T1602]  br_init_port (net/bridge/br_stp_if.c:39)
[   22.530227][ T1602]  br_stp_enable_port (net/bridge/br_stp_if.c:93)
[   22.530229][ T1602]  br_device_event (net/bridge/br.c:120)
[   22.530232][ T1602]  ? packet_sendmsg_spkt (af_packet.c:?)
[   22.530234][ T1602]  ? nlmsg_notify (./include/net/netlink.h:1165 ./include/net/netlink.h:1184 net/netlink/af_netlink.c:2599)
[   22.530240][ T1602]  notifier_call_chain (kernel/notifier.c:85)
[   22.530246][ T1602]  __dev_notify_flags (net/core/dev.c:2313 net/core/dev.c:2327 net/core/dev.c:9853)
[   22.530251][ T1602]  ? netif_change_name (net/core/dev.c:1517)
[   22.530254][ T1602]  ? netif_set_allmulti (./include/net/netdev_lock.h:33)
[   22.530257][ T1602]  ? kernel_text_address (kernel/extable.c:125 kernel/extable.c:94)
[   22.530260][ T1602]  ? __kernel_text_address (kernel/extable.c:79)
[   22.530261][ T1602]  ? write_profile (profile.c:?)
[   22.530266][ T1602]  netif_change_flags (net/core/dev.c:9882)
[   22.530270][ T1602]  do_setlink.isra.0 (net/core/rtnetlink.c:3266 (discriminator 1))
[   22.530273][ T1602]  ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1))
[   22.530275][ T1602]  ? rtnl_link_get_size (net/core/rtnetlink.c:747)
[   22.530276][ T1602]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380)
[   22.530278][ T1602]  ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2))
[   22.530282][ T1602]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   22.530284][ T1602]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   22.530285][ T1602]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   22.530288][ T1602]  ? kasan_save_stack (mm/kasan/common.c:58)
[   22.530290][ T1602]  ? kasan_save_stack (mm/kasan/common.c:57)
[   22.530291][ T1602]  ? kasan_save_track (mm/kasan/common.c:78)
[   22.530292][ T1602]  ? __kasan_kmalloc (mm/kasan/common.c:398 mm/kasan/common.c:415)
[   22.530295][ T1602]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   22.530296][ T1602]  ? snd_ac97_proc_read_main (sound/pci/ac97/ac97_proc.c:320)
[   22.530299][ T1602]  ? ___sys_sendmsg (net/socket.c:2758)
[   22.530303][ T1602]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   22.530305][ T1602]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   22.530307][ T1602]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   22.530309][ T1602]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   22.530311][ T1602]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   22.530312][ T1602]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   22.530313][ T1602]  ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22))
[   22.530316][ T1602]  ? __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)
[   22.530318][ T1602]  ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1))
[   22.530320][ T1602]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   22.530324][ T1602]  ? ww_mutex_lock (kernel/locking/mutex.c:934)
[   22.530327][ T1602]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   22.530329][ T1602]  ? __rtnl_newlink (net/core/rtnetlink.c:4063)
[   22.530335][ T1602]  rtnl_newlink (net/core/rtnetlink.c:4215)
[   22.530340][ T1602]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   22.530342][ T1602]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   22.530347][ T1602]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   22.530349][ T1602]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   22.530353][ T1602]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   22.530355][ T1602]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   22.530359][ T1602]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   22.530361][ T1602]  rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   22.530364][ T1602]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   22.530365][ T1602]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   22.530370][ T1602]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   22.530372][ T1602]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   22.530375][ T1602]  netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   22.530377][ T1602]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   22.530380][ T1602]  ? netlink_ack (./include/linux/skbuff.h:2718)
[   22.530386][ T1602]  ? 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))
[   22.530388][ T1602]  ? 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))
[   22.530392][ T1602]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   22.530396][ T1602]  ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   22.530399][ T1602]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   22.530403][ T1602]  netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   22.530407][ T1602]  ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7))
[   22.530411][ T1602]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   22.530412][ T1602]  ? __import_iovec (lib/iov_iter.c:1358 lib/iov_iter.c:1373)
[   22.530417][ T1602]  __sock_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4))
[   22.530420][ T1602]  ____sys_sendmsg (net/socket.c:2713)
[   22.530422][ T1602]  ? copy_msghdr_from_user (net/socket.c:2650)
[   22.530424][ T1602]  ? sock_write_iter (net/socket.c:1269)
[   22.530426][ T1602]  ? move_addr_to_kernel (net/socket.c:258)
[   22.530433][ T1602]  ___sys_sendmsg (net/socket.c:2767)
[   22.530436][ T1602]  ? copy_msghdr_from_user (net/socket.c:2619)
[   22.530452][ T1602]  __sys_sendmsg (net/socket.c:2799)
[   22.530455][ T1602]  ? __sys_sendmsg_sock (net/socket.c:2780)
[   22.530461][ T1602]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   22.530464][ T1602]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   22.530467][ T1602]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   22.530470][ T1602]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   22.530472][ T1602] RIP: 0033:0x7f3061ffe54e
[   22.530474][ T1602] 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
[   22.530476][ T1602] RSP: 002b:00007fffffa27900 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
[   22.530478][ T1602] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f3061ffe54e
[   22.530479][ T1602] RDX: 0000000000000000 RSI: 00007fffffa279b0 RDI: 0000000000000005
[   22.530480][ T1602] RBP: 00007fffffa27910 R08: 0000000000000000 R09: 0000000000000000
[   22.530481][ T1602] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a90f4a5
[   22.530482][ T1602] R13: 00000000004a1620 R14: 0000000000000000 R15: 00007fffffa28070
| [   23.556250][ T1712] softirqs last disabled at (23784): br_device_event (./include/linux/spinlock.h:353 net/bridge/br.c:109)
| [   23.556252][ T1712] Preemption disabled at:
| [   23.556253][ T1712] 0x0
| [   23.556263][ T1712] Tainted: [W]=WARN
[   23.556264][ T1712] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   23.556266][ T1712] Call Trace:
[   23.556267][ T1712]  <TASK>
[   23.556269][ T1712]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   23.556275][ T1712]  __might_resched.cold (kernel/sched/core.c:9234)
[   23.556280][ T1712]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   23.556284][ T1712]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   23.556288][ T1712]  __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))
[   23.556290][ T1712]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   23.556297][ T1712]  ? 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)
[   23.556299][ T1712]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   23.556303][ T1712]  put_chars (drivers/char/virtio_console.c:1176)
[   23.556305][ T1712]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   23.556311][ T1712]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   23.556318][ T1712]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   23.556322][ T1712]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   23.556326][ T1712]  console_emit_next_record (kernel/printk/printk.c:3183)
[   23.556330][ T1712]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   23.556332][ T1712]  ? 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))
[   23.556335][ T1712]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   23.556338][ T1712]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   23.556342][ T1712]  console_flush_one_record (kernel/printk/printk.c:3268)
[   23.556346][ T1712]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   23.556348][ T1712]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   23.556353][ T1712]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   23.556356][ T1712]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   23.556358][ T1712]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   23.556359][ T1712]  ? 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)
[   23.556363][ T1712]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   23.556365][ T1712]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   23.556368][ T1712]  vprintk_emit (kernel/printk/printk.c:2479)
[   23.556371][ T1712]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   23.556372][ T1712]  ? mark_held_locks (kernel/locking/lockdep.c:4341)
[   23.556374][ T1712]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   23.556377][ T1712]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   23.556381][ T1712]  _printk (kernel/printk/printk.c:2504)
[   23.556384][ T1712]  ? snapshot_read.cold (user.c:?)
[   23.556392][ T1712]  br_set_state (net/bridge/br_stp.c:57 (discriminator 2))
[   23.556396][ T1712]  br_stp_disable_port (net/bridge/br_stp_if.c:106)
[   23.556399][ T1712]  br_device_event (net/bridge/br.c:111)
[   23.556401][ T1712]  ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:211 (discriminator 1) kernel/locking/spinlock.c:221 (discriminator 1))
[   23.556405][ T1712]  ? packet_sendmsg_spkt (af_packet.c:?)
[   23.556411][ T1712]  notifier_call_chain (kernel/notifier.c:85)
[   23.556418][ T1712]  __dev_notify_flags (net/core/dev.c:2313 net/core/dev.c:2327 net/core/dev.c:9855)
[   23.556423][ T1712]  ? netif_change_name (net/core/dev.c:1517)
[   23.556427][ T1712]  ? netif_set_allmulti (./include/net/netdev_lock.h:33)
[   23.556430][ T1712]  ? __kernel_text_address (kernel/extable.c:79)
[   23.556433][ T1712]  ? write_profile (profile.c:?)
