======================================
| [   10.582712][  T245] softirqs last disabled at (18640): netif_change_name (./include/linux/spinlock.h:353 ./include/linux/seqlock.h:908 net/core/dev.c:1499)
| [   10.582715][  T245] Preemption disabled at:
| [   10.582715][  T245] vprintk_emit (kernel/printk/printk.c:2471)
| [   10.582724][  T245] Tainted: [W]=WARN
[   10.582725][  T245] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   10.582727][  T245] Call Trace:
[   10.582728][  T245]  <TASK>
[   10.582730][  T245]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   10.582736][  T245]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   10.582738][  T245]  __might_resched.cold (kernel/sched/core.c:9234)
[   10.582742][  T245]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   10.582746][  T245]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   10.582750][  T245]  __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))
[   10.582752][  T245]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   10.582758][  T245]  ? 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)
[   10.582761][  T245]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   10.582765][  T245]  put_chars (drivers/char/virtio_console.c:1176)
[   10.582767][  T245]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   10.582773][  T245]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   10.582781][  T245]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   10.582784][  T245]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   10.582788][  T245]  console_emit_next_record (kernel/printk/printk.c:3183)
[   10.582792][  T245]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   10.582793][  T245]  ? 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))
[   10.582796][  T245]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   10.582799][  T245]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   10.582803][  T245]  console_flush_one_record (kernel/printk/printk.c:3268)
[   10.582807][  T245]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   10.582809][  T245]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   10.582814][  T245]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   10.582817][  T245]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   10.582818][  T245]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   10.582820][  T245]  ? 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)
[   10.582824][  T245]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   10.582825][  T245]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   10.582828][  T245]  vprintk_emit (kernel/printk/printk.c:2479)
[   10.582831][  T245]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   10.582833][  T245]  ? save_trace (kernel/locking/lockdep.c:589)
[   10.582837][  T245]  _printk (kernel/printk/printk.c:2504)
[   10.582840][  T245]  ? snapshot_read.cold (user.c:?)
[   10.582844][  T245]  ? validate_chain (kernel/locking/lockdep.c:159 kernel/locking/lockdep.c:191 kernel/locking/lockdep.c:3928)
[   10.582846][  T245]  ? netdev_name (./include/linux/netdevice.h:5709 (discriminator 1))
[   10.582849][  T245]  ? __netdev_printk (net/core/dev.c:13148 (discriminator 2))
[   10.582852][  T245]  ? do_setlink.isra.0 (net/core/rtnetlink.c:3246)
[   10.582854][  T245]  netdev_info (net/core/dev.c:13195 (discriminator 3))
[   10.582857][  T245]  ? netdev_notice (net/core/dev.c:13194)
[   10.582859][  T245]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   10.582862][  T245]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   10.582864][  T245]  ? mark_held_locks (kernel/locking/lockdep.c:4341)
[   10.582868][  T245]  ? do_setlink.isra.0 (net/core/rtnetlink.c:3246)
[   10.582870][  T245]  netif_change_name.cold (net/core/dev.c:1507 (discriminator 3))
[   10.582872][  T245]  ? register_netdev (net/core/dev.c:11618)
[   10.582873][  T245]  ? 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))
[   10.582878][  T245]  ? netdev_adjacent_rename_links (net/core/dev.c:9598)
[   10.582881][  T245]  ? __kernel_text_address (kernel/extable.c:79)
[   10.582883][  T245]  ? write_profile (profile.c:?)
[   10.582887][  T245]  ? __asan_memset (mm/kasan/shadow.c:84 (discriminator 1))
[   10.582893][  T245]  do_setlink.isra.0 (net/core/rtnetlink.c:3246)
[   10.582896][  T245]  ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1))
[   10.582898][  T245]  ? rtnl_link_get_size (net/core/rtnetlink.c:747)
[   10.582899][  T245]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380)
[   10.582902][  T245]  ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2))
[   10.582905][  T245]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   10.582907][  T245]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   10.582909][  T245]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   10.582911][  T245]  ? kasan_save_stack (mm/kasan/common.c:58)
[   10.582913][  T245]  ? kasan_save_stack (mm/kasan/common.c:57)
[   10.582914][  T245]  ? kasan_save_track (mm/kasan/common.c:78)
[   10.582915][  T245]  ? __kasan_kmalloc (mm/kasan/common.c:398 mm/kasan/common.c:415)
[   10.582918][  T245]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   10.582920][  T245]  ? snd_ac97_proc_read_main (sound/pci/ac97/ac97_proc.c:320)
[   10.582922][  T245]  ? ___sys_sendmsg (net/socket.c:2758)
[   10.582926][  T245]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   10.582928][  T245]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   10.582930][  T245]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   10.582932][  T245]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   10.582934][  T245]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   10.582935][  T245]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   10.582936][  T245]  ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22))
[   10.582938][  T245]  ? __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)
[   10.582941][  T245]  ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1))
[   10.582943][  T245]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   10.582946][  T245]  ? ww_mutex_lock (kernel/locking/mutex.c:934)
[   10.582947][  T245]  ? nla_get_range_signed (lib/nlattr.c:270)
[   10.582952][  T245]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   10.582957][  T245]  ? __rtnl_newlink (net/core/rtnetlink.c:4063)
[   10.582962][  T245]  rtnl_newlink (net/core/rtnetlink.c:4215)
[   10.582967][  T245]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   10.582969][  T245]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   10.582973][  T245]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   10.582975][  T245]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   10.582977][  T245]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   10.582979][  T245]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   10.582982][  T245]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   10.582984][  T245]  rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   10.582987][  T245]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   10.582989][  T245]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   10.582993][  T245]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   10.582995][  T245]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   10.582998][  T245]  netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   10.583001][  T245]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   10.583004][  T245]  ? netlink_ack (./include/linux/skbuff.h:2718)
[   10.583010][  T245]  ? 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))
[   10.583012][  T245]  ? 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))
