======================================
| [    9.364998][  T227] softirqs last disabled at (13576): __alloc_skb (./include/linux/bottom_half.h:20 (discriminator 2) net/core/skbuff.c:697 (discriminator 2))
| [    9.365000][  T227] Preemption disabled at:
| [    9.365001][  T227] vprintk_emit (kernel/printk/printk.c:2471)
| [    9.365009][  T227] Tainted: [W]=WARN
[    9.365010][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[    9.365012][  T227] Call Trace:
[    9.365013][  T227]  <TASK>
[    9.365015][  T227]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[    9.365020][  T227]  ? vprintk_emit (kernel/printk/printk.c:2471)
[    9.365022][  T227]  __might_resched.cold (kernel/sched/core.c:9234)
[    9.365026][  T227]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[    9.365030][  T227]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[    9.365035][  T227]  __kmalloc_noprof (./include/linux/sched/mm.h:322 (discriminator 2) mm/slub.c:4636 (discriminator 2) mm/slub.c:4974 (discriminator 2) mm/slub.c:5413 (discriminator 2) mm/slub.c:5439 (discriminator 2))
[    9.365036][  T227]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[    9.365043][  T227]  ? do_raw_spin_unlock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:32 ./include/asm-generic/qspinlock.h:58 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141)
[    9.365046][  T227]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[    9.365049][  T227]  put_chars (drivers/char/virtio_console.c:1176)
[    9.365051][  T227]  ? __send_to_port (drivers/char/virtio_console.c:654)
[    9.365054][  T227]  ? validate_chain (kernel/locking/lockdep.c:159 kernel/locking/lockdep.c:191 kernel/locking/lockdep.c:3928)
[    9.365059][  T227]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[    9.365067][  T227]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[    9.365070][  T227]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[    9.365072][  T227]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[    9.365076][  T227]  console_emit_next_record (kernel/printk/printk.c:3183)
[    9.365080][  T227]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[    9.365082][  T227]  ? console_flush_one_record (./include/linux/rcupdate.h:314 (discriminator 2) ./include/linux/srcu.h:439 (discriminator 2) kernel/printk/printk.c:291 (discriminator 2) kernel/printk/printk.c:3246 (discriminator 2))
[    9.365085][  T227]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[    9.365087][  T227]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[    9.365090][  T227]  console_flush_one_record (kernel/printk/printk.c:3268)
[    9.365094][  T227]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[    9.365096][  T227]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[    9.365102][  T227]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[    9.365104][  T227]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[    9.365106][  T227]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[    9.365108][  T227]  ? 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)
[    9.365111][  T227]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[    9.365113][  T227]  ? vprintk_emit (kernel/printk/printk.c:2478)
[    9.365116][  T227]  vprintk_emit (kernel/printk/printk.c:2479)
[    9.365119][  T227]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[    9.365120][  T227]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[    9.365122][  T227]  ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:211 (discriminator 1) kernel/locking/spinlock.c:221 (discriminator 1))
[    9.365126][  T227]  ? mark_held_locks (kernel/locking/lockdep.c:4341)
[    9.365130][  T227]  _printk (kernel/printk/printk.c:2504)
[    9.365133][  T227]  ? snapshot_read.cold (user.c:?)
[    9.365136][  T227]  ? br_multicast_flood (??:?)
[    9.365140][  T227]  ? do_setlink.isra.0 (net/core/rtnetlink.c:3273 (discriminator 1))
[    9.365141][  T227]  ? rtnl_newlink (net/core/rtnetlink.c:4215)
[    9.365142][  T227]  ? rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[    9.365147][  T227]  br_set_state (net/bridge/br_stp.c:57 (discriminator 2))
[    9.365151][  T227]  br_init_port (net/bridge/br_stp_if.c:39)
[    9.365153][  T227]  new_nbp (net/bridge/br_if.c:449)
[    9.365157][  T227]  br_add_if (net/bridge/br_if.c:592)
[    9.365159][  T227]  ? is_bpf_text_address (./include/linux/rcupdate.h:882 kernel/bpf/core.c:751)
[    9.365162][  T227]  ? kernel_text_address (kernel/extable.c:125 kernel/extable.c:94)
[    9.365168][  T227]  do_set_master (net/core/rtnetlink.c:3071)
[    9.365171][  T227]  do_setlink.isra.0 (net/core/rtnetlink.c:3273 (discriminator 1))
[    9.365174][  T227]  ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1))
[    9.365178][  T227]  ? rtnl_link_get_size (net/core/rtnetlink.c:747)
[    9.365179][  T227]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380)
[    9.365182][  T227]  ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2))
[    9.365185][  T227]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[    9.365187][  T227]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[    9.365189][  T227]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[    9.365191][  T227]  ? kasan_save_stack (mm/kasan/common.c:58)
[    9.365193][  T227]  ? kasan_save_stack (mm/kasan/common.c:57)
[    9.365195][  T227]  ? kasan_save_track (mm/kasan/common.c:78)
[    9.365196][  T227]  ? __kasan_kmalloc (mm/kasan/common.c:398 mm/kasan/common.c:415)
[    9.365198][  T227]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[    9.365200][  T227]  ? snd_ac97_proc_read_main (sound/pci/ac97/ac97_proc.c:320)
[    9.365203][  T227]  ? ___sys_sendmsg (net/socket.c:2758)
[    9.365207][  T227]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[    9.365209][  T227]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[    9.365211][  T227]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[    9.365213][  T227]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[    9.365214][  T227]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[    9.365215][  T227]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[    9.365217][  T227]  ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22))
[    9.365219][  T227]  ? __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)
[    9.365220][  T227]  ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1))
[    9.365222][  T227]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[    9.365225][  T227]  ? ww_mutex_lock (kernel/locking/mutex.c:934)
[    9.365227][  T227]  ? nla_get_range_signed (lib/nlattr.c:270)
[    9.365232][  T227]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[    9.365234][  T227]  ? __rtnl_newlink (net/core/rtnetlink.c:4063)
[    9.365239][  T227]  rtnl_newlink (net/core/rtnetlink.c:4215)
[    9.365244][  T227]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[    9.365246][  T227]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[    9.365251][  T227]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[    9.365252][  T227]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[    9.365255][  T227]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[    9.365256][  T227]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[    9.365260][  T227]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[    9.365262][  T227]  rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[    9.365265][  T227]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[    9.365266][  T227]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[    9.365271][  T227]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[    9.365273][  T227]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[    9.365276][  T227]  netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[    9.365279][  T227]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[    9.365282][  T227]  ? netlink_ack (./include/linux/skbuff.h:2718)
[    9.365288][  T227]  ? 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))
[    9.365290][  T227]  ? 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))
[    9.365295][  T227]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[    9.365299][  T227]  ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[    9.365301][  T227]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[    9.365306][  T227]  netlink_sendmsg (net/netlink/af_netlink.c:1900)
[    9.365309][  T227]  ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7))
[    9.365313][  T227]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[    9.365315][  T227]  ? __import_iovec (lib/iov_iter.c:1358 lib/iov_iter.c:1373)
[    9.365320][  T227]  __sock_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4))
[    9.365323][  T227]  ____sys_sendmsg (net/socket.c:2713)
[    9.365325][  T227]  ? copy_msghdr_from_user (net/socket.c:2650)
[    9.365327][  T227]  ? sock_write_iter (net/socket.c:1269)
[    9.365329][  T227]  ? move_addr_to_kernel (net/socket.c:258)
[    9.365336][  T227]  ___sys_sendmsg (net/socket.c:2767)
[    9.365339][  T227]  ? copy_msghdr_from_user (net/socket.c:2619)
[    9.365355][  T227]  __sys_sendmsg (net/socket.c:2799)
[    9.365358][  T227]  ? __sys_sendmsg_sock (net/socket.c:2780)
[    9.365364][  T227]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[    9.365367][  T227]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[    9.365370][  T227]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[    9.365373][  T227]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[    9.365375][  T227] RIP: 0033:0x7f5bdeb0954e
[    9.365379][  T227] 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
[    9.365380][  T227] RSP: 002b:00007ffed3f0f410 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
[    9.365383][  T227] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007f5bdeb0954e
[    9.365384][  T227] RDX: 0000000000000000 RSI: 00007ffed3f0f4c0 RDI: 0000000000000005
[    9.365385][  T227] RBP: 00007ffed3f0f420 R08: 0000000000000000 R09: 0000000000000000
[    9.365386][  T227] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a9144b3
[    9.365387][  T227] R13: 00000000004a1620 R14: 0000000000000000 R15: 00007ffed3f0fb80
| [   10.918493][  T378] softirqs last disabled at (16288): br_device_event (./include/linux/spinlock.h:353 net/bridge/br.c:109)
| [   10.918495][  T378] Preemption disabled at:
| [   10.918495][  T378] 0x0
| [   10.918505][  T378] Tainted: [W]=WARN
[   10.918506][  T378] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   10.918508][  T378] Call Trace:
[   10.918509][  T378]  <TASK>
[   10.918511][  T378]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   10.918521][  T378]  __might_resched.cold (kernel/sched/core.c:9234)
[   10.918526][  T378]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   10.918530][  T378]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   10.918534][  T378]  __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))
[   10.918536][  T378]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   10.918543][  T378]  ? 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)
[   10.918545][  T378]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   10.918555][  T378]  put_chars (drivers/char/virtio_console.c:1176)
[   10.918557][  T378]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   10.918563][  T378]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   10.918571][  T378]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   10.918574][  T378]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   10.918579][  T378]  console_emit_next_record (kernel/printk/printk.c:3183)
[   10.918583][  T378]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   10.918585][  T378]  ? 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))
[   10.918588][  T378]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   10.918591][  T378]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   10.918595][  T378]  console_flush_one_record (kernel/printk/printk.c:3268)
[   10.918599][  T378]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   10.918601][  T378]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   10.918606][  T378]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   10.918609][  T378]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   10.918611][  T378]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   10.918613][  T378]  ? 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)
[   10.918616][  T378]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   10.918618][  T378]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   10.918621][  T378]  vprintk_emit (kernel/printk/printk.c:2479)
[   10.918624][  T378]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   10.918625][  T378]  ? mark_held_locks (kernel/locking/lockdep.c:4341)
[   10.918628][  T378]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   10.918630][  T378]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   10.918634][  T378]  _printk (kernel/printk/printk.c:2504)
[   10.918638][  T378]  ? snapshot_read.cold (user.c:?)
[   10.918645][  T378]  br_set_state (net/bridge/br_stp.c:57 (discriminator 2))
[   10.918650][  T378]  br_stp_disable_port (net/bridge/br_stp_if.c:106)
[   10.918653][  T378]  br_device_event (net/bridge/br.c:111)
[   10.918655][  T378]  ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:211 (discriminator 1) kernel/locking/spinlock.c:221 (discriminator 1))
[   10.918659][  T378]  ? packet_sendmsg_spkt (af_packet.c:?)
[   10.918664][  T378]  notifier_call_chain (kernel/notifier.c:85)
[   10.918670][  T378]  __dev_notify_flags (net/core/dev.c:2313 net/core/dev.c:2327 net/core/dev.c:9855)
[   10.918675][  T378]  ? netif_change_name (net/core/dev.c:1517)
[   10.918678][  T378]  ? netif_set_allmulti (./include/net/netdev_lock.h:33)
[   10.918682][  T378]  ? __kernel_text_address (kernel/extable.c:79)
[   10.918684][  T378]  ? write_profile (profile.c:?)
