======================================
| [    9.868454][  T194] softirqs last disabled at (46417): __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767)
| [    9.868458][  T194] Preemption disabled at:
| [    9.868458][  T194] 0x0
| [    9.868471][  T194] Tainted: [W]=WARN
[    9.868472][  T194] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[    9.868475][  T194] Call Trace:
[    9.868477][  T194]  <TASK>
[    9.868479][  T194]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[    9.868487][  T194]  __might_resched.cold (kernel/sched/core.c:9234)
[    9.868493][  T194]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[    9.868499][  T194]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[    9.868506][  T194]  __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))
[    9.868510][  T194]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[    9.868519][  T194]  ? 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)
[    9.868522][  T194]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[    9.868527][  T194]  put_chars (drivers/char/virtio_console.c:1176)
[    9.868532][  T194]  ? __send_to_port (drivers/char/virtio_console.c:654)
[    9.868534][  T194]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[    9.868540][  T194]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[    9.868549][  T194]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[    9.868559][  T194]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[    9.868563][  T194]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[    9.868567][  T194]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[    9.868573][  T194]  console_emit_next_record (kernel/printk/printk.c:3183)
[    9.868579][  T194]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[    9.868582][  T194]  ? 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))
[    9.868587][  T194]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[    9.868591][  T194]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[    9.868597][  T194]  console_flush_one_record (kernel/printk/printk.c:3268)
[    9.868604][  T194]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[    9.868606][  T194]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[    9.868615][  T194]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[    9.868619][  T194]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[    9.868622][  T194]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[    9.868626][  T194]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[    9.868632][  T194]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[    9.868634][  T194]  ? vprintk_emit (kernel/printk/printk.c:2478)
[    9.868640][  T194]  vprintk_emit (kernel/printk/printk.c:2479)
[    9.868646][  T194]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[    9.868651][  T194]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[    9.868657][  T194]  _printk (kernel/printk/printk.c:2504)
[    9.868663][  T194]  ? snapshot_read.cold (user.c:?)
[    9.868667][  T194]  ? 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)
[    9.868671][  T194]  ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[    9.868677][  T194]  ? 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)
[    9.868681][  T194]  do_exit.cold (kernel/exit.c:889 (discriminator 4) kernel/exit.c:1043 (discriminator 4))
[    9.868686][  T194]  ? exit_notify (kernel/exit.c:780)
[    9.868690][  T194]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[    9.868695][  T194]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[    9.868702][  T194]  do_group_exit (kernel/exit.c:1151)
[    9.868706][  T194]  __x64_sys_exit_group (kernel/exit.c:1162 kernel/exit.c:1160 kernel/exit.c:1160)
[    9.868709][  T194]  x64_sys_call (./arch/x86/include/generated/asm/syscalls_64.h:232)
[    9.868713][  T194]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[    9.868717][  T194]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[    9.868721][  T194]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[    9.868725][  T194] RIP: 0033:0x7f47d870d1b8
[    9.868728][  T194] Code: Unable to access opcode bytes at 0x7f47d870d18e.

Code starting with the faulting instruction
===========================================
[    9.868730][  T194] RSP: 002b:00007ffe28e2c3e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
[    9.868734][  T194] RAX: ffffffffffffffda RBX: 00007f47d883df88 RCX: 00007f47d870d1b8
[    9.868736][  T194] RDX: 00007f47d8457fc8 RSI: fffffffffffffeb8 RDI: 0000000000000000
[    9.868738][  T194] RBP: 00007ffe28e2c440 R08: 0000000000000000 R09: 0000000000008010
[    9.868739][  T194] R10: 00007ffe28e2c200 R11: 0000000000000246 R12: 0000000000000001
[    9.868740][  T194] R13: 0000000000000000 R14: 00007f47d883c680 R15: 00007f47d883dfa0
| [   11.300224][  T255] softirqs last disabled at (13826): __alloc_skb (./include/linux/bottom_half.h:20 (discriminator 2) net/core/skbuff.c:697 (discriminator 2))
| [   11.300227][  T255] Preemption disabled at:
| [   11.300227][  T255] vprintk_emit (kernel/printk/printk.c:2471)
| [   11.300236][  T255] Tainted: [W]=WARN
[   11.300237][  T255] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   11.300239][  T255] Call Trace:
[   11.300240][  T255]  <TASK>
[   11.300242][  T255]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   11.300248][  T255]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   11.300250][  T255]  __might_resched.cold (kernel/sched/core.c:9234)
[   11.300255][  T255]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   11.300259][  T255]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   11.300264][  T255]  __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))
[   11.300266][  T255]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   11.300271][  T255]  ? 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)
[   11.300274][  T255]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   11.300277][  T255]  put_chars (drivers/char/virtio_console.c:1176)