[   10.583017][  T245]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   10.583020][  T245]  ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   10.583023][  T245]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   10.583027][  T245]  netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   10.583031][  T245]  ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7))
[   10.583034][  T245]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   10.583036][  T245]  ? __import_iovec (lib/iov_iter.c:1358 lib/iov_iter.c:1373)
[   10.583041][  T245]  __sock_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4))
[   10.583044][  T245]  ____sys_sendmsg (net/socket.c:2713)
[   10.583046][  T245]  ? copy_msghdr_from_user (net/socket.c:2650)
[   10.583048][  T245]  ? sock_write_iter (net/socket.c:1269)
[   10.583050][  T245]  ? move_addr_to_kernel (net/socket.c:258)
[   10.583057][  T245]  ___sys_sendmsg (net/socket.c:2767)
[   10.583060][  T245]  ? copy_msghdr_from_user (net/socket.c:2619)
[   10.583075][  T245]  __sys_sendmsg (net/socket.c:2799)
[   10.583078][  T245]  ? __sys_sendmsg_sock (net/socket.c:2780)
[   10.583084][  T245]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   10.583087][  T245]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   10.583090][  T245]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   10.583093][  T245]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   10.583095][  T245] RIP: 0033:0x7fdee81c054e
[   10.583098][  T245] 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
[   10.583100][  T245] RSP: 002b:00007ffc41a7dac0 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
[   10.583102][  T245] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007fdee81c054e
[   10.583104][  T245] RDX: 0000000000000000 RSI: 00007ffc41a7db70 RDI: 0000000000000005
[   10.583105][  T245] RBP: 00007ffc41a7dad0 R08: 0000000000000000 R09: 0000000000000000
[   10.583105][  T245] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a919a43
[   10.583106][  T245] R13: 00000000004a1620 R14: 0000000000000000 R15: 00007ffc41a7e240
| [   12.775450][  T292] softirqs last disabled at (27762): addrconf_ifdown.isra.0 (net/ipv6/addrconf.c:3946)
| [   12.775452][  T292] Preemption disabled at:
| [   12.775453][  T292] vprintk_emit (kernel/printk/printk.c:2471)
| [   12.775462][  T292] Tainted: [W]=WARN
[   12.775463][  T292] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   12.775465][  T292] Call Trace:
[   12.775466][  T292]  <TASK>
[   12.775468][  T292]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   12.775474][  T292]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   12.775475][  T292]  __might_resched.cold (kernel/sched/core.c:9234)
[   12.775480][  T292]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   12.775484][  T292]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   12.775488][  T292]  __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))
[   12.775490][  T292]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   12.775496][  T292]  ? 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)
[   12.775499][  T292]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   12.775503][  T292]  put_chars (drivers/char/virtio_console.c:1176)
[   12.775505][  T292]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   12.775506][  T292]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   12.775510][  T292]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   12.775515][  T292]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   12.775523][  T292]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   12.775525][  T292]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   12.775527][  T292]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   12.775531][  T292]  console_emit_next_record (kernel/printk/printk.c:3183)
[   12.775535][  T292]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   12.775537][  T292]  ? 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))
[   12.775540][  T292]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   12.775542][  T292]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   12.775546][  T292]  console_flush_one_record (kernel/printk/printk.c:3268)
[   12.775550][  T292]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   12.775552][  T292]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   12.775557][  T292]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   12.775559][  T292]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   12.775561][  T292]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   12.775563][  T292]  ? 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)
[   12.775566][  T292]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   12.775568][  T292]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   12.775571][  T292]  vprintk_emit (kernel/printk/printk.c:2479)
[   12.775574][  T292]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   12.775575][  T292]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   12.775577][  T292]  ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:211 (discriminator 1) kernel/locking/spinlock.c:221 (discriminator 1))
[   12.775581][  T292]  ? mark_held_locks (kernel/locking/lockdep.c:4341)
[   12.775585][  T292]  _printk (kernel/printk/printk.c:2504)
[   12.775588][  T292]  ? snapshot_read.cold (user.c:?)
[   12.775592][  T292]  ? br_multicast_flood (??:?)
[   12.775595][  T292]  ? do_setlink.isra.0 (net/core/rtnetlink.c:3273 (discriminator 1))
[   12.775596][  T292]  ? rtnl_newlink (net/core/rtnetlink.c:4215)
[   12.775597][  T292]  ? rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   12.775601][  T292]  br_set_state (net/bridge/br_stp.c:57 (discriminator 2))
[   12.775605][  T292]  br_init_port (net/bridge/br_stp_if.c:39)
[   12.775608][  T292]  new_nbp (net/bridge/br_if.c:449)
[   12.775611][  T292]  br_add_if (net/bridge/br_if.c:592)
[   12.775614][  T292]  ? sync_rcu_exp_select_cpus (./include/linux/list.h:54 (discriminator 2))
[   12.775616][  T292]  ? __netdev_upper_dev_unlink (net/core/dev.c:9096)
[   12.775619][  T292]  ? kernel_text_address (kernel/extable.c:125 kernel/extable.c:94)
[   12.775622][  T292]  ? 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)
[   12.775627][  T292]  ? vrf_del_slave (drivers/net/vrf.c:1068 drivers/net/vrf.c:1075)
[   12.775629][  T292]  do_set_master (net/core/rtnetlink.c:3071)
[   12.775633][  T292]  do_setlink.isra.0 (net/core/rtnetlink.c:3273 (discriminator 1))
[   12.775636][  T292]  ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1))
[   12.775639][  T292]  ? rtnl_link_get_size (net/core/rtnetlink.c:747)
[   12.775640][  T292]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380)
[   12.775643][  T292]  ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2))
[   12.775646][  T292]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   12.775648][  T292]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   12.775650][  T292]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   12.775652][  T292]  ? kasan_save_stack (mm/kasan/common.c:58)
[   12.775655][  T292]  ? kasan_save_stack (mm/kasan/common.c:57)
[   12.775656][  T292]  ? kasan_save_track (mm/kasan/common.c:78)
[   12.775657][  T292]  ? __kasan_kmalloc (mm/kasan/common.c:398 mm/kasan/common.c:415)
[   12.775659][  T292]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   12.775661][  T292]  ? snd_ac97_proc_read_main (sound/pci/ac97/ac97_proc.c:320)
[   12.775664][  T292]  ? ___sys_sendmsg (net/socket.c:2758)