[   23.556437][ T1712]  netif_change_flags (net/core/dev.c:9882)
[   23.556441][ T1712]  do_setlink.isra.0 (net/core/rtnetlink.c:3266 (discriminator 1))
[   23.556445][ T1712]  ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1))
[   23.556447][ T1712]  ? rtnl_link_get_size (net/core/rtnetlink.c:747)
[   23.556448][ T1712]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380)
[   23.556450][ T1712]  ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2))
[   23.556453][ T1712]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   23.556455][ T1712]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   23.556457][ T1712]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   23.556459][ T1712]  ? kasan_save_stack (mm/kasan/common.c:58)
[   23.556462][ T1712]  ? kasan_save_stack (mm/kasan/common.c:57)
[   23.556463][ T1712]  ? kasan_save_track (mm/kasan/common.c:78)
[   23.556464][ T1712]  ? __kasan_kmalloc (mm/kasan/common.c:398 mm/kasan/common.c:415)
[   23.556466][ T1712]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   23.556468][ T1712]  ? snd_ac97_proc_read_main (sound/pci/ac97/ac97_proc.c:320)
[   23.556471][ T1712]  ? ___sys_sendmsg (net/socket.c:2758)
[   23.556475][ T1712]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   23.556477][ T1712]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   23.556479][ T1712]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   23.556481][ T1712]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   23.556482][ T1712]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   23.556483][ T1712]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   23.556485][ T1712]  ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22))
[   23.556487][ T1712]  ? __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)
[   23.556489][ T1712]  ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1))
[   23.556491][ T1712]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   23.556494][ T1712]  ? ww_mutex_lock (kernel/locking/mutex.c:934)
[   23.556497][ T1712]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   23.556500][ T1712]  ? __rtnl_newlink (net/core/rtnetlink.c:4063)
[   23.556505][ T1712]  rtnl_newlink (net/core/rtnetlink.c:4215)
[   23.556510][ T1712]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   23.556512][ T1712]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   23.556516][ T1712]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   23.556518][ T1712]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   23.556520][ T1712]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   23.556522][ T1712]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   23.556526][ T1712]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   23.556528][ T1712]  rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   23.556531][ T1712]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   23.556532][ T1712]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   23.556537][ T1712]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   23.556538][ T1712]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   23.556542][ T1712]  netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   23.556545][ T1712]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   23.556548][ T1712]  ? netlink_ack (./include/linux/skbuff.h:2718)
[   23.556554][ T1712]  ? 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))
[   23.556556][ T1712]  ? 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))
[   23.556561][ T1712]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   23.556564][ T1712]  ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   23.556567][ T1712]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   23.556571][ T1712]  netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   23.556575][ T1712]  ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7))
[   23.556579][ T1712]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   23.556581][ T1712]  ? __import_iovec (lib/iov_iter.c:1358 lib/iov_iter.c:1373)
[   23.556586][ T1712]  __sock_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4))
[   23.556588][ T1712]  ____sys_sendmsg (net/socket.c:2713)
[   23.556591][ T1712]  ? copy_msghdr_from_user (net/socket.c:2650)
[   23.556593][ T1712]  ? sock_write_iter (net/socket.c:1269)
[   23.556594][ T1712]  ? move_addr_to_kernel (net/socket.c:258)
[   23.556607][ T1712]  ___sys_sendmsg (net/socket.c:2767)
[   23.556610][ T1712]  ? copy_msghdr_from_user (net/socket.c:2619)
[   23.556626][ T1712]  __sys_sendmsg (net/socket.c:2799)
[   23.556628][ T1712]  ? __sys_sendmsg_sock (net/socket.c:2780)
[   23.556635][ T1712]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   23.556638][ T1712]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   23.556641][ T1712]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   23.556643][ T1712]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   23.556646][ T1712] RIP: 0033:0x7ff8224d154e
[   23.556648][ T1712] 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
[   23.556650][ T1712] RSP: 002b:00007ffc533843e0 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
[   23.556653][ T1712] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007ff8224d154e
[   23.556654][ T1712] RDX: 0000000000000000 RSI: 00007ffc53384490 RDI: 0000000000000005
[   23.556655][ T1712] RBP: 00007ffc533843f0 R08: 0000000000000000 R09: 0000000000000000
[   23.556656][ T1712] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a90f4a6
[   23.556657][ T1712] R13: 00000000004a1620 R14: 0000000000000000 R15: 00007ffc53384b50
| [   24.895972][ T1827] softirqs last disabled at (23610): br_device_event (./include/linux/spinlock.h:353 net/bridge/br.c:109)
| [   24.895974][ T1827] Preemption disabled at:
| [   24.895975][ T1827] 0x0
| [   24.895985][ T1827] Tainted: [W]=WARN
[   24.895986][ T1827] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   24.895988][ T1827] Call Trace:
[   24.895989][ T1827]  <TASK>
[   24.895990][ T1827]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   24.895997][ T1827]  __might_resched.cold (kernel/sched/core.c:9234)
[   24.896002][ T1827]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   24.896006][ T1827]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   24.896010][ T1827]  __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))
[   24.896012][ T1827]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   24.896019][ T1827]  ? 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)
[   24.896021][ T1827]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   24.896025][ T1827]  put_chars (drivers/char/virtio_console.c:1176)
[   24.896027][ T1827]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   24.896033][ T1827]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   24.896041][ T1827]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   24.896044][ T1827]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   24.896048][ T1827]  console_emit_next_record (kernel/printk/printk.c:3183)
[   24.896052][ T1827]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   24.896054][ T1827]  ? 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))
[   24.896057][ T1827]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   24.896060][ T1827]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   24.896064][ T1827]  console_flush_one_record (kernel/printk/printk.c:3268)
[   24.896068][ T1827]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   24.896070][ T1827]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   24.896075][ T1827]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   24.896078][ T1827]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   24.896080][ T1827]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   24.896082][ T1827]  ? 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)
[   24.896085][ T1827]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   24.896087][ T1827]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   24.896090][ T1827]  vprintk_emit (kernel/printk/printk.c:2479)
[   24.896093][ T1827]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   24.896094][ T1827]  ? mark_held_locks (kernel/locking/lockdep.c:4341)
[   24.896097][ T1827]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   24.896099][ T1827]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   24.896103][ T1827]  _printk (kernel/printk/printk.c:2504)
[   24.896106][ T1827]  ? snapshot_read.cold (user.c:?)
[   24.896114][ T1827]  br_set_state (net/bridge/br_stp.c:57 (discriminator 2))
[   24.896118][ T1827]  br_stp_disable_port (net/bridge/br_stp_if.c:106)
[   24.896122][ T1827]  br_device_event (net/bridge/br.c:111)
[   24.896124][ T1827]  ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:211 (discriminator 1) kernel/locking/spinlock.c:221 (discriminator 1))
[   24.896128][ T1827]  ? packet_sendmsg_spkt (af_packet.c:?)
[   24.896133][ T1827]  notifier_call_chain (kernel/notifier.c:85)
[   24.896139][ T1827]  __dev_notify_flags (net/core/dev.c:2313 net/core/dev.c:2327 net/core/dev.c:9855)
[   24.896144][ T1827]  ? netif_change_name (net/core/dev.c:1517)
[   24.896147][ T1827]  ? netif_set_allmulti (./include/net/netdev_lock.h:33)
[   24.896150][ T1827]  ? __kernel_text_address (kernel/extable.c:79)
[   24.896153][ T1827]  ? write_profile (profile.c:?)
[   24.896158][ T1827]  netif_change_flags (net/core/dev.c:9882)
[   24.896161][ T1827]  do_setlink.isra.0 (net/core/rtnetlink.c:3266 (discriminator 1))
[   24.896165][ T1827]  ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1))
[   24.896167][ T1827]  ? rtnl_link_get_size (net/core/rtnetlink.c:747)
[   24.896168][ T1827]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380)
[   24.896170][ T1827]  ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2))
[   24.896173][ T1827]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   24.896175][ T1827]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   24.896177][ T1827]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   24.896180][ T1827]  ? kasan_save_stack (mm/kasan/common.c:58)
[   24.896182][ T1827]  ? kasan_save_stack (mm/kasan/common.c:57)
[   24.896183][ T1827]  ? kasan_save_track (mm/kasan/common.c:78)
[   24.896184][ T1827]  ? __kasan_kmalloc (mm/kasan/common.c:398 mm/kasan/common.c:415)
[   24.896187][ T1827]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   24.896188][ T1827]  ? snd_ac97_proc_read_main (sound/pci/ac97/ac97_proc.c:320)
[   24.896191][ T1827]  ? ___sys_sendmsg (net/socket.c:2758)
[   24.896195][ T1827]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   24.896197][ T1827]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   24.896199][ T1827]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   24.896201][ T1827]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   24.896203][ T1827]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   24.896204][ T1827]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   24.896205][ T1827]  ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22))
[   24.896208][ T1827]  ? __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)
[   24.896209][ T1827]  ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1))
[   24.896211][ T1827]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   24.896214][ T1827]  ? ww_mutex_lock (kernel/locking/mutex.c:934)
[   24.896218][ T1827]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   24.896220][ T1827]  ? __rtnl_newlink (net/core/rtnetlink.c:4063)
[   24.896225][ T1827]  rtnl_newlink (net/core/rtnetlink.c:4215)
[   24.896230][ T1827]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   24.896232][ T1827]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   24.896237][ T1827]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   24.896239][ T1827]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   24.896241][ T1827]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   24.896243][ T1827]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   24.896246][ T1827]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   24.896248][ T1827]  rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   24.896252][ T1827]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   24.896253][ T1827]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   24.896257][ T1827]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   24.896259][ T1827]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   24.896263][ T1827]  netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   24.896266][ T1827]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   24.896269][ T1827]  ? netlink_ack (./include/linux/skbuff.h:2718)
[   24.896275][ T1827]  ? 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))
[   24.896277][ T1827]  ? 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))
[   24.896281][ T1827]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   24.896285][ T1827]  ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   24.896288][ T1827]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   24.896292][ T1827]  netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   24.896296][ T1827]  ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7))
[   24.896300][ T1827]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   24.896301][ T1827]  ? __import_iovec (lib/iov_iter.c:1358 lib/iov_iter.c:1373)
[   24.896307][ T1827]  __sock_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4))
[   24.896309][ T1827]  ____sys_sendmsg (net/socket.c:2713)
[   24.896312][ T1827]  ? copy_msghdr_from_user (net/socket.c:2650)
[   24.896314][ T1827]  ? sock_write_iter (net/socket.c:1269)
[   24.896315][ T1827]  ? move_addr_to_kernel (net/socket.c:258)
[   24.896323][ T1827]  ___sys_sendmsg (net/socket.c:2767)
[   24.896325][ T1827]  ? copy_msghdr_from_user (net/socket.c:2619)
[   24.896341][ T1827]  __sys_sendmsg (net/socket.c:2799)
[   24.896344][ T1827]  ? __sys_sendmsg_sock (net/socket.c:2780)