[   11.300280][  T255]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   11.300284][  T255]  ? validate_chain (kernel/locking/lockdep.c:159 kernel/locking/lockdep.c:191 kernel/locking/lockdep.c:3928)
[   11.300287][  T255]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   11.300290][  T255]  ? mark_usage (kernel/locking/lockdep.c:4690)
[   11.300292][  T255]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   11.300293][  T255]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   11.300297][  T255]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   11.300299][  T255]  ? console_emit_next_record (kernel/printk/printk.c:3095 (discriminator 2) kernel/printk/printk.c:3182 (discriminator 2))
[   11.300302][  T255]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   11.300306][  T255]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   11.300310][  T255]  console_emit_next_record (kernel/printk/printk.c:3183)
[   11.300313][  T255]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   11.300315][  T255]  ? 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))
[   11.300318][  T255]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   11.300320][  T255]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   11.300324][  T255]  console_flush_one_record (kernel/printk/printk.c:3268)
[   11.300328][  T255]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   11.300330][  T255]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   11.300335][  T255]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   11.300337][  T255]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   11.300339][  T255]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   11.300341][  T255]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   11.300345][  T255]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   11.300346][  T255]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   11.300349][  T255]  vprintk_emit (kernel/printk/printk.c:2479)
[   11.300353][  T255]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   11.300355][  T255]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   11.300357][  T255]  ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:211 (discriminator 1) kernel/locking/spinlock.c:221 (discriminator 1))
[   11.300361][  T255]  ? mark_held_locks (kernel/locking/lockdep.c:4341)
[   11.300365][  T255]  _printk (kernel/printk/printk.c:2504)
[   11.300368][  T255]  ? snapshot_read.cold (user.c:?)
[   11.300372][  T255]  ? br_multicast_flood (??:?) bridge
[   11.300384][  T255]  ? do_setlink.isra.0 (net/core/rtnetlink.c:3273 (discriminator 1))
[   11.300385][  T255]  ? rtnl_newlink (net/core/rtnetlink.c:4215)
[   11.300386][  T255]  ? rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   11.300391][  T255] br_set_state (net/bridge/br_stp.c:57 (discriminator 2)) bridge
[   11.300400][  T255] br_init_port (net/bridge/br_stp_if.c:39) bridge
[   11.300409][  T255] new_nbp (net/bridge/br_if.c:449) bridge
[   11.300418][  T255] br_add_if (net/bridge/br_if.c:592) bridge
[   11.300425][  T255]  ? is_bpf_text_address (./include/linux/rcupdate.h:882 kernel/bpf/core.c:751)
[   11.300429][  T255]  ? kernel_text_address (kernel/extable.c:125 kernel/extable.c:94)
[   11.300432][  T255]  ? __kernel_text_address (kernel/extable.c:79)
[   11.300436][  T255]  do_set_master (net/core/rtnetlink.c:3071)
[   11.300440][  T255]  do_setlink.isra.0 (net/core/rtnetlink.c:3273 (discriminator 1))
[   11.300443][  T255]  ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1))
[   11.300446][  T255]  ? rtnl_link_get_size (net/core/rtnetlink.c:747)
[   11.300447][  T255]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380)
[   11.300450][  T255]  ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2))
[   11.300454][  T255]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   11.300456][  T255]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   11.300458][  T255]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   11.300460][  T255]  ? kasan_save_stack (mm/kasan/common.c:58)
[   11.300463][  T255]  ? kasan_save_stack (mm/kasan/common.c:57)
[   11.300465][  T255]  ? kasan_save_track (mm/kasan/common.c:78)
[   11.300467][  T255]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   11.300469][  T255]  ? netlink_seq_next (net/netlink/af_netlink.c:2685)
[   11.300472][  T255]  ? ___sys_sendmsg (net/socket.c:2757)
[   11.300476][  T255]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   11.300478][  T255]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   11.300481][  T255]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   11.300483][  T255]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   11.300484][  T255]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   11.300486][  T255]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   11.300488][  T255]  ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22))
[   11.300492][  T255]  ? __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)
[   11.300494][  T255]  ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1))
[   11.300496][  T255]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   11.300499][  T255]  ? ww_mutex_lock (kernel/locking/mutex.c:934)
[   11.300500][  T255]  ? nla_get_range_signed (lib/nlattr.c:270)
[   11.300505][  T255]  ? __rtnl_newlink (net/core/rtnetlink.c:4063)
[   11.300510][  T255]  rtnl_newlink (net/core/rtnetlink.c:4215)
[   11.300515][  T255]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   11.300517][  T255]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   11.300521][  T255]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   11.300523][  T255]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   11.300525][  T255]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   11.300527][  T255]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   11.300530][  T255]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   11.300532][  T255]  rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   11.300535][  T255]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   11.300536][  T255]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   11.300541][  T255]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   11.300542][  T255]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   11.300546][  T255]  netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   11.300548][  T255]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   11.300550][  T255]  ? netlink_ack (./include/linux/skbuff.h:2718)
