======================================
| [   11.039155][  T246] softirqs last disabled at (24976): netif_change_name (./include/linux/spinlock.h:353 ./include/linux/seqlock.h:908 net/core/dev.c:1499)
| [   11.039158][  T246] Preemption disabled at:
| [   11.039158][  T246] vprintk_emit (kernel/printk/printk.c:2471)
| [   11.039166][  T246] Tainted: [W]=WARN
[   11.039167][  T246] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   11.039169][  T246] Call Trace:
[   11.039170][  T246]  <TASK>
[   11.039172][  T246]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   11.039177][  T246]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   11.039179][  T246]  __might_resched.cold (kernel/sched/core.c:9234)
[   11.039183][  T246]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   11.039187][  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)
[   11.039191][  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))
[   11.039193][  T246]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   11.039200][  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)
[   11.039202][  T246]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   11.039206][  T246]  put_chars (drivers/char/virtio_console.c:1176)
[   11.039208][  T246]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   11.039214][  T246]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   11.039222][  T246]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   11.039225][  T246]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   11.039229][  T246]  console_emit_next_record (kernel/printk/printk.c:3183)
[   11.039233][  T246]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   11.039235][  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))
[   11.039238][  T246]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   11.039240][  T246]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   11.039244][  T246]  console_flush_one_record (kernel/printk/printk.c:3268)
[   11.039248][  T246]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   11.039250][  T246]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   11.039255][  T246]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   11.039258][  T246]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   11.039260][  T246]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   11.039264][  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)
[   11.039268][  T246]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   11.039270][  T246]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   11.039272][  T246]  vprintk_emit (kernel/printk/printk.c:2479)
[   11.039275][  T246]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   11.039277][  T246]  ? save_trace (kernel/locking/lockdep.c:589)
[   11.039281][  T246]  _printk (kernel/printk/printk.c:2504)
[   11.039285][  T246]  ? snapshot_read.cold (user.c:?)
[   11.039288][  T246]  ? validate_chain (kernel/locking/lockdep.c:159 kernel/locking/lockdep.c:191 kernel/locking/lockdep.c:3928)
[   11.039290][  T246]  ? netdev_name (./include/linux/netdevice.h:5709 (discriminator 1))
[   11.039294][  T246]  ? __netdev_printk (net/core/dev.c:13148 (discriminator 2))
[   11.039297][  T246]  ? do_setlink.isra.0 (net/core/rtnetlink.c:3246)
[   11.039299][  T246]  netdev_info (net/core/dev.c:13195 (discriminator 3))
[   11.039302][  T246]  ? netdev_notice (net/core/dev.c:13194)
[   11.039304][  T246]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   11.039307][  T246]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   11.039310][  T246]  ? mark_held_locks (kernel/locking/lockdep.c:4341)
[   11.039313][  T246]  ? do_setlink.isra.0 (net/core/rtnetlink.c:3246)
[   11.039315][  T246]  netif_change_name.cold (net/core/dev.c:1507 (discriminator 3))
[   11.039317][  T246]  ? register_netdev (net/core/dev.c:11618)
[   11.039318][  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))
[   11.039323][  T246]  ? netdev_adjacent_rename_links (net/core/dev.c:9598)
[   11.039326][  T246]  ? __kernel_text_address (kernel/extable.c:79)
[   11.039328][  T246]  ? write_profile (profile.c:?)
[   11.039332][  T246]  ? __asan_memset (mm/kasan/shadow.c:84 (discriminator 1))
[   11.039338][  T246]  do_setlink.isra.0 (net/core/rtnetlink.c:3246)
[   11.039341][  T246]  ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1))
[   11.039343][  T246]  ? rtnl_link_get_size (net/core/rtnetlink.c:747)
[   11.039344][  T246]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380)
[   11.039347][  T246]  ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2))
[   11.039350][  T246]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   11.039352][  T246]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   11.039354][  T246]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   11.039356][  T246]  ? kasan_save_stack (mm/kasan/common.c:58)
[   11.039358][  T246]  ? kasan_save_stack (mm/kasan/common.c:57)
[   11.039359][  T246]  ? kasan_save_track (mm/kasan/common.c:78)
[   11.039360][  T246]  ? __kasan_kmalloc (mm/kasan/common.c:398 mm/kasan/common.c:415)
[   11.039362][  T246]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   11.039364][  T246]  ? snd_ac97_proc_read_main (sound/pci/ac97/ac97_proc.c:320)
[   11.039367][  T246]  ? ___sys_sendmsg (net/socket.c:2758)
[   11.039371][  T246]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   11.039373][  T246]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   11.039376][  T246]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   11.039377][  T246]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   11.039379][  T246]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   11.039380][  T246]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   11.039381][  T246]  ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22))
[   11.039384][  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)
[   11.039386][  T246]  ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1))
[   11.039388][  T246]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   11.039391][  T246]  ? ww_mutex_lock (kernel/locking/mutex.c:934)
[   11.039392][  T246]  ? nla_get_range_signed (lib/nlattr.c:270)
[   11.039397][  T246]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   11.039399][  T246]  ? __rtnl_newlink (net/core/rtnetlink.c:4063)
[   11.039404][  T246]  rtnl_newlink (net/core/rtnetlink.c:4215)