[   10.918689][  T378]  netif_change_flags (net/core/dev.c:9882)
[   10.918693][  T378]  do_setlink.isra.0 (net/core/rtnetlink.c:3266 (discriminator 1))
[   10.918696][  T378]  ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1))
[   10.918698][  T378]  ? rtnl_link_get_size (net/core/rtnetlink.c:747)
[   10.918699][  T378]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380)
[   10.918701][  T378]  ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2))
[   10.918704][  T378]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   10.918706][  T378]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   10.918708][  T378]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   10.918710][  T378]  ? kasan_save_stack (mm/kasan/common.c:58)
[   10.918713][  T378]  ? kasan_save_stack (mm/kasan/common.c:57)
[   10.918714][  T378]  ? kasan_save_track (mm/kasan/common.c:78)
[   10.918715][  T378]  ? __kasan_kmalloc (mm/kasan/common.c:398 mm/kasan/common.c:415)
[   10.918717][  T378]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   10.918719][  T378]  ? snd_ac97_proc_read_main (sound/pci/ac97/ac97_proc.c:320)
[   10.918722][  T378]  ? ___sys_sendmsg (net/socket.c:2758)
[   10.918726][  T378]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   10.918728][  T378]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   10.918730][  T378]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   10.918732][  T378]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   10.918734][  T378]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   10.918735][  T378]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   10.918736][  T378]  ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22))
[   10.918739][  T378]  ? __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)
[   10.918740][  T378]  ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1))
[   10.918742][  T378]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   10.918745][  T378]  ? ww_mutex_lock (kernel/locking/mutex.c:934)
[   10.918749][  T378]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   10.918751][  T378]  ? __rtnl_newlink (net/core/rtnetlink.c:4063)
[   10.918756][  T378]  rtnl_newlink (net/core/rtnetlink.c:4215)
[   10.918761][  T378]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   10.918763][  T378]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   10.918768][  T378]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   10.918769][  T378]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   10.918772][  T378]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   10.918773][  T378]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   10.918777][  T378]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   10.918779][  T378]  rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   10.918782][  T378]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   10.918784][  T378]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   10.918788][  T378]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   10.918790][  T378]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   10.918793][  T378]  netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   10.918796][  T378]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   10.918799][  T378]  ? netlink_ack (./include/linux/skbuff.h:2718)
[   10.918805][  T378]  ? 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))
[   10.918807][  T378]  ? 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))
[   10.918812][  T378]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   10.918816][  T378]  ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   10.918818][  T378]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   10.918822][  T378]  netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   10.918826][  T378]  ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7))
[   10.918830][  T378]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   10.918832][  T378]  ? __import_iovec (lib/iov_iter.c:1358 lib/iov_iter.c:1373)
[   10.918837][  T378]  __sock_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4))
[   10.918840][  T378]  ____sys_sendmsg (net/socket.c:2713)
[   10.918842][  T378]  ? copy_msghdr_from_user (net/socket.c:2650)
[   10.918844][  T378]  ? sock_write_iter (net/socket.c:1269)
[   10.918846][  T378]  ? move_addr_to_kernel (net/socket.c:258)
[   10.918853][  T378]  ___sys_sendmsg (net/socket.c:2767)
[   10.918856][  T378]  ? copy_msghdr_from_user (net/socket.c:2619)
[   10.918871][  T378]  __sys_sendmsg (net/socket.c:2799)
[   10.918874][  T378]  ? __sys_sendmsg_sock (net/socket.c:2780)
[   10.918880][  T378]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   10.918883][  T378]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   10.918886][  T378]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   10.918889][  T378]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   10.918891][  T378] RIP: 0033:0x7f34240e754e
[   10.918893][  T378] 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
[   10.918895][  T378] RSP: 002b:00007ffd59077580 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
[   10.918897][  T378] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f34240e754e
[   10.918899][  T378] RDX: 0000000000000000 RSI: 00007ffd59077630 RDI: 0000000000000005
[   10.918900][  T378] RBP: 00007ffd59077590 R08: 0000000000000000 R09: 0000000000000000
[   10.918900][  T378] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a9144b5
[   10.918901][  T378] R13: 00000000004a1620 R14: 0000000000000000 R15: 00007ffd59077cf0
| [   12.127209][  T516] softirqs last disabled at (13658): br_device_event (./include/linux/spinlock.h:353 net/bridge/br.c:119)
| [   12.127211][  T516] Preemption disabled at:
| [   12.127212][  T516] 0x0
| [   12.127222][  T516] Tainted: [W]=WARN
[   12.127223][  T516] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   12.127224][  T516] Call Trace:
[   12.127226][  T516]  <TASK>
[   12.127227][  T516]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   12.127234][  T516]  __might_resched.cold (kernel/sched/core.c:9234)
[   12.127238][  T516]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   12.127243][  T516]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   12.127247][  T516]  __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))
[   12.127249][  T516]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   12.127255][  T516]  ? 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)
[   12.127258][  T516]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   12.127262][  T516]  put_chars (drivers/char/virtio_console.c:1176)
[   12.127264][  T516]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   12.127265][  T516]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   12.127269][  T516]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   12.127274][  T516]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   12.127282][  T516]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   12.127284][  T516]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   12.127286][  T516]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   12.127290][  T516]  console_emit_next_record (kernel/printk/printk.c:3183)
[   12.127294][  T516]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   12.127296][  T516]  ? 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))
[   12.127299][  T516]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   12.127301][  T516]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   12.127305][  T516]  console_flush_one_record (kernel/printk/printk.c:3268)
[   12.127309][  T516]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   12.127311][  T516]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   12.127316][  T516]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   12.127318][  T516]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   12.127320][  T516]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   12.127322][  T516]  ? 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)
[   12.127326][  T516]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   12.127327][  T516]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   12.127330][  T516]  vprintk_emit (kernel/printk/printk.c:2479)
[   12.127333][  T516]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   12.127335][  T516]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   12.127337][  T516]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   12.127341][  T516]  _printk (kernel/printk/printk.c:2504)
[   12.127345][  T516]  ? snapshot_read.cold (user.c:?)
[   12.127350][  T516]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   12.127354][  T516]  br_set_state (net/bridge/br_stp.c:57 (discriminator 2))
[   12.127358][  T516]  br_init_port (net/bridge/br_stp_if.c:39)
[   12.127361][  T516]  br_stp_enable_port (net/bridge/br_stp_if.c:93)
[   12.127363][  T516]  br_device_event (net/bridge/br.c:120)
[   12.127366][  T516]  ? packet_sendmsg_spkt (af_packet.c:?)
[   12.127367][  T516]  ? nlmsg_notify (./include/net/netlink.h:1165 ./include/net/netlink.h:1184 net/netlink/af_netlink.c:2599)
[   12.127374][  T516]  notifier_call_chain (kernel/notifier.c:85)
[   12.127379][  T516]  __dev_notify_flags (net/core/dev.c:2313 net/core/dev.c:2327 net/core/dev.c:9853)
[   12.127384][  T516]  ? netif_change_name (net/core/dev.c:1517)
[   12.127388][  T516]  ? netif_set_allmulti (./include/net/netdev_lock.h:33)
[   12.127390][  T516]  ? kernel_text_address (kernel/extable.c:125 kernel/extable.c:94)
[   12.127393][  T516]  ? __kernel_text_address (kernel/extable.c:79)
[   12.127395][  T516]  ? write_profile (profile.c:?)
[   12.127399][  T516]  netif_change_flags (net/core/dev.c:9882)
[   12.127403][  T516]  do_setlink.isra.0 (net/core/rtnetlink.c:3266 (discriminator 1))
[   12.127407][  T516]  ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1))
[   12.127409][  T516]  ? rtnl_link_get_size (net/core/rtnetlink.c:747)
[   12.127410][  T516]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380)
[   12.127412][  T516]  ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2))
[   12.127416][  T516]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   12.127418][  T516]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   12.127419][  T516]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   12.127422][  T516]  ? kasan_save_stack (mm/kasan/common.c:58)
[   12.127424][  T516]  ? kasan_save_stack (mm/kasan/common.c:57)
[   12.127425][  T516]  ? kasan_save_track (mm/kasan/common.c:78)
[   12.127426][  T516]  ? __kasan_kmalloc (mm/kasan/common.c:398 mm/kasan/common.c:415)
[   12.127428][  T516]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   12.127430][  T516]  ? snd_ac97_proc_read_main (sound/pci/ac97/ac97_proc.c:320)
[   12.127433][  T516]  ? ___sys_sendmsg (net/socket.c:2758)
[   12.127437][  T516]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   12.127439][  T516]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   12.127441][  T516]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   12.127443][  T516]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   12.127445][  T516]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   12.127446][  T516]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   12.127447][  T516]  ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22))
[   12.127450][  T516]  ? __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)
[   12.127452][  T516]  ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1))
[   12.127454][  T516]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   12.127458][  T516]  ? ww_mutex_lock (kernel/locking/mutex.c:934)
[   12.127461][  T516]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   12.127463][  T516]  ? __rtnl_newlink (net/core/rtnetlink.c:4063)
[   12.127468][  T516]  rtnl_newlink (net/core/rtnetlink.c:4215)
[   12.127474][  T516]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   12.127475][  T516]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   12.127480][  T516]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   12.127482][  T516]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   12.127484][  T516]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   12.127486][  T516]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   12.127489][  T516]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   12.127491][  T516]  rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   12.127494][  T516]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   12.127496][  T516]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   12.127500][  T516]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   12.127502][  T516]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   12.127505][  T516]  netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   12.127507][  T516]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   12.127510][  T516]  ? netlink_ack (./include/linux/skbuff.h:2718)
[   12.127516][  T516]  ? 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))
[   12.127521][  T516]  ? 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))
[   12.127525][  T516]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   12.127529][  T516]  ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   12.127531][  T516]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   12.127536][  T516]  netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   12.127540][  T516]  ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7))
[   12.127543][  T516]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   12.127545][  T516]  ? __import_iovec (lib/iov_iter.c:1358 lib/iov_iter.c:1373)
[   12.127550][  T516]  __sock_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4))
[   12.127556][  T516]  ____sys_sendmsg (net/socket.c:2713)
[   12.127559][  T516]  ? copy_msghdr_from_user (net/socket.c:2650)
[   12.127561][  T516]  ? sock_write_iter (net/socket.c:1269)
[   12.127563][  T516]  ? move_addr_to_kernel (net/socket.c:258)
[   12.127570][  T516]  ___sys_sendmsg (net/socket.c:2767)
[   12.127573][  T516]  ? copy_msghdr_from_user (net/socket.c:2619)
[   12.127588][  T516]  __sys_sendmsg (net/socket.c:2799)
[   12.127591][  T516]  ? __sys_sendmsg_sock (net/socket.c:2780)
[   12.127597][  T516]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   12.127600][  T516]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   12.127603][  T516]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   12.127606][  T516]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   12.127608][  T516] RIP: 0033:0x7f08adacd54e
[   12.127610][  T516] 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
[   12.127612][  T516] RSP: 002b:00007ffed67766b0 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
[   12.127614][  T516] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f08adacd54e
[   12.127616][  T516] RDX: 0000000000000000 RSI: 00007ffed6776760 RDI: 0000000000000005
[   12.127617][  T516] RBP: 00007ffed67766c0 R08: 0000000000000000 R09: 0000000000000000
[   12.127617][  T516] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a9144b6
[   12.127618][  T516] R13: 00000000004a1620 R14: 0000000000000000 R15: 00007ffed6776e20
| [   13.428986][  T638] softirqs last disabled at (13714): br_device_event (./include/linux/spinlock.h:353 net/bridge/br.c:109)
| [   13.428988][  T638] Preemption disabled at:
| [   13.428989][  T638] 0x0
| [   13.428999][  T638] Tainted: [W]=WARN
[   13.429000][  T638] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   13.429001][  T638] Call Trace:
[   13.429003][  T638]  <TASK>
[   13.429004][  T638]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   13.429011][  T638]  __might_resched.cold (kernel/sched/core.c:9234)
[   13.429015][  T638]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   13.429019][  T638]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   13.429024][  T638]  __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))
[   13.429026][  T638]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   13.429032][  T638]  ? 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)
[   13.429035][  T638]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   13.429038][  T638]  put_chars (drivers/char/virtio_console.c:1176)
[   13.429041][  T638]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   13.429047][  T638]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   13.429055][  T638]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   13.429058][  T638]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   13.429063][  T638]  console_emit_next_record (kernel/printk/printk.c:3183)
[   13.429067][  T638]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   13.429068][  T638]  ? 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))
[   13.429072][  T638]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   13.429074][  T638]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   13.429078][  T638]  console_flush_one_record (kernel/printk/printk.c:3268)
[   13.429082][  T638]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   13.429084][  T638]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   13.429089][  T638]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   13.429092][  T638]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   13.429094][  T638]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   13.429096][  T638]  ? 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)
[   13.429100][  T638]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   13.429101][  T638]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   13.429104][  T638]  vprintk_emit (kernel/printk/printk.c:2479)
[   13.429107][  T638]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   13.429109][  T638]  ? mark_held_locks (kernel/locking/lockdep.c:4341)
[   13.429111][  T638]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   13.429113][  T638]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   13.429118][  T638]  _printk (kernel/printk/printk.c:2504)
[   13.429121][  T638]  ? snapshot_read.cold (user.c:?)