[   11.300556][  T255]  ? 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))
[   11.300558][  T255]  ? 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))
[   11.300562][  T255]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   11.300565][  T255]  ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   11.300568][  T255]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   11.300572][  T255]  netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   11.300575][  T255]  ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7))
[   11.300579][  T255]  ? __might_fault (mm/memory.c:7482 (discriminator 5))
[   11.300584][  T255]  ____sys_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4) net/socket.c:2713 (discriminator 4))
[   11.300587][  T255]  ? copy_msghdr_from_user (net/socket.c:2650)
[   11.300589][  T255]  ? get_timestamp.constprop.0 (./include/linux/netdevice.h:5399)
[   11.300590][  T255]  ? move_addr_to_kernel (net/socket.c:258)
[   11.300597][  T255]  ___sys_sendmsg (net/socket.c:2767)
[   11.300600][  T255]  ? copy_msghdr_from_user (net/socket.c:2619)
[   11.300615][  T255]  __sys_sendmsg (net/socket.c:2799)
[   11.300618][  T255]  ? __sys_sendmsg_sock (net/socket.c:2780)
[   11.300624][  T255]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   11.300628][  T255]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   11.300630][  T255]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   11.300633][  T255]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   11.300635][  T255] RIP: 0033:0x7f3f592fe54e
[   11.300638][  T255] 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
[   11.300640][  T255] RSP: 002b:00007ffe59188270 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
[   11.300643][  T255] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007f3f592fe54e
[   11.300644][  T255] RDX: 0000000000000000 RSI: 00007ffe59188320 RDI: 0000000000000005
[   11.300645][  T255] RBP: 00007ffe59188280 R08: 0000000000000000 R09: 0000000000000000
[   11.300646][  T255] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a913987
[   11.300646][  T255] R13: 00000000004a1620 R14: 0000000000000000 R15: 00007ffe591889e0
| [   19.277511][  T324] softirqs last disabled at (18348): __alloc_skb (./include/linux/bottom_half.h:20 (discriminator 2) net/core/skbuff.c:697 (discriminator 2))
| [   19.277513][  T324] Preemption disabled at:
| [   19.277514][  T324] vprintk_emit (kernel/printk/printk.c:2471)
| [   19.277523][  T324] Tainted: [W]=WARN
[   19.277524][  T324] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   19.277526][  T324] Call Trace:
[   19.277527][  T324]  <TASK>
[   19.277529][  T324]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   19.277535][  T324]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   19.277537][  T324]  __might_resched.cold (kernel/sched/core.c:9234)
[   19.277542][  T324]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   19.277546][  T324]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   19.277551][  T324]  __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))
[   19.277554][  T324]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   19.277559][  T324]  ? 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)
[   19.277562][  T324]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   19.277565][  T324]  put_chars (drivers/char/virtio_console.c:1176)
[   19.277568][  T324]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   19.277570][  T324]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   19.277575][  T324]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   19.277580][  T324]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   19.277586][  T324]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   19.277588][  T324]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   19.277591][  T324]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   19.277595][  T324]  console_emit_next_record (kernel/printk/printk.c:3183)
[   19.277599][  T324]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   19.277601][  T324]  ? 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))
[   19.277604][  T324]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   19.277607][  T324]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   19.277611][  T324]  console_flush_one_record (kernel/printk/printk.c:3268)
[   19.277615][  T324]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   19.277617][  T324]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   19.277623][  T324]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   19.277626][  T324]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   19.277627][  T324]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   19.277630][  T324]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   19.277634][  T324]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   19.277635][  T324]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   19.277639][  T324]  vprintk_emit (kernel/printk/printk.c:2479)
[   19.277643][  T324]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   19.277645][  T324]  ? rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   19.277647][  T324]  ? netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   19.277650][  T324]  ? netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   19.277651][  T324]  ? ____sys_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4) net/socket.c:2713 (discriminator 4))
[   19.277654][  T324]  ? ___sys_sendmsg (net/socket.c:2767)
[   19.277655][  T324]  ? __sys_sendmsg (net/socket.c:2799)
[   19.277657][  T324]  ? do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   19.277662][  T324]  _printk (kernel/printk/printk.c:2504)
[   19.277666][  T324]  ? snapshot_read.cold (user.c:?)