[   11.039409][  T246]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   11.039411][  T246]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   11.039415][  T246]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   11.039417][  T246]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   11.039419][  T246]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   11.039421][  T246]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   11.039424][  T246]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   11.039426][  T246]  rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   11.039429][  T246]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   11.039431][  T246]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   11.039435][  T246]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   11.039437][  T246]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   11.039440][  T246]  netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   11.039443][  T246]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   11.039446][  T246]  ? netlink_ack (./include/linux/skbuff.h:2718)
[   11.039452][  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))
[   11.039454][  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))
[   11.039459][  T246]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   11.039462][  T246]  ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   11.039465][  T246]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   11.039469][  T246]  netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   11.039473][  T246]  ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7))
[   11.039476][  T246]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   11.039478][  T246]  ? __import_iovec (lib/iov_iter.c:1358 lib/iov_iter.c:1373)
[   11.039483][  T246]  __sock_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4))
[   11.039486][  T246]  ____sys_sendmsg (net/socket.c:2713)
[   11.039488][  T246]  ? copy_msghdr_from_user (net/socket.c:2650)
[   11.039490][  T246]  ? sock_write_iter (net/socket.c:1269)
[   11.039492][  T246]  ? move_addr_to_kernel (net/socket.c:258)
[   11.039499][  T246]  ___sys_sendmsg (net/socket.c:2767)
[   11.039501][  T246]  ? copy_msghdr_from_user (net/socket.c:2619)
[   11.039521][  T246]  __sys_sendmsg (net/socket.c:2799)
[   11.039524][  T246]  ? __sys_sendmsg_sock (net/socket.c:2780)
[   11.039530][  T246]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   11.039533][  T246]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   11.039536][  T246]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   11.039539][  T246]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   11.039541][  T246] RIP: 0033:0x7f7d9980454e
[   11.039544][  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
[   11.039546][  T246] RSP: 002b:00007ffeb028e750 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
[   11.039549][  T246] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f7d9980454e
[   11.039550][  T246] RDX: 0000000000000000 RSI: 00007ffeb028e800 RDI: 0000000000000005
[   11.039551][  T246] RBP: 00007ffeb028e760 R08: 0000000000000000 R09: 0000000000000000
[   11.039552][  T246] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a911b94
[   11.039552][  T246] R13: 00000000004a1620 R14: 0000000000000000 R15: 00007ffeb028eed0
| [   13.475865][  T293] softirqs last disabled at (39374): addrconf_ifdown.isra.0 (net/ipv6/addrconf.c:3946)
| [   13.475867][  T293] Preemption disabled at:
| [   13.475868][  T293] vprintk_emit (kernel/printk/printk.c:2471)
| [   13.475876][  T293] Tainted: [W]=WARN
[   13.475877][  T293] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   13.475879][  T293] Call Trace:
[   13.475880][  T293]  <TASK>
[   13.475882][  T293]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   13.475887][  T293]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   13.475889][  T293]  __might_resched.cold (kernel/sched/core.c:9234)
[   13.475893][  T293]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   13.475897][  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)
[   13.475901][  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))
[   13.475903][  T293]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   13.475910][  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)
[   13.475913][  T293]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   13.475917][  T293]  put_chars (drivers/char/virtio_console.c:1176)
[   13.475919][  T293]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   13.475920][  T293]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   13.475924][  T293]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   13.475929][  T293]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   13.475936][  T293]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   13.475939][  T293]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   13.475941][  T293]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   13.475945][  T293]  console_emit_next_record (kernel/printk/printk.c:3183)
[   13.475949][  T293]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   13.475951][  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))
[   13.475954][  T293]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   13.475955][  T293]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   13.475959][  T293]  console_flush_one_record (kernel/printk/printk.c:3268)
[   13.475963][  T293]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   13.475965][  T293]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   13.475970][  T293]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   13.475973][  T293]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   13.475975][  T293]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   13.475976][  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)
[   13.475980][  T293]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   13.475982][  T293]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   13.475984][  T293]  vprintk_emit (kernel/printk/printk.c:2479)
[   13.475987][  T293]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   13.475989][  T293]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   13.475991][  T293]  ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:211 (discriminator 1) kernel/locking/spinlock.c:221 (discriminator 1))
[   13.475995][  T293]  ? mark_held_locks (kernel/locking/lockdep.c:4341)
[   13.475998][  T293]  _printk (kernel/printk/printk.c:2504)
[   13.476002][  T293]  ? snapshot_read.cold (user.c:?)
[   13.476005][  T293]  ? br_multicast_flood (??:?)
