======================================
| [   13.046695][  T226] softirqs last disabled at (21790): netif_change_name (./include/linux/spinlock.h:353 ./include/linux/seqlock.h:908 net/core/dev.c:1499)
| [   13.046698][  T226] Preemption disabled at:
| [   13.046699][  T226] vprintk_emit (kernel/printk/printk.c:2471)
| [   13.046708][  T226] Tainted: [W]=WARN
[   13.046709][  T226] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   13.046711][  T226] Call Trace:
[   13.046712][  T226]  <TASK>
[   13.046714][  T226]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   13.046720][  T226]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   13.046722][  T226]  __might_resched.cold (kernel/sched/core.c:9234)
[   13.046726][  T226]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   13.046731][  T226]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   13.046735][  T226]  __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))
[   13.046737][  T226]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   13.046744][  T226]  ? 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)
[   13.046747][  T226]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   13.046751][  T226]  put_chars (drivers/char/virtio_console.c:1176)
[   13.046753][  T226]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   13.046760][  T226]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   13.046767][  T226]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   13.046770][  T226]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   13.046775][  T226]  console_emit_next_record (kernel/printk/printk.c:3183)
[   13.046779][  T226]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   13.046781][  T226]  ? 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))
[   13.046784][  T226]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   13.046787][  T226]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   13.046791][  T226]  console_flush_one_record (kernel/printk/printk.c:3268)
[   13.046795][  T226]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   13.046797][  T226]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   13.046802][  T226]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   13.046805][  T226]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   13.046807][  T226]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   13.046809][  T226]  ? 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)
[   13.046812][  T226]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   13.046814][  T226]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   13.046817][  T226]  vprintk_emit (kernel/printk/printk.c:2479)
[   13.046820][  T226]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   13.046822][  T226]  ? save_trace (kernel/locking/lockdep.c:589)
[   13.046827][  T226]  _printk (kernel/printk/printk.c:2504)
[   13.046830][  T226]  ? snapshot_read.cold (user.c:?)
[   13.046833][  T226]  ? validate_chain (kernel/locking/lockdep.c:159 kernel/locking/lockdep.c:191 kernel/locking/lockdep.c:3928)
[   13.046836][  T226]  ? netdev_name (./include/linux/netdevice.h:5709 (discriminator 1))
[   13.046840][  T226]  ? __netdev_printk (net/core/dev.c:13148 (discriminator 2))
[   13.046843][  T226]  ? do_setlink.isra.0 (net/core/rtnetlink.c:3246)
[   13.046845][  T226]  netdev_info (net/core/dev.c:13195 (discriminator 3))
[   13.046848][  T226]  ? netdev_notice (net/core/dev.c:13194)
[   13.046850][  T226]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   13.046853][  T226]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   13.046856][  T226]  ? mark_held_locks (kernel/locking/lockdep.c:4341)
[   13.046860][  T226]  ? do_setlink.isra.0 (net/core/rtnetlink.c:3246)
[   13.046862][  T226]  netif_change_name.cold (net/core/dev.c:1507 (discriminator 3))
[   13.046864][  T226]  ? is_bpf_text_address (./include/linux/rcupdate.h:319 (discriminator 2) ./include/linux/rcupdate.h:880 (discriminator 2) kernel/bpf/core.c:751 (discriminator 2))
[   13.046869][  T226]  ? netdev_adjacent_rename_links (net/core/dev.c:9598)
[   13.046872][  T226]  ? __kernel_text_address (kernel/extable.c:79)
[   13.046875][  T226]  ? write_profile (profile.c:?)