[   19.277670][  T324]  ? netdev_name (./include/linux/netdevice.h:5709 (discriminator 1))
[   19.277674][  T324]  ? __netdev_printk (net/core/dev.c:13148 (discriminator 2))
[   19.277678][  T324]  netdev_info (net/core/dev.c:13195 (discriminator 3))
[   19.277680][  T324]  ? netdev_notice (net/core/dev.c:13194)
[   19.277684][  T324]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   19.277686][  T324]  ? __up_read (kernel/locking/rwsem.c:1397 (discriminator 1))
[   19.277689][  T324]  ? down_write_nested (kernel/locking/rwsem.c:1759)
[   19.277691][  T324]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   19.277693][  T324]  ? 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)
[   19.277697][  T324]  netif_set_allmulti.cold (net/core/dev.c:9731 (discriminator 3))
[   19.277701][  T324]  dev_set_allmulti (net/core/dev_api.c:315)
[   19.277705][  T324] del_nbp (net/bridge/br_if.c:253 net/bridge/br_if.c:341) bridge
[   19.277719][  T324]  ? is_bpf_text_address (./include/linux/rcupdate.h:882 kernel/bpf/core.c:751)
[   19.277725][  T324] br_del_if (net/bridge/br_if.c:732) bridge
[   19.277733][  T324]  ? rtnl_is_locked (net/core/rtnetlink.c:169)
[   19.277736][  T324]  do_set_master (net/core/rtnetlink.c:3055)
[   19.277740][  T324]  do_setlink.isra.0 (net/core/rtnetlink.c:3273 (discriminator 1))
[   19.277744][  T324]  ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1))
[   19.277747][  T324]  ? rtnl_link_get_size (net/core/rtnetlink.c:747)
[   19.277749][  T324]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380)
[   19.277751][  T324]  ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2))
[   19.277755][  T324]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   19.277758][  T324]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   19.277760][  T324]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   19.277762][  T324]  ? kasan_save_stack (mm/kasan/common.c:58)
[   19.277765][  T324]  ? kasan_save_stack (mm/kasan/common.c:57)
[   19.277767][  T324]  ? kasan_save_track (mm/kasan/common.c:78)
[   19.277770][  T324]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   19.277772][  T324]  ? netlink_seq_next (net/netlink/af_netlink.c:2685)
[   19.277773][  T324]  ? ___sys_sendmsg (net/socket.c:2757)
[   19.277777][  T324]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   19.277779][  T324]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   19.277782][  T324]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   19.277784][  T324]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   19.277786][  T324]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   19.277787][  T324]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   19.277790][  T324]  ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22))
[   19.277793][  T324]  ? __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)
[   19.277795][  T324]  ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1))
[   19.277797][  T324]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   19.277801][  T324]  ? ww_mutex_lock (kernel/locking/mutex.c:934)
[   19.277802][  T324]  ? nla_get_range_signed (lib/nlattr.c:270)
[   19.277807][  T324]  ? __rtnl_newlink (net/core/rtnetlink.c:4063)
[   19.277813][  T324]  rtnl_newlink (net/core/rtnetlink.c:4215)
[   19.277818][  T324]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   19.277820][  T324]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   19.277825][  T324]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   19.277826][  T324]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   19.277829][  T324]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   19.277831][  T324]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   19.277834][  T324]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   19.277836][  T324]  rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   19.277840][  T324]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   19.277841][  T324]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   19.277845][  T324]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   19.277847][  T324]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   19.277851][  T324]  netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   19.277853][  T324]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   19.277856][  T324]  ? netlink_ack (./include/linux/skbuff.h:2718)
[   19.277862][  T324]  ? 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))
[   19.277863][  T324]  ? 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))
[   19.277868][  T324]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   19.277871][  T324]  ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   19.277874][  T324]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   19.277878][  T324]  netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   19.277882][  T324]  ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7))
[   19.277886][  T324]  ? __might_fault (mm/memory.c:7482 (discriminator 5))
[   19.277891][  T324]  ____sys_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4) net/socket.c:2713 (discriminator 4))
