======================================
| [   10.916087][  T246] softirqs last disabled at (26664): netif_change_name (./include/linux/spinlock.h:353 ./include/linux/seqlock.h:908 net/core/dev.c:1499)
| [   10.916090][  T246] Preemption disabled at:
| [   10.916090][  T246] vprintk_emit (kernel/printk/printk.c:2471)
| [   10.916099][  T246] Tainted: [W]=WARN
[   10.916100][  T246] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   10.916101][  T246] Call Trace:
[   10.916103][  T246]  <TASK>
[   10.916104][  T246]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   10.916110][  T246]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   10.916112][  T246]  __might_resched.cold (kernel/sched/core.c:9234)
[   10.916116][  T246]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   10.916120][  T246]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   10.916124][  T246]  __kmalloc_noprof (./include/linux/sched/mm.h:322 (discriminator 2) mm/slub.c:4636 (discriminator 2) mm/slub.c:4974 (discriminator 2) mm/slub.c:5413 (discriminator 2) mm/slub.c:5439 (discriminator 2))
[   10.916126][  T246]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   10.916133][  T246]  ? do_raw_spin_unlock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:32 ./include/asm-generic/qspinlock.h:58 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141)
[   10.916136][  T246]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   10.916139][  T246]  put_chars (drivers/char/virtio_console.c:1176)
[   10.916142][  T246]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   10.916148][  T246]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   10.916155][  T246]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   10.916158][  T246]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   10.916163][  T246]  console_emit_next_record (kernel/printk/printk.c:3183)
[   10.916166][  T246]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   10.916168][  T246]  ? console_flush_one_record (./include/linux/rcupdate.h:314 (discriminator 2) ./include/linux/srcu.h:439 (discriminator 2) kernel/printk/printk.c:291 (discriminator 2) kernel/printk/printk.c:3246 (discriminator 2))
[   10.916171][  T246]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   10.916174][  T246]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   10.916178][  T246]  console_flush_one_record (kernel/printk/printk.c:3268)
[   10.916182][  T246]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   10.916186][  T246]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   10.916192][  T246]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   10.916194][  T246]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   10.916196][  T246]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   10.916198][  T246]  ? lock_acquire (./include/linux/srcutree.h:374 ./include/linux/srcu.h:541 ./include/linux/srcu.h:645 ./include/trace/events/lock.h:23 ./include/trace/events/lock.h:23 kernel/locking/lockdep.c:5871)
[   10.916202][  T246]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   10.916203][  T246]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   10.916206][  T246]  vprintk_emit (kernel/printk/printk.c:2479)
[   10.916209][  T246]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   10.916211][  T246]  ? save_trace (kernel/locking/lockdep.c:589)
[   10.916215][  T246]  _printk (kernel/printk/printk.c:2504)
[   10.916218][  T246]  ? snapshot_read.cold (user.c:?)
[   10.916222][  T246]  ? validate_chain (kernel/locking/lockdep.c:159 kernel/locking/lockdep.c:191 kernel/locking/lockdep.c:3928)
[   10.916224][  T246]  ? netdev_name (./include/linux/netdevice.h:5709 (discriminator 1))
[   10.916228][  T246]  ? __netdev_printk (net/core/dev.c:13148 (discriminator 2))
[   10.916235][  T246]  ? do_setlink.isra.0 (net/core/rtnetlink.c:3246)
[   10.916237][  T246]  netdev_info (net/core/dev.c:13195 (discriminator 3))
[   10.916240][  T246]  ? netdev_notice (net/core/dev.c:13194)
[   10.916242][  T246]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   10.916245][  T246]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   10.916248][  T246]  ? mark_held_locks (kernel/locking/lockdep.c:4341)
[   10.916251][  T246]  ? do_setlink.isra.0 (net/core/rtnetlink.c:3246)
[   10.916253][  T246]  netif_change_name.cold (net/core/dev.c:1507 (discriminator 3))
[   10.916255][  T246]  ? register_netdev (net/core/dev.c:11618)
[   10.916257][  T246]  ? 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))
[   10.916262][  T246]  ? netdev_adjacent_rename_links (net/core/dev.c:9598)
[   10.916264][  T246]  ? __kernel_text_address (kernel/extable.c:79)
[   10.916267][  T246]  ? write_profile (profile.c:?)
[   10.916271][  T246]  ? __asan_memset (mm/kasan/shadow.c:84 (discriminator 1))
[   10.916276][  T246]  do_setlink.isra.0 (net/core/rtnetlink.c:3246)
[   10.916280][  T246]  ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1))
[   10.916282][  T246]  ? rtnl_link_get_size (net/core/rtnetlink.c:747)
[   10.916283][  T246]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380)
[   10.916285][  T246]  ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2))
[   10.916289][  T246]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   10.916291][  T246]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   10.916293][  T246]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   10.916295][  T246]  ? kasan_save_stack (mm/kasan/common.c:58)
[   10.916297][  T246]  ? kasan_save_stack (mm/kasan/common.c:57)
[   10.916298][  T246]  ? kasan_save_track (mm/kasan/common.c:78)
[   10.916299][  T246]  ? __kasan_kmalloc (mm/kasan/common.c:398 mm/kasan/common.c:415)
[   10.916301][  T246]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   10.916303][  T246]  ? snd_ac97_proc_read_main (sound/pci/ac97/ac97_proc.c:320)
[   10.916306][  T246]  ? ___sys_sendmsg (net/socket.c:2758)
[   10.916310][  T246]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   10.916312][  T246]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   10.916315][  T246]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   10.916316][  T246]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   10.916318][  T246]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   10.916319][  T246]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   10.916321][  T246]  ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22))
[   10.916323][  T246]  ? __mutex_lock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:3188 kernel/locking/mutex.c:89 kernel/locking/mutex.c:134 kernel/locking/mutex.c:649 kernel/locking/mutex.c:821)
[   10.916326][  T246]  ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1))
[   10.916328][  T246]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   10.916331][  T246]  ? ww_mutex_lock (kernel/locking/mutex.c:934)
[   10.916332][  T246]  ? nla_get_range_signed (lib/nlattr.c:270)
[   10.916337][  T246]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   10.916339][  T246]  ? __rtnl_newlink (net/core/rtnetlink.c:4063)
[   10.916344][  T246]  rtnl_newlink (net/core/rtnetlink.c:4215)