[   13.429129][  T638]  br_set_state (net/bridge/br_stp.c:57 (discriminator 2))
[   13.429134][  T638]  br_stp_disable_port (net/bridge/br_stp_if.c:106)
[   13.429137][  T638]  br_device_event (net/bridge/br.c:111)
[   13.429139][  T638]  ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:211 (discriminator 1) kernel/locking/spinlock.c:221 (discriminator 1))
[   13.429143][  T638]  ? packet_sendmsg_spkt (af_packet.c:?)
[   13.429148][  T638]  notifier_call_chain (kernel/notifier.c:85)
[   13.429154][  T638]  __dev_notify_flags (net/core/dev.c:2313 net/core/dev.c:2327 net/core/dev.c:9855)
[   13.429160][  T638]  ? netif_change_name (net/core/dev.c:1517)
[   13.429163][  T638]  ? netif_set_allmulti (./include/net/netdev_lock.h:33)
[   13.429167][  T638]  ? __kernel_text_address (kernel/extable.c:79)
[   13.429169][  T638]  ? write_profile (profile.c:?)
[   13.429174][  T638]  netif_change_flags (net/core/dev.c:9882)
[   13.429178][  T638]  do_setlink.isra.0 (net/core/rtnetlink.c:3266 (discriminator 1))
[   13.429181][  T638]  ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1))
[   13.429184][  T638]  ? rtnl_link_get_size (net/core/rtnetlink.c:747)
[   13.429185][  T638]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380)
[   13.429187][  T638]  ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2))
[   13.429190][  T638]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   13.429192][  T638]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   13.429194][  T638]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   13.429196][  T638]  ? kasan_save_stack (mm/kasan/common.c:58)
[   13.429199][  T638]  ? kasan_save_stack (mm/kasan/common.c:57)
[   13.429200][  T638]  ? kasan_save_track (mm/kasan/common.c:78)
[   13.429201][  T638]  ? __kasan_kmalloc (mm/kasan/common.c:398 mm/kasan/common.c:415)
[   13.429203][  T638]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   13.429205][  T638]  ? snd_ac97_proc_read_main (sound/pci/ac97/ac97_proc.c:320)
[   13.429208][  T638]  ? ___sys_sendmsg (net/socket.c:2758)
[   13.429212][  T638]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   13.429214][  T638]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   13.429217][  T638]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   13.429218][  T638]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   13.429220][  T638]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   13.429221][  T638]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   13.429222][  T638]  ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22))
[   13.429225][  T638]  ? __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)
[   13.429226][  T638]  ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1))
[   13.429228][  T638]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   13.429231][  T638]  ? ww_mutex_lock (kernel/locking/mutex.c:934)
[   13.429235][  T638]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   13.429237][  T638]  ? __rtnl_newlink (net/core/rtnetlink.c:4063)
[   13.429242][  T638]  rtnl_newlink (net/core/rtnetlink.c:4215)
[   13.429248][  T638]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   13.429250][  T638]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   13.429254][  T638]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   13.429256][  T638]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   13.429258][  T638]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   13.429260][  T638]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   13.429264][  T638]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   13.429266][  T638]  rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   13.429269][  T638]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   13.429271][  T638]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   13.429275][  T638]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   13.429277][  T638]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   13.429281][  T638]  netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   13.429284][  T638]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   13.429287][  T638]  ? netlink_ack (./include/linux/skbuff.h:2718)
[   13.429293][  T638]  ? 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))
[   13.429295][  T638]  ? 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))
[   13.429300][  T638]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   13.429304][  T638]  ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   13.429306][  T638]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   13.429311][  T638]  netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   13.429315][  T638]  ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7))
[   13.429319][  T638]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   13.429320][  T638]  ? __import_iovec (lib/iov_iter.c:1358 lib/iov_iter.c:1373)
[   13.429325][  T638]  __sock_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4))
[   13.429328][  T638]  ____sys_sendmsg (net/socket.c:2713)
[   13.429330][  T638]  ? copy_msghdr_from_user (net/socket.c:2650)
[   13.429333][  T638]  ? sock_write_iter (net/socket.c:1269)
[   13.429334][  T638]  ? move_addr_to_kernel (net/socket.c:258)
[   13.429342][  T638]  ___sys_sendmsg (net/socket.c:2767)
[   13.429344][  T638]  ? copy_msghdr_from_user (net/socket.c:2619)
[   13.429361][  T638]  __sys_sendmsg (net/socket.c:2799)
[   13.429364][  T638]  ? __sys_sendmsg_sock (net/socket.c:2780)
[   13.429370][  T638]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   13.429373][  T638]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   13.429376][  T638]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   13.429379][  T638]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   13.429381][  T638] RIP: 0033:0x7f97c36ba54e
[   13.429384][  T638] 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
[   13.429385][  T638] RSP: 002b:00007ffc9b8ff190 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
[   13.429388][  T638] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f97c36ba54e
[   13.429389][  T638] RDX: 0000000000000000 RSI: 00007ffc9b8ff240 RDI: 0000000000000005
[   13.429390][  T638] RBP: 00007ffc9b8ff1a0 R08: 0000000000000000 R09: 0000000000000000
[   13.429391][  T638] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a9144b7
[   13.429392][  T638] R13: 00000000004a1620 R14: 0000000000000000 R15: 00007ffc9b8ff900
| [   14.583785][  T776] softirqs last disabled at (19484): br_device_event (./include/linux/spinlock.h:353 net/bridge/br.c:119)
| [   14.583787][  T776] Preemption disabled at:
| [   14.583788][  T776] 0x0
| [   14.583797][  T776] Tainted: [W]=WARN
[   14.583798][  T776] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   14.583800][  T776] Call Trace:
[   14.583802][  T776]  <TASK>
[   14.583803][  T776]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   14.583809][  T776]  __might_resched.cold (kernel/sched/core.c:9234)
[   14.583814][  T776]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   14.583818][  T776]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   14.583823][  T776]  __kmalloc_noprof (./include/linux/sched/mm.h:322 (discriminator 2) mm/slub.c:4636 (discriminator 2) mm/slub.c:4974 (discriminator 2) mm/slub.c:5413 (discriminator 2) mm/slub.c:5439 (discriminator 2))
[   14.583825][  T776]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   14.583831][  T776]  ? do_raw_spin_unlock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:32 ./include/asm-generic/qspinlock.h:58 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141)
[   14.583834][  T776]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   14.583837][  T776]  put_chars (drivers/char/virtio_console.c:1176)
[   14.583840][  T776]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   14.583841][  T776]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   14.583844][  T776]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   14.583850][  T776]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   14.583857][  T776]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   14.583860][  T776]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   14.583862][  T776]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   14.583866][  T776]  console_emit_next_record (kernel/printk/printk.c:3183)
[   14.583870][  T776]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   14.583872][  T776]  ? console_flush_one_record (./include/linux/rcupdate.h:314 (discriminator 2) ./include/linux/srcu.h:439 (discriminator 2) kernel/printk/printk.c:291 (discriminator 2) kernel/printk/printk.c:3246 (discriminator 2))
[   14.583875][  T776]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   14.583877][  T776]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   14.583880][  T776]  console_flush_one_record (kernel/printk/printk.c:3268)
[   14.583885][  T776]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   14.583886][  T776]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   14.583892][  T776]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   14.583894][  T776]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   14.583896][  T776]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   14.583898][  T776]  ? lock_acquire (./include/linux/srcutree.h:374 ./include/linux/srcu.h:541 ./include/linux/srcu.h:645 ./include/trace/events/lock.h:23 ./include/trace/events/lock.h:23 kernel/locking/lockdep.c:5871)
[   14.583901][  T776]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   14.583903][  T776]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   14.583906][  T776]  vprintk_emit (kernel/printk/printk.c:2479)
[   14.583909][  T776]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   14.583911][  T776]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   14.583913][  T776]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   14.583917][  T776]  _printk (kernel/printk/printk.c:2504)
[   14.583921][  T776]  ? snapshot_read.cold (user.c:?)
[   14.583926][  T776]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   14.583930][  T776]  br_set_state (net/bridge/br_stp.c:57 (discriminator 2))
[   14.583934][  T776]  br_init_port (net/bridge/br_stp_if.c:39)
[   14.583937][  T776]  br_stp_enable_port (net/bridge/br_stp_if.c:93)
[   14.583939][  T776]  br_device_event (net/bridge/br.c:120)
[   14.583942][  T776]  ? packet_sendmsg_spkt (af_packet.c:?)
[   14.583943][  T776]  ? nlmsg_notify (./include/net/netlink.h:1165 ./include/net/netlink.h:1184 net/netlink/af_netlink.c:2599)
[   14.583950][  T776]  notifier_call_chain (kernel/notifier.c:85)
[   14.583955][  T776]  __dev_notify_flags (net/core/dev.c:2313 net/core/dev.c:2327 net/core/dev.c:9853)
[   14.583960][  T776]  ? netif_change_name (net/core/dev.c:1517)
[   14.583964][  T776]  ? netif_set_allmulti (./include/net/netdev_lock.h:33)
[   14.583966][  T776]  ? kernel_text_address (kernel/extable.c:125 kernel/extable.c:94)
[   14.583969][  T776]  ? __kernel_text_address (kernel/extable.c:79)
[   14.583971][  T776]  ? write_profile (profile.c:?)