[   13.476008][  T293]  ? do_setlink.isra.0 (net/core/rtnetlink.c:3273 (discriminator 1))
[   13.476009][  T293]  ? rtnl_newlink (net/core/rtnetlink.c:4215)
[   13.476011][  T293]  ? rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   13.476015][  T293]  br_set_state (net/bridge/br_stp.c:57 (discriminator 2))
[   13.476019][  T293]  br_init_port (net/bridge/br_stp_if.c:39)
[   13.476021][  T293]  new_nbp (net/bridge/br_if.c:449)
[   13.476025][  T293]  br_add_if (net/bridge/br_if.c:592)
[   13.476027][  T293]  ? sync_rcu_exp_select_cpus (./include/linux/list.h:54 (discriminator 2))
[   13.476029][  T293]  ? __netdev_upper_dev_unlink (net/core/dev.c:9096)
[   13.476032][  T293]  ? kernel_text_address (kernel/extable.c:125 kernel/extable.c:94)
[   13.476035][  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)
[   13.476040][  T293]  ? vrf_del_slave (drivers/net/vrf.c:1068 drivers/net/vrf.c:1075)
[   13.476042][  T293]  do_set_master (net/core/rtnetlink.c:3071)
[   13.476045][  T293]  do_setlink.isra.0 (net/core/rtnetlink.c:3273 (discriminator 1))
[   13.476048][  T293]  ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1))
[   13.476052][  T293]  ? rtnl_link_get_size (net/core/rtnetlink.c:747)
[   13.476053][  T293]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380)
[   13.476056][  T293]  ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2))
[   13.476059][  T293]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   13.476061][  T293]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   13.476063][  T293]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   13.476065][  T293]  ? kasan_save_stack (mm/kasan/common.c:58)
[   13.476067][  T293]  ? kasan_save_stack (mm/kasan/common.c:57)
[   13.476068][  T293]  ? kasan_save_track (mm/kasan/common.c:78)
[   13.476070][  T293]  ? __kasan_kmalloc (mm/kasan/common.c:398 mm/kasan/common.c:415)
[   13.476072][  T293]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   13.476074][  T293]  ? snd_ac97_proc_read_main (sound/pci/ac97/ac97_proc.c:320)
[   13.476077][  T293]  ? ___sys_sendmsg (net/socket.c:2758)
[   13.476080][  T293]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   13.476082][  T293]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   13.476085][  T293]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   13.476086][  T293]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   13.476088][  T293]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   13.476089][  T293]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   13.476091][  T293]  ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22))
[   13.476093][  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)
[   13.476094][  T293]  ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1))
[   13.476096][  T293]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   13.476099][  T293]  ? ww_mutex_lock (kernel/locking/mutex.c:934)
[   13.476100][  T293]  ? nla_get_range_signed (lib/nlattr.c:270)
[   13.476105][  T293]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   13.476107][  T293]  ? __rtnl_newlink (net/core/rtnetlink.c:4063)
[   13.476112][  T293]  rtnl_newlink (net/core/rtnetlink.c:4215)
[   13.476117][  T293]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   13.476119][  T293]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   13.476123][  T293]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   13.476125][  T293]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   13.476127][  T293]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   13.476129][  T293]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   13.476132][  T293]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   13.476134][  T293]  rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   13.476137][  T293]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   13.476139][  T293]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   13.476143][  T293]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   13.476145][  T293]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   13.476148][  T293]  netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   13.476151][  T293]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   13.476154][  T293]  ? netlink_ack (./include/linux/skbuff.h:2718)
[   13.476160][  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))
[   13.476162][  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))
[   13.476166][  T293]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   13.476170][  T293]  ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   13.476173][  T293]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   13.476177][  T293]  netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   13.476180][  T293]  ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7))
[   13.476184][  T293]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   13.476186][  T293]  ? __import_iovec (lib/iov_iter.c:1358 lib/iov_iter.c:1373)
[   13.476191][  T293]  __sock_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4))
[   13.476194][  T293]  ____sys_sendmsg (net/socket.c:2713)
[   13.476196][  T293]  ? copy_msghdr_from_user (net/socket.c:2650)
[   13.476198][  T293]  ? sock_write_iter (net/socket.c:1269)
[   13.476200][  T293]  ? move_addr_to_kernel (net/socket.c:258)
[   13.476207][  T293]  ___sys_sendmsg (net/socket.c:2767)
[   13.476209][  T293]  ? copy_msghdr_from_user (net/socket.c:2619)
[   13.476225][  T293]  __sys_sendmsg (net/socket.c:2799)
[   13.476227][  T293]  ? __sys_sendmsg_sock (net/socket.c:2780)
[   13.476234][  T293]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   13.476236][  T293]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   13.476239][  T293]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   13.476242][  T293]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   13.476244][  T293] RIP: 0033:0x7fb3ee2ef54e
[   13.476248][  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
[   13.476250][  T293] RSP: 002b:00007fff82f19c10 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
[   13.476253][  T293] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007fb3ee2ef54e
[   13.476254][  T293] RDX: 0000000000000000 RSI: 00007fff82f19cc0 RDI: 0000000000000005
[   13.476255][  T293] RBP: 00007fff82f19c20 R08: 0000000000000000 R09: 0000000000000000
[   13.476256][  T293] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a911b96
[   13.476257][  T293] R13: 00000000004a1620 R14: 0000000000000000 R15: 00007fff82f1a380
| [   20.066380][  T341] softirqs last disabled at (35840): br_stp_disable_bridge (./include/linux/spinlock.h:353 net/bridge/br_stp_if.c:73)
| [   20.066382][  T341] Preemption disabled at:
| [   20.066383][  T341] 0x0
| [   20.066393][  T341] Tainted: [W]=WARN
[   20.066394][  T341] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   20.066395][  T341] Call Trace:
[   20.066397][  T341]  <TASK>
[   20.066398][  T341]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   20.066405][  T341]  __might_resched.cold (kernel/sched/core.c:9234)
[   20.066409][  T341]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   20.066413][  T341]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   20.066417][  T341]  __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))
[   20.066419][  T341]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   20.066425][  T341]  ? 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)
[   20.066428][  T341]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   20.066432][  T341]  put_chars (drivers/char/virtio_console.c:1176)
[   20.066433][  T341]  ? prb_final_commit (kernel/printk/printk_ringbuffer.c:1842)
[   20.066436][  T341]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   20.066439][  T341]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   20.066441][  T341]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   20.066444][  T341]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   20.066448][  T341]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   20.066452][  T341]  ? mark_usage (kernel/locking/lockdep.c:4690)
[   20.066454][  T341]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   20.066455][  T341]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   20.066459][  T341]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   20.066462][  T341]  ? console_emit_next_record (kernel/printk/printk.c:3095 (discriminator 2) kernel/printk/printk.c:3182 (discriminator 2))
[   20.066465][  T341]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   20.066467][  T341]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   20.066471][  T341]  console_emit_next_record (kernel/printk/printk.c:3183)
[   20.066475][  T341]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   20.066476][  T341]  ? 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))
[   20.066480][  T341]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   20.066481][  T341]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   20.066485][  T341]  console_flush_one_record (kernel/printk/printk.c:3268)
[   20.066489][  T341]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   20.066491][  T341]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   20.066496][  T341]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   20.066499][  T341]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   20.066501][  T341]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   20.066503][  T341]  ? 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)
[   20.066506][  T341]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   20.066508][  T341]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   20.066511][  T341]  vprintk_emit (kernel/printk/printk.c:2479)
[   20.066514][  T341]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   20.066516][  T341]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   20.066518][  T341]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   20.066521][  T341]  _printk (kernel/printk/printk.c:2504)
[   20.066525][  T341]  ? snapshot_read.cold (user.c:?)