[   10.916349][  T246]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   10.916351][  T246]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   10.916355][  T246]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   10.916357][  T246]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   10.916359][  T246]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   10.916361][  T246]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   10.916365][  T246]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   10.916367][  T246]  rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   10.916370][  T246]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   10.916371][  T246]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   10.916375][  T246]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   10.916377][  T246]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   10.916381][  T246]  netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   10.916384][  T246]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   10.916386][  T246]  ? netlink_ack (./include/linux/skbuff.h:2718)
[   10.916393][  T246]  ? netlink_deliver_tap (./include/linux/rcupdate.h:319 (discriminator 2) ./include/linux/rcupdate.h:880 (discriminator 2) ./include/net/netns/generic.h:48 (discriminator 2) net/netlink/af_netlink.c:334 (discriminator 2))
[   10.916395][  T246]  ? netlink_deliver_tap (./include/linux/rcupdate.h:319 (discriminator 2) ./include/linux/rcupdate.h:880 (discriminator 2) net/netlink/af_netlink.c:341 (discriminator 2))
[   10.916399][  T246]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   10.916403][  T246]  ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   10.916406][  T246]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   10.916410][  T246]  netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   10.916414][  T246]  ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7))
[   10.916417][  T246]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   10.916419][  T246]  ? __import_iovec (lib/iov_iter.c:1358 lib/iov_iter.c:1373)
[   10.916424][  T246]  __sock_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4))
[   10.916427][  T246]  ____sys_sendmsg (net/socket.c:2713)
[   10.916429][  T246]  ? copy_msghdr_from_user (net/socket.c:2650)
[   10.916432][  T246]  ? sock_write_iter (net/socket.c:1269)
[   10.916433][  T246]  ? move_addr_to_kernel (net/socket.c:258)
[   10.916440][  T246]  ___sys_sendmsg (net/socket.c:2767)
[   10.916443][  T246]  ? copy_msghdr_from_user (net/socket.c:2619)
[   10.916458][  T246]  __sys_sendmsg (net/socket.c:2799)
[   10.916461][  T246]  ? __sys_sendmsg_sock (net/socket.c:2780)
[   10.916467][  T246]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   10.916470][  T246]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   10.916473][  T246]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   10.916476][  T246]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   10.916478][  T246] RIP: 0033:0x7f6adbea054e
[   10.916482][  T246] Code: 4d 89 d8 e8 b4 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 03 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 b4 bd 00 00       	call   0xbdbc
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 03 ff ff ff       	call   0xffffffffffffff3c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 03 ff ff ff       	call   0xffffffffffffff12
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[   10.916483][  T246] RSP: 002b:00007ffeacaa3b20 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
[   10.916486][  T246] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f6adbea054e
[   10.916488][  T246] RDX: 0000000000000000 RSI: 00007ffeacaa3bd0 RDI: 0000000000000005
[   10.916489][  T246] RBP: 00007ffeacaa3b30 R08: 0000000000000000 R09: 0000000000000000
[   10.916489][  T246] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a914423
[   10.916490][  T246] R13: 00000000004a1620 R14: 0000000000000000 R15: 00007ffeacaa42a0
| [   13.174675][  T293] softirqs last disabled at (31086): addrconf_ifdown.isra.0 (net/ipv6/addrconf.c:3946)
| [   13.174677][  T293] Preemption disabled at:
| [   13.174678][  T293] vprintk_emit (kernel/printk/printk.c:2471)
| [   13.174686][  T293] Tainted: [W]=WARN
[   13.174687][  T293] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   13.174689][  T293] Call Trace:
[   13.174690][  T293]  <TASK>
[   13.174692][  T293]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   13.174697][  T293]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   13.174699][  T293]  __might_resched.cold (kernel/sched/core.c:9234)
[   13.174703][  T293]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   13.174708][  T293]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   13.174712][  T293]  __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))
[   13.174714][  T293]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   13.174720][  T293]  ? 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)
[   13.174723][  T293]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   13.174727][  T293]  put_chars (drivers/char/virtio_console.c:1176)
[   13.174729][  T293]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   13.174731][  T293]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   13.174734][  T293]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   13.174739][  T293]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   13.174747][  T293]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   13.174749][  T293]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   13.174751][  T293]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   13.174755][  T293]  console_emit_next_record (kernel/printk/printk.c:3183)
[   13.174759][  T293]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   13.174761][  T293]  ? 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))
[   13.174764][  T293]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   13.174766][  T293]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   13.174770][  T293]  console_flush_one_record (kernel/printk/printk.c:3268)
[   13.174774][  T293]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   13.174776][  T293]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   13.174781][  T293]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   13.174784][  T293]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   13.174786][  T293]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   13.174787][  T293]  ? 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)
[   13.174791][  T293]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   13.174793][  T293]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   13.174795][  T293]  vprintk_emit (kernel/printk/printk.c:2479)
[   13.174798][  T293]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   13.174800][  T293]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   13.174802][  T293]  ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:211 (discriminator 1) kernel/locking/spinlock.c:221 (discriminator 1))
[   13.174806][  T293]  ? mark_held_locks (kernel/locking/lockdep.c:4341)
[   13.174809][  T293]  _printk (kernel/printk/printk.c:2504)
[   13.174813][  T293]  ? snapshot_read.cold (user.c:?)
[   13.174816][  T293]  ? br_multicast_flood (??:?)