[   14.583976][  T776]  netif_change_flags (net/core/dev.c:9882)
[   14.583979][  T776]  do_setlink.isra.0 (net/core/rtnetlink.c:3266 (discriminator 1))
[   14.583983][  T776]  ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1))
[   14.583985][  T776]  ? rtnl_link_get_size (net/core/rtnetlink.c:747)
[   14.583986][  T776]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380)
[   14.583988][  T776]  ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2))
[   14.583991][  T776]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   14.583993][  T776]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   14.583995][  T776]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   14.583997][  T776]  ? kasan_save_stack (mm/kasan/common.c:58)
[   14.584000][  T776]  ? kasan_save_stack (mm/kasan/common.c:57)
[   14.584001][  T776]  ? kasan_save_track (mm/kasan/common.c:78)
[   14.584002][  T776]  ? __kasan_kmalloc (mm/kasan/common.c:398 mm/kasan/common.c:415)
[   14.584004][  T776]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   14.584006][  T776]  ? snd_ac97_proc_read_main (sound/pci/ac97/ac97_proc.c:320)
[   14.584009][  T776]  ? ___sys_sendmsg (net/socket.c:2758)
[   14.584013][  T776]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   14.584015][  T776]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   14.584017][  T776]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   14.584019][  T776]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   14.584021][  T776]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   14.584022][  T776]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   14.584023][  T776]  ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22))
[   14.584026][  T776]  ? __mutex_lock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:3188 kernel/locking/mutex.c:89 kernel/locking/mutex.c:134 kernel/locking/mutex.c:649 kernel/locking/mutex.c:821)
[   14.584028][  T776]  ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1))
[   14.584030][  T776]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   14.584033][  T776]  ? ww_mutex_lock (kernel/locking/mutex.c:934)
[   14.584037][  T776]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   14.584039][  T776]  ? __rtnl_newlink (net/core/rtnetlink.c:4063)
[   14.584044][  T776]  rtnl_newlink (net/core/rtnetlink.c:4215)
[   14.584050][  T776]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   14.584051][  T776]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   14.584056][  T776]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   14.584058][  T776]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   14.584060][  T776]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   14.584062][  T776]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   14.584065][  T776]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   14.584067][  T776]  rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   14.584070][  T776]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   14.584072][  T776]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   14.584076][  T776]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   14.584078][  T776]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   14.584081][  T776]  netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   14.584083][  T776]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   14.584086][  T776]  ? netlink_ack (./include/linux/skbuff.h:2718)
[   14.584092][  T776]  ? netlink_deliver_tap (./include/linux/rcupdate.h:319 (discriminator 2) ./include/linux/rcupdate.h:880 (discriminator 2) ./include/net/netns/generic.h:48 (discriminator 2) net/netlink/af_netlink.c:334 (discriminator 2))
[   14.584095][  T776]  ? netlink_deliver_tap (./include/linux/rcupdate.h:319 (discriminator 2) ./include/linux/rcupdate.h:880 (discriminator 2) net/netlink/af_netlink.c:341 (discriminator 2))
[   14.584099][  T776]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   14.584103][  T776]  ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   14.584105][  T776]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   14.584109][  T776]  netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   14.584113][  T776]  ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7))
[   14.584117][  T776]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   14.584119][  T776]  ? __import_iovec (lib/iov_iter.c:1358 lib/iov_iter.c:1373)
[   14.584124][  T776]  __sock_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4))
[   14.584127][  T776]  ____sys_sendmsg (net/socket.c:2713)
[   14.584129][  T776]  ? copy_msghdr_from_user (net/socket.c:2650)
[   14.584131][  T776]  ? sock_write_iter (net/socket.c:1269)
[   14.584133][  T776]  ? move_addr_to_kernel (net/socket.c:258)
[   14.584140][  T776]  ___sys_sendmsg (net/socket.c:2767)
[   14.584143][  T776]  ? copy_msghdr_from_user (net/socket.c:2619)
[   14.584158][  T776]  __sys_sendmsg (net/socket.c:2799)
[   14.584161][  T776]  ? __sys_sendmsg_sock (net/socket.c:2780)
[   14.584167][  T776]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   14.584170][  T776]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   14.584173][  T776]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   14.584176][  T776]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   14.584178][  T776] RIP: 0033:0x7ff2722c754e
[   14.584180][  T776] Code: 4d 89 d8 e8 b4 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 03 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 b4 bd 00 00       	call   0xbdbc
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 03 ff ff ff       	call   0xffffffffffffff3c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 03 ff ff ff       	call   0xffffffffffffff12
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[   14.584182][  T776] RSP: 002b:00007fff1e5dd6d0 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
[   14.584184][  T776] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007ff2722c754e
[   14.584186][  T776] RDX: 0000000000000000 RSI: 00007fff1e5dd780 RDI: 0000000000000005
[   14.584187][  T776] RBP: 00007fff1e5dd6e0 R08: 0000000000000000 R09: 0000000000000000
[   14.584187][  T776] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a9144b8
[   14.584188][  T776] R13: 00000000004a1620 R14: 0000000000000000 R15: 00007fff1e5dde40
| [   16.280860][  T932] softirqs last disabled at (17300): br_device_event (./include/linux/spinlock.h:353 net/bridge/br.c:109)
| [   16.280862][  T932] Preemption disabled at:
| [   16.280863][  T932] 0x0
| [   16.280873][  T932] Tainted: [W]=WARN
[   16.280873][  T932] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   16.280875][  T932] Call Trace:
[   16.280877][  T932]  <TASK>
[   16.280879][  T932]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   16.280885][  T932]  __might_resched.cold (kernel/sched/core.c:9234)
[   16.280889][  T932]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   16.280893][  T932]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   16.280897][  T932]  __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))
[   16.280899][  T932]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   16.280905][  T932]  ? 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)
[   16.280908][  T932]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   16.280912][  T932]  put_chars (drivers/char/virtio_console.c:1176)
[   16.280914][  T932]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   16.280920][  T932]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   16.280928][  T932]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   16.280931][  T932]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   16.280935][  T932]  console_emit_next_record (kernel/printk/printk.c:3183)
[   16.280939][  T932]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   16.280941][  T932]  ? 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))
[   16.280944][  T932]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   16.280947][  T932]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   16.280950][  T932]  console_flush_one_record (kernel/printk/printk.c:3268)
[   16.280955][  T932]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   16.280956][  T932]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   16.280962][  T932]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   16.280964][  T932]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   16.280966][  T932]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   16.280968][  T932]  ? 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)
[   16.280972][  T932]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   16.280973][  T932]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   16.280976][  T932]  vprintk_emit (kernel/printk/printk.c:2479)
[   16.280979][  T932]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   16.280980][  T932]  ? mark_held_locks (kernel/locking/lockdep.c:4341)
[   16.280983][  T932]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   16.280985][  T932]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   16.280989][  T932]  _printk (kernel/printk/printk.c:2504)
[   16.280993][  T932]  ? snapshot_read.cold (user.c:?)
[   16.281000][  T932]  br_set_state (net/bridge/br_stp.c:57 (discriminator 2))
[   16.281004][  T932]  br_stp_disable_port (net/bridge/br_stp_if.c:106)
[   16.281007][  T932]  br_device_event (net/bridge/br.c:111)
[   16.281010][  T932]  ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:211 (discriminator 1) kernel/locking/spinlock.c:221 (discriminator 1))
[   16.281016][  T932]  ? packet_sendmsg_spkt (af_packet.c:?)
[   16.281021][  T932]  notifier_call_chain (kernel/notifier.c:85)
[   16.281027][  T932]  __dev_notify_flags (net/core/dev.c:2313 net/core/dev.c:2327 net/core/dev.c:9855)
[   16.281032][  T932]  ? netif_change_name (net/core/dev.c:1517)
[   16.281036][  T932]  ? netif_set_allmulti (./include/net/netdev_lock.h:33)
[   16.281039][  T932]  ? __kernel_text_address (kernel/extable.c:79)
[   16.281041][  T932]  ? write_profile (profile.c:?)
[   16.281046][  T932]  netif_change_flags (net/core/dev.c:9882)
[   16.281050][  T932]  do_setlink.isra.0 (net/core/rtnetlink.c:3266 (discriminator 1))
[   16.281053][  T932]  ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1))
[   16.281055][  T932]  ? rtnl_link_get_size (net/core/rtnetlink.c:747)
[   16.281056][  T932]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380)
[   16.281058][  T932]  ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2))
[   16.281061][  T932]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   16.281063][  T932]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   16.281065][  T932]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   16.281067][  T932]  ? kasan_save_stack (mm/kasan/common.c:58)
[   16.281070][  T932]  ? kasan_save_stack (mm/kasan/common.c:57)
[   16.281071][  T932]  ? kasan_save_track (mm/kasan/common.c:78)
[   16.281072][  T932]  ? __kasan_kmalloc (mm/kasan/common.c:398 mm/kasan/common.c:415)
[   16.281074][  T932]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   16.281076][  T932]  ? snd_ac97_proc_read_main (sound/pci/ac97/ac97_proc.c:320)
[   16.281079][  T932]  ? ___sys_sendmsg (net/socket.c:2758)
[   16.281083][  T932]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   16.281085][  T932]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   16.281087][  T932]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   16.281089][  T932]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   16.281090][  T932]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   16.281091][  T932]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   16.281093][  T932]  ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22))
[   16.281095][  T932]  ? __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)
[   16.281096][  T932]  ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1))
[   16.281098][  T932]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   16.281101][  T932]  ? ww_mutex_lock (kernel/locking/mutex.c:934)
[   16.281105][  T932]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   16.281107][  T932]  ? __rtnl_newlink (net/core/rtnetlink.c:4063)
[   16.281112][  T932]  rtnl_newlink (net/core/rtnetlink.c:4215)
[   16.281118][  T932]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   16.281119][  T932]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   16.281124][  T932]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   16.281126][  T932]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   16.281128][  T932]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   16.281130][  T932]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   16.281134][  T932]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   16.281136][  T932]  rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   16.281139][  T932]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   16.281140][  T932]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   16.281144][  T932]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   16.281146][  T932]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   16.281150][  T932]  netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   16.281153][  T932]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   16.281156][  T932]  ? netlink_ack (./include/linux/skbuff.h:2718)
[   16.281162][  T932]  ? 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))
[   16.281164][  T932]  ? 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))
[   16.281168][  T932]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   16.281172][  T932]  ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   16.281175][  T932]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   16.281179][  T932]  netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   16.281183][  T932]  ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7))
[   16.281187][  T932]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   16.281188][  T932]  ? __import_iovec (lib/iov_iter.c:1358 lib/iov_iter.c:1373)
[   16.281193][  T932]  __sock_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4))
[   16.281196][  T932]  ____sys_sendmsg (net/socket.c:2713)
[   16.281198][  T932]  ? copy_msghdr_from_user (net/socket.c:2650)
[   16.281200][  T932]  ? sock_write_iter (net/socket.c:1269)
[   16.281202][  T932]  ? move_addr_to_kernel (net/socket.c:258)
[   16.281209][  T932]  ___sys_sendmsg (net/socket.c:2767)
[   16.281212][  T932]  ? copy_msghdr_from_user (net/socket.c:2619)
[   16.281227][  T932]  __sys_sendmsg (net/socket.c:2799)
[   16.281230][  T932]  ? __sys_sendmsg_sock (net/socket.c:2780)
[   16.281236][  T932]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   16.281239][  T932]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   16.281241][  T932]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   16.281244][  T932]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   16.281246][  T932] RIP: 0033:0x7fa3b811454e
[   16.281249][  T932] 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
[   16.281250][  T932] RSP: 002b:00007fffb1d756e0 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
[   16.281253][  T932] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007fa3b811454e
[   16.281254][  T932] RDX: 0000000000000000 RSI: 00007fffb1d75790 RDI: 0000000000000005
[   16.281255][  T932] RBP: 00007fffb1d756f0 R08: 0000000000000000 R09: 0000000000000000
[   16.281256][  T932] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a9144ba
[   16.281257][  T932] R13: 00000000004a1620 R14: 0000000000000000 R15: 00007fffb1d75e50
| [   17.463081][   T69] softirqs last disabled at (126150): br_port_carrier_check (./include/linux/spinlock.h:353 net/bridge/br_if.c:87)
| [   17.463084][   T69] Preemption disabled at:
| [   17.463084][   T69] 0x0
| [   17.463094][   T69] Tainted: [W]=WARN
[   17.463095][   T69] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   17.463096][   T69] Workqueue: events_unbound linkwatch_event
[   17.463099][   T69] Call Trace:
[   17.463101][   T69]  <TASK>
[   17.463103][   T69]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   17.463109][   T69]  __might_resched.cold (kernel/sched/core.c:9234)
[   17.463114][   T69]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   17.463118][   T69]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   17.463122][   T69]  __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))
[   17.463124][   T69]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   17.463130][   T69]  ? 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)
[   17.463133][   T69]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   17.463137][   T69]  put_chars (drivers/char/virtio_console.c:1176)
[   17.463139][   T69]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   17.463142][   T69]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   17.463145][   T69]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   17.463147][   T69]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   17.463152][   T69]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   17.463155][   T69]  ? mark_usage (kernel/locking/lockdep.c:4690)
[   17.463157][   T69]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   17.463159][   T69]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   17.463163][   T69]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   17.463165][   T69]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   17.463169][   T69]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   17.463173][   T69]  console_emit_next_record (kernel/printk/printk.c:3183)
[   17.463177][   T69]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   17.463179][   T69]  ? 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))
[   17.463182][   T69]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   17.463184][   T69]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   17.463188][   T69]  console_flush_one_record (kernel/printk/printk.c:3268)
[   17.463193][   T69]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   17.463195][   T69]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   17.463200][   T69]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   17.463203][   T69]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   17.463205][   T69]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   17.463207][   T69]  ? 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)
[   17.463211][   T69]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   17.463212][   T69]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   17.463215][   T69]  vprintk_emit (kernel/printk/printk.c:2479)
[   17.463218][   T69]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   17.463220][   T69]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   17.463222][   T69]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   17.463226][   T69]  _printk (kernel/printk/printk.c:2504)
[   17.463229][   T69]  ? snapshot_read.cold (user.c:?)