[   12.775668][  T292]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   12.775670][  T292]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   12.775672][  T292]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   12.775674][  T292]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   12.775675][  T292]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   12.775677][  T292]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   12.775678][  T292]  ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22))
[   12.775680][  T292]  ? __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)
[   12.775682][  T292]  ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1))
[   12.775684][  T292]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   12.775687][  T292]  ? ww_mutex_lock (kernel/locking/mutex.c:934)
[   12.775688][  T292]  ? nla_get_range_signed (lib/nlattr.c:270)
[   12.775693][  T292]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   12.775695][  T292]  ? __rtnl_newlink (net/core/rtnetlink.c:4063)
[   12.775700][  T292]  rtnl_newlink (net/core/rtnetlink.c:4215)
[   12.775705][  T292]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   12.775707][  T292]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   12.775711][  T292]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   12.775713][  T292]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   12.775715][  T292]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   12.775717][  T292]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   12.775721][  T292]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   12.775723][  T292]  rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   12.775726][  T292]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   12.775727][  T292]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   12.775731][  T292]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   12.775733][  T292]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   12.775736][  T292]  netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   12.775739][  T292]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   12.775742][  T292]  ? netlink_ack (./include/linux/skbuff.h:2718)
[   12.775748][  T292]  ? 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))
[   12.775751][  T292]  ? 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))
[   12.775755][  T292]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   12.775759][  T292]  ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   12.775761][  T292]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   12.775765][  T292]  netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   12.775769][  T292]  ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7))
[   12.775773][  T292]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   12.775774][  T292]  ? __import_iovec (lib/iov_iter.c:1358 lib/iov_iter.c:1373)
[   12.775780][  T292]  __sock_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4))
[   12.775782][  T292]  ____sys_sendmsg (net/socket.c:2713)
[   12.775784][  T292]  ? copy_msghdr_from_user (net/socket.c:2650)
[   12.775787][  T292]  ? sock_write_iter (net/socket.c:1269)
[   12.775788][  T292]  ? move_addr_to_kernel (net/socket.c:258)
[   12.775795][  T292]  ___sys_sendmsg (net/socket.c:2767)
[   12.775798][  T292]  ? copy_msghdr_from_user (net/socket.c:2619)
[   12.775813][  T292]  __sys_sendmsg (net/socket.c:2799)
[   12.775816][  T292]  ? __sys_sendmsg_sock (net/socket.c:2780)
[   12.775822][  T292]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   12.775825][  T292]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   12.775828][  T292]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   12.775831][  T292]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   12.775833][  T292] RIP: 0033:0x7f717cb0254e
[   12.775837][  T292] 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
[   12.775839][  T292] RSP: 002b:00007ffcc46e5ed0 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
[   12.775841][  T292] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f717cb0254e
[   12.775843][  T292] RDX: 0000000000000000 RSI: 00007ffcc46e5f80 RDI: 0000000000000005
[   12.775844][  T292] RBP: 00007ffcc46e5ee0 R08: 0000000000000000 R09: 0000000000000000
[   12.775844][  T292] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a919a46
[   12.775845][  T292] R13: 00000000004a1620 R14: 0000000000000000 R15: 00007ffcc46e6640
| [   19.347997][  T340] softirqs last disabled at (36928): br_stp_disable_bridge (./include/linux/spinlock.h:353 net/bridge/br_stp_if.c:73)
| [   19.347999][  T340] Preemption disabled at:
| [   19.347999][  T340] 0x0
| [   19.348010][  T340] Tainted: [W]=WARN
[   19.348011][  T340] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   19.348013][  T340] Call Trace:
[   19.348015][  T340]  <TASK>
[   19.348016][  T340]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   19.348023][  T340]  __might_resched.cold (kernel/sched/core.c:9234)
[   19.348027][  T340]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   19.348031][  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)
[   19.348036][  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))
[   19.348038][  T340]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   19.348044][  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)
[   19.348047][  T340]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   19.348050][  T340]  put_chars (drivers/char/virtio_console.c:1176)
[   19.348052][  T340]  ? prb_final_commit (kernel/printk/printk_ringbuffer.c:1842)
[   19.348054][  T340]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   19.348057][  T340]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   19.348060][  T340]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   19.348063][  T340]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   19.348067][  T340]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   19.348071][  T340]  ? mark_usage (kernel/locking/lockdep.c:4690)
[   19.348073][  T340]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   19.348075][  T340]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   19.348079][  T340]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   19.348081][  T340]  ? console_emit_next_record (kernel/printk/printk.c:3095 (discriminator 2) kernel/printk/printk.c:3182 (discriminator 2))
[   19.348084][  T340]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   19.348086][  T340]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   19.348090][  T340]  console_emit_next_record (kernel/printk/printk.c:3183)
[   19.348094][  T340]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   19.348096][  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))
[   19.348099][  T340]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   19.348101][  T340]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   19.348105][  T340]  console_flush_one_record (kernel/printk/printk.c:3268)
[   19.348109][  T340]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   19.348111][  T340]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   19.348116][  T340]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   19.348119][  T340]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   19.348121][  T340]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   19.348122][  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)
[   19.348126][  T340]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   19.348128][  T340]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   19.348130][  T340]  vprintk_emit (kernel/printk/printk.c:2479)
[   19.348134][  T340]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   19.348136][  T340]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   19.348138][  T340]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   19.348141][  T340]  _printk (kernel/printk/printk.c:2504)
[   19.348145][  T340]  ? snapshot_read.cold (user.c:?)