[   24.896350][ T1827]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   24.896353][ T1827]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   24.896356][ T1827]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   24.896359][ T1827]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   24.896361][ T1827] RIP: 0033:0x7fdc1fef554e
[   24.896363][ T1827] 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
[   24.896365][ T1827] RSP: 002b:00007fff9f51e0f0 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
[   24.896367][ T1827] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007fdc1fef554e
[   24.896369][ T1827] RDX: 0000000000000000 RSI: 00007fff9f51e1a0 RDI: 0000000000000005
[   24.896370][ T1827] RBP: 00007fff9f51e100 R08: 0000000000000000 R09: 0000000000000000
[   24.896370][ T1827] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a90f4a8
[   24.896371][ T1827] R13: 00000000004a1620 R14: 0000000000000000 R15: 00007fff9f51e860
| [   26.062422][ T1965] softirqs last disabled at (20476): br_device_event (./include/linux/spinlock.h:353 net/bridge/br.c:119)
| [   26.062425][ T1965] Preemption disabled at:
| [   26.062425][ T1965] 0x0
| [   26.062435][ T1965] Tainted: [W]=WARN
[   26.062436][ T1965] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   26.062438][ T1965] Call Trace:
[   26.062440][ T1965]  <TASK>
[   26.062441][ T1965]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   26.062447][ T1965]  __might_resched.cold (kernel/sched/core.c:9234)
[   26.062452][ T1965]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   26.062456][ T1965]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   26.062460][ T1965]  __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))
[   26.062462][ T1965]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   26.062469][ T1965]  ? 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)
[   26.062471][ T1965]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   26.062475][ T1965]  put_chars (drivers/char/virtio_console.c:1176)
[   26.062478][ T1965]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   26.062479][ T1965]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   26.062482][ T1965]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   26.062488][ T1965]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   26.062495][ T1965]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   26.062498][ T1965]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   26.062500][ T1965]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   26.062504][ T1965]  console_emit_next_record (kernel/printk/printk.c:3183)
[   26.062508][ T1965]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   26.062510][ T1965]  ? 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))
[   26.062513][ T1965]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   26.062514][ T1965]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   26.062518][ T1965]  console_flush_one_record (kernel/printk/printk.c:3268)
[   26.062522][ T1965]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   26.062524][ T1965]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   26.062529][ T1965]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   26.062532][ T1965]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   26.062534][ T1965]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   26.062536][ T1965]  ? 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)
[   26.062539][ T1965]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   26.062541][ T1965]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   26.062544][ T1965]  vprintk_emit (kernel/printk/printk.c:2479)
[   26.062547][ T1965]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   26.062549][ T1965]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   26.062551][ T1965]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   26.062555][ T1965]  _printk (kernel/printk/printk.c:2504)
[   26.062559][ T1965]  ? snapshot_read.cold (user.c:?)
[   26.062564][ T1965]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   26.062567][ T1965]  br_set_state (net/bridge/br_stp.c:57 (discriminator 2))
[   26.062572][ T1965]  br_init_port (net/bridge/br_stp_if.c:39)
[   26.062574][ T1965]  br_stp_enable_port (net/bridge/br_stp_if.c:93)
[   26.062576][ T1965]  br_device_event (net/bridge/br.c:120)
[   26.062579][ T1965]  ? packet_sendmsg_spkt (af_packet.c:?)
[   26.062581][ T1965]  ? nlmsg_notify (./include/net/netlink.h:1165 ./include/net/netlink.h:1184 net/netlink/af_netlink.c:2599)
[   26.062587][ T1965]  notifier_call_chain (kernel/notifier.c:85)
[   26.062593][ T1965]  __dev_notify_flags (net/core/dev.c:2313 net/core/dev.c:2327 net/core/dev.c:9853)
[   26.062597][ T1965]  ? netif_change_name (net/core/dev.c:1517)
[   26.062601][ T1965]  ? netif_set_allmulti (./include/net/netdev_lock.h:33)
[   26.062603][ T1965]  ? kernel_text_address (kernel/extable.c:125 kernel/extable.c:94)
[   26.062606][ T1965]  ? __kernel_text_address (kernel/extable.c:79)
[   26.062608][ T1965]  ? write_profile (profile.c:?)
[   26.062617][ T1965]  netif_change_flags (net/core/dev.c:9882)
[   26.062621][ T1965]  do_setlink.isra.0 (net/core/rtnetlink.c:3266 (discriminator 1))
[   26.062625][ T1965]  ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1))
[   26.062627][ T1965]  ? rtnl_link_get_size (net/core/rtnetlink.c:747)
[   26.062628][ T1965]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380)
[   26.062630][ T1965]  ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2))
[   26.062633][ T1965]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   26.062635][ T1965]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   26.062637][ T1965]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   26.062639][ T1965]  ? kasan_save_stack (mm/kasan/common.c:58)
[   26.062642][ T1965]  ? kasan_save_stack (mm/kasan/common.c:57)
[   26.062643][ T1965]  ? kasan_save_track (mm/kasan/common.c:78)
[   26.062644][ T1965]  ? __kasan_kmalloc (mm/kasan/common.c:398 mm/kasan/common.c:415)
[   26.062646][ T1965]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   26.062648][ T1965]  ? snd_ac97_proc_read_main (sound/pci/ac97/ac97_proc.c:320)
[   26.062651][ T1965]  ? ___sys_sendmsg (net/socket.c:2758)
[   26.062655][ T1965]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   26.062656][ T1965]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   26.062659][ T1965]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   26.062661][ T1965]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   26.062662][ T1965]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   26.062663][ T1965]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   26.062665][ T1965]  ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22))
[   26.062667][ T1965]  ? __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)
[   26.062670][ T1965]  ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1))
[   26.062672][ T1965]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   26.062675][ T1965]  ? ww_mutex_lock (kernel/locking/mutex.c:934)
[   26.062678][ T1965]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   26.062681][ T1965]  ? __rtnl_newlink (net/core/rtnetlink.c:4063)
[   26.062686][ T1965]  rtnl_newlink (net/core/rtnetlink.c:4215)
[   26.062691][ T1965]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   26.062693][ T1965]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   26.062697][ T1965]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   26.062699][ T1965]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   26.062701][ T1965]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   26.062703][ T1965]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   26.062707][ T1965]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   26.062709][ T1965]  rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   26.062712][ T1965]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   26.062713][ T1965]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   26.062718][ T1965]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   26.062719][ T1965]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   26.062723][ T1965]  netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   26.062725][ T1965]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   26.062728][ T1965]  ? netlink_ack (./include/linux/skbuff.h:2718)
[   26.062734][ T1965]  ? 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))
[   26.062736][ T1965]  ? 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))
[   26.062741][ T1965]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   26.062744][ T1965]  ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   26.062747][ T1965]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   26.062751][ T1965]  netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   26.062755][ T1965]  ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7))
[   26.062759][ T1965]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   26.062760][ T1965]  ? __import_iovec (lib/iov_iter.c:1358 lib/iov_iter.c:1373)
[   26.062765][ T1965]  __sock_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4))
[   26.062768][ T1965]  ____sys_sendmsg (net/socket.c:2713)
[   26.062770][ T1965]  ? copy_msghdr_from_user (net/socket.c:2650)
[   26.062773][ T1965]  ? sock_write_iter (net/socket.c:1269)
[   26.062774][ T1965]  ? move_addr_to_kernel (net/socket.c:258)
[   26.062781][ T1965]  ___sys_sendmsg (net/socket.c:2767)
[   26.062784][ T1965]  ? copy_msghdr_from_user (net/socket.c:2619)
[   26.062800][ T1965]  __sys_sendmsg (net/socket.c:2799)
[   26.062803][ T1965]  ? __sys_sendmsg_sock (net/socket.c:2780)
[   26.062809][ T1965]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   26.062812][ T1965]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   26.062815][ T1965]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   26.062817][ T1965]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   26.062819][ T1965] RIP: 0033:0x7f6cc92dc54e
[   26.062822][ T1965] 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
[   26.062823][ T1965] RSP: 002b:00007ffe1413c790 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
[   26.062826][ T1965] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f6cc92dc54e
[   26.062828][ T1965] RDX: 0000000000000000 RSI: 00007ffe1413c840 RDI: 0000000000000005
[   26.062829][ T1965] RBP: 00007ffe1413c7a0 R08: 0000000000000000 R09: 0000000000000000
[   26.062830][ T1965] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a90f4a9
[   26.062830][ T1965] R13: 00000000004a1620 R14: 0000000000000000 R15: 00007ffe1413cf00
| [   27.509905][   T36] softirqs last disabled at (311484): br_port_carrier_check (./include/linux/spinlock.h:353 net/bridge/br_if.c:87)
| [   27.509908][   T36] Preemption disabled at:
| [   27.509908][   T36] 0x0
| [   27.509918][   T36] Tainted: [W]=WARN
[   27.509919][   T36] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   27.509921][   T36] Workqueue: events_unbound linkwatch_event
[   27.509924][   T36] Call Trace:
[   27.509926][   T36]  <TASK>
[   27.509927][   T36]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   27.509934][   T36]  __might_resched.cold (kernel/sched/core.c:9234)
[   27.509939][   T36]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   27.509943][   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)
[   27.509947][   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))
[   27.509950][   T36]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   27.509956][   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)
[   27.509959][   T36]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   27.509963][   T36]  put_chars (drivers/char/virtio_console.c:1176)
[   27.509965][   T36]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   27.509968][   T36]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   27.509971][   T36]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   27.509974][   T36]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   27.509978][   T36]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   27.509982][   T36]  ? mark_usage (kernel/locking/lockdep.c:4690)
[   27.509984][   T36]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   27.509986][   T36]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   27.509990][   T36]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   27.509992][   T36]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   27.509996][   T36]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   27.510000][   T36]  console_emit_next_record (kernel/printk/printk.c:3183)
[   27.510004][   T36]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   27.510006][   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))
[   27.510009][   T36]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   27.510011][   T36]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   27.510015][   T36]  console_flush_one_record (kernel/printk/printk.c:3268)
[   27.510020][   T36]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   27.510021][   T36]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   27.510027][   T36]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   27.510030][   T36]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   27.510032][   T36]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   27.510033][   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)
[   27.510037][   T36]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   27.510039][   T36]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   27.510042][   T36]  vprintk_emit (kernel/printk/printk.c:2479)
[   27.510045][   T36]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   27.510047][   T36]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   27.510049][   T36]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   27.510053][   T36]  _printk (kernel/printk/printk.c:2504)
[   27.510056][   T36]  ? snapshot_read.cold (user.c:?)