[   13.046879][  T226]  ? __asan_memset (mm/kasan/shadow.c:84 (discriminator 1))
[   13.046885][  T226]  do_setlink.isra.0 (net/core/rtnetlink.c:3246)
[   13.046888][  T226]  ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1))
[   13.046890][  T226]  ? rtnl_link_get_size (net/core/rtnetlink.c:747)
[   13.046892][  T226]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380)
[   13.046894][  T226]  ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2))
[   13.046898][  T226]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   13.046900][  T226]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   13.046902][  T226]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   13.046904][  T226]  ? kasan_save_stack (mm/kasan/common.c:58)
[   13.046906][  T226]  ? kasan_save_stack (mm/kasan/common.c:57)
[   13.046908][  T226]  ? kasan_save_track (mm/kasan/common.c:78)
[   13.046909][  T226]  ? __kasan_kmalloc (mm/kasan/common.c:398 mm/kasan/common.c:415)
[   13.046911][  T226]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   13.046913][  T226]  ? snd_ac97_proc_read_main (sound/pci/ac97/ac97_proc.c:320)
[   13.046916][  T226]  ? ___sys_sendmsg (net/socket.c:2758)
[   13.046920][  T226]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   13.046922][  T226]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   13.046924][  T226]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   13.046926][  T226]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   13.046928][  T226]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   13.046929][  T226]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   13.046930][  T226]  ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22))
[   13.046933][  T226]  ? __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)
[   13.046935][  T226]  ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1))
[   13.046937][  T226]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   13.046941][  T226]  ? ww_mutex_lock (kernel/locking/mutex.c:934)
[   13.046942][  T226]  ? nla_get_range_signed (lib/nlattr.c:270)
[   13.046947][  T226]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   13.046949][  T226]  ? __rtnl_newlink (net/core/rtnetlink.c:4063)
[   13.046954][  T226]  rtnl_newlink (net/core/rtnetlink.c:4215)
[   13.046960][  T226]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   13.046962][  T226]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   13.046966][  T226]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   13.046968][  T226]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   13.046970][  T226]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   13.046972][  T226]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   13.046975][  T226]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   13.046977][  T226]  rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   13.046981][  T226]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   13.046982][  T226]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   13.046987][  T226]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   13.046988][  T226]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   13.046992][  T226]  netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   13.046995][  T226]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   13.046998][  T226]  ? netlink_ack (./include/linux/skbuff.h:2718)
[   13.047005][  T226]  ? 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))
[   13.047007][  T226]  ? 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))
[   13.047011][  T226]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   13.047015][  T226]  ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   13.047018][  T226]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   13.047022][  T226]  netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   13.047026][  T226]  ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7))
[   13.047030][  T226]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   13.047032][  T226]  ? __import_iovec (lib/iov_iter.c:1358 lib/iov_iter.c:1373)
[   13.047037][  T226]  __sock_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4))
[   13.047040][  T226]  ____sys_sendmsg (net/socket.c:2713)
[   13.047042][  T226]  ? copy_msghdr_from_user (net/socket.c:2650)
[   13.047044][  T226]  ? sock_write_iter (net/socket.c:1269)
[   13.047046][  T226]  ? move_addr_to_kernel (net/socket.c:258)
[   13.047053][  T226]  ___sys_sendmsg (net/socket.c:2767)
[   13.047056][  T226]  ? copy_msghdr_from_user (net/socket.c:2619)
[   13.047072][  T226]  __sys_sendmsg (net/socket.c:2799)
[   13.047075][  T226]  ? __sys_sendmsg_sock (net/socket.c:2780)
[   13.047081][  T226]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   13.047084][  T226]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   13.047087][  T226]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   13.047090][  T226]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   13.047092][  T226] RIP: 0033:0x7f5bc30a154e
[   13.047097][  T226] 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
[   13.047099][  T226] RSP: 002b:00007ffd6b788490 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
[   13.047101][  T226] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f5bc30a154e
[   13.047102][  T226] RDX: 0000000000000000 RSI: 00007ffd6b788540 RDI: 0000000000000005
[   13.047103][  T226] RBP: 00007ffd6b7884a0 R08: 0000000000000000 R09: 0000000000000000
[   13.047104][  T226] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a90e511
[   13.047105][  T226] R13: 00000000004a1620 R14: 0000000000000000 R15: 00007ffd6b788c10
| [   14.252879][  T271] softirqs last disabled at (24682): __alloc_skb (./include/linux/bottom_half.h:20 (discriminator 2) net/core/skbuff.c:697 (discriminator 2))
| [   14.252882][  T271] Preemption disabled at:
| [   14.252882][  T271] vprintk_emit (kernel/printk/printk.c:2471)
| [   14.252891][  T271] Tainted: [W]=WARN
[   14.252892][  T271] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   14.252894][  T271] Call Trace:
[   14.252896][  T271]  <TASK>
[   14.252897][  T271]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   14.252903][  T271]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   14.252905][  T271]  __might_resched.cold (kernel/sched/core.c:9234)
[   14.252910][  T271]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   14.252914][  T271]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   14.252919][  T271]  __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))
[   14.252920][  T271]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   14.252927][  T271]  ? 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)
[   14.252930][  T271]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   14.252934][  T271]  put_chars (drivers/char/virtio_console.c:1176)
[   14.252936][  T271]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   14.252938][  T271]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   14.252942][  T271]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   14.252947][  T271]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   14.252955][  T271]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   14.252958][  T271]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   14.252960][  T271]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   14.252964][  T271]  console_emit_next_record (kernel/printk/printk.c:3183)
[   14.252968][  T271]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   14.252970][  T271]  ? 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))
[   14.252973][  T271]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   14.252975][  T271]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   14.252979][  T271]  console_flush_one_record (kernel/printk/printk.c:3268)
[   14.252984][  T271]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   14.252986][  T271]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   14.252991][  T271]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   14.252994][  T271]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   14.252996][  T271]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   14.252998][  T271]  ? 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)
[   14.253002][  T271]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   14.253004][  T271]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   14.253006][  T271]  vprintk_emit (kernel/printk/printk.c:2479)
[   14.253010][  T271]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   14.253012][  T271]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   14.253014][  T271]  ? mark_held_locks (kernel/locking/lockdep.c:4341)
[   14.253018][  T271]  _printk (kernel/printk/printk.c:2504)
[   14.253022][  T271]  ? snapshot_read.cold (user.c:?)