[   19.348152][  T340]  br_set_state (net/bridge/br_stp.c:57 (discriminator 2))
[   19.348157][  T340]  br_stp_disable_port (net/bridge/br_stp_if.c:106)
[   19.348160][  T340]  br_stp_disable_bridge (net/bridge/br_stp_if.c:76)
[   19.348162][  T340]  br_dev_stop (net/bridge/br_device.c:193)
[   19.348165][  T340]  ? rtnl_is_locked (net/core/rtnetlink.c:169)
[   19.348168][  T340]  __dev_close_many (net/core/dev.c:1798)
[   19.348173][  T340]  ? netif_open (net/core/dev.c:1755)
[   19.348174][  T340]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   19.348177][  T340]  ? mark_held_locks (kernel/locking/lockdep.c:4341)
[   19.348181][  T340]  __dev_change_flags (net/core/dev.c:1811 net/core/dev.c:9810)
[   19.348185][  T340]  ? netif_set_allmulti (./include/net/netdev_lock.h:33)
[   19.348188][  T340]  ? synchronize_rcu_normal (kernel/rcu/tree.c:3360)
[   19.348192][  T340]  netif_change_flags (net/core/dev.c:9877)
[   19.348196][  T340]  dev_change_flags (net/core/dev_api.c:68)
[   19.348197][  T340]  ? kernel_text_address (kernel/extable.c:125 kernel/extable.c:94)
[   19.348201][  T340]  cycle_netdev (drivers/net/vrf.c:1001)
[   19.348206][  T340]  vrf_del_slave (drivers/net/vrf.c:1068 drivers/net/vrf.c:1075)
[   19.348208][  T340]  do_set_master (net/core/rtnetlink.c:3055)
[   19.348211][  T340]  do_setlink.isra.0 (net/core/rtnetlink.c:3273 (discriminator 1))
[   19.348215][  T340]  ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1))
[   19.348218][  T340]  ? rtnl_link_get_size (net/core/rtnetlink.c:747)
[   19.348220][  T340]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380)
[   19.348221][  T340]  ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2))
[   19.348225][  T340]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   19.348227][  T340]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   19.348228][  T340]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   19.348231][  T340]  ? kasan_save_stack (mm/kasan/common.c:58)
[   19.348233][  T340]  ? kasan_save_stack (mm/kasan/common.c:57)
[   19.348234][  T340]  ? kasan_save_track (mm/kasan/common.c:78)
[   19.348236][  T340]  ? __kasan_kmalloc (mm/kasan/common.c:398 mm/kasan/common.c:415)
[   19.348238][  T340]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   19.348240][  T340]  ? snd_ac97_proc_read_main (sound/pci/ac97/ac97_proc.c:320)
[   19.348242][  T340]  ? ___sys_sendmsg (net/socket.c:2758)
[   19.348246][  T340]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   19.348248][  T340]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   19.348251][  T340]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   19.348252][  T340]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   19.348254][  T340]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   19.348255][  T340]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   19.348257][  T340]  ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22))
[   19.348259][  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)
[   19.348262][  T340]  ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1))
[   19.348263][  T340]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   19.348267][  T340]  ? ww_mutex_lock (kernel/locking/mutex.c:934)
[   19.348268][  T340]  ? nla_get_range_signed (lib/nlattr.c:270)
[   19.348273][  T340]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   19.348275][  T340]  ? __rtnl_newlink (net/core/rtnetlink.c:4063)
[   19.348280][  T340]  rtnl_newlink (net/core/rtnetlink.c:4215)
[   19.348285][  T340]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   19.348287][  T340]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   19.348292][  T340]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   19.348294][  T340]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   19.348296][  T340]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   19.348298][  T340]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   19.348301][  T340]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   19.348303][  T340]  rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   19.348306][  T340]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   19.348308][  T340]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   19.348312][  T340]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   19.348314][  T340]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   19.348317][  T340]  netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   19.348320][  T340]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   19.348323][  T340]  ? netlink_ack (./include/linux/skbuff.h:2718)
[   19.348329][  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))
[   19.348331][  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))
[   19.348336][  T340]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   19.348340][  T340]  ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   19.348342][  T340]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   19.348346][  T340]  netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   19.348350][  T340]  ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7))
[   19.348354][  T340]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   19.348355][  T340]  ? __import_iovec (lib/iov_iter.c:1358 lib/iov_iter.c:1373)
[   19.348365][  T340]  __sock_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4))
[   19.348368][  T340]  ____sys_sendmsg (net/socket.c:2713)
[   19.348370][  T340]  ? copy_msghdr_from_user (net/socket.c:2650)
[   19.348372][  T340]  ? sock_write_iter (net/socket.c:1269)
[   19.348374][  T340]  ? move_addr_to_kernel (net/socket.c:258)
[   19.348381][  T340]  ___sys_sendmsg (net/socket.c:2767)
[   19.348384][  T340]  ? copy_msghdr_from_user (net/socket.c:2619)
[   19.348399][  T340]  __sys_sendmsg (net/socket.c:2799)
[   19.348402][  T340]  ? __sys_sendmsg_sock (net/socket.c:2780)
[   19.348408][  T340]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   19.348411][  T340]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   19.348414][  T340]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   19.348417][  T340]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   19.348419][  T340] RIP: 0033:0x7fc85420454e
[   19.348421][  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
[   19.348423][  T340] RSP: 002b:00007ffd84e3a4e0 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
[   19.348425][  T340] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007fc85420454e
[   19.348427][  T340] RDX: 0000000000000000 RSI: 00007ffd84e3a590 RDI: 0000000000000005
[   19.348428][  T340] RBP: 00007ffd84e3a4f0 R08: 0000000000000000 R09: 0000000000000000
[   19.348428][  T340] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a919a4c
[   19.348429][  T340] R13: 00000000004a1620 R14: 0000000000000000 R15: 00007ffd84e3ac50
| [   22.123209][  T399] softirqs last disabled at (37650): __alloc_skb (./include/linux/bottom_half.h:20 (discriminator 2) net/core/skbuff.c:697 (discriminator 2))
| [   22.123211][  T399] Preemption disabled at:
| [   22.123212][  T399] vprintk_emit (kernel/printk/printk.c:2471)
| [   22.123220][  T399] Tainted: [W]=WARN
[   22.123221][  T399] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   22.123223][  T399] Call Trace:
[   22.123224][  T399]  <TASK>
[   22.123226][  T399]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   22.123232][  T399]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   22.123233][  T399]  __might_resched.cold (kernel/sched/core.c:9234)
[   22.123238][  T399]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   22.123242][  T399]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   22.123246][  T399]  __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))
[   22.123248][  T399]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   22.123255][  T399]  ? 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)
[   22.123257][  T399]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   22.123261][  T399]  put_chars (drivers/char/virtio_console.c:1176)
[   22.123263][  T399]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   22.123270][  T399]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   22.123277][  T399]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   22.123280][  T399]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   22.123285][  T399]  console_emit_next_record (kernel/printk/printk.c:3183)
[   22.123289][  T399]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   22.123291][  T399]  ? 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))
[   22.123294][  T399]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   22.123296][  T399]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   22.123300][  T399]  console_flush_one_record (kernel/printk/printk.c:3268)
[   22.123304][  T399]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   22.123306][  T399]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   22.123312][  T399]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   22.123314][  T399]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   22.123316][  T399]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   22.123318][  T399]  ? 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)
[   22.123322][  T399]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   22.123323][  T399]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   22.123326][  T399]  vprintk_emit (kernel/printk/printk.c:2479)
[   22.123329][  T399]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   22.123330][  T399]  ? netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   22.123334][  T399]  ? netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   22.123335][  T399]  ? __sock_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4))
[   22.123338][  T399]  ? ____sys_sendmsg (net/socket.c:2713)
[   22.123339][  T399]  ? ___sys_sendmsg (net/socket.c:2767)
[   22.123341][  T399]  ? __sys_sendmsg (net/socket.c:2799)
[   22.123343][  T399]  ? do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   22.123348][  T399]  _printk (kernel/printk/printk.c:2504)
[   22.123351][  T399]  ? snapshot_read.cold (user.c:?)