[   27.510061][   T36]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   27.510065][   T36]  br_set_state (net/bridge/br_stp.c:57 (discriminator 2))
[   27.510070][   T36]  br_init_port (net/bridge/br_stp_if.c:39)
[   27.510072][   T36]  br_stp_enable_port (net/bridge/br_stp_if.c:93)
[   27.510074][   T36]  br_port_carrier_check (net/bridge/br_if.c:90)
[   27.510078][   T36]  br_device_event (net/bridge/br.c:101)
[   27.510081][   T36]  ? packet_sendmsg_spkt (af_packet.c:?)
[   27.510083][   T36]  ? nlmsg_notify (./include/net/netlink.h:1165 ./include/net/netlink.h:1184 net/netlink/af_netlink.c:2599)
[   27.510089][   T36]  notifier_call_chain (kernel/notifier.c:85)
[   27.510095][   T36]  netif_state_change (net/core/dev.c:1625)
[   27.510100][   T36]  ? call_netdevice_notifiers_info (./include/net/net_namespace.h:422 (discriminator 7))
[   27.510105][   T36]  ? linkwatch_do_dev (net/core/link_watch.c:182 net/core/link_watch.c:166)
[   27.510107][   T36]  __linkwatch_run_queue (net/core/link_watch.c:240)
[   27.510110][   T36]  ? linkwatch_do_dev (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   27.510113][   T36]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   27.510117][   T36]  linkwatch_event (net/core/link_watch.c:314 (discriminator 11))
[   27.510120][   T36]  ? __linkwatch_run_queue (net/core/link_watch.c:213)
[   27.510123][   T36]  process_one_work (kernel/workqueue.c:3387)
[   27.510130][   T36]  ? __queue_delayed_work (kernel/workqueue.c:2622)
[   27.510133][   T36]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   27.510140][   T36]  worker_thread (kernel/workqueue.c:3470 kernel/workqueue.c:3551)
[   27.510147][   T36]  ? rescuer_thread (./include/linux/list.h:419 (discriminator 3))
[   27.510149][   T36]  kthread (kernel/kthread.c:436)
[   27.510152][   T36]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[   27.510155][   T36]  ? kthread_affine_preferred (kernel/kthread.c:857)
[   27.510158][   T36]  ret_from_fork (arch/x86/kernel/process.c:158)
[   27.510162][   T36]  ? arch_exit_to_user_mode_prepare.isra.0 (arch/x86/entry/vdso/vma.c:80 (discriminator 1))
[   27.510166][   T36]  ? __switch_to (arch/x86/kernel/process_64.c:403 arch/x86/kernel/process_64.c:663)
[   27.510169][   T36]  ? kthread_affine_preferred (kernel/kthread.c:857)
[   27.510172][   T36]  ret_from_fork_asm (arch/x86/entry/entry_64.S:245)
| [   28.780497][   T38] softirqs last disabled at (84060): br_port_carrier_check (./include/linux/spinlock.h:353 net/bridge/br_if.c:87)
| [   28.780500][   T38] Preemption disabled at:
| [   28.780501][   T38] 0x0
| [   28.780511][   T38] Tainted: [W]=WARN
[   28.780512][   T38] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   28.780514][   T38] Workqueue: events_unbound linkwatch_event
[   28.780517][   T38] Call Trace:
[   28.780519][   T38]  <TASK>
[   28.780521][   T38]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   28.780527][   T38]  __might_resched.cold (kernel/sched/core.c:9234)
[   28.780532][   T38]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   28.780536][   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)
[   28.780540][   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))
[   28.780542][   T38]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   28.780549][   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)
[   28.780551][   T38]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   28.780555][   T38]  put_chars (drivers/char/virtio_console.c:1176)
[   28.780557][   T38]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   28.780559][   T38]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   28.780562][   T38]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   28.780565][   T38]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   28.780567][   T38]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   28.780571][   T38]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   28.780575][   T38]  ? mark_usage (kernel/locking/lockdep.c:4690)
[   28.780577][   T38]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   28.780579][   T38]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   28.780583][   T38]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   28.780585][   T38]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   28.780589][   T38]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   28.780593][   T38]  console_emit_next_record (kernel/printk/printk.c:3183)
[   28.780597][   T38]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   28.780599][   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))
[   28.780602][   T38]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   28.780604][   T38]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   28.780608][   T38]  console_flush_one_record (kernel/printk/printk.c:3268)
[   28.780612][   T38]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   28.780614][   T38]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   28.780619][   T38]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   28.780622][   T38]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   28.780624][   T38]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   28.780626][   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)
[   28.780633][   T38]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   28.780635][   T38]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   28.780638][   T38]  vprintk_emit (kernel/printk/printk.c:2479)
[   28.780641][   T38]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   28.780643][   T38]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   28.780645][   T38]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   28.780649][   T38]  _printk (kernel/printk/printk.c:2504)
[   28.780653][   T38]  ? snapshot_read.cold (user.c:?)
[   28.780658][   T38]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   28.780662][   T38]  br_set_state (net/bridge/br_stp.c:57 (discriminator 2))
[   28.780666][   T38]  br_init_port (net/bridge/br_stp_if.c:39)
[   28.780668][   T38]  br_stp_enable_port (net/bridge/br_stp_if.c:93)
[   28.780670][   T38]  br_port_carrier_check (net/bridge/br_if.c:90)
[   28.780674][   T38]  br_device_event (net/bridge/br.c:101)
[   28.780677][   T38]  ? packet_sendmsg_spkt (af_packet.c:?)
[   28.780679][   T38]  ? nlmsg_notify (./include/net/netlink.h:1165 ./include/net/netlink.h:1184 net/netlink/af_netlink.c:2599)
[   28.780686][   T38]  notifier_call_chain (kernel/notifier.c:85)
[   28.780691][   T38]  netif_state_change (net/core/dev.c:1625)
[   28.780696][   T38]  ? call_netdevice_notifiers_info (./include/net/net_namespace.h:422 (discriminator 7))
[   28.780701][   T38]  ? linkwatch_do_dev (net/core/link_watch.c:182 net/core/link_watch.c:166)
[   28.780703][   T38]  __linkwatch_run_queue (net/core/link_watch.c:240)
[   28.780706][   T38]  ? linkwatch_do_dev (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   28.780708][   T38]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   28.780712][   T38]  linkwatch_event (net/core/link_watch.c:314 (discriminator 11))
[   28.780715][   T38]  ? __linkwatch_run_queue (net/core/link_watch.c:213)
[   28.780718][   T38]  process_one_work (kernel/workqueue.c:3387)
[   28.780725][   T38]  ? __queue_delayed_work (kernel/workqueue.c:2622)
[   28.780728][   T38]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   28.780735][   T38]  worker_thread (kernel/workqueue.c:3470 kernel/workqueue.c:3551)
[   28.780742][   T38]  ? rescuer_thread (./include/linux/list.h:419 (discriminator 3))
[   28.780745][   T38]  kthread (kernel/kthread.c:436)
[   28.780747][   T38]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[   28.780750][   T38]  ? kthread_affine_preferred (kernel/kthread.c:857)
[   28.780753][   T38]  ret_from_fork (arch/x86/kernel/process.c:158)
[   28.780757][   T38]  ? arch_exit_to_user_mode_prepare.isra.0 (arch/x86/entry/vdso/vma.c:80 (discriminator 1))
[   28.780760][   T38]  ? __switch_to (arch/x86/kernel/process_64.c:403 arch/x86/kernel/process_64.c:663)
[   28.780764][   T38]  ? kthread_affine_preferred (kernel/kthread.c:857)
[   28.780767][   T38]  ret_from_fork_asm (arch/x86/entry/entry_64.S:245)
| [   30.144254][ T2353] softirqs last disabled at (11846): br_device_event (./include/linux/spinlock.h:353 net/bridge/br.c:119)
| [   30.144256][ T2353] Preemption disabled at:
| [   30.144257][ T2353] 0x0
| [   30.144267][ T2353] Tainted: [W]=WARN
[   30.144268][ T2353] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   30.144270][ T2353] Call Trace:
[   30.144271][ T2353]  <TASK>
[   30.144273][ T2353]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   30.144279][ T2353]  __might_resched.cold (kernel/sched/core.c:9234)
[   30.144284][ T2353]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   30.144289][ T2353]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   30.144293][ T2353]  __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))
[   30.144295][ T2353]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   30.144301][ T2353]  ? 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)
[   30.144304][ T2353]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   30.144308][ T2353]  put_chars (drivers/char/virtio_console.c:1176)
[   30.144310][ T2353]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   30.144312][ T2353]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   30.144315][ T2353]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   30.144321][ T2353]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   30.144328][ T2353]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   30.144331][ T2353]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   30.144333][ T2353]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   30.144337][ T2353]  console_emit_next_record (kernel/printk/printk.c:3183)
[   30.144341][ T2353]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   30.144343][ T2353]  ? 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))
[   30.144346][ T2353]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   30.144347][ T2353]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   30.144351][ T2353]  console_flush_one_record (kernel/printk/printk.c:3268)
[   30.144355][ T2353]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   30.144357][ T2353]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   30.144363][ T2353]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   30.144366][ T2353]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   30.144367][ T2353]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   30.144369][ T2353]  ? 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)
[   30.144373][ T2353]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   30.144374][ T2353]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   30.144377][ T2353]  vprintk_emit (kernel/printk/printk.c:2479)
[   30.144380][ T2353]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   30.144383][ T2353]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   30.144384][ T2353]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   30.144389][ T2353]  _printk (kernel/printk/printk.c:2504)
[   30.144392][ T2353]  ? snapshot_read.cold (user.c:?)