[   14.253025][  T271]  ? br_multicast_flood (??:?)
[   14.253029][  T271]  ? do_setlink.isra.0 (net/core/rtnetlink.c:3273 (discriminator 1))
[   14.253030][  T271]  ? rtnl_newlink (net/core/rtnetlink.c:4215)
[   14.253031][  T271]  ? rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   14.253036][  T271]  br_set_state (net/bridge/br_stp.c:57 (discriminator 2))
[   14.253040][  T271]  br_init_port (net/bridge/br_stp_if.c:39)
[   14.253043][  T271]  new_nbp (net/bridge/br_if.c:449)
[   14.253046][  T271]  br_add_if (net/bridge/br_if.c:592)
[   14.253049][  T271]  ? is_bpf_text_address (./include/linux/rcupdate.h:882 kernel/bpf/core.c:751)
[   14.253052][  T271]  ? kernel_text_address (kernel/extable.c:125 kernel/extable.c:94)
[   14.253058][  T271]  do_set_master (net/core/rtnetlink.c:3071)
[   14.253062][  T271]  do_setlink.isra.0 (net/core/rtnetlink.c:3273 (discriminator 1))
[   14.253065][  T271]  ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1))
[   14.253069][  T271]  ? rtnl_link_get_size (net/core/rtnetlink.c:747)
[   14.253070][  T271]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380)
[   14.253073][  T271]  ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2))
[   14.253076][  T271]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   14.253078][  T271]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   14.253080][  T271]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   14.253082][  T271]  ? kasan_save_stack (mm/kasan/common.c:58)
[   14.253084][  T271]  ? kasan_save_stack (mm/kasan/common.c:57)
[   14.253086][  T271]  ? kasan_save_track (mm/kasan/common.c:78)
[   14.253087][  T271]  ? __kasan_kmalloc (mm/kasan/common.c:398 mm/kasan/common.c:415)
[   14.253089][  T271]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   14.253092][  T271]  ? snd_ac97_proc_read_main (sound/pci/ac97/ac97_proc.c:320)
[   14.253094][  T271]  ? ___sys_sendmsg (net/socket.c:2758)
[   14.253098][  T271]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   14.253100][  T271]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   14.253103][  T271]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   14.253104][  T271]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   14.253106][  T271]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   14.253107][  T271]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   14.253109][  T271]  ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22))
[   14.253112][  T271]  ? __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)
[   14.253114][  T271]  ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1))
[   14.253116][  T271]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   14.253119][  T271]  ? ww_mutex_lock (kernel/locking/mutex.c:934)
[   14.253121][  T271]  ? nla_get_range_signed (lib/nlattr.c:270)
[   14.253126][  T271]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   14.253128][  T271]  ? __rtnl_newlink (net/core/rtnetlink.c:4063)
[   14.253133][  T271]  rtnl_newlink (net/core/rtnetlink.c:4215)
[   14.253139][  T271]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   14.253141][  T271]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   14.253145][  T271]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   14.253147][  T271]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   14.253150][  T271]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   14.253152][  T271]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   14.253156][  T271]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   14.253158][  T271]  rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   14.253161][  T271]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   14.253162][  T271]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   14.253169][  T271]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   14.253171][  T271]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   14.253175][  T271]  netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   14.253178][  T271]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   14.253181][  T271]  ? netlink_ack (./include/linux/skbuff.h:2718)
[   14.253187][  T271]  ? 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))
[   14.253189][  T271]  ? 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))
[   14.253194][  T271]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   14.253198][  T271]  ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   14.253200][  T271]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   14.253205][  T271]  netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   14.253209][  T271]  ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7))
[   14.253213][  T271]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   14.253214][  T271]  ? __import_iovec (lib/iov_iter.c:1358 lib/iov_iter.c:1373)
[   14.253220][  T271]  __sock_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4))
[   14.253223][  T271]  ____sys_sendmsg (net/socket.c:2713)
[   14.253225][  T271]  ? copy_msghdr_from_user (net/socket.c:2650)