[   22.123356][  T399]  ? netdev_name (./include/linux/netdevice.h:5709 (discriminator 1))
[   22.123360][  T399]  ? __netdev_printk (net/core/dev.c:13148 (discriminator 2))
[   22.123363][  T399]  netdev_info (net/core/dev.c:13195 (discriminator 3))
[   22.123366][  T399]  ? netdev_notice (net/core/dev.c:13194)
[   22.123375][  T399]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   22.123377][  T399]  ? __up_read (kernel/locking/rwsem.c:1397 (discriminator 1))
[   22.123379][  T399]  ? down_write_nested (kernel/locking/rwsem.c:1759)
[   22.123381][  T399]  ? 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)
[   22.123383][  T399]  netif_set_allmulti.cold (net/core/dev.c:9731 (discriminator 3))
[   22.123387][  T399]  dev_set_allmulti (net/core/dev_api.c:315)
[   22.123391][  T399]  del_nbp (net/bridge/br_if.c:253 net/bridge/br_if.c:341)
[   22.123394][  T399]  ? __asan_memset (mm/kasan/shadow.c:84 (discriminator 1))
[   22.123399][  T399]  br_dev_delete (net/bridge/br_if.c:387)
[   22.123403][  T399]  rtnl_dellink (net/core/rtnetlink.c:3651 net/core/rtnetlink.c:3694)
[   22.123405][  T399]  ? mark_usage (kernel/locking/lockdep.c:4690)
[   22.123406][  T399]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   22.123408][  T399]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   22.123410][  T399]  ? rtnl_link_get_net_capable.constprop.0 (net/core/rtnetlink.c:2728)
[   22.123431][  T399]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   22.123433][  T399]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   22.123436][  T399]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   22.123438][  T399]  ? mark_usage (kernel/locking/lockdep.c:4690)
[   22.123440][  T399]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   22.123444][  T399]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   22.123446][  T399]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   22.123448][  T399]  ? rtnl_link_get_net_capable.constprop.0 (net/core/rtnetlink.c:2728)
[   22.123450][  T399]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   22.123453][  T399]  ? rtnl_link_get_net_capable.constprop.0 (net/core/rtnetlink.c:2728)
[   22.123455][  T399]  rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   22.123458][  T399]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   22.123460][  T399]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   22.123464][  T399]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   22.123466][  T399]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   22.123470][  T399]  netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   22.123471][  T399]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   22.123474][  T399]  ? netlink_ack (./include/linux/skbuff.h:2718)
[   22.123480][  T399]  ? 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))
[   22.123482][  T399]  ? 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))
[   22.123487][  T399]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   22.123490][  T399]  ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   22.123493][  T399]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   22.123497][  T399]  netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   22.123501][  T399]  ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7))
[   22.123505][  T399]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   22.123506][  T399]  ? __import_iovec (lib/iov_iter.c:1358 lib/iov_iter.c:1373)
[   22.123512][  T399]  __sock_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4))
[   22.123514][  T399]  ____sys_sendmsg (net/socket.c:2713)
[   22.123516][  T399]  ? copy_msghdr_from_user (net/socket.c:2650)
[   22.123519][  T399]  ? sock_write_iter (net/socket.c:1269)
[   22.123520][  T399]  ? move_addr_to_kernel (net/socket.c:258)
[   22.123527][  T399]  ___sys_sendmsg (net/socket.c:2767)
[   22.123530][  T399]  ? copy_msghdr_from_user (net/socket.c:2619)
[   22.123545][  T399]  __sys_sendmsg (net/socket.c:2799)
[   22.123548][  T399]  ? __sys_sendmsg_sock (net/socket.c:2780)
[   22.123554][  T399]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   22.123557][  T399]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   22.123559][  T399]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   22.123562][  T399]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   22.123564][  T399] RIP: 0033:0x7ff7f9d4554e
[   22.123568][  T399] 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
[   22.123570][  T399] RSP: 002b:00007fff40dca070 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
[   22.123572][  T399] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007ff7f9d4554e
[   22.123574][  T399] RDX: 0000000000000000 RSI: 00007fff40dca120 RDI: 0000000000000005
[   22.123574][  T399] RBP: 00007fff40dca080 R08: 0000000000000000 R09: 0000000000000000
[   22.123575][  T399] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a919a4f
[   22.123576][  T399] R13: 00000000004a1620 R14: 0000000000000000 R15: 00007fff40dca7e0
| [   24.583164][  T488] softirqs last disabled at (26320): netif_change_name (./include/linux/spinlock.h:353 ./include/linux/seqlock.h:908 net/core/dev.c:1499)
| [   24.583167][  T488] Preemption disabled at:
| [   24.583168][  T488] vprintk_emit (kernel/printk/printk.c:2471)
| [   24.583176][  T488] Tainted: [W]=WARN
[   24.583177][  T488] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   24.583178][  T488] Call Trace:
[   24.583180][  T488]  <TASK>
[   24.583181][  T488]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   24.583187][  T488]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   24.583189][  T488]  __might_resched.cold (kernel/sched/core.c:9234)
[   24.583193][  T488]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   24.583197][  T488]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   24.583202][  T488]  __kmalloc_noprof (./include/linux/sched/mm.h:322 (discriminator 2) mm/slub.c:4636 (discriminator 2) mm/slub.c:4974 (discriminator 2) mm/slub.c:5413 (discriminator 2) mm/slub.c:5439 (discriminator 2))
[   24.583203][  T488]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   24.583210][  T488]  ? do_raw_spin_unlock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:32 ./include/asm-generic/qspinlock.h:58 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141)
[   24.583213][  T488]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   24.583216][  T488]  put_chars (drivers/char/virtio_console.c:1176)