[   20.066532][  T341]  br_set_state (net/bridge/br_stp.c:57 (discriminator 2))
[   20.066536][  T341]  br_stp_disable_port (net/bridge/br_stp_if.c:106)
[   20.066540][  T341]  br_stp_disable_bridge (net/bridge/br_stp_if.c:76)
[   20.066542][  T341]  br_dev_stop (net/bridge/br_device.c:193)
[   20.066545][  T341]  ? rtnl_is_locked (net/core/rtnetlink.c:169)
[   20.066547][  T341]  __dev_close_many (net/core/dev.c:1798)
[   20.066552][  T341]  ? netif_open (net/core/dev.c:1755)
[   20.066553][  T341]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   20.066556][  T341]  ? mark_held_locks (kernel/locking/lockdep.c:4341)
[   20.066560][  T341]  __dev_change_flags (net/core/dev.c:1811 net/core/dev.c:9810)
[   20.066564][  T341]  ? netif_set_allmulti (./include/net/netdev_lock.h:33)
[   20.066567][  T341]  ? synchronize_rcu_normal (kernel/rcu/tree.c:3360)
[   20.066571][  T341]  netif_change_flags (net/core/dev.c:9877)
[   20.066579][  T341]  dev_change_flags (net/core/dev_api.c:68)
[   20.066580][  T341]  ? kernel_text_address (kernel/extable.c:125 kernel/extable.c:94)
[   20.066584][  T341]  cycle_netdev (drivers/net/vrf.c:1001)
[   20.066589][  T341]  vrf_del_slave (drivers/net/vrf.c:1068 drivers/net/vrf.c:1075)
[   20.066591][  T341]  do_set_master (net/core/rtnetlink.c:3055)
[   20.066595][  T341]  do_setlink.isra.0 (net/core/rtnetlink.c:3273 (discriminator 1))
[   20.066598][  T341]  ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1))
[   20.066601][  T341]  ? rtnl_link_get_size (net/core/rtnetlink.c:747)
[   20.066603][  T341]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380)
[   20.066605][  T341]  ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2))
[   20.066608][  T341]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   20.066610][  T341]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   20.066611][  T341]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   20.066614][  T341]  ? kasan_save_stack (mm/kasan/common.c:58)
[   20.066616][  T341]  ? kasan_save_stack (mm/kasan/common.c:57)
[   20.066617][  T341]  ? kasan_save_track (mm/kasan/common.c:78)
[   20.066618][  T341]  ? __kasan_kmalloc (mm/kasan/common.c:398 mm/kasan/common.c:415)
[   20.066621][  T341]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   20.066623][  T341]  ? snd_ac97_proc_read_main (sound/pci/ac97/ac97_proc.c:320)
[   20.066626][  T341]  ? ___sys_sendmsg (net/socket.c:2758)
[   20.066629][  T341]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   20.066631][  T341]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   20.066634][  T341]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   20.066635][  T341]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   20.066637][  T341]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   20.066638][  T341]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   20.066640][  T341]  ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22))
[   20.066642][  T341]  ? __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)
[   20.066644][  T341]  ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1))
[   20.066646][  T341]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   20.066650][  T341]  ? ww_mutex_lock (kernel/locking/mutex.c:934)
[   20.066651][  T341]  ? nla_get_range_signed (lib/nlattr.c:270)
[   20.066655][  T341]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   20.066658][  T341]  ? __rtnl_newlink (net/core/rtnetlink.c:4063)
[   20.066663][  T341]  rtnl_newlink (net/core/rtnetlink.c:4215)
[   20.066668][  T341]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   20.066670][  T341]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   20.066674][  T341]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   20.066676][  T341]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   20.066678][  T341]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   20.066680][  T341]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   20.066683][  T341]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   20.066685][  T341]  rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   20.066689][  T341]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   20.066690][  T341]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   20.066694][  T341]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   20.066696][  T341]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   20.066700][  T341]  netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   20.066702][  T341]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   20.066705][  T341]  ? netlink_ack (./include/linux/skbuff.h:2718)
[   20.066711][  T341]  ? 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))
[   20.066714][  T341]  ? 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))
[   20.066718][  T341]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   20.066722][  T341]  ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   20.066724][  T341]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   20.066729][  T341]  netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   20.066733][  T341]  ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7))
[   20.066736][  T341]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   20.066738][  T341]  ? __import_iovec (lib/iov_iter.c:1358 lib/iov_iter.c:1373)
[   20.066743][  T341]  __sock_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4))
[   20.066746][  T341]  ____sys_sendmsg (net/socket.c:2713)
[   20.066748][  T341]  ? copy_msghdr_from_user (net/socket.c:2650)
[   20.066750][  T341]  ? sock_write_iter (net/socket.c:1269)
[   20.066752][  T341]  ? move_addr_to_kernel (net/socket.c:258)
[   20.066759][  T341]  ___sys_sendmsg (net/socket.c:2767)
[   20.066762][  T341]  ? copy_msghdr_from_user (net/socket.c:2619)
[   20.066778][  T341]  __sys_sendmsg (net/socket.c:2799)
[   20.066780][  T341]  ? __sys_sendmsg_sock (net/socket.c:2780)
[   20.066786][  T341]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   20.066789][  T341]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   20.066792][  T341]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   20.066795][  T341]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   20.066797][  T341] RIP: 0033:0x7f5daad3754e
[   20.066799][  T341] 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
[   20.066801][  T341] RSP: 002b:00007ffc9c2c2220 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
[   20.066803][  T341] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f5daad3754e