[   13.174819][  T293]  ? do_setlink.isra.0 (net/core/rtnetlink.c:3273 (discriminator 1))
[   13.174821][  T293]  ? rtnl_newlink (net/core/rtnetlink.c:4215)
[   13.174822][  T293]  ? rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   13.174826][  T293]  br_set_state (net/bridge/br_stp.c:57 (discriminator 2))
[   13.174830][  T293]  br_init_port (net/bridge/br_stp_if.c:39)
[   13.174833][  T293]  new_nbp (net/bridge/br_if.c:449)
[   13.174836][  T293]  br_add_if (net/bridge/br_if.c:592)
[   13.174839][  T293]  ? sync_rcu_exp_select_cpus (./include/linux/list.h:54 (discriminator 2))
[   13.174841][  T293]  ? __netdev_upper_dev_unlink (net/core/dev.c:9096)
[   13.174844][  T293]  ? kernel_text_address (kernel/extable.c:125 kernel/extable.c:94)
[   13.174848][  T293]  ? cycle_netdev (./include/linux/instrumented.h:82 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 ./include/linux/netdevice.h:4084 drivers/net/vrf.c:998)
[   13.174852][  T293]  ? vrf_del_slave (drivers/net/vrf.c:1068 drivers/net/vrf.c:1075)
[   13.174854][  T293]  do_set_master (net/core/rtnetlink.c:3071)
[   13.174858][  T293]  do_setlink.isra.0 (net/core/rtnetlink.c:3273 (discriminator 1))
[   13.174861][  T293]  ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1))
[   13.174864][  T293]  ? rtnl_link_get_size (net/core/rtnetlink.c:747)
[   13.174866][  T293]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380)
[   13.174868][  T293]  ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2))
[   13.174871][  T293]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   13.174873][  T293]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   13.174875][  T293]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   13.174878][  T293]  ? kasan_save_stack (mm/kasan/common.c:58)
[   13.174880][  T293]  ? kasan_save_stack (mm/kasan/common.c:57)
[   13.174881][  T293]  ? kasan_save_track (mm/kasan/common.c:78)
[   13.174882][  T293]  ? __kasan_kmalloc (mm/kasan/common.c:398 mm/kasan/common.c:415)
[   13.174885][  T293]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   13.174887][  T293]  ? snd_ac97_proc_read_main (sound/pci/ac97/ac97_proc.c:320)
[   13.174890][  T293]  ? ___sys_sendmsg (net/socket.c:2758)
[   13.174893][  T293]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   13.174895][  T293]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   13.174898][  T293]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   13.174900][  T293]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   13.174901][  T293]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   13.174902][  T293]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   13.174904][  T293]  ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22))
[   13.174906][  T293]  ? __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)
[   13.174908][  T293]  ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1))
[   13.174909][  T293]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   13.174913][  T293]  ? ww_mutex_lock (kernel/locking/mutex.c:934)
[   13.174914][  T293]  ? nla_get_range_signed (lib/nlattr.c:270)
[   13.174918][  T293]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   13.174921][  T293]  ? __rtnl_newlink (net/core/rtnetlink.c:4063)
[   13.174926][  T293]  rtnl_newlink (net/core/rtnetlink.c:4215)
[   13.174931][  T293]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   13.174933][  T293]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   13.174937][  T293]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   13.174939][  T293]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   13.174941][  T293]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   13.174943][  T293]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   13.174947][  T293]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   13.174949][  T293]  rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   13.174952][  T293]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   13.174953][  T293]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   13.174957][  T293]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   13.174959][  T293]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   13.174963][  T293]  netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   13.174966][  T293]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   13.174969][  T293]  ? netlink_ack (./include/linux/skbuff.h:2718)
[   13.174975][  T293]  ? 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))
[   13.174977][  T293]  ? 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))
[   13.174981][  T293]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   13.174985][  T293]  ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   13.174988][  T293]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   13.174992][  T293]  netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   13.174996][  T293]  ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7))
[   13.174999][  T293]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   13.175001][  T293]  ? __import_iovec (lib/iov_iter.c:1358 lib/iov_iter.c:1373)
[   13.175006][  T293]  __sock_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4))
[   13.175009][  T293]  ____sys_sendmsg (net/socket.c:2713)
[   13.175011][  T293]  ? copy_msghdr_from_user (net/socket.c:2650)
[   13.175013][  T293]  ? sock_write_iter (net/socket.c:1269)
[   13.175015][  T293]  ? move_addr_to_kernel (net/socket.c:258)
[   13.175022][  T293]  ___sys_sendmsg (net/socket.c:2767)
[   13.175025][  T293]  ? copy_msghdr_from_user (net/socket.c:2619)
[   13.175041][  T293]  __sys_sendmsg (net/socket.c:2799)
[   13.175043][  T293]  ? __sys_sendmsg_sock (net/socket.c:2780)
[   13.175049][  T293]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   13.175052][  T293]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   13.175055][  T293]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   13.175058][  T293]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   13.175060][  T293] RIP: 0033:0x7fd111a9754e
[   13.175064][  T293] 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
[   13.175066][  T293] RSP: 002b:00007ffce6754730 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
[   13.175069][  T293] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007fd111a9754e
[   13.175070][  T293] RDX: 0000000000000000 RSI: 00007ffce67547e0 RDI: 0000000000000005
[   13.175071][  T293] RBP: 00007ffce6754740 R08: 0000000000000000 R09: 0000000000000000
[   13.175072][  T293] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a914425
[   13.175073][  T293] R13: 00000000004a1620 R14: 0000000000000000 R15: 00007ffce6754ea0
| [   19.748722][  T340] softirqs last disabled at (34694): br_stp_disable_bridge (./include/linux/spinlock.h:353 net/bridge/br_stp_if.c:73)
| [   19.748724][  T340] Preemption disabled at:
| [   19.748724][  T340] 0x0
| [   19.748734][  T340] Tainted: [W]=WARN
[   19.748735][  T340] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   19.748737][  T340] Call Trace:
[   19.748738][  T340]  <TASK>
[   19.748740][  T340]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   19.748746][  T340]  __might_resched.cold (kernel/sched/core.c:9234)
[   19.748751][  T340]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   19.748755][  T340]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   19.748760][  T340]  __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))
[   19.748762][  T340]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   19.748768][  T340]  ? 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)
[   19.748771][  T340]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   19.748775][  T340]  put_chars (drivers/char/virtio_console.c:1176)
[   19.748776][  T340]  ? prb_final_commit (kernel/printk/printk_ringbuffer.c:1842)
[   19.748779][  T340]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   19.748781][  T340]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   19.748784][  T340]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   19.748787][  T340]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   19.748791][  T340]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   19.748795][  T340]  ? mark_usage (kernel/locking/lockdep.c:4690)
[   19.748797][  T340]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   19.748799][  T340]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   19.748803][  T340]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   19.748805][  T340]  ? console_emit_next_record (kernel/printk/printk.c:3095 (discriminator 2) kernel/printk/printk.c:3182 (discriminator 2))
[   19.748809][  T340]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   19.748811][  T340]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   19.748815][  T340]  console_emit_next_record (kernel/printk/printk.c:3183)
[   19.748819][  T340]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   19.748820][  T340]  ? 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))
[   19.748824][  T340]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   19.748825][  T340]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   19.748829][  T340]  console_flush_one_record (kernel/printk/printk.c:3268)
[   19.748833][  T340]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   19.748835][  T340]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   19.748840][  T340]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   19.748843][  T340]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   19.748845][  T340]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   19.748847][  T340]  ? lock_acquire (./include/linux/srcutree.h:374 ./include/linux/srcu.h:541 ./include/linux/srcu.h:645 ./include/trace/events/lock.h:23 ./include/trace/events/lock.h:23 kernel/locking/lockdep.c:5871)
[   19.748850][  T340]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   19.748852][  T340]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   19.748855][  T340]  vprintk_emit (kernel/printk/printk.c:2479)
[   19.748858][  T340]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   19.748860][  T340]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   19.748862][  T340]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   19.748866][  T340]  _printk (kernel/printk/printk.c:2504)
[   19.748869][  T340]  ? snapshot_read.cold (user.c:?)