[   17.463234][   T69]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   17.463238][   T69]  br_set_state (net/bridge/br_stp.c:57 (discriminator 2))
[   17.463242][   T69]  br_init_port (net/bridge/br_stp_if.c:39)
[   17.463245][   T69]  br_stp_enable_port (net/bridge/br_stp_if.c:93)
[   17.463247][   T69]  br_port_carrier_check (net/bridge/br_if.c:90)
[   17.463250][   T69]  br_device_event (net/bridge/br.c:101)
[   17.463253][   T69]  ? packet_sendmsg_spkt (af_packet.c:?)
[   17.463255][   T69]  ? nlmsg_notify (./include/net/netlink.h:1165 ./include/net/netlink.h:1184 net/netlink/af_netlink.c:2599)
[   17.463262][   T69]  notifier_call_chain (kernel/notifier.c:85)
[   17.463267][   T69]  netif_state_change (net/core/dev.c:1625)
[   17.463272][   T69]  ? call_netdevice_notifiers_info (./include/net/net_namespace.h:422 (discriminator 7))
[   17.463277][   T69]  ? linkwatch_do_dev (net/core/link_watch.c:182 net/core/link_watch.c:166)
[   17.463279][   T69]  __linkwatch_run_queue (net/core/link_watch.c:240)
[   17.463282][   T69]  ? linkwatch_do_dev (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   17.463284][   T69]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   17.463289][   T69]  linkwatch_event (net/core/link_watch.c:314 (discriminator 11))
[   17.463291][   T69]  ? __linkwatch_run_queue (net/core/link_watch.c:213)
[   17.463294][   T69]  process_one_work (kernel/workqueue.c:3387)
[   17.463301][   T69]  ? __queue_delayed_work (kernel/workqueue.c:2622)
[   17.463304][   T69]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   17.463311][   T69]  worker_thread (kernel/workqueue.c:3470 kernel/workqueue.c:3551)
[   17.463315][   T69]  ? rescuer_thread (./include/linux/list.h:419 (discriminator 3))
[   17.463317][   T69]  ? __kthread_parkme (./include/linux/instrumented.h:82 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 kernel/kthread.c:272)
[   17.463320][   T69]  ? rescuer_thread (./include/linux/list.h:419 (discriminator 3))
[   17.463323][   T69]  ? rescuer_thread (./include/linux/list.h:419 (discriminator 3))
[   17.463325][   T69]  kthread (kernel/kthread.c:436)
[   17.463327][   T69]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[   17.463330][   T69]  ? kthread_affine_preferred (kernel/kthread.c:857)
[   17.463333][   T69]  ret_from_fork (arch/x86/kernel/process.c:158)
[   17.463337][   T69]  ? arch_exit_to_user_mode_prepare.isra.0 (arch/x86/entry/vdso/vma.c:80 (discriminator 1))
[   17.463341][   T69]  ? __switch_to (arch/x86/kernel/process_64.c:403 arch/x86/kernel/process_64.c:663)
[   17.463344][   T69]  ? kthread_affine_preferred (kernel/kthread.c:857)
[   17.463347][   T69]  ret_from_fork_asm (arch/x86/entry/entry_64.S:245)
| [   18.854821][ T1196] softirqs last disabled at (19482): br_device_event (./include/linux/spinlock.h:353 net/bridge/br.c:109)
| [   18.854823][ T1196] Preemption disabled at:
| [   18.854824][ T1196] 0x0
| [   18.854834][ T1196] Tainted: [W]=WARN
[   18.854835][ T1196] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   18.854836][ T1196] Call Trace:
[   18.854838][ T1196]  <TASK>
[   18.854839][ T1196]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   18.854846][ T1196]  __might_resched.cold (kernel/sched/core.c:9234)
[   18.854850][ T1196]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   18.854854][ T1196]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   18.854859][ T1196]  __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))
[   18.854861][ T1196]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   18.854867][ T1196]  ? 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)
[   18.854870][ T1196]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   18.854874][ T1196]  put_chars (drivers/char/virtio_console.c:1176)
[   18.854876][ T1196]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   18.854882][ T1196]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   18.854890][ T1196]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   18.854893][ T1196]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   18.854898][ T1196]  console_emit_next_record (kernel/printk/printk.c:3183)
[   18.854902][ T1196]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   18.854904][ T1196]  ? 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))
[   18.854907][ T1196]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   18.854910][ T1196]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   18.854914][ T1196]  console_flush_one_record (kernel/printk/printk.c:3268)
[   18.854918][ T1196]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   18.854920][ T1196]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   18.854925][ T1196]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   18.854928][ T1196]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   18.854930][ T1196]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   18.854931][ T1196]  ? 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)
[   18.854935][ T1196]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   18.854937][ T1196]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   18.854940][ T1196]  vprintk_emit (kernel/printk/printk.c:2479)
[   18.854943][ T1196]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   18.854944][ T1196]  ? mark_held_locks (kernel/locking/lockdep.c:4341)
[   18.854946][ T1196]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   18.854948][ T1196]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   18.854953][ T1196]  _printk (kernel/printk/printk.c:2504)
[   18.854956][ T1196]  ? snapshot_read.cold (user.c:?)
[   18.854964][ T1196]  br_set_state (net/bridge/br_stp.c:57 (discriminator 2))
[   18.854969][ T1196]  br_stp_disable_port (net/bridge/br_stp_if.c:106)
[   18.854972][ T1196]  br_device_event (net/bridge/br.c:111)
[   18.854974][ T1196]  ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:211 (discriminator 1) kernel/locking/spinlock.c:221 (discriminator 1))
[   18.854978][ T1196]  ? packet_sendmsg_spkt (af_packet.c:?)
[   18.854984][ T1196]  notifier_call_chain (kernel/notifier.c:85)
[   18.854989][ T1196]  __dev_notify_flags (net/core/dev.c:2313 net/core/dev.c:2327 net/core/dev.c:9855)
[   18.854994][ T1196]  ? netif_change_name (net/core/dev.c:1517)
[   18.854998][ T1196]  ? netif_set_allmulti (./include/net/netdev_lock.h:33)
[   18.855001][ T1196]  ? __kernel_text_address (kernel/extable.c:79)
[   18.855004][ T1196]  ? write_profile (profile.c:?)