[   20.066805][  T341] RDX: 0000000000000000 RSI: 00007ffc9c2c22d0 RDI: 0000000000000005
[   20.066806][  T341] RBP: 00007ffc9c2c2230 R08: 0000000000000000 R09: 0000000000000000
[   20.066806][  T341] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a911b9d
[   20.066807][  T341] R13: 00000000004a1620 R14: 0000000000000000 R15: 00007ffc9c2c2990
| [   22.850700][  T398] softirqs last disabled at (36124): __alloc_skb (./include/linux/bottom_half.h:20 (discriminator 2) net/core/skbuff.c:697 (discriminator 2))
| [   22.850702][  T398] Preemption disabled at:
| [   22.850703][  T398] vprintk_emit (kernel/printk/printk.c:2471)
| [   22.850711][  T398] Tainted: [W]=WARN
[   22.850712][  T398] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   22.850713][  T398] Call Trace:
[   22.850715][  T398]  <TASK>
[   22.850716][  T398]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   22.850722][  T398]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   22.850724][  T398]  __might_resched.cold (kernel/sched/core.c:9234)
[   22.850728][  T398]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   22.850732][  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)
[   22.850736][  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))
[   22.850738][  T398]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   22.850744][  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)
[   22.850747][  T398]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   22.850751][  T398]  put_chars (drivers/char/virtio_console.c:1176)
[   22.850753][  T398]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   22.850760][  T398]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   22.850767][  T398]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   22.850770][  T398]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   22.850775][  T398]  console_emit_next_record (kernel/printk/printk.c:3183)
[   22.850779][  T398]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   22.850780][  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))
[   22.850784][  T398]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   22.850786][  T398]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   22.850790][  T398]  console_flush_one_record (kernel/printk/printk.c:3268)
[   22.850794][  T398]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   22.850796][  T398]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   22.850802][  T398]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   22.850804][  T398]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   22.850806][  T398]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   22.850808][  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)
[   22.850812][  T398]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   22.850813][  T398]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   22.850816][  T398]  vprintk_emit (kernel/printk/printk.c:2479)
[   22.850819][  T398]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   22.850820][  T398]  ? netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   22.850824][  T398]  ? netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   22.850825][  T398]  ? __sock_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4))
[   22.850828][  T398]  ? ____sys_sendmsg (net/socket.c:2713)
[   22.850829][  T398]  ? ___sys_sendmsg (net/socket.c:2767)
[   22.850831][  T398]  ? __sys_sendmsg (net/socket.c:2799)
[   22.850833][  T398]  ? do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   22.850838][  T398]  _printk (kernel/printk/printk.c:2504)
[   22.850841][  T398]  ? snapshot_read.cold (user.c:?)
[   22.850846][  T398]  ? netdev_name (./include/linux/netdevice.h:5709 (discriminator 1))
[   22.850849][  T398]  ? __netdev_printk (net/core/dev.c:13148 (discriminator 2))
[   22.850853][  T398]  netdev_info (net/core/dev.c:13195 (discriminator 3))
[   22.850856][  T398]  ? netdev_notice (net/core/dev.c:13194)
[   22.850860][  T398]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   22.850862][  T398]  ? __up_read (kernel/locking/rwsem.c:1397 (discriminator 1))
[   22.850865][  T398]  ? down_write_nested (kernel/locking/rwsem.c:1759)
[   22.850867][  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)
[   22.850869][  T398]  netif_set_allmulti.cold (net/core/dev.c:9731 (discriminator 3))
[   22.850873][  T398]  dev_set_allmulti (net/core/dev_api.c:315)
[   22.850877][  T398]  del_nbp (net/bridge/br_if.c:253 net/bridge/br_if.c:341)
[   22.850880][  T398]  ? __asan_memset (mm/kasan/shadow.c:84 (discriminator 1))
[   22.850886][  T398]  br_dev_delete (net/bridge/br_if.c:387)
[   22.850889][  T398]  rtnl_dellink (net/core/rtnetlink.c:3651 net/core/rtnetlink.c:3694)
[   22.850891][  T398]  ? mark_usage (kernel/locking/lockdep.c:4690)
[   22.850893][  T398]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   22.850895][  T398]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   22.850897][  T398]  ? rtnl_link_get_net_capable.constprop.0 (net/core/rtnetlink.c:2728)
[   22.850919][  T398]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   22.850921][  T398]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   22.850924][  T398]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   22.850925][  T398]  ? mark_usage (kernel/locking/lockdep.c:4690)
[   22.850928][  T398]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   22.850932][  T398]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   22.850934][  T398]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   22.850936][  T398]  ? rtnl_link_get_net_capable.constprop.0 (net/core/rtnetlink.c:2728)
[   22.850938][  T398]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   22.850941][  T398]  ? rtnl_link_get_net_capable.constprop.0 (net/core/rtnetlink.c:2728)
[   22.850944][  T398]  rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   22.850947][  T398]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   22.850948][  T398]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   22.850953][  T398]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   22.850955][  T398]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   22.850958][  T398]  netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   22.850960][  T398]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   22.850963][  T398]  ? netlink_ack (./include/linux/skbuff.h:2718)
[   22.850969][  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))
[   22.850971][  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))