[   19.748877][  T340]  br_set_state (net/bridge/br_stp.c:57 (discriminator 2))
[   19.748881][  T340]  br_stp_disable_port (net/bridge/br_stp_if.c:106)
[   19.748885][  T340]  br_stp_disable_bridge (net/bridge/br_stp_if.c:76)
[   19.748887][  T340]  br_dev_stop (net/bridge/br_device.c:193)
[   19.748890][  T340]  ? rtnl_is_locked (net/core/rtnetlink.c:169)
[   19.748893][  T340]  __dev_close_many (net/core/dev.c:1798)
[   19.748897][  T340]  ? netif_open (net/core/dev.c:1755)
[   19.748899][  T340]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   19.748901][  T340]  ? mark_held_locks (kernel/locking/lockdep.c:4341)
[   19.748906][  T340]  __dev_change_flags (net/core/dev.c:1811 net/core/dev.c:9810)
[   19.748909][  T340]  ? netif_set_allmulti (./include/net/netdev_lock.h:33)
[   19.748913][  T340]  ? synchronize_rcu_normal (kernel/rcu/tree.c:3360)
[   19.748917][  T340]  netif_change_flags (net/core/dev.c:9877)
[   19.748920][  T340]  dev_change_flags (net/core/dev_api.c:68)
[   19.748922][  T340]  ? kernel_text_address (kernel/extable.c:125 kernel/extable.c:94)
[   19.748926][  T340]  cycle_netdev (drivers/net/vrf.c:1001)
[   19.748931][  T340]  vrf_del_slave (drivers/net/vrf.c:1068 drivers/net/vrf.c:1075)
[   19.748933][  T340]  do_set_master (net/core/rtnetlink.c:3055)
[   19.748937][  T340]  do_setlink.isra.0 (net/core/rtnetlink.c:3273 (discriminator 1))
[   19.748940][  T340]  ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1))
[   19.748944][  T340]  ? rtnl_link_get_size (net/core/rtnetlink.c:747)
[   19.748945][  T340]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380)
[   19.748947][  T340]  ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2))
[   19.748950][  T340]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   19.748952][  T340]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   19.748954][  T340]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   19.748956][  T340]  ? kasan_save_stack (mm/kasan/common.c:58)
[   19.748959][  T340]  ? kasan_save_stack (mm/kasan/common.c:57)
[   19.748960][  T340]  ? kasan_save_track (mm/kasan/common.c:78)
[   19.748961][  T340]  ? __kasan_kmalloc (mm/kasan/common.c:398 mm/kasan/common.c:415)
[   19.748963][  T340]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   19.748965][  T340]  ? snd_ac97_proc_read_main (sound/pci/ac97/ac97_proc.c:320)
[   19.748968][  T340]  ? ___sys_sendmsg (net/socket.c:2758)
[   19.748972][  T340]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   19.748974][  T340]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   19.748977][  T340]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   19.748979][  T340]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   19.748980][  T340]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   19.748981][  T340]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   19.748983][  T340]  ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22))
[   19.748985][  T340]  ? __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)
[   19.748988][  T340]  ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1))
[   19.748990][  T340]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   19.748993][  T340]  ? ww_mutex_lock (kernel/locking/mutex.c:934)
[   19.748994][  T340]  ? nla_get_range_signed (lib/nlattr.c:270)
[   19.748999][  T340]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   19.749001][  T340]  ? __rtnl_newlink (net/core/rtnetlink.c:4063)
[   19.749007][  T340]  rtnl_newlink (net/core/rtnetlink.c:4215)
[   19.749012][  T340]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   19.749014][  T340]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   19.749018][  T340]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   19.749020][  T340]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   19.749022][  T340]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   19.749024][  T340]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   19.749028][  T340]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   19.749030][  T340]  rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   19.749033][  T340]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   19.749034][  T340]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   19.749039][  T340]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   19.749041][  T340]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   19.749044][  T340]  netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   19.749047][  T340]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   19.749050][  T340]  ? netlink_ack (./include/linux/skbuff.h:2718)
[   19.749056][  T340]  ? 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))
[   19.749058][  T340]  ? 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))
[   19.749063][  T340]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   19.749067][  T340]  ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   19.749069][  T340]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   19.749073][  T340]  netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   19.749077][  T340]  ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7))
[   19.749081][  T340]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   19.749083][  T340]  ? __import_iovec (lib/iov_iter.c:1358 lib/iov_iter.c:1373)
[   19.749088][  T340]  __sock_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4))
[   19.749091][  T340]  ____sys_sendmsg (net/socket.c:2713)
[   19.749093][  T340]  ? copy_msghdr_from_user (net/socket.c:2650)
[   19.749095][  T340]  ? sock_write_iter (net/socket.c:1269)
[   19.749097][  T340]  ? move_addr_to_kernel (net/socket.c:258)
[   19.749104][  T340]  ___sys_sendmsg (net/socket.c:2767)
[   19.749107][  T340]  ? copy_msghdr_from_user (net/socket.c:2619)
[   19.749123][  T340]  __sys_sendmsg (net/socket.c:2799)
[   19.749126][  T340]  ? __sys_sendmsg_sock (net/socket.c:2780)
[   19.749132][  T340]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   19.749135][  T340]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   19.749138][  T340]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   19.749141][  T340]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   19.749143][  T340] RIP: 0033:0x7f1cd1c5554e
[   19.749145][  T340] 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
[   19.749147][  T340] RSP: 002b:00007ffde250c810 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
[   19.749150][  T340] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f1cd1c5554e
[   19.749151][  T340] RDX: 0000000000000000 RSI: 00007ffde250c8c0 RDI: 0000000000000005
[   19.749152][  T340] RBP: 00007ffde250c820 R08: 0000000000000000 R09: 0000000000000000
[   19.749153][  T340] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a91442c
[   19.749154][  T340] R13: 00000000004a1620 R14: 0000000000000000 R15: 00007ffde250cf80
| [   22.584526][  T398] softirqs last disabled at (37934): __alloc_skb (./include/linux/bottom_half.h:20 (discriminator 2) net/core/skbuff.c:697 (discriminator 2))