[   19.277894][  T324]  ? copy_msghdr_from_user (net/socket.c:2650)
[   19.277896][  T324]  ? get_timestamp.constprop.0 (./include/linux/netdevice.h:5399)
[   19.277898][  T324]  ? move_addr_to_kernel (net/socket.c:258)
[   19.277905][  T324]  ___sys_sendmsg (net/socket.c:2767)
[   19.277908][  T324]  ? copy_msghdr_from_user (net/socket.c:2619)
[   19.277926][  T324]  __sys_sendmsg (net/socket.c:2799)
[   19.277929][  T324]  ? __sys_sendmsg_sock (net/socket.c:2780)
[   19.277935][  T324]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   19.277938][  T324]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   19.277940][  T324]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   19.277943][  T324]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   19.277946][  T324] RIP: 0033:0x7f34ace2f54e
[   19.277949][  T324] 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
[   19.277951][  T324] RSP: 002b:00007ffcc50d1e20 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
[   19.277954][  T324] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f34ace2f54e
[   19.277955][  T324] RDX: 0000000000000000 RSI: 00007ffcc50d1ed0 RDI: 0000000000000005
[   19.277956][  T324] RBP: 00007ffcc50d1e30 R08: 0000000000000000 R09: 0000000000000000
[   19.277957][  T324] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a91398f
[   19.277958][  T324] R13: 00000000004a1620 R14: 0000000000000000 R15: 00007ffcc50d2590
| [   21.399839][  T327] softirqs last disabled at (12394): __alloc_skb (./include/linux/bottom_half.h:20 (discriminator 2) net/core/skbuff.c:697 (discriminator 2))
| [   21.399841][  T327] Preemption disabled at:
| [   21.399842][  T327] vprintk_emit (kernel/printk/printk.c:2471)
| [   21.399851][  T327] Tainted: [W]=WARN
[   21.399852][  T327] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   21.399854][  T327] Call Trace:
[   21.399855][  T327]  <TASK>
[   21.399857][  T327]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   21.399863][  T327]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   21.399865][  T327]  __might_resched.cold (kernel/sched/core.c:9234)
[   21.399870][  T327]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   21.399874][  T327]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   21.399879][  T327]  __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))
[   21.399881][  T327]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   21.399887][  T327]  ? 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)
[   21.399889][  T327]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   21.399893][  T327]  put_chars (drivers/char/virtio_console.c:1176)
[   21.399895][  T327]  ? prb_final_commit (kernel/printk/printk_ringbuffer.c:1842)
[   21.399897][  T327]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   21.399900][  T327]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   21.399904][  T327]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   21.399907][  T327]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   21.399910][  T327]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   21.399913][  T327]  ? mark_usage (kernel/locking/lockdep.c:4690)
[   21.399917][  T327]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   21.399919][  T327]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   21.399923][  T327]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   21.399925][  T327]  ? console_emit_next_record (kernel/printk/printk.c:3095 (discriminator 2) kernel/printk/printk.c:3182 (discriminator 2))
[   21.399928][  T327]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   21.399931][  T327]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   21.399935][  T327]  console_emit_next_record (kernel/printk/printk.c:3183)
[   21.399939][  T327]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   21.399940][  T327]  ? 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))
[   21.399944][  T327]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   21.399946][  T327]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   21.399950][  T327]  console_flush_one_record (kernel/printk/printk.c:3268)
[   21.399954][  T327]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   21.399956][  T327]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   21.399962][  T327]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   21.399964][  T327]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   21.399966][  T327]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   21.399969][  T327]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   21.399972][  T327]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   21.399974][  T327]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   21.399978][  T327]  vprintk_emit (kernel/printk/printk.c:2479)
[   21.399982][  T327]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   21.399984][  T327]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   21.399987][  T327]  ? mark_held_locks (kernel/locking/lockdep.c:4341)
[   21.399990][  T327]  _printk (kernel/printk/printk.c:2504)
[   21.399994][  T327]  ? snapshot_read.cold (user.c:?)