[   22.850976][  T398]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   22.850980][  T398]  ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   22.850983][  T398]  ? netlink_sendmsg (./include/linux/instrumented.h:112 ./include/linux/atomic/atomic-instrumented.h:252 ./include/linux/refcount.h:283 ./include/linux/refcount.h:366 ./include/linux/refcount.h:383 ./include/linux/pid.h:90 ./include/net/scm.h:72 ./include/net/scm.h:98 net/netlink/af_netlink.c:1838)
[   22.850987][  T398]  netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   22.850991][  T398]  ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7))
[   22.850995][  T398]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   22.850996][  T398]  ? __import_iovec (lib/iov_iter.c:1358 lib/iov_iter.c:1373)
[   22.851002][  T398]  __sock_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4))
[   22.851004][  T398]  ____sys_sendmsg (net/socket.c:2713)
[   22.851007][  T398]  ? copy_msghdr_from_user (net/socket.c:2650)
[   22.851009][  T398]  ? sock_write_iter (net/socket.c:1269)
[   22.851010][  T398]  ? move_addr_to_kernel (net/socket.c:258)
[   22.851018][  T398]  ___sys_sendmsg (net/socket.c:2767)
[   22.851020][  T398]  ? copy_msghdr_from_user (net/socket.c:2619)
[   22.851036][  T398]  __sys_sendmsg (net/socket.c:2799)
[   22.851039][  T398]  ? __sys_sendmsg_sock (net/socket.c:2780)
[   22.851045][  T398]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   22.851048][  T398]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   22.851050][  T398]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   22.851053][  T398]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   22.851055][  T398] RIP: 0033:0x7f412ce7854e
[   22.851059][  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
[   22.851061][  T398] RSP: 002b:00007ffd0a3f3f30 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
[   22.851063][  T398] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f412ce7854e
[   22.851064][  T398] RDX: 0000000000000000 RSI: 00007ffd0a3f3fe0 RDI: 0000000000000005
[   22.851065][  T398] RBP: 00007ffd0a3f3f40 R08: 0000000000000000 R09: 0000000000000000
[   22.851066][  T398] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a911ba0
[   22.851067][  T398] R13: 00000000004a1620 R14: 0000000000000000 R15: 00007ffd0a3f46a0
| [   25.403952][  T487] softirqs last disabled at (18738): netif_change_name (./include/linux/spinlock.h:353 ./include/linux/seqlock.h:908 net/core/dev.c:1499)
| [   25.403955][  T487] Preemption disabled at:
| [   25.403955][  T487] vprintk_emit (kernel/printk/printk.c:2471)
| [   25.403963][  T487] Tainted: [W]=WARN
[   25.403964][  T487] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   25.403966][  T487] Call Trace:
[   25.403967][  T487]  <TASK>
[   25.403969][  T487]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   25.403974][  T487]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   25.403976][  T487]  __might_resched.cold (kernel/sched/core.c:9234)
[   25.403980][  T487]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   25.403984][  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)
[   25.403988][  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))
[   25.403990][  T487]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   25.403997][  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)
[   25.403999][  T487]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   25.404003][  T487]  put_chars (drivers/char/virtio_console.c:1176)
[   25.404006][  T487]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   25.404011][  T487]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   25.404019][  T487]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   25.404022][  T487]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   25.404026][  T487]  console_emit_next_record (kernel/printk/printk.c:3183)
[   25.404030][  T487]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   25.404032][  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))
[   25.404035][  T487]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   25.404037][  T487]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   25.404041][  T487]  console_flush_one_record (kernel/printk/printk.c:3268)
[   25.404045][  T487]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   25.404047][  T487]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   25.404052][  T487]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   25.404055][  T487]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   25.404057][  T487]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   25.404058][  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)
[   25.404062][  T487]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   25.404063][  T487]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   25.404066][  T487]  vprintk_emit (kernel/printk/printk.c:2479)
[   25.404069][  T487]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   25.404071][  T487]  ? _mutex_trylock_nest_lock (kernel/locking/mutex.c:1227 (discriminator 6))
[   25.404076][  T487]  _printk (kernel/printk/printk.c:2504)
[   25.404079][  T487]  ? snapshot_read.cold (user.c:?)
[   25.404081][  T487]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   25.404084][  T487]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   25.404086][  T487]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   25.404088][  T487]  ? netdev_name (./include/linux/netdevice.h:5709 (discriminator 1))
[   25.404092][  T487]  ? __netdev_printk (net/core/dev.c:13148 (discriminator 2))
[   25.404095][  T487]  ? do_setlink.isra.0 (net/core/rtnetlink.c:3246)
[   25.404097][  T487]  netdev_info (net/core/dev.c:13195 (discriminator 3))
[   25.404100][  T487]  ? netdev_notice (net/core/dev.c:13194)
[   25.404102][  T487]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   25.404105][  T487]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   25.404108][  T487]  ? mark_held_locks (kernel/locking/lockdep.c:4341)
[   25.404111][  T487]  ? do_setlink.isra.0 (net/core/rtnetlink.c:3246)
[   25.404113][  T487]  netif_change_name.cold (net/core/dev.c:1507 (discriminator 3))
[   25.404115][  T487]  ? register_netdev (net/core/dev.c:11618)
[   25.404117][  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))
[   25.404122][  T487]  ? netdev_adjacent_rename_links (net/core/dev.c:9598)
[   25.404125][  T487]  ? __kernel_text_address (kernel/extable.c:79)
[   25.404127][  T487]  ? write_profile (profile.c:?)