[   24.583218][  T488]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   24.583224][  T488]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   24.583232][  T488]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   24.583235][  T488]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   24.583239][  T488]  console_emit_next_record (kernel/printk/printk.c:3183)
[   24.583243][  T488]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   24.583245][  T488]  ? console_flush_one_record (./include/linux/rcupdate.h:314 (discriminator 2) ./include/linux/srcu.h:439 (discriminator 2) kernel/printk/printk.c:291 (discriminator 2) kernel/printk/printk.c:3246 (discriminator 2))
[   24.583248][  T488]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   24.583251][  T488]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   24.583255][  T488]  console_flush_one_record (kernel/printk/printk.c:3268)
[   24.583259][  T488]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   24.583261][  T488]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   24.583266][  T488]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   24.583268][  T488]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   24.583270][  T488]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   24.583272][  T488]  ? lock_acquire (./include/linux/srcutree.h:374 ./include/linux/srcu.h:541 ./include/linux/srcu.h:645 ./include/trace/events/lock.h:23 ./include/trace/events/lock.h:23 kernel/locking/lockdep.c:5871)
[   24.583275][  T488]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   24.583277][  T488]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   24.583280][  T488]  vprintk_emit (kernel/printk/printk.c:2479)
[   24.583283][  T488]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   24.583285][  T488]  ? _mutex_trylock_nest_lock (kernel/locking/mutex.c:1227 (discriminator 6))
[   24.583290][  T488]  _printk (kernel/printk/printk.c:2504)
[   24.583294][  T488]  ? snapshot_read.cold (user.c:?)
[   24.583296][  T488]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   24.583298][  T488]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   24.583301][  T488]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   24.583303][  T488]  ? netdev_name (./include/linux/netdevice.h:5709 (discriminator 1))
[   24.583307][  T488]  ? __netdev_printk (net/core/dev.c:13148 (discriminator 2))
[   24.583310][  T488]  ? do_setlink.isra.0 (net/core/rtnetlink.c:3246)
[   24.583312][  T488]  netdev_info (net/core/dev.c:13195 (discriminator 3))
[   24.583315][  T488]  ? netdev_notice (net/core/dev.c:13194)
[   24.583317][  T488]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   24.583320][  T488]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   24.583323][  T488]  ? mark_held_locks (kernel/locking/lockdep.c:4341)
[   24.583326][  T488]  ? do_setlink.isra.0 (net/core/rtnetlink.c:3246)
[   24.583328][  T488]  netif_change_name.cold (net/core/dev.c:1507 (discriminator 3))
[   24.583330][  T488]  ? register_netdev (net/core/dev.c:11618)
[   24.583332][  T488]  ? 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))
[   24.583337][  T488]  ? netdev_adjacent_rename_links (net/core/dev.c:9598)
[   24.583339][  T488]  ? __kernel_text_address (kernel/extable.c:79)
[   24.583342][  T488]  ? write_profile (profile.c:?)
[   24.583346][  T488]  ? __asan_memset (mm/kasan/shadow.c:84 (discriminator 1))
[   24.583351][  T488]  do_setlink.isra.0 (net/core/rtnetlink.c:3246)
[   24.583355][  T488]  ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1))
[   24.583357][  T488]  ? rtnl_link_get_size (net/core/rtnetlink.c:747)
[   24.583358][  T488]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380)
[   24.583360][  T488]  ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2))
[   24.583363][  T488]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   24.583365][  T488]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   24.583367][  T488]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   24.583369][  T488]  ? kasan_save_stack (mm/kasan/common.c:58)
[   24.583371][  T488]  ? kasan_save_stack (mm/kasan/common.c:57)
[   24.583372][  T488]  ? kasan_save_track (mm/kasan/common.c:78)
[   24.583373][  T488]  ? __kasan_kmalloc (mm/kasan/common.c:398 mm/kasan/common.c:415)
[   24.583376][  T488]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   24.583377][  T488]  ? snd_ac97_proc_read_main (sound/pci/ac97/ac97_proc.c:320)
[   24.583380][  T488]  ? ___sys_sendmsg (net/socket.c:2758)
[   24.583388][  T488]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   24.583390][  T488]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   24.583393][  T488]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   24.583395][  T488]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   24.583396][  T488]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   24.583397][  T488]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   24.583399][  T488]  ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22))
[   24.583401][  T488]  ? __mutex_lock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:3188 kernel/locking/mutex.c:89 kernel/locking/mutex.c:134 kernel/locking/mutex.c:649 kernel/locking/mutex.c:821)
[   24.583403][  T488]  ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1))
[   24.583404][  T488]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   24.583408][  T488]  ? ww_mutex_lock (kernel/locking/mutex.c:934)
[   24.583409][  T488]  ? nla_get_range_signed (lib/nlattr.c:270)
[   24.583414][  T488]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   24.583416][  T488]  ? __rtnl_newlink (net/core/rtnetlink.c:4063)
[   24.583421][  T488]  rtnl_newlink (net/core/rtnetlink.c:4215)
[   24.583426][  T488]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   24.583428][  T488]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   24.583432][  T488]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   24.583434][  T488]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   24.583436][  T488]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   24.583438][  T488]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   24.583441][  T488]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   24.583443][  T488]  rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   24.583447][  T488]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   24.583448][  T488]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   24.583452][  T488]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   24.583454][  T488]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   24.583457][  T488]  netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   24.583461][  T488]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   24.583463][  T488]  ? netlink_ack (./include/linux/skbuff.h:2718)