| [   22.584528][  T398] Preemption disabled at:
| [   22.584529][  T398] vprintk_emit (kernel/printk/printk.c:2471)
| [   22.584537][  T398] Tainted: [W]=WARN
[   22.584538][  T398] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   22.584540][  T398] Call Trace:
[   22.584542][  T398]  <TASK>
[   22.584543][  T398]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   22.584549][  T398]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   22.584551][  T398]  __might_resched.cold (kernel/sched/core.c:9234)
[   22.584555][  T398]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   22.584559][  T398]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   22.584563][  T398]  __kmalloc_noprof (./include/linux/sched/mm.h:322 (discriminator 2) mm/slub.c:4636 (discriminator 2) mm/slub.c:4974 (discriminator 2) mm/slub.c:5413 (discriminator 2) mm/slub.c:5439 (discriminator 2))
[   22.584565][  T398]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   22.584572][  T398]  ? do_raw_spin_unlock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:32 ./include/asm-generic/qspinlock.h:58 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141)
[   22.584574][  T398]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   22.584578][  T398]  put_chars (drivers/char/virtio_console.c:1176)
[   22.584581][  T398]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   22.584587][  T398]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   22.584594][  T398]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   22.584598][  T398]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   22.584602][  T398]  console_emit_next_record (kernel/printk/printk.c:3183)
[   22.584606][  T398]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   22.584608][  T398]  ? console_flush_one_record (./include/linux/rcupdate.h:314 (discriminator 2) ./include/linux/srcu.h:439 (discriminator 2) kernel/printk/printk.c:291 (discriminator 2) kernel/printk/printk.c:3246 (discriminator 2))
[   22.584611][  T398]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   22.584614][  T398]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   22.584618][  T398]  console_flush_one_record (kernel/printk/printk.c:3268)
[   22.584622][  T398]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   22.584624][  T398]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   22.584629][  T398]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   22.584632][  T398]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   22.584634][  T398]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   22.584635][  T398]  ? lock_acquire (./include/linux/srcutree.h:374 ./include/linux/srcu.h:541 ./include/linux/srcu.h:645 ./include/trace/events/lock.h:23 ./include/trace/events/lock.h:23 kernel/locking/lockdep.c:5871)
[   22.584639][  T398]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   22.584641][  T398]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   22.584644][  T398]  vprintk_emit (kernel/printk/printk.c:2479)
[   22.584647][  T398]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   22.584648][  T398]  ? netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   22.584651][  T398]  ? netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   22.584653][  T398]  ? __sock_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4))
[   22.584656][  T398]  ? ____sys_sendmsg (net/socket.c:2713)
[   22.584657][  T398]  ? ___sys_sendmsg (net/socket.c:2767)
[   22.584659][  T398]  ? __sys_sendmsg (net/socket.c:2799)
[   22.584660][  T398]  ? do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   22.584666][  T398]  _printk (kernel/printk/printk.c:2504)
[   22.584670][  T398]  ? snapshot_read.cold (user.c:?)
[   22.584674][  T398]  ? netdev_name (./include/linux/netdevice.h:5709 (discriminator 1))
[   22.584678][  T398]  ? __netdev_printk (net/core/dev.c:13148 (discriminator 2))
[   22.584681][  T398]  netdev_info (net/core/dev.c:13195 (discriminator 3))
[   22.584684][  T398]  ? netdev_notice (net/core/dev.c:13194)
[   22.584689][  T398]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   22.584690][  T398]  ? __up_read (kernel/locking/rwsem.c:1397 (discriminator 1))
[   22.584693][  T398]  ? down_write_nested (kernel/locking/rwsem.c:1759)
[   22.584695][  T398]  ? 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)
[   22.584697][  T398]  netif_set_allmulti.cold (net/core/dev.c:9731 (discriminator 3))
[   22.584701][  T398]  dev_set_allmulti (net/core/dev_api.c:315)
[   22.584705][  T398]  del_nbp (net/bridge/br_if.c:253 net/bridge/br_if.c:341)
[   22.584708][  T398]  ? __asan_memset (mm/kasan/shadow.c:84 (discriminator 1))
[   22.584714][  T398]  br_dev_delete (net/bridge/br_if.c:387)
[   22.584717][  T398]  rtnl_dellink (net/core/rtnetlink.c:3651 net/core/rtnetlink.c:3694)
[   22.584719][  T398]  ? mark_usage (kernel/locking/lockdep.c:4690)
[   22.584721][  T398]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   22.584723][  T398]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   22.584725][  T398]  ? rtnl_link_get_net_capable.constprop.0 (net/core/rtnetlink.c:2728)
[   22.584746][  T398]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   22.584748][  T398]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   22.584751][  T398]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   22.584753][  T398]  ? mark_usage (kernel/locking/lockdep.c:4690)
[   22.584755][  T398]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   22.584760][  T398]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   22.584762][  T398]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   22.584764][  T398]  ? rtnl_link_get_net_capable.constprop.0 (net/core/rtnetlink.c:2728)
[   22.584765][  T398]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   22.584769][  T398]  ? rtnl_link_get_net_capable.constprop.0 (net/core/rtnetlink.c:2728)
[   22.584771][  T398]  rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   22.584774][  T398]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   22.584776][  T398]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   22.584780][  T398]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   22.584782][  T398]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   22.584785][  T398]  netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   22.584787][  T398]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   22.584790][  T398]  ? netlink_ack (./include/linux/skbuff.h:2718)
[   22.584797][  T398]  ? netlink_deliver_tap (./include/linux/rcupdate.h:319 (discriminator 2) ./include/linux/rcupdate.h:880 (discriminator 2) ./include/net/netns/generic.h:48 (discriminator 2) net/netlink/af_netlink.c:334 (discriminator 2))
[   22.584799][  T398]  ? netlink_deliver_tap (./include/linux/rcupdate.h:319 (discriminator 2) ./include/linux/rcupdate.h:880 (discriminator 2) net/netlink/af_netlink.c:341 (discriminator 2))