[   18.855008][ T1196]  netif_change_flags (net/core/dev.c:9882)
[   18.855012][ T1196]  do_setlink.isra.0 (net/core/rtnetlink.c:3266 (discriminator 1))
[   18.855016][ T1196]  ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1))
[   18.855018][ T1196]  ? rtnl_link_get_size (net/core/rtnetlink.c:747)
[   18.855019][ T1196]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380)
[   18.855021][ T1196]  ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2))
[   18.855024][ T1196]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   18.855026][ T1196]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   18.855028][ T1196]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   18.855031][ T1196]  ? kasan_save_stack (mm/kasan/common.c:58)
[   18.855033][ T1196]  ? kasan_save_stack (mm/kasan/common.c:57)
[   18.855034][ T1196]  ? kasan_save_track (mm/kasan/common.c:78)
[   18.855036][ T1196]  ? __kasan_kmalloc (mm/kasan/common.c:398 mm/kasan/common.c:415)
[   18.855038][ T1196]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   18.855040][ T1196]  ? snd_ac97_proc_read_main (sound/pci/ac97/ac97_proc.c:320)
[   18.855043][ T1196]  ? ___sys_sendmsg (net/socket.c:2758)
[   18.855047][ T1196]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   18.855049][ T1196]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   18.855051][ T1196]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   18.855053][ T1196]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   18.855055][ T1196]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   18.855056][ T1196]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   18.855057][ T1196]  ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22))
[   18.855060][ T1196]  ? __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)
[   18.855061][ T1196]  ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1))
[   18.855063][ T1196]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   18.855066][ T1196]  ? ww_mutex_lock (kernel/locking/mutex.c:934)
[   18.855070][ T1196]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   18.855072][ T1196]  ? __rtnl_newlink (net/core/rtnetlink.c:4063)
[   18.855077][ T1196]  rtnl_newlink (net/core/rtnetlink.c:4215)
[   18.855083][ T1196]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   18.855085][ T1196]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   18.855089][ T1196]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   18.855091][ T1196]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   18.855093][ T1196]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   18.855095][ T1196]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   18.855099][ T1196]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   18.855101][ T1196]  rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   18.855104][ T1196]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   18.855106][ T1196]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   18.855110][ T1196]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   18.855112][ T1196]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   18.855116][ T1196]  netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   18.855119][ T1196]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   18.855121][ T1196]  ? netlink_ack (./include/linux/skbuff.h:2718)
[   18.855128][ T1196]  ? 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))
[   18.855130][ T1196]  ? 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))
[   18.855134][ T1196]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   18.855138][ T1196]  ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   18.855141][ T1196]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   18.855145][ T1196]  netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   18.855149][ T1196]  ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7))
[   18.855153][ T1196]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   18.855155][ T1196]  ? __import_iovec (lib/iov_iter.c:1358 lib/iov_iter.c:1373)
[   18.855160][ T1196]  __sock_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4))
[   18.855163][ T1196]  ____sys_sendmsg (net/socket.c:2713)
[   18.855165][ T1196]  ? copy_msghdr_from_user (net/socket.c:2650)
[   18.855167][ T1196]  ? sock_write_iter (net/socket.c:1269)
[   18.855169][ T1196]  ? move_addr_to_kernel (net/socket.c:258)
[   18.855176][ T1196]  ___sys_sendmsg (net/socket.c:2767)
[   18.855179][ T1196]  ? copy_msghdr_from_user (net/socket.c:2619)
[   18.855195][ T1196]  __sys_sendmsg (net/socket.c:2799)
[   18.855198][ T1196]  ? __sys_sendmsg_sock (net/socket.c:2780)
[   18.855205][ T1196]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   18.855208][ T1196]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   18.855211][ T1196]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   18.855214][ T1196]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   18.855216][ T1196] RIP: 0033:0x7ffb1ec3d54e
[   18.855218][ T1196] 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
[   18.855220][ T1196] RSP: 002b:00007fff78fefb40 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
[   18.855222][ T1196] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007ffb1ec3d54e
[   18.855224][ T1196] RDX: 0000000000000000 RSI: 00007fff78fefbf0 RDI: 0000000000000005
[   18.855225][ T1196] RBP: 00007fff78fefb50 R08: 0000000000000000 R09: 0000000000000000
[   18.855225][ T1196] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a9144bd
[   18.855226][ T1196] R13: 00000000004a1620 R14: 0000000000000000 R15: 00007fff78ff02b0
| [   20.037753][ T1334] softirqs last disabled at (21618): br_device_event (./include/linux/spinlock.h:353 net/bridge/br.c:119)
| [   20.037755][ T1334] Preemption disabled at:
| [   20.037756][ T1334] 0x0
| [   20.037766][ T1334] Tainted: [W]=WARN
[   20.037766][ T1334] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   20.037768][ T1334] Call Trace:
[   20.037770][ T1334]  <TASK>
[   20.037771][ T1334]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   20.037778][ T1334]  __might_resched.cold (kernel/sched/core.c:9234)
[   20.037782][ T1334]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   20.037786][ T1334]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   20.037790][ T1334]  __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))
[   20.037792][ T1334]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   20.037799][ T1334]  ? 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)
[   20.037802][ T1334]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   20.037805][ T1334]  put_chars (drivers/char/virtio_console.c:1176)
[   20.037808][ T1334]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   20.037809][ T1334]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   20.037812][ T1334]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   20.037818][ T1334]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   20.037825][ T1334]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   20.037828][ T1334]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   20.037830][ T1334]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   20.037834][ T1334]  console_emit_next_record (kernel/printk/printk.c:3183)
[   20.037838][ T1334]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   20.037840][ T1334]  ? 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))
[   20.037843][ T1334]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   20.037844][ T1334]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   20.037848][ T1334]  console_flush_one_record (kernel/printk/printk.c:3268)
[   20.037852][ T1334]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   20.037854][ T1334]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   20.037859][ T1334]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   20.037862][ T1334]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   20.037864][ T1334]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   20.037866][ T1334]  ? 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)
[   20.037869][ T1334]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   20.037871][ T1334]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   20.037874][ T1334]  vprintk_emit (kernel/printk/printk.c:2479)
[   20.037877][ T1334]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   20.037879][ T1334]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   20.037881][ T1334]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   20.037885][ T1334]  _printk (kernel/printk/printk.c:2504)
[   20.037889][ T1334]  ? snapshot_read.cold (user.c:?)
[   20.037894][ T1334]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   20.037897][ T1334]  br_set_state (net/bridge/br_stp.c:57 (discriminator 2))
[   20.037902][ T1334]  br_init_port (net/bridge/br_stp_if.c:39)
[   20.037904][ T1334]  br_stp_enable_port (net/bridge/br_stp_if.c:93)
[   20.037906][ T1334]  br_device_event (net/bridge/br.c:120)
[   20.037909][ T1334]  ? packet_sendmsg_spkt (af_packet.c:?)
[   20.037911][ T1334]  ? nlmsg_notify (./include/net/netlink.h:1165 ./include/net/netlink.h:1184 net/netlink/af_netlink.c:2599)
[   20.037917][ T1334]  notifier_call_chain (kernel/notifier.c:85)
[   20.037923][ T1334]  __dev_notify_flags (net/core/dev.c:2313 net/core/dev.c:2327 net/core/dev.c:9853)
[   20.037928][ T1334]  ? netif_change_name (net/core/dev.c:1517)
[   20.037931][ T1334]  ? netif_set_allmulti (./include/net/netdev_lock.h:33)
[   20.037934][ T1334]  ? kernel_text_address (kernel/extable.c:125 kernel/extable.c:94)
[   20.037937][ T1334]  ? __kernel_text_address (kernel/extable.c:79)
[   20.037938][ T1334]  ? write_profile (profile.c:?)
[   20.037943][ T1334]  netif_change_flags (net/core/dev.c:9882)
[   20.037947][ T1334]  do_setlink.isra.0 (net/core/rtnetlink.c:3266 (discriminator 1))
[   20.037950][ T1334]  ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1))
[   20.037952][ T1334]  ? rtnl_link_get_size (net/core/rtnetlink.c:747)
[   20.037953][ T1334]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380)
[   20.037955][ T1334]  ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2))
[   20.037958][ T1334]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   20.037960][ T1334]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   20.037962][ T1334]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   20.037964][ T1334]  ? kasan_save_stack (mm/kasan/common.c:58)
[   20.037967][ T1334]  ? kasan_save_stack (mm/kasan/common.c:57)
[   20.037968][ T1334]  ? kasan_save_track (mm/kasan/common.c:78)
[   20.037969][ T1334]  ? __kasan_kmalloc (mm/kasan/common.c:398 mm/kasan/common.c:415)
[   20.037971][ T1334]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   20.037973][ T1334]  ? snd_ac97_proc_read_main (sound/pci/ac97/ac97_proc.c:320)
[   20.037976][ T1334]  ? ___sys_sendmsg (net/socket.c:2758)
[   20.037980][ T1334]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   20.037982][ T1334]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   20.037984][ T1334]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   20.037986][ T1334]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   20.037987][ T1334]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   20.037988][ T1334]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   20.037990][ T1334]  ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22))
[   20.037993][ T1334]  ? __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)
[   20.037995][ T1334]  ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1))
[   20.037997][ T1334]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   20.038000][ T1334]  ? ww_mutex_lock (kernel/locking/mutex.c:934)
[   20.038004][ T1334]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   20.038006][ T1334]  ? __rtnl_newlink (net/core/rtnetlink.c:4063)
[   20.038011][ T1334]  rtnl_newlink (net/core/rtnetlink.c:4215)
[   20.038016][ T1334]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   20.038018][ T1334]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   20.038022][ T1334]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   20.038024][ T1334]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   20.038026][ T1334]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   20.038028][ T1334]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   20.038032][ T1334]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   20.038034][ T1334]  rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   20.038037][ T1334]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   20.038038][ T1334]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   20.038043][ T1334]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   20.038045][ T1334]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   20.038048][ T1334]  netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   20.038050][ T1334]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   20.038053][ T1334]  ? netlink_ack (./include/linux/skbuff.h:2718)
[   20.038059][ T1334]  ? 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))
[   20.038061][ T1334]  ? 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))
[   20.038066][ T1334]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   20.038069][ T1334]  ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   20.038072][ T1334]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   20.038076][ T1334]  netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   20.038080][ T1334]  ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7))
[   20.038084][ T1334]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   20.038086][ T1334]  ? __import_iovec (lib/iov_iter.c:1358 lib/iov_iter.c:1373)
[   20.038091][ T1334]  __sock_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4))
[   20.038094][ T1334]  ____sys_sendmsg (net/socket.c:2713)
[   20.038096][ T1334]  ? copy_msghdr_from_user (net/socket.c:2650)
[   20.038098][ T1334]  ? sock_write_iter (net/socket.c:1269)
[   20.038100][ T1334]  ? move_addr_to_kernel (net/socket.c:258)
[   20.038107][ T1334]  ___sys_sendmsg (net/socket.c:2767)
[   20.038110][ T1334]  ? copy_msghdr_from_user (net/socket.c:2619)
[   20.038125][ T1334]  __sys_sendmsg (net/socket.c:2799)
[   20.038128][ T1334]  ? __sys_sendmsg_sock (net/socket.c:2780)
[   20.038134][ T1334]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   20.038137][ T1334]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   20.038140][ T1334]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   20.038143][ T1334]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   20.038145][ T1334] RIP: 0033:0x7fde5e04154e
[   20.038148][ T1334] 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
[   20.038149][ T1334] RSP: 002b:00007ffc38b15500 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
[   20.038152][ T1334] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007fde5e04154e
[   20.038153][ T1334] RDX: 0000000000000000 RSI: 00007ffc38b155b0 RDI: 0000000000000005
[   20.038154][ T1334] RBP: 00007ffc38b15510 R08: 0000000000000000 R09: 0000000000000000
[   20.038155][ T1334] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a9144be
[   20.038156][ T1334] R13: 00000000004a1620 R14: 0000000000000000 R15: 00007ffc38b15c70
| [   21.600429][ T1073] softirqs last disabled at (69300): br_port_carrier_check (./include/linux/spinlock.h:353 net/bridge/br_if.c:87)
| [   21.600432][ T1073] Preemption disabled at:
| [   21.600432][ T1073] 0x0
| [   21.600442][ T1073] Tainted: [W]=WARN
[   21.600443][ T1073] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   21.600445][ T1073] Workqueue: events_unbound linkwatch_event
[   21.600448][ T1073] Call Trace:
[   21.600449][ T1073]  <TASK>
[   21.600451][ T1073]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   21.600458][ T1073]  __might_resched.cold (kernel/sched/core.c:9234)
[   21.600462][ T1073]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   21.600466][ T1073]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   21.600471][ T1073]  __kmalloc_noprof (./include/linux/sched/mm.h:322 (discriminator 2) mm/slub.c:4636 (discriminator 2) mm/slub.c:4974 (discriminator 2) mm/slub.c:5413 (discriminator 2) mm/slub.c:5439 (discriminator 2))
[   21.600472][ T1073]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   21.600479][ T1073]  ? do_raw_spin_unlock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:32 ./include/asm-generic/qspinlock.h:58 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141)
[   21.600482][ T1073]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   21.600486][ T1073]  put_chars (drivers/char/virtio_console.c:1176)
[   21.600488][ T1073]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   21.600490][ T1073]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   21.600494][ T1073]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   21.600496][ T1073]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   21.600501][ T1073]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   21.600505][ T1073]  ? mark_usage (kernel/locking/lockdep.c:4690)
[   21.600506][ T1073]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   21.600508][ T1073]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   21.600512][ T1073]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   21.600514][ T1073]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   21.600522][ T1073]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   21.600526][ T1073]  console_emit_next_record (kernel/printk/printk.c:3183)
[   21.600530][ T1073]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   21.600532][ T1073]  ? console_flush_one_record (./include/linux/rcupdate.h:314 (discriminator 2) ./include/linux/srcu.h:439 (discriminator 2) kernel/printk/printk.c:291 (discriminator 2) kernel/printk/printk.c:3246 (discriminator 2))
[   21.600535][ T1073]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   21.600537][ T1073]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   21.600542][ T1073]  console_flush_one_record (kernel/printk/printk.c:3268)
[   21.600546][ T1073]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   21.600548][ T1073]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   21.600553][ T1073]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   21.600556][ T1073]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   21.600558][ T1073]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   21.600560][ T1073]  ? 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)
[   21.600563][ T1073]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   21.600565][ T1073]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   21.600568][ T1073]  vprintk_emit (kernel/printk/printk.c:2479)
[   21.600571][ T1073]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   21.600573][ T1073]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   21.600575][ T1073]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   21.600579][ T1073]  _printk (kernel/printk/printk.c:2504)
[   21.600583][ T1073]  ? snapshot_read.cold (user.c:?)