[   30.144397][ T2353]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   30.144401][ T2353]  br_set_state (net/bridge/br_stp.c:57 (discriminator 2))
[   30.144406][ T2353]  br_init_port (net/bridge/br_stp_if.c:39)
[   30.144408][ T2353]  br_stp_enable_port (net/bridge/br_stp_if.c:93)
[   30.144410][ T2353]  br_device_event (net/bridge/br.c:120)
[   30.144413][ T2353]  ? packet_sendmsg_spkt (af_packet.c:?)
[   30.144417][ T2353]  ? nlmsg_notify (./include/net/netlink.h:1165 ./include/net/netlink.h:1184 net/netlink/af_netlink.c:2599)
[   30.144423][ T2353]  notifier_call_chain (kernel/notifier.c:85)
[   30.144429][ T2353]  __dev_notify_flags (net/core/dev.c:2313 net/core/dev.c:2327 net/core/dev.c:9853)
[   30.144434][ T2353]  ? netif_change_name (net/core/dev.c:1517)
[   30.144438][ T2353]  ? netif_set_allmulti (./include/net/netdev_lock.h:33)
[   30.144441][ T2353]  ? kernel_text_address (kernel/extable.c:125 kernel/extable.c:94)
[   30.144444][ T2353]  ? __kernel_text_address (kernel/extable.c:79)
[   30.144445][ T2353]  ? write_profile (profile.c:?)
[   30.144450][ T2353]  netif_change_flags (net/core/dev.c:9882)
[   30.144454][ T2353]  do_setlink.isra.0 (net/core/rtnetlink.c:3266 (discriminator 1))
[   30.144457][ T2353]  ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1))
[   30.144459][ T2353]  ? rtnl_link_get_size (net/core/rtnetlink.c:747)
[   30.144461][ T2353]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380)
[   30.144463][ T2353]  ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2))
[   30.144466][ T2353]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   30.144468][ T2353]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   30.144470][ T2353]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   30.144472][ T2353]  ? kasan_save_stack (mm/kasan/common.c:58)
[   30.144474][ T2353]  ? kasan_save_stack (mm/kasan/common.c:57)
[   30.144475][ T2353]  ? kasan_save_track (mm/kasan/common.c:78)
[   30.144476][ T2353]  ? __kasan_kmalloc (mm/kasan/common.c:398 mm/kasan/common.c:415)
[   30.144479][ T2353]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   30.144481][ T2353]  ? snd_ac97_proc_read_main (sound/pci/ac97/ac97_proc.c:320)
[   30.144484][ T2353]  ? ___sys_sendmsg (net/socket.c:2758)
[   30.144487][ T2353]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   30.144489][ T2353]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   30.144492][ T2353]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   30.144493][ T2353]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   30.144495][ T2353]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   30.144496][ T2353]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   30.144497][ T2353]  ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22))
[   30.144500][ T2353]  ? __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)
[   30.144502][ T2353]  ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1))
[   30.144504][ T2353]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   30.144508][ T2353]  ? ww_mutex_lock (kernel/locking/mutex.c:934)
[   30.144511][ T2353]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   30.144513][ T2353]  ? __rtnl_newlink (net/core/rtnetlink.c:4063)
[   30.144518][ T2353]  rtnl_newlink (net/core/rtnetlink.c:4215)
[   30.144524][ T2353]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   30.144525][ T2353]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   30.144530][ T2353]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   30.144532][ T2353]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   30.144534][ T2353]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   30.144536][ T2353]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   30.144539][ T2353]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   30.144541][ T2353]  rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   30.144544][ T2353]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   30.144546][ T2353]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   30.144550][ T2353]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   30.144552][ T2353]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   30.144555][ T2353]  netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   30.144557][ T2353]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   30.144560][ T2353]  ? netlink_ack (./include/linux/skbuff.h:2718)
[   30.144566][ T2353]  ? 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))
[   30.144569][ T2353]  ? 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))
[   30.144573][ T2353]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   30.144577][ T2353]  ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   30.144579][ T2353]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   30.144584][ T2353]  netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   30.144587][ T2353]  ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7))
[   30.144591][ T2353]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   30.144593][ T2353]  ? __import_iovec (lib/iov_iter.c:1358 lib/iov_iter.c:1373)
[   30.144598][ T2353]  __sock_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4))
[   30.144601][ T2353]  ____sys_sendmsg (net/socket.c:2713)
[   30.144603][ T2353]  ? copy_msghdr_from_user (net/socket.c:2650)
[   30.144605][ T2353]  ? sock_write_iter (net/socket.c:1269)
[   30.144607][ T2353]  ? move_addr_to_kernel (net/socket.c:258)
[   30.144614][ T2353]  ___sys_sendmsg (net/socket.c:2767)
[   30.144617][ T2353]  ? copy_msghdr_from_user (net/socket.c:2619)
[   30.144632][ T2353]  __sys_sendmsg (net/socket.c:2799)
[   30.144635][ T2353]  ? __sys_sendmsg_sock (net/socket.c:2780)
[   30.144646][ T2353]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   30.144649][ T2353]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   30.144653][ T2353]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   30.144655][ T2353]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   30.144658][ T2353] RIP: 0033:0x7f3ef127b54e
[   30.144660][ T2353] 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
[   30.144662][ T2353] RSP: 002b:00007ffe33becbf0 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
[   30.144664][ T2353] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f3ef127b54e
[   30.144665][ T2353] RDX: 0000000000000000 RSI: 00007ffe33becca0 RDI: 0000000000000005
[   30.144666][ T2353] RBP: 00007ffe33becc00 R08: 0000000000000000 R09: 0000000000000000
[   30.144667][ T2353] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a90f4ad
[   30.144668][ T2353] R13: 00000000004a1620 R14: 0000000000000000 R15: 00007ffe33bed360
| [   31.800318][ T2490] softirqs last disabled at (19046): br_device_event (./include/linux/spinlock.h:353 net/bridge/br.c:109)
| [   31.800320][ T2490] Preemption disabled at:
| [   31.800321][ T2490] 0x0
| [   31.800331][ T2490] Tainted: [W]=WARN
[   31.800332][ T2490] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   31.800334][ T2490] Call Trace:
[   31.800335][ T2490]  <TASK>
[   31.800337][ T2490]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   31.800343][ T2490]  __might_resched.cold (kernel/sched/core.c:9234)
[   31.800348][ T2490]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   31.800352][ T2490]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   31.800356][ T2490]  __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))
[   31.800358][ T2490]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   31.800364][ T2490]  ? 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)
[   31.800367][ T2490]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   31.800371][ T2490]  put_chars (drivers/char/virtio_console.c:1176)
[   31.800373][ T2490]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   31.800380][ T2490]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   31.800387][ T2490]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   31.800390][ T2490]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   31.800395][ T2490]  console_emit_next_record (kernel/printk/printk.c:3183)
[   31.800398][ T2490]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   31.800400][ T2490]  ? 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))
[   31.800403][ T2490]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   31.800406][ T2490]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   31.800410][ T2490]  console_flush_one_record (kernel/printk/printk.c:3268)
[   31.800417][ T2490]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   31.800419][ T2490]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   31.800426][ T2490]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   31.800429][ T2490]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   31.800431][ T2490]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   31.800433][ T2490]  ? 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)
[   31.800438][ T2490]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   31.800440][ T2490]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   31.800443][ T2490]  vprintk_emit (kernel/printk/printk.c:2479)
[   31.800447][ T2490]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   31.800448][ T2490]  ? mark_held_locks (kernel/locking/lockdep.c:4341)
[   31.800451][ T2490]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   31.800453][ T2490]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   31.800457][ T2490]  _printk (kernel/printk/printk.c:2504)
[   31.800461][ T2490]  ? snapshot_read.cold (user.c:?)