[   22.584804][  T398]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   22.584808][  T398]  ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   22.584810][  T398]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   22.584815][  T398]  netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   22.584818][  T398]  ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7))
[   22.584822][  T398]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   22.584824][  T398]  ? __import_iovec (lib/iov_iter.c:1358 lib/iov_iter.c:1373)
[   22.584829][  T398]  __sock_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4))
[   22.584832][  T398]  ____sys_sendmsg (net/socket.c:2713)
[   22.584834][  T398]  ? copy_msghdr_from_user (net/socket.c:2650)
[   22.584837][  T398]  ? sock_write_iter (net/socket.c:1269)
[   22.584838][  T398]  ? move_addr_to_kernel (net/socket.c:258)
[   22.584846][  T398]  ___sys_sendmsg (net/socket.c:2767)
[   22.584848][  T398]  ? copy_msghdr_from_user (net/socket.c:2619)
[   22.584865][  T398]  __sys_sendmsg (net/socket.c:2799)
[   22.584867][  T398]  ? __sys_sendmsg_sock (net/socket.c:2780)
[   22.584874][  T398]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   22.584877][  T398]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   22.584879][  T398]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   22.584881][  T398]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   22.584884][  T398] RIP: 0033:0x7f7951a8954e
[   22.584887][  T398] Code: 4d 89 d8 e8 b4 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 03 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 b4 bd 00 00       	call   0xbdbc
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 03 ff ff ff       	call   0xffffffffffffff3c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 03 ff ff ff       	call   0xffffffffffffff12
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[   22.584889][  T398] RSP: 002b:00007ffe74902120 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
[   22.584892][  T398] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f7951a8954e
[   22.584893][  T398] RDX: 0000000000000000 RSI: 00007ffe749021d0 RDI: 0000000000000005
[   22.584894][  T398] RBP: 00007ffe74902130 R08: 0000000000000000 R09: 0000000000000000
[   22.584895][  T398] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a91442e
[   22.584896][  T398] R13: 00000000004a1620 R14: 0000000000000000 R15: 00007ffe74902890
| [   25.124981][  T487] softirqs last disabled at (34354): netif_change_name (./include/linux/spinlock.h:353 ./include/linux/seqlock.h:908 net/core/dev.c:1499)
| [   25.124983][  T487] Preemption disabled at:
| [   25.124984][  T487] vprintk_emit (kernel/printk/printk.c:2471)
| [   25.124992][  T487] Tainted: [W]=WARN
[   25.124993][  T487] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   25.124995][  T487] Call Trace:
[   25.124997][  T487]  <TASK>
[   25.124998][  T487]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   25.125004][  T487]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   25.125006][  T487]  __might_resched.cold (kernel/sched/core.c:9234)
[   25.125010][  T487]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   25.125014][  T487]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   25.125019][  T487]  __kmalloc_noprof (./include/linux/sched/mm.h:322 (discriminator 2) mm/slub.c:4636 (discriminator 2) mm/slub.c:4974 (discriminator 2) mm/slub.c:5413 (discriminator 2) mm/slub.c:5439 (discriminator 2))
[   25.125021][  T487]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   25.125027][  T487]  ? do_raw_spin_unlock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:32 ./include/asm-generic/qspinlock.h:58 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141)
[   25.125030][  T487]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   25.125034][  T487]  put_chars (drivers/char/virtio_console.c:1176)
[   25.125036][  T487]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   25.125042][  T487]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   25.125049][  T487]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   25.125052][  T487]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   25.125057][  T487]  console_emit_next_record (kernel/printk/printk.c:3183)
[   25.125061][  T487]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   25.125063][  T487]  ? console_flush_one_record (./include/linux/rcupdate.h:314 (discriminator 2) ./include/linux/srcu.h:439 (discriminator 2) kernel/printk/printk.c:291 (discriminator 2) kernel/printk/printk.c:3246 (discriminator 2))
[   25.125066][  T487]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   25.125068][  T487]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   25.125072][  T487]  console_flush_one_record (kernel/printk/printk.c:3268)
[   25.125076][  T487]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   25.125078][  T487]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   25.125084][  T487]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   25.125086][  T487]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   25.125088][  T487]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   25.125090][  T487]  ? lock_acquire (./include/linux/srcutree.h:374 ./include/linux/srcu.h:541 ./include/linux/srcu.h:645 ./include/trace/events/lock.h:23 ./include/trace/events/lock.h:23 kernel/locking/lockdep.c:5871)
[   25.125093][  T487]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   25.125095][  T487]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   25.125098][  T487]  vprintk_emit (kernel/printk/printk.c:2479)
[   25.125101][  T487]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   25.125103][  T487]  ? _mutex_trylock_nest_lock (kernel/locking/mutex.c:1227 (discriminator 6))
[   25.125108][  T487]  _printk (kernel/printk/printk.c:2504)
[   25.125112][  T487]  ? snapshot_read.cold (user.c:?)
[   25.125114][  T487]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   25.125116][  T487]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   25.125119][  T487]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   25.125121][  T487]  ? netdev_name (./include/linux/netdevice.h:5709 (discriminator 1))
[   25.125125][  T487]  ? __netdev_printk (net/core/dev.c:13148 (discriminator 2))
[   25.125127][  T487]  ? do_setlink.isra.0 (net/core/rtnetlink.c:3246)
[   25.125130][  T487]  netdev_info (net/core/dev.c:13195 (discriminator 3))
[   25.125132][  T487]  ? netdev_notice (net/core/dev.c:13194)
[   25.125135][  T487]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   25.125138][  T487]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   25.125141][  T487]  ? mark_held_locks (kernel/locking/lockdep.c:4341)
[   25.125144][  T487]  ? do_setlink.isra.0 (net/core/rtnetlink.c:3246)
[   25.125146][  T487]  netif_change_name.cold (net/core/dev.c:1507 (discriminator 3))
[   25.125148][  T487]  ? register_netdev (net/core/dev.c:11618)
[   25.125150][  T487]  ? 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))
[   25.125155][  T487]  ? netdev_adjacent_rename_links (net/core/dev.c:9598)
[   25.125157][  T487]  ? __kernel_text_address (kernel/extable.c:79)
[   25.125160][  T487]  ? write_profile (profile.c:?)