[   21.600588][ T1073]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   21.600592][ T1073]  br_set_state (net/bridge/br_stp.c:57 (discriminator 2))
[   21.600596][ T1073]  br_init_port (net/bridge/br_stp_if.c:39)
[   21.600599][ T1073]  br_stp_enable_port (net/bridge/br_stp_if.c:93)
[   21.600604][ T1073]  br_port_carrier_check (net/bridge/br_if.c:90)
[   21.600608][ T1073]  br_device_event (net/bridge/br.c:101)
[   21.600612][ T1073]  ? packet_sendmsg_spkt (af_packet.c:?)
[   21.600613][ T1073]  ? nlmsg_notify (./include/net/netlink.h:1165 ./include/net/netlink.h:1184 net/netlink/af_netlink.c:2599)
[   21.600620][ T1073]  notifier_call_chain (kernel/notifier.c:85)
[   21.600626][ T1073]  netif_state_change (net/core/dev.c:1625)
[   21.600631][ T1073]  ? call_netdevice_notifiers_info (./include/net/net_namespace.h:422 (discriminator 7))
[   21.600635][ T1073]  ? linkwatch_do_dev (net/core/link_watch.c:182 net/core/link_watch.c:166)
[   21.600637][ T1073]  __linkwatch_run_queue (net/core/link_watch.c:240)
[   21.600641][ T1073]  ? linkwatch_do_dev (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   21.600643][ T1073]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   21.600647][ T1073]  linkwatch_event (net/core/link_watch.c:314 (discriminator 11))
[   21.600650][ T1073]  ? __linkwatch_run_queue (net/core/link_watch.c:213)
[   21.600653][ T1073]  process_one_work (kernel/workqueue.c:3387)
[   21.600660][ T1073]  ? __queue_delayed_work (kernel/workqueue.c:2622)
[   21.600663][ T1073]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   21.600670][ T1073]  worker_thread (kernel/workqueue.c:3470 kernel/workqueue.c:3551)
[   21.600674][ T1073]  ? rescuer_thread (./include/linux/list.h:419 (discriminator 3))
[   21.600677][ T1073]  ? __kthread_parkme (./include/linux/instrumented.h:82 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 kernel/kthread.c:272)
[   21.600679][ T1073]  ? rescuer_thread (./include/linux/list.h:419 (discriminator 3))
[   21.600682][ T1073]  ? rescuer_thread (./include/linux/list.h:419 (discriminator 3))
[   21.600684][ T1073]  kthread (kernel/kthread.c:436)
[   21.600686][ T1073]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[   21.600690][ T1073]  ? kthread_affine_preferred (kernel/kthread.c:857)
[   21.600693][ T1073]  ret_from_fork (arch/x86/kernel/process.c:158)
[   21.600697][ T1073]  ? arch_exit_to_user_mode_prepare.isra.0 (arch/x86/entry/vdso/vma.c:80 (discriminator 1))
[   21.600700][ T1073]  ? __switch_to (arch/x86/kernel/process_64.c:403 arch/x86/kernel/process_64.c:663)
[   21.600703][ T1073]  ? kthread_affine_preferred (kernel/kthread.c:857)
[   21.600706][ T1073]  ret_from_fork_asm (arch/x86/entry/entry_64.S:245)
| [   22.764534][ T1602] softirqs last disabled at (21882): br_device_event (./include/linux/spinlock.h:353 net/bridge/br.c:119)
| [   22.764537][ T1602] Preemption disabled at:
| [   22.764537][ T1602] 0x0
| [   22.764547][ T1602] Tainted: [W]=WARN
[   22.764548][ T1602] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   22.764550][ T1602] Call Trace:
[   22.764552][ T1602]  <TASK>
[   22.764553][ T1602]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   22.764560][ T1602]  __might_resched.cold (kernel/sched/core.c:9234)
[   22.764564][ T1602]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   22.764568][ T1602]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   22.764572][ T1602]  __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))
[   22.764574][ T1602]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   22.764581][ T1602]  ? 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)
[   22.764583][ T1602]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   22.764587][ T1602]  put_chars (drivers/char/virtio_console.c:1176)
[   22.764589][ T1602]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   22.764591][ T1602]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   22.764594][ T1602]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   22.764600][ T1602]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   22.764611][ T1602]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   22.764614][ T1602]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   22.764615][ T1602]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   22.764619][ T1602]  console_emit_next_record (kernel/printk/printk.c:3183)
[   22.764623][ T1602]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   22.764625][ T1602]  ? 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))
[   22.764628][ T1602]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   22.764630][ T1602]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   22.764634][ T1602]  console_flush_one_record (kernel/printk/printk.c:3268)
[   22.764638][ T1602]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   22.764640][ T1602]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   22.764645][ T1602]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   22.764648][ T1602]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   22.764650][ T1602]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   22.764652][ T1602]  ? 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)
[   22.764655][ T1602]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   22.764657][ T1602]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   22.764660][ T1602]  vprintk_emit (kernel/printk/printk.c:2479)
[   22.764663][ T1602]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   22.764665][ T1602]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   22.764667][ T1602]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   22.764671][ T1602]  _printk (kernel/printk/printk.c:2504)
[   22.764675][ T1602]  ? snapshot_read.cold (user.c:?)
[   22.764680][ T1602]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   22.764683][ T1602]  br_set_state (net/bridge/br_stp.c:57 (discriminator 2))
[   22.764688][ T1602]  br_init_port (net/bridge/br_stp_if.c:39)
[   22.764690][ T1602]  br_stp_enable_port (net/bridge/br_stp_if.c:93)
[   22.764692][ T1602]  br_device_event (net/bridge/br.c:120)
[   22.764695][ T1602]  ? packet_sendmsg_spkt (af_packet.c:?)
[   22.764697][ T1602]  ? nlmsg_notify (./include/net/netlink.h:1165 ./include/net/netlink.h:1184 net/netlink/af_netlink.c:2599)
[   22.764703][ T1602]  notifier_call_chain (kernel/notifier.c:85)
[   22.764709][ T1602]  __dev_notify_flags (net/core/dev.c:2313 net/core/dev.c:2327 net/core/dev.c:9853)
[   22.764714][ T1602]  ? netif_change_name (net/core/dev.c:1517)
[   22.764717][ T1602]  ? netif_set_allmulti (./include/net/netdev_lock.h:33)
[   22.764720][ T1602]  ? kernel_text_address (kernel/extable.c:125 kernel/extable.c:94)
[   22.764723][ T1602]  ? __kernel_text_address (kernel/extable.c:79)
[   22.764724][ T1602]  ? write_profile (profile.c:?)
[   22.764729][ T1602]  netif_change_flags (net/core/dev.c:9882)
[   22.764733][ T1602]  do_setlink.isra.0 (net/core/rtnetlink.c:3266 (discriminator 1))
[   22.764736][ T1602]  ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1))
[   22.764738][ T1602]  ? rtnl_link_get_size (net/core/rtnetlink.c:747)
[   22.764739][ T1602]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380)
[   22.764741][ T1602]  ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2))
[   22.764744][ T1602]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   22.764746][ T1602]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   22.764748][ T1602]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   22.764750][ T1602]  ? kasan_save_stack (mm/kasan/common.c:58)
[   22.764753][ T1602]  ? kasan_save_stack (mm/kasan/common.c:57)
[   22.764754][ T1602]  ? kasan_save_track (mm/kasan/common.c:78)
[   22.764755][ T1602]  ? __kasan_kmalloc (mm/kasan/common.c:398 mm/kasan/common.c:415)
[   22.764758][ T1602]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   22.764760][ T1602]  ? snd_ac97_proc_read_main (sound/pci/ac97/ac97_proc.c:320)
[   22.764762][ T1602]  ? ___sys_sendmsg (net/socket.c:2758)
[   22.764766][ T1602]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   22.764768][ T1602]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   22.764771][ T1602]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   22.764772][ T1602]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   22.764774][ T1602]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   22.764775][ T1602]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   22.764777][ T1602]  ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22))
[   22.764779][ T1602]  ? __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)
[   22.764781][ T1602]  ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1))
[   22.764783][ T1602]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   22.764786][ T1602]  ? ww_mutex_lock (kernel/locking/mutex.c:934)
[   22.764790][ T1602]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   22.764792][ T1602]  ? __rtnl_newlink (net/core/rtnetlink.c:4063)
[   22.764797][ T1602]  rtnl_newlink (net/core/rtnetlink.c:4215)
[   22.764803][ T1602]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   22.764804][ T1602]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   22.764809][ T1602]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   22.764811][ T1602]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   22.764813][ T1602]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   22.764814][ T1602]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   22.764818][ T1602]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   22.764820][ T1602]  rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   22.764823][ T1602]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   22.764824][ T1602]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   22.764829][ T1602]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   22.764831][ T1602]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   22.764834][ T1602]  netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   22.764836][ T1602]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   22.764839][ T1602]  ? netlink_ack (./include/linux/skbuff.h:2718)
[   22.764845][ T1602]  ? 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))
[   22.764847][ T1602]  ? 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))
[   22.764852][ T1602]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   22.764855][ T1602]  ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   22.764858][ T1602]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   22.764862][ T1602]  netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   22.764866][ T1602]  ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7))
[   22.764870][ T1602]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   22.764871][ T1602]  ? __import_iovec (lib/iov_iter.c:1358 lib/iov_iter.c:1373)
[   22.764877][ T1602]  __sock_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4))
[   22.764879][ T1602]  ____sys_sendmsg (net/socket.c:2713)
[   22.764882][ T1602]  ? copy_msghdr_from_user (net/socket.c:2650)
[   22.764884][ T1602]  ? sock_write_iter (net/socket.c:1269)
[   22.764885][ T1602]  ? move_addr_to_kernel (net/socket.c:258)
[   22.764893][ T1602]  ___sys_sendmsg (net/socket.c:2767)
[   22.764895][ T1602]  ? copy_msghdr_from_user (net/socket.c:2619)
[   22.764911][ T1602]  __sys_sendmsg (net/socket.c:2799)
[   22.764914][ T1602]  ? __sys_sendmsg_sock (net/socket.c:2780)
[   22.764920][ T1602]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   22.764923][ T1602]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   22.764926][ T1602]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   22.764928][ T1602]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   22.764930][ T1602] RIP: 0033:0x7f5d0cadb54e
[   22.764933][ T1602] 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
[   22.764934][ T1602] RSP: 002b:00007ffcbcb95780 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
[   22.764937][ T1602] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f5d0cadb54e
[   22.764938][ T1602] RDX: 0000000000000000 RSI: 00007ffcbcb95830 RDI: 0000000000000005
[   22.764939][ T1602] RBP: 00007ffcbcb95790 R08: 0000000000000000 R09: 0000000000000000
[   22.764940][ T1602] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a9144c1
[   22.764940][ T1602] R13: 00000000004a1620 R14: 0000000000000000 R15: 00007ffcbcb95ef0
| [   23.770216][ T1712] softirqs last disabled at (26680): br_device_event (./include/linux/spinlock.h:353 net/bridge/br.c:109)
| [   23.770218][ T1712] Preemption disabled at:
| [   23.770219][ T1712] 0x0
| [   23.770229][ T1712] Tainted: [W]=WARN
[   23.770230][ T1712] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   23.770231][ T1712] Call Trace:
[   23.770233][ T1712]  <TASK>
[   23.770234][ T1712]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   23.770241][ T1712]  __might_resched.cold (kernel/sched/core.c:9234)
[   23.770245][ T1712]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   23.770249][ T1712]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   23.770254][ T1712]  __kmalloc_noprof (./include/linux/sched/mm.h:322 (discriminator 2) mm/slub.c:4636 (discriminator 2) mm/slub.c:4974 (discriminator 2) mm/slub.c:5413 (discriminator 2) mm/slub.c:5439 (discriminator 2))
[   23.770255][ T1712]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   23.770262][ T1712]  ? do_raw_spin_unlock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:32 ./include/asm-generic/qspinlock.h:58 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141)
[   23.770265][ T1712]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   23.770268][ T1712]  put_chars (drivers/char/virtio_console.c:1176)
[   23.770271][ T1712]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   23.770277][ T1712]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   23.770284][ T1712]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   23.770287][ T1712]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   23.770291][ T1712]  console_emit_next_record (kernel/printk/printk.c:3183)
[   23.770295][ T1712]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   23.770297][ T1712]  ? console_flush_one_record (./include/linux/rcupdate.h:314 (discriminator 2) ./include/linux/srcu.h:439 (discriminator 2) kernel/printk/printk.c:291 (discriminator 2) kernel/printk/printk.c:3246 (discriminator 2))
[   23.770300][ T1712]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   23.770303][ T1712]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   23.770306][ T1712]  console_flush_one_record (kernel/printk/printk.c:3268)
[   23.770310][ T1712]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   23.770312][ T1712]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   23.770317][ T1712]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   23.770320][ T1712]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   23.770322][ T1712]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   23.770324][ T1712]  ? 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)
[   23.770327][ T1712]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   23.770329][ T1712]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   23.770332][ T1712]  vprintk_emit (kernel/printk/printk.c:2479)
[   23.770335][ T1712]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   23.770336][ T1712]  ? mark_held_locks (kernel/locking/lockdep.c:4341)
[   23.770338][ T1712]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   23.770340][ T1712]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   23.770344][ T1712]  _printk (kernel/printk/printk.c:2504)
[   23.770348][ T1712]  ? snapshot_read.cold (user.c:?)