[   25.404131][  T487]  ? __asan_memset (mm/kasan/shadow.c:84 (discriminator 1))
[   25.404136][  T487]  do_setlink.isra.0 (net/core/rtnetlink.c:3246)
[   25.404140][  T487]  ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1))
[   25.404142][  T487]  ? rtnl_link_get_size (net/core/rtnetlink.c:747)
[   25.404143][  T487]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380)
[   25.404145][  T487]  ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2))
[   25.404148][  T487]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   25.404150][  T487]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   25.404152][  T487]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   25.404154][  T487]  ? kasan_save_stack (mm/kasan/common.c:58)
[   25.404156][  T487]  ? kasan_save_stack (mm/kasan/common.c:57)
[   25.404157][  T487]  ? kasan_save_track (mm/kasan/common.c:78)
[   25.404158][  T487]  ? __kasan_kmalloc (mm/kasan/common.c:398 mm/kasan/common.c:415)
[   25.404160][  T487]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   25.404162][  T487]  ? snd_ac97_proc_read_main (sound/pci/ac97/ac97_proc.c:320)
[   25.404165][  T487]  ? ___sys_sendmsg (net/socket.c:2758)
[   25.404168][  T487]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   25.404170][  T487]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   25.404173][  T487]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   25.404174][  T487]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   25.404176][  T487]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   25.404177][  T487]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   25.404178][  T487]  ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22))
[   25.404180][  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)
[   25.404182][  T487]  ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1))
[   25.404183][  T487]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   25.404187][  T487]  ? ww_mutex_lock (kernel/locking/mutex.c:934)
[   25.404188][  T487]  ? nla_get_range_signed (lib/nlattr.c:270)
[   25.404192][  T487]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   25.404194][  T487]  ? __rtnl_newlink (net/core/rtnetlink.c:4063)
[   25.404199][  T487]  rtnl_newlink (net/core/rtnetlink.c:4215)
[   25.404204][  T487]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   25.404206][  T487]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   25.404211][  T487]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   25.404212][  T487]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   25.404214][  T487]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   25.404216][  T487]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   25.404220][  T487]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   25.404222][  T487]  rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   25.404224][  T487]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   25.404226][  T487]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   25.404230][  T487]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   25.404232][  T487]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   25.404235][  T487]  netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   25.404238][  T487]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   25.404241][  T487]  ? netlink_ack (./include/linux/skbuff.h:2718)
[   25.404247][  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))
[   25.404249][  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))
[   25.404253][  T487]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   25.404257][  T487]  ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   25.404260][  T487]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   25.404267][  T487]  netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   25.404271][  T487]  ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7))
[   25.404274][  T487]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   25.404276][  T487]  ? __import_iovec (lib/iov_iter.c:1358 lib/iov_iter.c:1373)
[   25.404281][  T487]  __sock_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4))
[   25.404284][  T487]  ____sys_sendmsg (net/socket.c:2713)
[   25.404286][  T487]  ? copy_msghdr_from_user (net/socket.c:2650)
[   25.404288][  T487]  ? sock_write_iter (net/socket.c:1269)
[   25.404290][  T487]  ? move_addr_to_kernel (net/socket.c:258)
[   25.404297][  T487]  ___sys_sendmsg (net/socket.c:2767)
[   25.404299][  T487]  ? copy_msghdr_from_user (net/socket.c:2619)
[   25.404315][  T487]  __sys_sendmsg (net/socket.c:2799)
[   25.404318][  T487]  ? __sys_sendmsg_sock (net/socket.c:2780)
[   25.404324][  T487]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   25.404326][  T487]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   25.404329][  T487]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   25.404332][  T487]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   25.404334][  T487] RIP: 0033:0x7f05310a854e
[   25.404338][  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
[   25.404340][  T487] RSP: 002b:00007ffd173e38a0 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
[   25.404343][  T487] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f05310a854e
[   25.404344][  T487] RDX: 0000000000000000 RSI: 00007ffd173e3950 RDI: 0000000000000005
[   25.404345][  T487] RBP: 00007ffd173e38b0 R08: 0000000000000000 R09: 0000000000000000
[   25.404346][  T487] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a911ba2
[   25.404346][  T487] R13: 00000000004a1620 R14: 0000000000000000 R15: 00007ffd173e4020
| [   34.108821][  T678] softirqs last disabled at (19112): netif_change_name (./include/linux/spinlock.h:353 ./include/linux/seqlock.h:908 net/core/dev.c:1499)
| [   34.108824][  T678] Preemption disabled at:
| [   34.108824][  T678] vprintk_emit (kernel/printk/printk.c:2471)
| [   34.108832][  T678] Tainted: [W]=WARN
[   34.108833][  T678] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   34.108835][  T678] Call Trace:
[   34.108836][  T678]  <TASK>
[   34.108838][  T678]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   34.108843][  T678]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   34.108844][  T678]  __might_resched.cold (kernel/sched/core.c:9234)
[   34.108849][  T678]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   34.108853][  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)
[   34.108857][  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))
[   34.108858][  T678]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   34.108865][  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)
[   34.108867][  T678]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   34.108871][  T678]  put_chars (drivers/char/virtio_console.c:1176)
[   34.108874][  T678]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   34.108880][  T678]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   34.108887][  T678]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   34.108890][  T678]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   34.108894][  T678]  console_emit_next_record (kernel/printk/printk.c:3183)
[   34.108898][  T678]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   34.108900][  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))
[   34.108903][  T678]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   34.108906][  T678]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   34.108910][  T678]  console_flush_one_record (kernel/printk/printk.c:3268)
[   34.108914][  T678]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   34.108916][  T678]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   34.108921][  T678]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   34.108924][  T678]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   34.108926][  T678]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   34.108927][  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)
[   34.108931][  T678]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   34.108933][  T678]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   34.108935][  T678]  vprintk_emit (kernel/printk/printk.c:2479)
[   34.108938][  T678]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   34.108941][  T678]  ? _mutex_trylock_nest_lock (kernel/locking/mutex.c:1227 (discriminator 6))
[   34.108946][  T678]  _printk (kernel/printk/printk.c:2504)
[   34.108949][  T678]  ? snapshot_read.cold (user.c:?)