[   14.253227][  T271]  ? sock_write_iter (net/socket.c:1269)
[   14.253229][  T271]  ? move_addr_to_kernel (net/socket.c:258)
[   14.253236][  T271]  ___sys_sendmsg (net/socket.c:2767)
[   14.253239][  T271]  ? copy_msghdr_from_user (net/socket.c:2619)
[   14.253255][  T271]  __sys_sendmsg (net/socket.c:2799)
[   14.253258][  T271]  ? __sys_sendmsg_sock (net/socket.c:2780)
[   14.253265][  T271]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   14.253268][  T271]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   14.253271][  T271]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   14.253274][  T271]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   14.253276][  T271] RIP: 0033:0x7f6d546cb54e
[   14.253280][  T271] 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
[   14.253282][  T271] RSP: 002b:00007ffce558c690 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
[   14.253284][  T271] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f6d546cb54e
[   14.253286][  T271] RDX: 0000000000000000 RSI: 00007ffce558c740 RDI: 0000000000000005
[   14.253287][  T271] RBP: 00007ffce558c6a0 R08: 0000000000000000 R09: 0000000000000000
[   14.253287][  T271] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a90e512
[   14.253288][  T271] R13: 00000000004a1620 R14: 0000000000000000 R15: 00007ffce558ce10
| [   15.259252][  T305] softirqs last disabled at (19174): br_device_event (./include/linux/spinlock.h:353 net/bridge/br.c:109)
| [   15.259255][  T305] Preemption disabled at:
| [   15.259256][  T305] 0x0
| [   15.259269][  T305] Tainted: [W]=WARN
[   15.259270][  T305] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   15.259272][  T305] Call Trace:
[   15.259275][  T305]  <TASK>
[   15.259277][  T305]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   15.259285][  T305]  __might_resched.cold (kernel/sched/core.c:9234)
[   15.259292][  T305]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   15.259297][  T305]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   15.259304][  T305]  __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))
[   15.259307][  T305]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   15.259317][  T305]  ? 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)
[   15.259321][  T305]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   15.259327][  T305]  put_chars (drivers/char/virtio_console.c:1176)
[   15.259331][  T305]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   15.259343][  T305]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   15.259355][  T305]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   15.259360][  T305]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   15.259367][  T305]  console_emit_next_record (kernel/printk/printk.c:3183)
[   15.259374][  T305]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   15.259376][  T305]  ? 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))
[   15.259382][  T305]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   15.259386][  T305]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   15.259392][  T305]  console_flush_one_record (kernel/printk/printk.c:3268)
[   15.259400][  T305]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   15.259402][  T305]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   15.259412][  T305]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   15.259416][  T305]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   15.259419][  T305]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   15.259421][  T305]  ? 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)
[   15.259428][  T305]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   15.259431][  T305]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   15.259436][  T305]  vprintk_emit (kernel/printk/printk.c:2479)
[   15.259441][  T305]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   15.259443][  T305]  ? mark_held_locks (kernel/locking/lockdep.c:4341)
[   15.259447][  T305]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   15.259451][  T305]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   15.259463][  T305]  _printk (kernel/printk/printk.c:2504)
[   15.259468][  T305]  ? snapshot_read.cold (user.c:?)
[   15.259482][  T305]  br_set_state (net/bridge/br_stp.c:57 (discriminator 2))
[   15.259489][  T305]  br_stp_disable_port (net/bridge/br_stp_if.c:106)
[   15.259495][  T305]  br_device_event (net/bridge/br.c:111)
[   15.259498][  T305]  ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:211 (discriminator 1) kernel/locking/spinlock.c:221 (discriminator 1))
[   15.259503][  T305]  ? packet_sendmsg_spkt (af_packet.c:?)
[   15.259513][  T305]  notifier_call_chain (kernel/notifier.c:85)
[   15.259522][  T305]  __dev_notify_flags (net/core/dev.c:2313 net/core/dev.c:2327 net/core/dev.c:9855)
[   15.259529][  T305]  ? netif_change_name (net/core/dev.c:1517)
[   15.259536][  T305]  ? netif_set_allmulti (./include/net/netdev_lock.h:33)
[   15.259541][  T305]  ? __kernel_text_address (kernel/extable.c:79)
[   15.259544][  T305]  ? write_profile (profile.c:?)