[   21.399998][  T327]  ? br_multicast_flood (??:?) bridge
[   21.400011][  T327]  ? do_setlink.isra.0 (net/core/rtnetlink.c:3273 (discriminator 1))
[   21.400013][  T327]  ? rtnl_newlink (net/core/rtnetlink.c:4215)
[   21.400014][  T327]  ? rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   21.400018][  T327] br_set_state (net/bridge/br_stp.c:57 (discriminator 2)) bridge
[   21.400029][  T327] br_init_port (net/bridge/br_stp_if.c:39) bridge
[   21.400038][  T327] new_nbp (net/bridge/br_if.c:449) bridge
[   21.400047][  T327] br_add_if (net/bridge/br_if.c:592) bridge
[   21.400054][  T327]  ? is_bpf_text_address (./include/linux/rcupdate.h:882 kernel/bpf/core.c:751)
[   21.400058][  T327]  ? kernel_text_address (kernel/extable.c:125 kernel/extable.c:94)
[   21.400062][  T327]  ? __kernel_text_address (kernel/extable.c:79)
[   21.400065][  T327]  do_set_master (net/core/rtnetlink.c:3071)
[   21.400070][  T327]  do_setlink.isra.0 (net/core/rtnetlink.c:3273 (discriminator 1))
[   21.400073][  T327]  ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1))
[   21.400077][  T327]  ? rtnl_link_get_size (net/core/rtnetlink.c:747)
[   21.400078][  T327]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380)
[   21.400080][  T327]  ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2))
[   21.400083][  T327]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   21.400086][  T327]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   21.400088][  T327]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   21.400090][  T327]  ? kasan_save_stack (mm/kasan/common.c:58)
[   21.400093][  T327]  ? kasan_save_stack (mm/kasan/common.c:57)
[   21.400095][  T327]  ? kasan_save_track (mm/kasan/common.c:78)
[   21.400098][  T327]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   21.400100][  T327]  ? netlink_seq_next (net/netlink/af_netlink.c:2685)
[   21.400103][  T327]  ? ___sys_sendmsg (net/socket.c:2757)
[   21.400108][  T327]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   21.400110][  T327]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   21.400112][  T327]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   21.400115][  T327]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   21.400116][  T327]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   21.400118][  T327]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   21.400120][  T327]  ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22))
[   21.400124][  T327]  ? __mutex_lock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:3188 kernel/locking/mutex.c:89 kernel/locking/mutex.c:134 kernel/locking/mutex.c:649 kernel/locking/mutex.c:821)
[   21.400127][  T327]  ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1))
[   21.400129][  T327]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   21.400133][  T327]  ? ww_mutex_lock (kernel/locking/mutex.c:934)
[   21.400134][  T327]  ? nla_get_range_signed (lib/nlattr.c:270)
[   21.400139][  T327]  ? __rtnl_newlink (net/core/rtnetlink.c:4063)
[   21.400145][  T327]  rtnl_newlink (net/core/rtnetlink.c:4215)
[   21.400150][  T327]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   21.400152][  T327]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   21.400156][  T327]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   21.400158][  T327]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   21.400161][  T327]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   21.400162][  T327]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   21.400171][  T327]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   21.400173][  T327]  rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   21.400176][  T327]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   21.400178][  T327]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   21.400182][  T327]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   21.400184][  T327]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   21.400187][  T327]  netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   21.400189][  T327]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   21.400192][  T327]  ? netlink_ack (./include/linux/skbuff.h:2718)
[   21.400198][  T327]  ? netlink_deliver_tap (./include/linux/rcupdate.h:319 (discriminator 2) ./include/linux/rcupdate.h:880 (discriminator 2) ./include/net/netns/generic.h:48 (discriminator 2) net/netlink/af_netlink.c:334 (discriminator 2))
[   21.400200][  T327]  ? netlink_deliver_tap (./include/linux/rcupdate.h:319 (discriminator 2) ./include/linux/rcupdate.h:880 (discriminator 2) net/netlink/af_netlink.c:341 (discriminator 2))
[   21.400204][  T327]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   21.400208][  T327]  ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   21.400211][  T327]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   21.400215][  T327]  netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   21.400219][  T327]  ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7))
[   21.400223][  T327]  ? __might_fault (mm/memory.c:7482 (discriminator 5))
[   21.400228][  T327]  ____sys_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4) net/socket.c:2713 (discriminator 4))
[   21.400230][  T327]  ? copy_msghdr_from_user (net/socket.c:2650)
[   21.400233][  T327]  ? get_timestamp.constprop.0 (./include/linux/netdevice.h:5399)
[   21.400234][  T327]  ? move_addr_to_kernel (net/socket.c:258)
[   21.400242][  T327]  ___sys_sendmsg (net/socket.c:2767)
[   21.400245][  T327]  ? copy_msghdr_from_user (net/socket.c:2619)
[   21.400261][  T327]  __sys_sendmsg (net/socket.c:2799)
[   21.400263][  T327]  ? __sys_sendmsg_sock (net/socket.c:2780)