[   25.125164][  T487]  ? __asan_memset (mm/kasan/shadow.c:84 (discriminator 1))
[   25.125169][  T487]  do_setlink.isra.0 (net/core/rtnetlink.c:3246)
[   25.125173][  T487]  ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1))
[   25.125175][  T487]  ? rtnl_link_get_size (net/core/rtnetlink.c:747)
[   25.125176][  T487]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380)
[   25.125178][  T487]  ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2))
[   25.125181][  T487]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   25.125183][  T487]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   25.125187][  T487]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   25.125190][  T487]  ? kasan_save_stack (mm/kasan/common.c:58)
[   25.125192][  T487]  ? kasan_save_stack (mm/kasan/common.c:57)
[   25.125193][  T487]  ? kasan_save_track (mm/kasan/common.c:78)
[   25.125194][  T487]  ? __kasan_kmalloc (mm/kasan/common.c:398 mm/kasan/common.c:415)
[   25.125196][  T487]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   25.125198][  T487]  ? snd_ac97_proc_read_main (sound/pci/ac97/ac97_proc.c:320)
[   25.125201][  T487]  ? ___sys_sendmsg (net/socket.c:2758)
[   25.125205][  T487]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   25.125207][  T487]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   25.125209][  T487]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   25.125211][  T487]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   25.125213][  T487]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   25.125214][  T487]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   25.125215][  T487]  ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22))
[   25.125218][  T487]  ? __mutex_lock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:3188 kernel/locking/mutex.c:89 kernel/locking/mutex.c:134 kernel/locking/mutex.c:649 kernel/locking/mutex.c:821)
[   25.125219][  T487]  ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1))
[   25.125221][  T487]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   25.125224][  T487]  ? ww_mutex_lock (kernel/locking/mutex.c:934)
[   25.125225][  T487]  ? nla_get_range_signed (lib/nlattr.c:270)
[   25.125230][  T487]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   25.125232][  T487]  ? __rtnl_newlink (net/core/rtnetlink.c:4063)
[   25.125237][  T487]  rtnl_newlink (net/core/rtnetlink.c:4215)
[   25.125242][  T487]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   25.125244][  T487]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   25.125249][  T487]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   25.125251][  T487]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   25.125252][  T487]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   25.125254][  T487]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   25.125258][  T487]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   25.125260][  T487]  rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   25.125263][  T487]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   25.125264][  T487]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   25.125269][  T487]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   25.125271][  T487]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   25.125274][  T487]  netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   25.125277][  T487]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   25.125280][  T487]  ? netlink_ack (./include/linux/skbuff.h:2718)
[   25.125286][  T487]  ? netlink_deliver_tap (./include/linux/rcupdate.h:319 (discriminator 2) ./include/linux/rcupdate.h:880 (discriminator 2) ./include/net/netns/generic.h:48 (discriminator 2) net/netlink/af_netlink.c:334 (discriminator 2))
[   25.125288][  T487]  ? netlink_deliver_tap (./include/linux/rcupdate.h:319 (discriminator 2) ./include/linux/rcupdate.h:880 (discriminator 2) net/netlink/af_netlink.c:341 (discriminator 2))
[   25.125292][  T487]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   25.125296][  T487]  ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   25.125302][  T487]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   25.125306][  T487]  netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   25.125310][  T487]  ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7))
[   25.125313][  T487]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   25.125315][  T487]  ? __import_iovec (lib/iov_iter.c:1358 lib/iov_iter.c:1373)
[   25.125320][  T487]  __sock_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4))
[   25.125323][  T487]  ____sys_sendmsg (net/socket.c:2713)
[   25.125325][  T487]  ? copy_msghdr_from_user (net/socket.c:2650)
[   25.125327][  T487]  ? sock_write_iter (net/socket.c:1269)
[   25.125329][  T487]  ? move_addr_to_kernel (net/socket.c:258)
[   25.125336][  T487]  ___sys_sendmsg (net/socket.c:2767)
[   25.125339][  T487]  ? copy_msghdr_from_user (net/socket.c:2619)
[   25.125354][  T487]  __sys_sendmsg (net/socket.c:2799)
[   25.125357][  T487]  ? __sys_sendmsg_sock (net/socket.c:2780)
[   25.125363][  T487]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   25.125366][  T487]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   25.125369][  T487]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   25.125372][  T487]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   25.125374][  T487] RIP: 0033:0x7f23d2a0d54e
[   25.125378][  T487] Code: 4d 89 d8 e8 b4 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 03 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 b4 bd 00 00       	call   0xbdbc
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 03 ff ff ff       	call   0xffffffffffffff3c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 03 ff ff ff       	call   0xffffffffffffff12
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[   25.125380][  T487] RSP: 002b:00007ffe1b189860 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
[   25.125382][  T487] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f23d2a0d54e
[   25.125384][  T487] RDX: 0000000000000000 RSI: 00007ffe1b189910 RDI: 0000000000000005
[   25.125385][  T487] RBP: 00007ffe1b189870 R08: 0000000000000000 R09: 0000000000000000
[   25.125386][  T487] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a914431
[   25.125387][  T487] R13: 00000000004a1620 R14: 0000000000000000 R15: 00007ffe1b189fe0
| [   33.463765][  T678] softirqs last disabled at (26632): netif_change_name (./include/linux/spinlock.h:353 ./include/linux/seqlock.h:908 net/core/dev.c:1499)
| [   33.463768][  T678] Preemption disabled at:
| [   33.463768][  T678] vprintk_emit (kernel/printk/printk.c:2471)
| [   33.463776][  T678] Tainted: [W]=WARN
[   33.463777][  T678] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   33.463779][  T678] Call Trace:
[   33.463780][  T678]  <TASK>
[   33.463782][  T678]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   33.463787][  T678]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   33.463789][  T678]  __might_resched.cold (kernel/sched/core.c:9234)
[   33.463794][  T678]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   33.463798][  T678]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   33.463802][  T678]  __kmalloc_noprof (./include/linux/sched/mm.h:322 (discriminator 2) mm/slub.c:4636 (discriminator 2) mm/slub.c:4974 (discriminator 2) mm/slub.c:5413 (discriminator 2) mm/slub.c:5439 (discriminator 2))
[   33.463804][  T678]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   33.463811][  T678]  ? do_raw_spin_unlock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:32 ./include/asm-generic/qspinlock.h:58 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141)
[   33.463814][  T678]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   33.463817][  T678]  put_chars (drivers/char/virtio_console.c:1176)
[   33.463820][  T678]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   33.463826][  T678]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   33.463834][  T678]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   33.463837][  T678]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   33.463841][  T678]  console_emit_next_record (kernel/printk/printk.c:3183)
[   33.463846][  T678]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   33.463847][  T678]  ? console_flush_one_record (./include/linux/rcupdate.h:314 (discriminator 2) ./include/linux/srcu.h:439 (discriminator 2) kernel/printk/printk.c:291 (discriminator 2) kernel/printk/printk.c:3246 (discriminator 2))
[   33.463851][  T678]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   33.463853][  T678]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   33.463857][  T678]  console_flush_one_record (kernel/printk/printk.c:3268)
[   33.463861][  T678]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   33.463863][  T678]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   33.463869][  T678]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   33.463871][  T678]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   33.463873][  T678]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   33.463875][  T678]  ? lock_acquire (./include/linux/srcutree.h:374 ./include/linux/srcu.h:541 ./include/linux/srcu.h:645 ./include/trace/events/lock.h:23 ./include/trace/events/lock.h:23 kernel/locking/lockdep.c:5871)
[   33.463879][  T678]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   33.463881][  T678]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   33.463883][  T678]  vprintk_emit (kernel/printk/printk.c:2479)
[   33.463886][  T678]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   33.463889][  T678]  ? _mutex_trylock_nest_lock (kernel/locking/mutex.c:1227 (discriminator 6))
[   33.463894][  T678]  _printk (kernel/printk/printk.c:2504)
[   33.463897][  T678]  ? snapshot_read.cold (user.c:?)