[   24.583470][  T488]  ? netlink_deliver_tap (./include/linux/rcupdate.h:319 (discriminator 2) ./include/linux/rcupdate.h:880 (discriminator 2) ./include/net/netns/generic.h:48 (discriminator 2) net/netlink/af_netlink.c:334 (discriminator 2))
[   24.583472][  T488]  ? netlink_deliver_tap (./include/linux/rcupdate.h:319 (discriminator 2) ./include/linux/rcupdate.h:880 (discriminator 2) net/netlink/af_netlink.c:341 (discriminator 2))
[   24.583476][  T488]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   24.583480][  T488]  ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   24.583482][  T488]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   24.583486][  T488]  netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   24.583490][  T488]  ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7))
[   24.583494][  T488]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   24.583495][  T488]  ? __import_iovec (lib/iov_iter.c:1358 lib/iov_iter.c:1373)
[   24.583501][  T488]  __sock_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4))
[   24.583503][  T488]  ____sys_sendmsg (net/socket.c:2713)
[   24.583506][  T488]  ? copy_msghdr_from_user (net/socket.c:2650)
[   24.583508][  T488]  ? sock_write_iter (net/socket.c:1269)
[   24.583509][  T488]  ? move_addr_to_kernel (net/socket.c:258)
[   24.583516][  T488]  ___sys_sendmsg (net/socket.c:2767)
[   24.583519][  T488]  ? copy_msghdr_from_user (net/socket.c:2619)
[   24.583534][  T488]  __sys_sendmsg (net/socket.c:2799)
[   24.583538][  T488]  ? __sys_sendmsg_sock (net/socket.c:2780)
[   24.583544][  T488]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   24.583546][  T488]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   24.583549][  T488]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   24.583552][  T488]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   24.583555][  T488] RIP: 0033:0x7fe180ad254e
[   24.583558][  T488] Code: 4d 89 d8 e8 b4 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 03 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 b4 bd 00 00       	call   0xbdbc
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 03 ff ff ff       	call   0xffffffffffffff3c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 03 ff ff ff       	call   0xffffffffffffff12
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[   24.583560][  T488] RSP: 002b:00007ffd2b6c38b0 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
[   24.583562][  T488] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007fe180ad254e
[   24.583564][  T488] RDX: 0000000000000000 RSI: 00007ffd2b6c3960 RDI: 0000000000000005
[   24.583565][  T488] RBP: 00007ffd2b6c38c0 R08: 0000000000000000 R09: 0000000000000000
[   24.583566][  T488] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a919a51
[   24.583567][  T488] R13: 00000000004a1620 R14: 0000000000000000 R15: 00007ffd2b6c4030
| [   32.766489][  T679] softirqs last disabled at (18256): netif_change_name (./include/linux/spinlock.h:353 ./include/linux/seqlock.h:908 net/core/dev.c:1499)
| [   32.766492][  T679] Preemption disabled at:
| [   32.766492][  T679] vprintk_emit (kernel/printk/printk.c:2471)
| [   32.766501][  T679] Tainted: [W]=WARN
[   32.766502][  T679] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   32.766503][  T679] Call Trace:
[   32.766505][  T679]  <TASK>
[   32.766506][  T679]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   32.766513][  T679]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   32.766514][  T679]  __might_resched.cold (kernel/sched/core.c:9234)
[   32.766518][  T679]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   32.766522][  T679]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   32.766527][  T679]  __kmalloc_noprof (./include/linux/sched/mm.h:322 (discriminator 2) mm/slub.c:4636 (discriminator 2) mm/slub.c:4974 (discriminator 2) mm/slub.c:5413 (discriminator 2) mm/slub.c:5439 (discriminator 2))
[   32.766528][  T679]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   32.766534][  T679]  ? do_raw_spin_unlock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:32 ./include/asm-generic/qspinlock.h:58 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141)
[   32.766537][  T679]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   32.766541][  T679]  put_chars (drivers/char/virtio_console.c:1176)
[   32.766543][  T679]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   32.766549][  T679]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   32.766557][  T679]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   32.766560][  T679]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   32.766564][  T679]  console_emit_next_record (kernel/printk/printk.c:3183)
[   32.766568][  T679]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   32.766570][  T679]  ? console_flush_one_record (./include/linux/rcupdate.h:314 (discriminator 2) ./include/linux/srcu.h:439 (discriminator 2) kernel/printk/printk.c:291 (discriminator 2) kernel/printk/printk.c:3246 (discriminator 2))
[   32.766573][  T679]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   32.766576][  T679]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   32.766580][  T679]  console_flush_one_record (kernel/printk/printk.c:3268)
[   32.766584][  T679]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   32.766586][  T679]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   32.766591][  T679]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   32.766594][  T679]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   32.766595][  T679]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   32.766597][  T679]  ? lock_acquire (./include/linux/srcutree.h:374 ./include/linux/srcu.h:541 ./include/linux/srcu.h:645 ./include/trace/events/lock.h:23 ./include/trace/events/lock.h:23 kernel/locking/lockdep.c:5871)
[   32.766601][  T679]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   32.766602][  T679]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   32.766605][  T679]  vprintk_emit (kernel/printk/printk.c:2479)
[   32.766608][  T679]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   32.766611][  T679]  ? _mutex_trylock_nest_lock (kernel/locking/mutex.c:1227 (discriminator 6))
[   32.766616][  T679]  _printk (kernel/printk/printk.c:2504)
[   32.766619][  T679]  ? snapshot_read.cold (user.c:?)