[   21.400270][  T327]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   21.400273][  T327]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   21.400276][  T327]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   21.400279][  T327]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   21.400282][  T327] RIP: 0033:0x7fb8ccbba54e
[   21.400285][  T327] Code: 4d 89 d8 e8 b4 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 03 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 b4 bd 00 00       	call   0xbdbc
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 03 ff ff ff       	call   0xffffffffffffff3c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 03 ff ff ff       	call   0xffffffffffffff12
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[   21.400287][  T327] RSP: 002b:00007ffdf669e670 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
[   21.400290][  T327] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007fb8ccbba54e
[   21.400291][  T327] RDX: 0000000000000000 RSI: 00007ffdf669e720 RDI: 0000000000000005
[   21.400292][  T327] RBP: 00007ffdf669e680 R08: 0000000000000000 R09: 0000000000000000
[   21.400293][  T327] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a913991
[   21.400294][  T327] R13: 00000000004a1620 R14: 0000000000000000 R15: 00007ffdf669ede0
| [   23.975576][  T375] softirqs last disabled at (25324): br_device_event (./include/linux/spinlock.h:353 net/bridge/br.c:109) bridge
| [   23.975584][  T375] Preemption disabled at:
| [   23.975584][  T375] 0x0
| [   23.975594][  T375] Tainted: [W]=WARN
[   23.975595][  T375] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   23.975597][  T375] Call Trace:
[   23.975598][  T375]  <TASK>
[   23.975600][  T375]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   23.975606][  T375]  __might_resched.cold (kernel/sched/core.c:9234)
[   23.975611][  T375]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   23.975615][  T375]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   23.975621][  T375]  __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))
[   23.975623][  T375]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   23.975629][  T375]  ? 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)
[   23.975631][  T375]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   23.975635][  T375]  put_chars (drivers/char/virtio_console.c:1176)
[   23.975638][  T375]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   23.975640][  T375]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   23.975644][  T375]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   23.975647][  T375]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   23.975651][  T375]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   23.975653][  T375]  ? mark_usage (kernel/locking/lockdep.c:4690)
[   23.975655][  T375]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   23.975657][  T375]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   23.975661][  T375]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   23.975662][  T375]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   23.975667][  T375]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   23.975671][  T375]  console_emit_next_record (kernel/printk/printk.c:3183)
[   23.975675][  T375]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   23.975676][  T375]  ? 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))
[   23.975680][  T375]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   23.975682][  T375]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   23.975686][  T375]  console_flush_one_record (kernel/printk/printk.c:3268)
[   23.975690][  T375]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   23.975692][  T375]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   23.975697][  T375]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   23.975700][  T375]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   23.975702][  T375]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   23.975704][  T375]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   23.975708][  T375]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   23.975710][  T375]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   23.975713][  T375]  vprintk_emit (kernel/printk/printk.c:2479)
[   23.975717][  T375]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   23.975719][  T375]  ? mark_held_locks (kernel/locking/lockdep.c:4341)
[   23.975721][  T375]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   23.975724][  T375]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   23.975727][  T375]  _printk (kernel/printk/printk.c:2504)
[   23.975731][  T375]  ? snapshot_read.cold (user.c:?)
[   23.975739][  T375] br_set_state (net/bridge/br_stp.c:57 (discriminator 2)) bridge
[   23.975750][  T375] br_stp_disable_port (net/bridge/br_stp_if.c:106) bridge
[   23.975759][  T375] br_device_event (net/bridge/br.c:111) bridge
[   23.975767][  T375]  ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:211 (discriminator 1) kernel/locking/spinlock.c:221 (discriminator 1))
[   23.975771][  T375]  ? _sub_I_65535_1+0x4d0/0x4d0 stp
[   23.975776][  T375]  notifier_call_chain (kernel/notifier.c:85)
[   23.975782][  T375]  __dev_notify_flags (net/core/dev.c:2313 net/core/dev.c:2327 net/core/dev.c:9855)
[   23.975787][  T375]  ? netif_change_name (net/core/dev.c:1517)
[   23.975791][  T375]  ? netif_set_allmulti (./include/net/netdev_lock.h:30 (discriminator 1))
[   23.975794][  T375]  ? __kernel_text_address (kernel/extable.c:79)
[   23.975796][  T375]  ? write_profile (profile.c:?)