[   31.800469][ T2490]  br_set_state (net/bridge/br_stp.c:57 (discriminator 2))
[   31.800474][ T2490]  br_stp_disable_port (net/bridge/br_stp_if.c:106)
[   31.800477][ T2490]  br_device_event (net/bridge/br.c:111)
[   31.800479][ T2490]  ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:211 (discriminator 1) kernel/locking/spinlock.c:221 (discriminator 1))
[   31.800483][ T2490]  ? packet_sendmsg_spkt (af_packet.c:?)
[   31.800489][ T2490]  notifier_call_chain (kernel/notifier.c:85)
[   31.800495][ T2490]  __dev_notify_flags (net/core/dev.c:2313 net/core/dev.c:2327 net/core/dev.c:9855)
[   31.800499][ T2490]  ? netif_change_name (net/core/dev.c:1517)
[   31.800503][ T2490]  ? netif_set_allmulti (./include/net/netdev_lock.h:33)
[   31.800506][ T2490]  ? __kernel_text_address (kernel/extable.c:79)
[   31.800509][ T2490]  ? write_profile (profile.c:?)
[   31.800514][ T2490]  netif_change_flags (net/core/dev.c:9882)
[   31.800518][ T2490]  do_setlink.isra.0 (net/core/rtnetlink.c:3266 (discriminator 1))
[   31.800521][ T2490]  ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1))
[   31.800523][ T2490]  ? rtnl_link_get_size (net/core/rtnetlink.c:747)
[   31.800524][ T2490]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380)
[   31.800526][ T2490]  ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2))
[   31.800530][ T2490]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   31.800532][ T2490]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   31.800533][ T2490]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   31.800536][ T2490]  ? kasan_save_stack (mm/kasan/common.c:58)
[   31.800538][ T2490]  ? kasan_save_stack (mm/kasan/common.c:57)
[   31.800539][ T2490]  ? kasan_save_track (mm/kasan/common.c:78)
[   31.800541][ T2490]  ? __kasan_kmalloc (mm/kasan/common.c:398 mm/kasan/common.c:415)
[   31.800543][ T2490]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   31.800545][ T2490]  ? snd_ac97_proc_read_main (sound/pci/ac97/ac97_proc.c:320)
[   31.800548][ T2490]  ? ___sys_sendmsg (net/socket.c:2758)
[   31.800552][ T2490]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   31.800553][ T2490]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   31.800556][ T2490]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   31.800558][ T2490]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   31.800559][ T2490]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   31.800560][ T2490]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   31.800562][ T2490]  ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22))
[   31.800564][ T2490]  ? __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)
[   31.800566][ T2490]  ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1))
[   31.800567][ T2490]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   31.800571][ T2490]  ? ww_mutex_lock (kernel/locking/mutex.c:934)
[   31.800574][ T2490]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   31.800576][ T2490]  ? __rtnl_newlink (net/core/rtnetlink.c:4063)
[   31.800582][ T2490]  rtnl_newlink (net/core/rtnetlink.c:4215)
[   31.800587][ T2490]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   31.800589][ T2490]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   31.800593][ T2490]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   31.800595][ T2490]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   31.800597][ T2490]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   31.800599][ T2490]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   31.800603][ T2490]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   31.800605][ T2490]  rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   31.800608][ T2490]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   31.800609][ T2490]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   31.800614][ T2490]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   31.800616][ T2490]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   31.800619][ T2490]  netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   31.800622][ T2490]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   31.800625][ T2490]  ? netlink_ack (./include/linux/skbuff.h:2718)
[   31.800631][ T2490]  ? 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))
[   31.800633][ T2490]  ? 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))
[   31.800638][ T2490]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   31.800642][ T2490]  ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   31.800644][ T2490]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   31.800652][ T2490]  netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   31.800657][ T2490]  ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7))
[   31.800660][ T2490]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   31.800662][ T2490]  ? __import_iovec (lib/iov_iter.c:1358 lib/iov_iter.c:1373)
[   31.800667][ T2490]  __sock_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4))
[   31.800670][ T2490]  ____sys_sendmsg (net/socket.c:2713)
[   31.800672][ T2490]  ? copy_msghdr_from_user (net/socket.c:2650)
[   31.800675][ T2490]  ? sock_write_iter (net/socket.c:1269)
[   31.800676][ T2490]  ? move_addr_to_kernel (net/socket.c:258)
[   31.800684][ T2490]  ___sys_sendmsg (net/socket.c:2767)
[   31.800686][ T2490]  ? copy_msghdr_from_user (net/socket.c:2619)
[   31.800702][ T2490]  __sys_sendmsg (net/socket.c:2799)
[   31.800705][ T2490]  ? __sys_sendmsg_sock (net/socket.c:2780)
[   31.800711][ T2490]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   31.800714][ T2490]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   31.800717][ T2490]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   31.800720][ T2490]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   31.800722][ T2490] RIP: 0033:0x7f5a8635554e
[   31.800724][ T2490] 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
[   31.800726][ T2490] RSP: 002b:00007fff626e4b00 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
[   31.800729][ T2490] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f5a8635554e
[   31.800730][ T2490] RDX: 0000000000000000 RSI: 00007fff626e4bb0 RDI: 0000000000000005
[   31.800731][ T2490] RBP: 00007fff626e4b10 R08: 0000000000000000 R09: 0000000000000000
[   31.800732][ T2490] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a90f4af
[   31.800732][ T2490] R13: 00000000004a1620 R14: 0000000000000000 R15: 00007fff626e5270
| [   32.995217][ T2600] softirqs last disabled at (27800): br_device_event (./include/linux/spinlock.h:353 net/bridge/br.c:119)
| [   32.995219][ T2600] Preemption disabled at:
| [   32.995220][ T2600] 0x0
| [   32.995230][ T2600] Tainted: [W]=WARN
[   32.995230][ T2600] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   32.995232][ T2600] Call Trace:
[   32.995234][ T2600]  <TASK>
[   32.995235][ T2600]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   32.995242][ T2600]  __might_resched.cold (kernel/sched/core.c:9234)
[   32.995247][ T2600]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   32.995251][ T2600]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   32.995256][ T2600]  __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))
[   32.995257][ T2600]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   32.995264][ T2600]  ? 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)
[   32.995266][ T2600]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   32.995269][ T2600]  put_chars (drivers/char/virtio_console.c:1176)
[   32.995272][ T2600]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   32.995273][ T2600]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   32.995277][ T2600]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   32.995282][ T2600]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   32.995290][ T2600]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   32.995292][ T2600]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   32.995294][ T2600]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   32.995298][ T2600]  console_emit_next_record (kernel/printk/printk.c:3183)
[   32.995302][ T2600]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   32.995304][ T2600]  ? 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))
[   32.995307][ T2600]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   32.995308][ T2600]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   32.995312][ T2600]  console_flush_one_record (kernel/printk/printk.c:3268)
[   32.995316][ T2600]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   32.995318][ T2600]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   32.995324][ T2600]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   32.995327][ T2600]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   32.995328][ T2600]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   32.995330][ T2600]  ? 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)
[   32.995334][ T2600]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   32.995335][ T2600]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   32.995338][ T2600]  vprintk_emit (kernel/printk/printk.c:2479)
[   32.995341][ T2600]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   32.995343][ T2600]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   32.995345][ T2600]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   32.995350][ T2600]  _printk (kernel/printk/printk.c:2504)
[   32.995353][ T2600]  ? snapshot_read.cold (user.c:?)
[   32.995358][ T2600]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   32.995362][ T2600]  br_set_state (net/bridge/br_stp.c:57 (discriminator 2))
[   32.995367][ T2600]  br_init_port (net/bridge/br_stp_if.c:39)
[   32.995369][ T2600]  br_stp_enable_port (net/bridge/br_stp_if.c:93)
[   32.995371][ T2600]  br_device_event (net/bridge/br.c:120)
[   32.995374][ T2600]  ? packet_sendmsg_spkt (af_packet.c:?)
[   32.995375][ T2600]  ? nlmsg_notify (./include/net/netlink.h:1165 ./include/net/netlink.h:1184 net/netlink/af_netlink.c:2599)
[   32.995382][ T2600]  notifier_call_chain (kernel/notifier.c:85)
[   32.995387][ T2600]  __dev_notify_flags (net/core/dev.c:2313 net/core/dev.c:2327 net/core/dev.c:9853)
[   32.995392][ T2600]  ? netif_change_name (net/core/dev.c:1517)
[   32.995396][ T2600]  ? netif_set_allmulti (./include/net/netdev_lock.h:33)
[   32.995399][ T2600]  ? kernel_text_address (kernel/extable.c:125 kernel/extable.c:94)
[   32.995402][ T2600]  ? __kernel_text_address (kernel/extable.c:79)
[   32.995403][ T2600]  ? write_profile (profile.c:?)