[   32.766621][  T679]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   32.766623][  T679]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   32.766626][  T679]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   32.766628][  T679]  ? netdev_name (./include/linux/netdevice.h:5709 (discriminator 1))
[   32.766632][  T679]  ? __netdev_printk (net/core/dev.c:13148 (discriminator 2))
[   32.766635][  T679]  ? do_setlink.isra.0 (net/core/rtnetlink.c:3246)
[   32.766637][  T679]  netdev_info (net/core/dev.c:13195 (discriminator 3))
[   32.766640][  T679]  ? netdev_notice (net/core/dev.c:13194)
[   32.766642][  T679]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   32.766645][  T679]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   32.766647][  T679]  ? mark_held_locks (kernel/locking/lockdep.c:4341)
[   32.766651][  T679]  ? do_setlink.isra.0 (net/core/rtnetlink.c:3246)
[   32.766653][  T679]  netif_change_name.cold (net/core/dev.c:1507 (discriminator 3))
[   32.766655][  T679]  ? register_netdev (net/core/dev.c:11618)
[   32.766656][  T679]  ? 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))
[   32.766661][  T679]  ? netdev_adjacent_rename_links (net/core/dev.c:9598)
[   32.766664][  T679]  ? __kernel_text_address (kernel/extable.c:79)
[   32.766666][  T679]  ? write_profile (profile.c:?)
[   32.766670][  T679]  ? __asan_memset (mm/kasan/shadow.c:84 (discriminator 1))
[   32.766676][  T679]  do_setlink.isra.0 (net/core/rtnetlink.c:3246)
[   32.766679][  T679]  ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1))
[   32.766681][  T679]  ? rtnl_link_get_size (net/core/rtnetlink.c:747)
[   32.766682][  T679]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380)
[   32.766684][  T679]  ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2))
[   32.766687][  T679]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   32.766689][  T679]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   32.766691][  T679]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   32.766693][  T679]  ? kasan_save_stack (mm/kasan/common.c:58)
[   32.766695][  T679]  ? kasan_save_stack (mm/kasan/common.c:57)
[   32.766696][  T679]  ? kasan_save_track (mm/kasan/common.c:78)
[   32.766697][  T679]  ? __kasan_kmalloc (mm/kasan/common.c:398 mm/kasan/common.c:415)
[   32.766700][  T679]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   32.766702][  T679]  ? snd_ac97_proc_read_main (sound/pci/ac97/ac97_proc.c:320)
[   32.766704][  T679]  ? ___sys_sendmsg (net/socket.c:2758)
[   32.766708][  T679]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   32.766710][  T679]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   32.766712][  T679]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   32.766714][  T679]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   32.766716][  T679]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   32.766717][  T679]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   32.766718][  T679]  ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22))
[   32.766720][  T679]  ? __mutex_lock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:3188 kernel/locking/mutex.c:89 kernel/locking/mutex.c:134 kernel/locking/mutex.c:649 kernel/locking/mutex.c:821)
[   32.766722][  T679]  ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1))
[   32.766723][  T679]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   32.766727][  T679]  ? ww_mutex_lock (kernel/locking/mutex.c:934)
[   32.766728][  T679]  ? nla_get_range_signed (lib/nlattr.c:270)
[   32.766732][  T679]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   32.766734][  T679]  ? __rtnl_newlink (net/core/rtnetlink.c:4063)
[   32.766739][  T679]  rtnl_newlink (net/core/rtnetlink.c:4215)
[   32.766745][  T679]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   32.766746][  T679]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   32.766751][  T679]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   32.766752][  T679]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   32.766754][  T679]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   32.766756][  T679]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   32.766760][  T679]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   32.766762][  T679]  rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   32.766765][  T679]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   32.766766][  T679]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   32.766770][  T679]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   32.766772][  T679]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   32.766776][  T679]  netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   32.766779][  T679]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   32.766781][  T679]  ? netlink_ack (./include/linux/skbuff.h:2718)
[   32.766787][  T679]  ? netlink_deliver_tap (./include/linux/rcupdate.h:319 (discriminator 2) ./include/linux/rcupdate.h:880 (discriminator 2) ./include/net/netns/generic.h:48 (discriminator 2) net/netlink/af_netlink.c:334 (discriminator 2))
[   32.766790][  T679]  ? netlink_deliver_tap (./include/linux/rcupdate.h:319 (discriminator 2) ./include/linux/rcupdate.h:880 (discriminator 2) net/netlink/af_netlink.c:341 (discriminator 2))
[   32.766794][  T679]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   32.766798][  T679]  ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   32.766800][  T679]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   32.766804][  T679]  netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   32.766808][  T679]  ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7))
[   32.766812][  T679]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   32.766813][  T679]  ? __import_iovec (lib/iov_iter.c:1358 lib/iov_iter.c:1373)
[   32.766819][  T679]  __sock_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4))
[   32.766821][  T679]  ____sys_sendmsg (net/socket.c:2713)
[   32.766824][  T679]  ? copy_msghdr_from_user (net/socket.c:2650)
[   32.766826][  T679]  ? sock_write_iter (net/socket.c:1269)
[   32.766827][  T679]  ? move_addr_to_kernel (net/socket.c:258)
[   32.766834][  T679]  ___sys_sendmsg (net/socket.c:2767)
[   32.766837][  T679]  ? copy_msghdr_from_user (net/socket.c:2619)
[   32.766852][  T679]  __sys_sendmsg (net/socket.c:2799)
[   32.766855][  T679]  ? __sys_sendmsg_sock (net/socket.c:2780)
[   32.766861][  T679]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   32.766864][  T679]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   32.766867][  T679]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   32.766870][  T679]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   32.766872][  T679] RIP: 0033:0x7f38b679d54e
[   32.766876][  T679] Code: 4d 89 d8 e8 b4 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 03 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 b4 bd 00 00       	call   0xbdbc
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 03 ff ff ff       	call   0xffffffffffffff3c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 03 ff ff ff       	call   0xffffffffffffff12
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[   32.766877][  T679] RSP: 002b:00007ffd9d84e420 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
[   32.766880][  T679] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f38b679d54e
[   32.766881][  T679] RDX: 0000000000000000 RSI: 00007ffd9d84e4d0 RDI: 0000000000000005
[   32.766882][  T679] RBP: 00007ffd9d84e430 R08: 0000000000000000 R09: 0000000000000000
[   32.766883][  T679] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a919a5a


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