[   23.975798][  T375]  ? unwind_get_return_address (arch/x86/kernel/unwind_orc.c:385 arch/x86/kernel/unwind_orc.c:380)
[   23.975803][  T375]  netif_change_flags (net/core/dev.c:9882)
[   23.975807][  T375]  do_setlink.isra.0 (net/core/rtnetlink.c:3266 (discriminator 1))
[   23.975810][  T375]  ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1))
[   23.975813][  T375]  ? rtnl_link_get_size (net/core/rtnetlink.c:747)
[   23.975814][  T375]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380)
[   23.975816][  T375]  ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2))
[   23.975819][  T375]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   23.975822][  T375]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   23.975824][  T375]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   23.975826][  T375]  ? kasan_save_stack (mm/kasan/common.c:58)
[   23.975829][  T375]  ? kasan_save_stack (mm/kasan/common.c:57)
[   23.975831][  T375]  ? kasan_save_track (mm/kasan/common.c:78)
[   23.975834][  T375]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   23.975836][  T375]  ? netlink_seq_next (net/netlink/af_netlink.c:2685)
[   23.975839][  T375]  ? ___sys_sendmsg (net/socket.c:2757)
[   23.975843][  T375]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   23.975845][  T375]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   23.975848][  T375]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   23.975850][  T375]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   23.975852][  T375]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   23.975853][  T375]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   23.975858][  T375]  ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22))
[   23.975862][  T375]  ? __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)
[   23.975864][  T375]  ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1))
[   23.975866][  T375]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   23.975870][  T375]  ? ww_mutex_lock (kernel/locking/mutex.c:934)
[   23.975871][  T375]  ? nla_get_range_signed (lib/nlattr.c:270)
[   23.975876][  T375]  ? __rtnl_newlink (net/core/rtnetlink.c:4063)
[   23.975881][  T375]  rtnl_newlink (net/core/rtnetlink.c:4215)
[   23.975887][  T375]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   23.975889][  T375]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   23.975893][  T375]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   23.975895][  T375]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   23.975897][  T375]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   23.975899][  T375]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   23.975903][  T375]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   23.975905][  T375]  rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   23.975908][  T375]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   23.975909][  T375]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   23.975914][  T375]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   23.975916][  T375]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   23.975919][  T375]  netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   23.975921][  T375]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   23.975924][  T375]  ? netlink_ack (./include/linux/skbuff.h:2718)
[   23.975930][  T375]  ? 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))
[   23.975932][  T375]  ? 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))
[   23.975936][  T375]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   23.975940][  T375]  ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   23.975942][  T375]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   23.975946][  T375]  netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   23.975950][  T375]  ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7))
[   23.975954][  T375]  ? __might_fault (mm/memory.c:7482 (discriminator 5))
[   23.975960][  T375]  ____sys_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4) net/socket.c:2713 (discriminator 4))
[   23.975962][  T375]  ? copy_msghdr_from_user (net/socket.c:2650)
[   23.975964][  T375]  ? get_timestamp.constprop.0 (./include/linux/netdevice.h:5399)
[   23.975966][  T375]  ? move_addr_to_kernel (net/socket.c:258)
[   23.975973][  T375]  ___sys_sendmsg (net/socket.c:2767)
[   23.975976][  T375]  ? copy_msghdr_from_user (net/socket.c:2619)
[   23.975992][  T375]  __sys_sendmsg (net/socket.c:2799)
[   23.975995][  T375]  ? __sys_sendmsg_sock (net/socket.c:2780)
[   23.976001][  T375]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   23.976005][  T375]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   23.976007][  T375]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   23.976010][  T375]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   23.976012][  T375] RIP: 0033:0x7f8d3216354e
[   23.976015][  T375] 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
[   23.976017][  T375] RSP: 002b:00007fff336729e0 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
[   23.976019][  T375] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007f8d3216354e
[   23.976021][  T375] RDX: 0000000000000000 RSI: 00007fff33672a90 RDI: 0000000000000005
[   23.976022][  T375] RBP: 00007fff336729f0 R08: 0000000000000000 R09: 0000000000000000
[   23.976022][  T375] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a913994


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