[   34.108950][  T678]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   34.108953][  T678]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   34.108956][  T678]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   34.108958][  T678]  ? netdev_name (./include/linux/netdevice.h:5709 (discriminator 1))
[   34.108961][  T678]  ? __netdev_printk (net/core/dev.c:13148 (discriminator 2))
[   34.108964][  T678]  ? do_setlink.isra.0 (net/core/rtnetlink.c:3246)
[   34.108966][  T678]  netdev_info (net/core/dev.c:13195 (discriminator 3))
[   34.108969][  T678]  ? netdev_notice (net/core/dev.c:13194)
[   34.108972][  T678]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   34.108975][  T678]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   34.108977][  T678]  ? mark_held_locks (kernel/locking/lockdep.c:4341)
[   34.108981][  T678]  ? do_setlink.isra.0 (net/core/rtnetlink.c:3246)
[   34.108983][  T678]  netif_change_name.cold (net/core/dev.c:1507 (discriminator 3))
[   34.108985][  T678]  ? register_netdev (net/core/dev.c:11618)
[   34.108986][  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))
[   34.108991][  T678]  ? netdev_adjacent_rename_links (net/core/dev.c:9598)
[   34.108993][  T678]  ? __kernel_text_address (kernel/extable.c:79)
[   34.108996][  T678]  ? write_profile (profile.c:?)
[   34.109000][  T678]  ? __asan_memset (mm/kasan/shadow.c:84 (discriminator 1))
[   34.109005][  T678]  do_setlink.isra.0 (net/core/rtnetlink.c:3246)
[   34.109009][  T678]  ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1))
[   34.109011][  T678]  ? rtnl_link_get_size (net/core/rtnetlink.c:747)
[   34.109012][  T678]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380)
[   34.109014][  T678]  ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2))
[   34.109017][  T678]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   34.109019][  T678]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   34.109020][  T678]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   34.109023][  T678]  ? kasan_save_stack (mm/kasan/common.c:58)
[   34.109024][  T678]  ? kasan_save_stack (mm/kasan/common.c:57)
[   34.109026][  T678]  ? kasan_save_track (mm/kasan/common.c:78)
[   34.109027][  T678]  ? __kasan_kmalloc (mm/kasan/common.c:398 mm/kasan/common.c:415)
[   34.109029][  T678]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   34.109031][  T678]  ? snd_ac97_proc_read_main (sound/pci/ac97/ac97_proc.c:320)
[   34.109034][  T678]  ? ___sys_sendmsg (net/socket.c:2758)
[   34.109037][  T678]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   34.109039][  T678]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   34.109042][  T678]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   34.109044][  T678]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   34.109045][  T678]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   34.109046][  T678]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   34.109048][  T678]  ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22))
[   34.109050][  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)
[   34.109051][  T678]  ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1))
[   34.109053][  T678]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   34.109056][  T678]  ? ww_mutex_lock (kernel/locking/mutex.c:934)
[   34.109057][  T678]  ? nla_get_range_signed (lib/nlattr.c:270)
[   34.109062][  T678]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   34.109064][  T678]  ? __rtnl_newlink (net/core/rtnetlink.c:4063)
[   34.109069][  T678]  rtnl_newlink (net/core/rtnetlink.c:4215)
[   34.109074][  T678]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   34.109076][  T678]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   34.109080][  T678]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   34.109082][  T678]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   34.109084][  T678]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   34.109086][  T678]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   34.109089][  T678]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   34.109091][  T678]  rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   34.109094][  T678]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   34.109095][  T678]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   34.109100][  T678]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   34.109102][  T678]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   34.109105][  T678]  netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   34.109108][  T678]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   34.109111][  T678]  ? netlink_ack (./include/linux/skbuff.h:2718)
[   34.109117][  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))
[   34.109119][  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))
[   34.109123][  T678]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   34.109127][  T678]  ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   34.109129][  T678]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   34.109133][  T678]  netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   34.109137][  T678]  ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7))
[   34.109141][  T678]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   34.109142][  T678]  ? __import_iovec (lib/iov_iter.c:1358 lib/iov_iter.c:1373)
[   34.109148][  T678]  __sock_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4))
[   34.109150][  T678]  ____sys_sendmsg (net/socket.c:2713)
[   34.109153][  T678]  ? copy_msghdr_from_user (net/socket.c:2650)
[   34.109155][  T678]  ? sock_write_iter (net/socket.c:1269)
[   34.109156][  T678]  ? move_addr_to_kernel (net/socket.c:258)
[   34.109163][  T678]  ___sys_sendmsg (net/socket.c:2767)
[   34.109166][  T678]  ? copy_msghdr_from_user (net/socket.c:2619)
[   34.109181][  T678]  __sys_sendmsg (net/socket.c:2799)
[   34.109184][  T678]  ? __sys_sendmsg_sock (net/socket.c:2780)
[   34.109190][  T678]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   34.109193][  T678]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   34.109196][  T678]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   34.109198][  T678]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   34.109201][  T678] RIP: 0033:0x7f22b09a554e
[   34.109204][  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
[   34.109206][  T678] RSP: 002b:00007ffe3aa58c40 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
[   34.109209][  T678] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f22b09a554e
[   34.109210][  T678] RDX: 0000000000000000 RSI: 00007ffe3aa58cf0 RDI: 0000000000000005
[   34.109211][  T678] RBP: 00007ffe3aa58c50 R08: 0000000000000000 R09: 0000000000000000
[   34.109212][  T678] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a911bab


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