[   15.259552][  T305]  netif_change_flags (net/core/dev.c:9882)
[   15.259558][  T305]  do_setlink.isra.0 (net/core/rtnetlink.c:3266 (discriminator 1))
[   15.259564][  T305]  ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1))
[   15.259568][  T305]  ? rtnl_link_get_size (net/core/rtnetlink.c:747)
[   15.259570][  T305]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380)
[   15.259572][  T305]  ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2))
[   15.259577][  T305]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   15.259581][  T305]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   15.259583][  T305]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   15.259588][  T305]  ? kasan_save_stack (mm/kasan/common.c:58)
[   15.259591][  T305]  ? kasan_save_stack (mm/kasan/common.c:57)
[   15.259593][  T305]  ? kasan_save_track (mm/kasan/common.c:78)
[   15.259595][  T305]  ? __kasan_kmalloc (mm/kasan/common.c:398 mm/kasan/common.c:415)
[   15.259599][  T305]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   15.259602][  T305]  ? snd_ac97_proc_read_main (sound/pci/ac97/ac97_proc.c:320)
[   15.259606][  T305]  ? ___sys_sendmsg (net/socket.c:2758)
[   15.259613][  T305]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   15.259616][  T305]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   15.259620][  T305]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   15.259623][  T305]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   15.259626][  T305]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   15.259628][  T305]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   15.259630][  T305]  ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22))
[   15.259634][  T305]  ? __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)
[   15.259637][  T305]  ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1))
[   15.259640][  T305]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   15.259646][  T305]  ? ww_mutex_lock (kernel/locking/mutex.c:934)
[   15.259653][  T305]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   15.259657][  T305]  ? __rtnl_newlink (net/core/rtnetlink.c:4063)
[   15.259666][  T305]  rtnl_newlink (net/core/rtnetlink.c:4215)
[   15.259676][  T305]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   15.259679][  T305]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   15.259687][  T305]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   15.259690][  T305]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   15.259693][  T305]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   15.259696][  T305]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   15.259702][  T305]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   15.259706][  T305]  rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   15.259712][  T305]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   15.259714][  T305]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   15.259724][  T305]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   15.259727][  T305]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   15.259733][  T305]  netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   15.259737][  T305]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   15.259742][  T305]  ? netlink_ack (./include/linux/skbuff.h:2718)
[   15.259754][  T305]  ? 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))
[   15.259756][  T305]  ? 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))
[   15.259764][  T305]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   15.259771][  T305]  ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   15.259775][  T305]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   15.259783][  T305]  netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   15.259790][  T305]  ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7))
[   15.259796][  T305]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   15.259799][  T305]  ? __import_iovec (lib/iov_iter.c:1358 lib/iov_iter.c:1373)
[   15.259807][  T305]  __sock_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4))
[   15.259812][  T305]  ____sys_sendmsg (net/socket.c:2713)
[   15.259815][  T305]  ? copy_msghdr_from_user (net/socket.c:2650)
[   15.259819][  T305]  ? sock_write_iter (net/socket.c:1269)
[   15.259821][  T305]  ? move_addr_to_kernel (net/socket.c:258)
[   15.259835][  T305]  ___sys_sendmsg (net/socket.c:2767)
[   15.259839][  T305]  ? copy_msghdr_from_user (net/socket.c:2619)
[   15.259870][  T305]  __sys_sendmsg (net/socket.c:2799)
[   15.259874][  T305]  ? __sys_sendmsg_sock (net/socket.c:2780)
[   15.259885][  T305]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   15.259890][  T305]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   15.259894][  T305]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   15.259898][  T305]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   15.259902][  T305] RIP: 0033:0x7fc5699f554e
[   15.259905][  T305] 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
[   15.259908][  T305] RSP: 002b:00007ffcf0453950 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
[   15.259911][  T305] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007fc5699f554e
[   15.259913][  T305] RDX: 0000000000000000 RSI: 00007ffcf0453a00 RDI: 0000000000000005
[   15.259914][  T305] RBP: 00007ffcf0453960 R08: 0000000000000000 R09: 0000000000000000
[   15.259916][  T305] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a90e513


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
netif_change_name:vprintk_emit:dump_stack_lvl:__kmalloc_noprof:put_chars