[   32.995408][ T2600]  netif_change_flags (net/core/dev.c:9882)
[   32.995412][ T2600]  do_setlink.isra.0 (net/core/rtnetlink.c:3266 (discriminator 1))
[   32.995417][ T2600]  ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1))
[   32.995420][ T2600]  ? rtnl_link_get_size (net/core/rtnetlink.c:747)
[   32.995421][ T2600]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380)
[   32.995423][ T2600]  ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2))
[   32.995426][ T2600]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   32.995428][ T2600]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   32.995430][ T2600]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   32.995432][ T2600]  ? kasan_save_stack (mm/kasan/common.c:58)
[   32.995434][ T2600]  ? kasan_save_stack (mm/kasan/common.c:57)
[   32.995435][ T2600]  ? kasan_save_track (mm/kasan/common.c:78)
[   32.995437][ T2600]  ? __kasan_kmalloc (mm/kasan/common.c:398 mm/kasan/common.c:415)
[   32.995439][ T2600]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   32.995441][ T2600]  ? snd_ac97_proc_read_main (sound/pci/ac97/ac97_proc.c:320)
[   32.995444][ T2600]  ? ___sys_sendmsg (net/socket.c:2758)
[   32.995447][ T2600]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   32.995449][ T2600]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   32.995452][ T2600]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   32.995454][ T2600]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   32.995455][ T2600]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   32.995456][ T2600]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   32.995458][ T2600]  ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22))
[   32.995460][ T2600]  ? __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)
[   32.995463][ T2600]  ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1))
[   32.995464][ T2600]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   32.995468][ T2600]  ? ww_mutex_lock (kernel/locking/mutex.c:934)
[   32.995471][ T2600]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   32.995473][ T2600]  ? __rtnl_newlink (net/core/rtnetlink.c:4063)
[   32.995478][ T2600]  rtnl_newlink (net/core/rtnetlink.c:4215)
[   32.995484][ T2600]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   32.995486][ T2600]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   32.995490][ T2600]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   32.995492][ T2600]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   32.995494][ T2600]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   32.995496][ T2600]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   32.995499][ T2600]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   32.995501][ T2600]  rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   32.995504][ T2600]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   32.995506][ T2600]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   32.995510][ T2600]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   32.995512][ T2600]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   32.995516][ T2600]  netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   32.995517][ T2600]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   32.995520][ T2600]  ? netlink_ack (./include/linux/skbuff.h:2718)
[   32.995527][ T2600]  ? 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))
[   32.995529][ T2600]  ? 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))
[   32.995533][ T2600]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   32.995537][ T2600]  ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   32.995540][ T2600]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   32.995544][ T2600]  netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   32.995548][ T2600]  ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7))
[   32.995552][ T2600]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   32.995553][ T2600]  ? __import_iovec (lib/iov_iter.c:1358 lib/iov_iter.c:1373)
[   32.995558][ T2600]  __sock_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4))
[   32.995561][ T2600]  ____sys_sendmsg (net/socket.c:2713)
[   32.995563][ T2600]  ? copy_msghdr_from_user (net/socket.c:2650)
[   32.995565][ T2600]  ? sock_write_iter (net/socket.c:1269)
[   32.995567][ T2600]  ? move_addr_to_kernel (net/socket.c:258)
[   32.995574][ T2600]  ___sys_sendmsg (net/socket.c:2767)
[   32.995577][ T2600]  ? copy_msghdr_from_user (net/socket.c:2619)
[   32.995593][ T2600]  __sys_sendmsg (net/socket.c:2799)
[   32.995596][ T2600]  ? __sys_sendmsg_sock (net/socket.c:2780)
[   32.995602][ T2600]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   32.995605][ T2600]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   32.995608][ T2600]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   32.995611][ T2600]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   32.995613][ T2600] RIP: 0033:0x7ff97b3fd54e
[   32.995615][ T2600] 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
[   32.995617][ T2600] RSP: 002b:00007ffd5c67ad00 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
[   32.995620][ T2600] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007ff97b3fd54e
[   32.995621][ T2600] RDX: 0000000000000000 RSI: 00007ffd5c67adb0 RDI: 0000000000000005
[   32.995622][ T2600] RBP: 00007ffd5c67ad10 R08: 0000000000000000 R09: 0000000000000000
[   32.995623][ T2600] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a90f4b0
[   32.995623][ T2600] R13: 00000000004a1620 R14: 0000000000000000 R15: 00007ffd5c67b470
| [   34.002439][ T2693] softirqs last disabled at (20924): br_device_event (./include/linux/spinlock.h:353 net/bridge/br.c:109)
| [   34.002442][ T2693] Preemption disabled at:
| [   34.002442][ T2693] 0x0
| [   34.002452][ T2693] Tainted: [W]=WARN
[   34.002453][ T2693] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   34.002455][ T2693] Call Trace:
[   34.002456][ T2693]  <TASK>
[   34.002458][ T2693]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   34.002465][ T2693]  __might_resched.cold (kernel/sched/core.c:9234)
[   34.002469][ T2693]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   34.002474][ T2693]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   34.002478][ T2693]  __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))
[   34.002480][ T2693]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   34.002486][ T2693]  ? 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)
[   34.002489][ T2693]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   34.002493][ T2693]  put_chars (drivers/char/virtio_console.c:1176)
[   34.002495][ T2693]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   34.002501][ T2693]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   34.002509][ T2693]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   34.002512][ T2693]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   34.002517][ T2693]  console_emit_next_record (kernel/printk/printk.c:3183)
[   34.002521][ T2693]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   34.002522][ T2693]  ? 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))
[   34.002526][ T2693]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   34.002528][ T2693]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   34.002532][ T2693]  console_flush_one_record (kernel/printk/printk.c:3268)
[   34.002536][ T2693]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   34.002538][ T2693]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   34.002544][ T2693]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   34.002546][ T2693]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   34.002548][ T2693]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   34.002550][ T2693]  ? 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)
[   34.002554][ T2693]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   34.002556][ T2693]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   34.002558][ T2693]  vprintk_emit (kernel/printk/printk.c:2479)
[   34.002561][ T2693]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   34.002563][ T2693]  ? mark_held_locks (kernel/locking/lockdep.c:4341)
[   34.002565][ T2693]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   34.002567][ T2693]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   34.002572][ T2693]  _printk (kernel/printk/printk.c:2504)
[   34.002575][ T2693]  ? snapshot_read.cold (user.c:?)
[   34.002583][ T2693]  br_set_state (net/bridge/br_stp.c:57 (discriminator 2))
[   34.002588][ T2693]  br_stp_disable_port (net/bridge/br_stp_if.c:106)
[   34.002591][ T2693]  br_device_event (net/bridge/br.c:111)
[   34.002593][ T2693]  ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:211 (discriminator 1) kernel/locking/spinlock.c:221 (discriminator 1))
[   34.002597][ T2693]  ? packet_sendmsg_spkt (af_packet.c:?)
[   34.002603][ T2693]  notifier_call_chain (kernel/notifier.c:85)
[   34.002609][ T2693]  __dev_notify_flags (net/core/dev.c:2313 net/core/dev.c:2327 net/core/dev.c:9855)
[   34.002614][ T2693]  ? netif_change_name (net/core/dev.c:1517)
[   34.002618][ T2693]  ? netif_set_allmulti (./include/net/netdev_lock.h:33)
[   34.002621][ T2693]  ? __kernel_text_address (kernel/extable.c:79)
[   34.002623][ T2693]  ? write_profile (profile.c:?)