[   33.463899][  T678]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   33.463902][  T678]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   33.463904][  T678]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   33.463907][  T678]  ? netdev_name (./include/linux/netdevice.h:5709 (discriminator 1))
[   33.463910][  T678]  ? __netdev_printk (net/core/dev.c:13148 (discriminator 2))
[   33.463913][  T678]  ? do_setlink.isra.0 (net/core/rtnetlink.c:3246)
[   33.463915][  T678]  netdev_info (net/core/dev.c:13195 (discriminator 3))
[   33.463918][  T678]  ? netdev_notice (net/core/dev.c:13194)
[   33.463921][  T678]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   33.463924][  T678]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   33.463926][  T678]  ? mark_held_locks (kernel/locking/lockdep.c:4341)
[   33.463930][  T678]  ? do_setlink.isra.0 (net/core/rtnetlink.c:3246)
[   33.463932][  T678]  netif_change_name.cold (net/core/dev.c:1507 (discriminator 3))
[   33.463934][  T678]  ? register_netdev (net/core/dev.c:11618)
[   33.463935][  T678]  ? 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))
[   33.463941][  T678]  ? netdev_adjacent_rename_links (net/core/dev.c:9598)
[   33.463943][  T678]  ? __kernel_text_address (kernel/extable.c:79)
[   33.463946][  T678]  ? write_profile (profile.c:?)
[   33.463950][  T678]  ? __asan_memset (mm/kasan/shadow.c:84 (discriminator 1))
[   33.463955][  T678]  do_setlink.isra.0 (net/core/rtnetlink.c:3246)
[   33.463959][  T678]  ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1))
[   33.463961][  T678]  ? rtnl_link_get_size (net/core/rtnetlink.c:747)
[   33.463962][  T678]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380)
[   33.463964][  T678]  ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2))
[   33.463967][  T678]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   33.463969][  T678]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   33.463971][  T678]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   33.463973][  T678]  ? kasan_save_stack (mm/kasan/common.c:58)
[   33.463975][  T678]  ? kasan_save_stack (mm/kasan/common.c:57)
[   33.463976][  T678]  ? kasan_save_track (mm/kasan/common.c:78)
[   33.463977][  T678]  ? __kasan_kmalloc (mm/kasan/common.c:398 mm/kasan/common.c:415)
[   33.463980][  T678]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   33.463982][  T678]  ? snd_ac97_proc_read_main (sound/pci/ac97/ac97_proc.c:320)
[   33.463985][  T678]  ? ___sys_sendmsg (net/socket.c:2758)
[   33.463988][  T678]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   33.463990][  T678]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   33.463993][  T678]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   33.463995][  T678]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   33.463996][  T678]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   33.463997][  T678]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   33.463999][  T678]  ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22))
[   33.464001][  T678]  ? __mutex_lock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:3188 kernel/locking/mutex.c:89 kernel/locking/mutex.c:134 kernel/locking/mutex.c:649 kernel/locking/mutex.c:821)
[   33.464003][  T678]  ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1))
[   33.464005][  T678]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   33.464008][  T678]  ? ww_mutex_lock (kernel/locking/mutex.c:934)
[   33.464009][  T678]  ? nla_get_range_signed (lib/nlattr.c:270)
[   33.464014][  T678]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   33.464016][  T678]  ? __rtnl_newlink (net/core/rtnetlink.c:4063)
[   33.464021][  T678]  rtnl_newlink (net/core/rtnetlink.c:4215)
[   33.464027][  T678]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   33.464029][  T678]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   33.464033][  T678]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   33.464035][  T678]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   33.464037][  T678]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   33.464039][  T678]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   33.464043][  T678]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   33.464045][  T678]  rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   33.464048][  T678]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   33.464049][  T678]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   33.464054][  T678]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   33.464056][  T678]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   33.464059][  T678]  netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   33.464062][  T678]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   33.464065][  T678]  ? netlink_ack (./include/linux/skbuff.h:2718)
[   33.464072][  T678]  ? netlink_deliver_tap (./include/linux/rcupdate.h:319 (discriminator 2) ./include/linux/rcupdate.h:880 (discriminator 2) ./include/net/netns/generic.h:48 (discriminator 2) net/netlink/af_netlink.c:334 (discriminator 2))
[   33.464074][  T678]  ? netlink_deliver_tap (./include/linux/rcupdate.h:319 (discriminator 2) ./include/linux/rcupdate.h:880 (discriminator 2) net/netlink/af_netlink.c:341 (discriminator 2))
[   33.464078][  T678]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   33.464082][  T678]  ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   33.464085][  T678]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   33.464089][  T678]  netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   33.464093][  T678]  ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7))
[   33.464097][  T678]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   33.464098][  T678]  ? __import_iovec (lib/iov_iter.c:1358 lib/iov_iter.c:1373)
[   33.464103][  T678]  __sock_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4))
[   33.464106][  T678]  ____sys_sendmsg (net/socket.c:2713)
[   33.464108][  T678]  ? copy_msghdr_from_user (net/socket.c:2650)
[   33.464111][  T678]  ? sock_write_iter (net/socket.c:1269)
[   33.464112][  T678]  ? move_addr_to_kernel (net/socket.c:258)
[   33.464120][  T678]  ___sys_sendmsg (net/socket.c:2767)
[   33.464122][  T678]  ? copy_msghdr_from_user (net/socket.c:2619)
[   33.464138][  T678]  __sys_sendmsg (net/socket.c:2799)
[   33.464141][  T678]  ? __sys_sendmsg_sock (net/socket.c:2780)
[   33.464147][  T678]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   33.464150][  T678]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   33.464153][  T678]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   33.464156][  T678]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   33.464158][  T678] RIP: 0033:0x7f447429254e
[   33.464162][  T678] Code: 4d 89 d8 e8 b4 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 03 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 b4 bd 00 00       	call   0xbdbc
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 03 ff ff ff       	call   0xffffffffffffff3c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 03 ff ff ff       	call   0xffffffffffffff12
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[   33.464164][  T678] RSP: 002b:00007ffd16c36370 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
[   33.464167][  T678] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f447429254e
[   33.464168][  T678] RDX: 0000000000000000 RSI: 00007ffd16c36420 RDI: 0000000000000005
[   33.464169][  T678] RBP: 00007ffd16c36380 R08: 0000000000000000 R09: 0000000000000000
[   33.464170][  T678] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a914439


Finger prints:
__alloc_skb:vprintk_emit:dump_stack_lvl:__kmalloc_noprof:put_chars
vprintk_emit:dump_stack_lvl:__kmalloc_noprof:put_chars:hvc_console_print
br_stp_disable_bridge:dump_stack_lvl:__kmalloc_noprof:put_chars:hvc_console_print
netif_change_name:vprintk_emit:dump_stack_lvl:__kmalloc_noprof:put_chars