[   34.002628][ T2693]  netif_change_flags (net/core/dev.c:9882)
[   34.002632][ T2693]  do_setlink.isra.0 (net/core/rtnetlink.c:3266 (discriminator 1))
[   34.002635][ T2693]  ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1))
[   34.002637][ T2693]  ? rtnl_link_get_size (net/core/rtnetlink.c:747)
[   34.002639][ T2693]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380)
[   34.002641][ T2693]  ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2))
[   34.002644][ T2693]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   34.002646][ T2693]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   34.002648][ T2693]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   34.002650][ T2693]  ? kasan_save_stack (mm/kasan/common.c:58)
[   34.002652][ T2693]  ? kasan_save_stack (mm/kasan/common.c:57)
[   34.002654][ T2693]  ? kasan_save_track (mm/kasan/common.c:78)
[   34.002655][ T2693]  ? __kasan_kmalloc (mm/kasan/common.c:398 mm/kasan/common.c:415)
[   34.002657][ T2693]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   34.002659][ T2693]  ? snd_ac97_proc_read_main (sound/pci/ac97/ac97_proc.c:320)
[   34.002667][ T2693]  ? ___sys_sendmsg (net/socket.c:2758)
[   34.002671][ T2693]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   34.002673][ T2693]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   34.002675][ T2693]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   34.002677][ T2693]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   34.002679][ T2693]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   34.002680][ T2693]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   34.002681][ T2693]  ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22))
[   34.002684][ T2693]  ? __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)
[   34.002685][ T2693]  ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1))
[   34.002687][ T2693]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   34.002690][ T2693]  ? ww_mutex_lock (kernel/locking/mutex.c:934)
[   34.002694][ T2693]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   34.002696][ T2693]  ? __rtnl_newlink (net/core/rtnetlink.c:4063)
[   34.002701][ T2693]  rtnl_newlink (net/core/rtnetlink.c:4215)
[   34.002706][ T2693]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   34.002708][ T2693]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   34.002713][ T2693]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   34.002715][ T2693]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   34.002717][ T2693]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   34.002719][ T2693]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   34.002722][ T2693]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   34.002724][ T2693]  rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   34.002728][ T2693]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   34.002729][ T2693]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   34.002733][ T2693]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   34.002735][ T2693]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   34.002739][ T2693]  netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   34.002742][ T2693]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   34.002745][ T2693]  ? netlink_ack (./include/linux/skbuff.h:2718)
[   34.002751][ T2693]  ? 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))
[   34.002753][ T2693]  ? 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))
[   34.002757][ T2693]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   34.002762][ T2693]  ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   34.002764][ T2693]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   34.002768][ T2693]  netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   34.002772][ T2693]  ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7))
[   34.002776][ T2693]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   34.002778][ T2693]  ? __import_iovec (lib/iov_iter.c:1358 lib/iov_iter.c:1373)
[   34.002783][ T2693]  __sock_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4))
[   34.002786][ T2693]  ____sys_sendmsg (net/socket.c:2713)
[   34.002788][ T2693]  ? copy_msghdr_from_user (net/socket.c:2650)
[   34.002790][ T2693]  ? sock_write_iter (net/socket.c:1269)
[   34.002792][ T2693]  ? move_addr_to_kernel (net/socket.c:258)
[   34.002799][ T2693]  ___sys_sendmsg (net/socket.c:2767)
[   34.002802][ T2693]  ? copy_msghdr_from_user (net/socket.c:2619)
[   34.002818][ T2693]  __sys_sendmsg (net/socket.c:2799)
[   34.002821][ T2693]  ? __sys_sendmsg_sock (net/socket.c:2780)
[   34.002827][ T2693]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   34.002830][ T2693]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   34.002833][ T2693]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   34.002836][ T2693]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   34.002838][ T2693] RIP: 0033:0x7fc87c05354e
[   34.002840][ T2693] 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
[   34.002842][ T2693] RSP: 002b:00007ffeedfa2de0 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
[   34.002845][ T2693] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007fc87c05354e
[   34.002846][ T2693] RDX: 0000000000000000 RSI: 00007ffeedfa2e90 RDI: 0000000000000005
[   34.002847][ T2693] RBP: 00007ffeedfa2df0 R08: 0000000000000000 R09: 0000000000000000
[   34.002848][ T2693] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a90f4b1
[   34.002849][ T2693] R13: 00000000004a1620 R14: 0000000000000000 R15: 00007ffeedfa3550
| [   35.281260][ T2796] softirqs last disabled at (12042): __alloc_skb (./include/linux/bottom_half.h:20 (discriminator 2) net/core/skbuff.c:697 (discriminator 2))
| [   35.281262][ T2796] Preemption disabled at:
| [   35.281263][ T2796] vprintk_emit (kernel/printk/printk.c:2471)
| [   35.281271][ T2796] Tainted: [W]=WARN
[   35.281272][ T2796] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   35.281274][ T2796] Call Trace:
[   35.281276][ T2796]  <TASK>
[   35.281277][ T2796]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   35.281283][ T2796]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   35.281285][ T2796]  __might_resched.cold (kernel/sched/core.c:9234)
[   35.281290][ T2796]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   35.281294][ T2796]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   35.281298][ T2796]  __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))
[   35.281300][ T2796]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   35.281307][ T2796]  ? 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)
[   35.281309][ T2796]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   35.281313][ T2796]  put_chars (drivers/char/virtio_console.c:1176)
[   35.281315][ T2796]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   35.281318][ T2796]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   35.281323][ T2796]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   35.281331][ T2796]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   35.281334][ T2796]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   35.281336][ T2796]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   35.281340][ T2796]  console_emit_next_record (kernel/printk/printk.c:3183)
[   35.281344][ T2796]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   35.281346][ T2796]  ? 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))
[   35.281349][ T2796]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   35.281351][ T2796]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   35.281355][ T2796]  console_flush_one_record (kernel/printk/printk.c:3268)
[   35.281359][ T2796]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   35.281361][ T2796]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   35.281366][ T2796]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   35.281369][ T2796]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   35.281371][ T2796]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   35.281372][ T2796]  ? 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)
[   35.281376][ T2796]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   35.281378][ T2796]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   35.281381][ T2796]  vprintk_emit (kernel/printk/printk.c:2479)
[   35.281384][ T2796]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   35.281385][ T2796]  ? rtnl_newlink (net/core/rtnetlink.c:4215)
[   35.281387][ T2796]  ? netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   35.281390][ T2796]  ? netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   35.281391][ T2796]  ? netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   35.281393][ T2796]  ? __sock_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4))
[   35.281395][ T2796]  ? ____sys_sendmsg (net/socket.c:2713)
[   35.281397][ T2796]  ? ___sys_sendmsg (net/socket.c:2767)
[   35.281400][ T2796]  _printk (kernel/printk/printk.c:2504)
[   35.281403][ T2796]  ? snapshot_read.cold (user.c:?)
[   35.281408][ T2796]  ? netdev_name (./include/linux/netdevice.h:5709 (discriminator 1))
[   35.281411][ T2796]  ? __netdev_printk (net/core/dev.c:13148 (discriminator 2))
[   35.281417][ T2796]  netdev_info (net/core/dev.c:13195 (discriminator 3))
[   35.281420][ T2796]  ? netdev_notice (net/core/dev.c:13194)
[   35.281425][ T2796]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   35.281426][ T2796]  ? __up_read (kernel/locking/rwsem.c:1397 (discriminator 1))
[   35.281429][ T2796]  ? down_write_nested (kernel/locking/rwsem.c:1759)
[   35.281431][ T2796]  ? 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)
[   35.281433][ T2796]  netif_set_allmulti.cold (net/core/dev.c:9731 (discriminator 3))
[   35.281437][ T2796]  dev_set_allmulti (net/core/dev_api.c:315)
[   35.281441][ T2796]  del_nbp (net/bridge/br_if.c:253 net/bridge/br_if.c:341)
[   35.281447][ T2796]  br_del_if (net/bridge/br_if.c:732)
[   35.281449][ T2796]  ? rtnl_is_locked (net/core/rtnetlink.c:169)
[   35.281452][ T2796]  do_set_master (net/core/rtnetlink.c:3055)
[   35.281456][ T2796]  do_setlink.isra.0 (net/core/rtnetlink.c:3273 (discriminator 1))
[   35.281459][ T2796]  ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1))
[   35.281462][ T2796]  ? rtnl_link_get_size (net/core/rtnetlink.c:747)
[   35.281464][ T2796]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380)
[   35.281466][ T2796]  ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2))
[   35.281469][ T2796]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   35.281472][ T2796]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   35.281473][ T2796]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   35.281476][ T2796]  ? kasan_save_stack (mm/kasan/common.c:58)
[   35.281478][ T2796]  ? kasan_save_stack (mm/kasan/common.c:57)
[   35.281479][ T2796]  ? kasan_save_track (mm/kasan/common.c:78)
[   35.281480][ T2796]  ? __kasan_kmalloc (mm/kasan/common.c:398 mm/kasan/common.c:415)
[   35.281483][ T2796]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   35.281485][ T2796]  ? snd_ac97_proc_read_main (sound/pci/ac97/ac97_proc.c:320)
[   35.281487][ T2796]  ? ___sys_sendmsg (net/socket.c:2758)
[   35.281490][ T2796]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   35.281492][ T2796]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   35.281494][ T2796]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   35.281496][ T2796]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   35.281498][ T2796]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   35.281499][ T2796]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   35.281500][ T2796]  ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22))
[   35.281503][ T2796]  ? __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)
[   35.281505][ T2796]  ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1))
[   35.281507][ T2796]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   35.281510][ T2796]  ? ww_mutex_lock (kernel/locking/mutex.c:934)
[   35.281511][ T2796]  ? nla_get_range_signed (lib/nlattr.c:270)
[   35.281516][ T2796]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   35.281518][ T2796]  ? __rtnl_newlink (net/core/rtnetlink.c:4063)
[   35.281523][ T2796]  rtnl_newlink (net/core/rtnetlink.c:4215)
[   35.281528][ T2796]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   35.281530][ T2796]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   35.281535][ T2796]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   35.281537][ T2796]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   35.281539][ T2796]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   35.281540][ T2796]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   35.281544][ T2796]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   35.281546][ T2796]  rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   35.281549][ T2796]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   35.281550][ T2796]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   35.281555][ T2796]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   35.281557][ T2796]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   35.281560][ T2796]  netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   35.281562][ T2796]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   35.281565][ T2796]  ? netlink_ack (./include/linux/skbuff.h:2718)
[   35.281571][ T2796]  ? 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))
[   35.281573][ T2796]  ? 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))
[   35.281577][ T2796]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   35.281581][ T2796]  ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   35.281584][ T2796]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   35.281588][ T2796]  netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   35.281592][ T2796]  ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7))
[   35.281595][ T2796]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   35.281597][ T2796]  ? __import_iovec (lib/iov_iter.c:1358 lib/iov_iter.c:1373)
[   35.281602][ T2796]  __sock_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4))
[   35.281605][ T2796]  ____sys_sendmsg (net/socket.c:2713)
[   35.281607][ T2796]  ? copy_msghdr_from_user (net/socket.c:2650)
[   35.281609][ T2796]  ? sock_write_iter (net/socket.c:1269)
[   35.281611][ T2796]  ? move_addr_to_kernel (net/socket.c:258)
[   35.281618][ T2796]  ___sys_sendmsg (net/socket.c:2767)
[   35.281621][ T2796]  ? copy_msghdr_from_user (net/socket.c:2619)
[   35.281636][ T2796]  __sys_sendmsg (net/socket.c:2799)
[   35.281639][ T2796]  ? __sys_sendmsg_sock (net/socket.c:2780)
[   35.281645][ T2796]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   35.281648][ T2796]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   35.281651][ T2796]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   35.281654][ T2796]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   35.281656][ T2796] RIP: 0033:0x7f8ececb054e
[   35.281660][ T2796] 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
[   35.281662][ T2796] RSP: 002b:00007fff43117460 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
[   35.281664][ T2796] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f8ececb054e
[   35.281666][ T2796] RDX: 0000000000000000 RSI: 00007fff43117510 RDI: 0000000000000005
[   35.281667][ T2796] RBP: 00007fff43117470 R08: 0000000000000000 R09: 0000000000000000
[   35.281667][ T2796] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a90f4b2


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