[   23.770355][ T1712]  br_set_state (net/bridge/br_stp.c:57 (discriminator 2))
[   23.770360][ T1712]  br_stp_disable_port (net/bridge/br_stp_if.c:106)
[   23.770363][ T1712]  br_device_event (net/bridge/br.c:111)
[   23.770365][ T1712]  ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:211 (discriminator 1) kernel/locking/spinlock.c:221 (discriminator 1))
[   23.770368][ T1712]  ? packet_sendmsg_spkt (af_packet.c:?)
[   23.770374][ T1712]  notifier_call_chain (kernel/notifier.c:85)
[   23.770380][ T1712]  __dev_notify_flags (net/core/dev.c:2313 net/core/dev.c:2327 net/core/dev.c:9855)
[   23.770385][ T1712]  ? netif_change_name (net/core/dev.c:1517)
[   23.770388][ T1712]  ? netif_set_allmulti (./include/net/netdev_lock.h:33)
[   23.770391][ T1712]  ? __kernel_text_address (kernel/extable.c:79)
[   23.770394][ T1712]  ? write_profile (profile.c:?)
[   23.770399][ T1712]  netif_change_flags (net/core/dev.c:9882)
[   23.770402][ T1712]  do_setlink.isra.0 (net/core/rtnetlink.c:3266 (discriminator 1))
[   23.770406][ T1712]  ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1))
[   23.770408][ T1712]  ? rtnl_link_get_size (net/core/rtnetlink.c:747)
[   23.770409][ T1712]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380)
[   23.770411][ T1712]  ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2))
[   23.770414][ T1712]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   23.770416][ T1712]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   23.770418][ T1712]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   23.770420][ T1712]  ? kasan_save_stack (mm/kasan/common.c:58)
[   23.770423][ T1712]  ? kasan_save_stack (mm/kasan/common.c:57)
[   23.770424][ T1712]  ? kasan_save_track (mm/kasan/common.c:78)
[   23.770425][ T1712]  ? __kasan_kmalloc (mm/kasan/common.c:398 mm/kasan/common.c:415)
[   23.770427][ T1712]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   23.770429][ T1712]  ? snd_ac97_proc_read_main (sound/pci/ac97/ac97_proc.c:320)
[   23.770432][ T1712]  ? ___sys_sendmsg (net/socket.c:2758)
[   23.770436][ T1712]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   23.770438][ T1712]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   23.770440][ T1712]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   23.770442][ T1712]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   23.770444][ T1712]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   23.770445][ T1712]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   23.770446][ T1712]  ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22))
[   23.770448][ T1712]  ? __mutex_lock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:3188 kernel/locking/mutex.c:89 kernel/locking/mutex.c:134 kernel/locking/mutex.c:649 kernel/locking/mutex.c:821)
[   23.770450][ T1712]  ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1))
[   23.770451][ T1712]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   23.770455][ T1712]  ? ww_mutex_lock (kernel/locking/mutex.c:934)
[   23.770458][ T1712]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   23.770460][ T1712]  ? __rtnl_newlink (net/core/rtnetlink.c:4063)
[   23.770465][ T1712]  rtnl_newlink (net/core/rtnetlink.c:4215)
[   23.770471][ T1712]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   23.770473][ T1712]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   23.770477][ T1712]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   23.770479][ T1712]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   23.770481][ T1712]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   23.770483][ T1712]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   23.770487][ T1712]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   23.770489][ T1712]  rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   23.770492][ T1712]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   23.770493][ T1712]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   23.770497][ T1712]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   23.770499][ T1712]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   23.770503][ T1712]  netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   23.770506][ T1712]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   23.770509][ T1712]  ? netlink_ack (./include/linux/skbuff.h:2718)
[   23.770515][ T1712]  ? netlink_deliver_tap (./include/linux/rcupdate.h:319 (discriminator 2) ./include/linux/rcupdate.h:880 (discriminator 2) ./include/net/netns/generic.h:48 (discriminator 2) net/netlink/af_netlink.c:334 (discriminator 2))
[   23.770519][ T1712]  ? netlink_deliver_tap (./include/linux/rcupdate.h:319 (discriminator 2) ./include/linux/rcupdate.h:880 (discriminator 2) net/netlink/af_netlink.c:341 (discriminator 2))
[   23.770523][ T1712]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   23.770527][ T1712]  ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   23.770530][ T1712]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   23.770534][ T1712]  netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   23.770538][ T1712]  ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7))
[   23.770542][ T1712]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   23.770543][ T1712]  ? __import_iovec (lib/iov_iter.c:1358 lib/iov_iter.c:1373)
[   23.770548][ T1712]  __sock_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4))
[   23.770551][ T1712]  ____sys_sendmsg (net/socket.c:2713)
[   23.770553][ T1712]  ? copy_msghdr_from_user (net/socket.c:2650)
[   23.770556][ T1712]  ? sock_write_iter (net/socket.c:1269)
[   23.770557][ T1712]  ? move_addr_to_kernel (net/socket.c:258)
[   23.770564][ T1712]  ___sys_sendmsg (net/socket.c:2767)
[   23.770567][ T1712]  ? copy_msghdr_from_user (net/socket.c:2619)
[   23.770583][ T1712]  __sys_sendmsg (net/socket.c:2799)
[   23.770586][ T1712]  ? __sys_sendmsg_sock (net/socket.c:2780)
[   23.770592][ T1712]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   23.770595][ T1712]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   23.770598][ T1712]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   23.770601][ T1712]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   23.770603][ T1712] RIP: 0033:0x7f8cefe8f54e
[   23.770605][ T1712] Code: 4d 89 d8 e8 b4 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 03 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 b4 bd 00 00       	call   0xbdbc
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 03 ff ff ff       	call   0xffffffffffffff3c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 03 ff ff ff       	call   0xffffffffffffff12
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[   23.770607][ T1712] RSP: 002b:00007fffdd698d70 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
[   23.770609][ T1712] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f8cefe8f54e
[   23.770614][ T1712] RDX: 0000000000000000 RSI: 00007fffdd698e20 RDI: 0000000000000005
[   23.770615][ T1712] RBP: 00007fffdd698d80 R08: 0000000000000000 R09: 0000000000000000
[   23.770616][ T1712] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a9144c2
[   23.770616][ T1712] R13: 00000000004a1620 R14: 0000000000000000 R15: 00007fffdd6994e0
| [   25.024056][ T1827] softirqs last disabled at (20340): br_device_event (./include/linux/spinlock.h:353 net/bridge/br.c:109)
| [   25.024058][ T1827] Preemption disabled at:
| [   25.024058][ T1827] 0x0
| [   25.024068][ T1827] Tainted: [W]=WARN
[   25.024069][ T1827] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   25.024071][ T1827] Call Trace:
[   25.024072][ T1827]  <TASK>
[   25.024073][ T1827]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   25.024080][ T1827]  __might_resched.cold (kernel/sched/core.c:9234)
[   25.024084][ T1827]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   25.024088][ T1827]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   25.024092][ T1827]  __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))
[   25.024094][ T1827]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   25.024100][ T1827]  ? 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)
[   25.024103][ T1827]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   25.024107][ T1827]  put_chars (drivers/char/virtio_console.c:1176)
[   25.024109][ T1827]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   25.024115][ T1827]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   25.024122][ T1827]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   25.024126][ T1827]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   25.024130][ T1827]  console_emit_next_record (kernel/printk/printk.c:3183)
[   25.024134][ T1827]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   25.024136][ T1827]  ? 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))
[   25.024139][ T1827]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   25.024141][ T1827]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   25.024145][ T1827]  console_flush_one_record (kernel/printk/printk.c:3268)
[   25.024149][ T1827]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   25.024151][ T1827]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   25.024157][ T1827]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   25.024159][ T1827]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   25.024161][ T1827]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   25.024163][ T1827]  ? 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)
[   25.024166][ T1827]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   25.024168][ T1827]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   25.024171][ T1827]  vprintk_emit (kernel/printk/printk.c:2479)
[   25.024174][ T1827]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   25.024175][ T1827]  ? mark_held_locks (kernel/locking/lockdep.c:4341)
[   25.024178][ T1827]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   25.024179][ T1827]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   25.024184][ T1827]  _printk (kernel/printk/printk.c:2504)
[   25.024187][ T1827]  ? snapshot_read.cold (user.c:?)
[   25.024195][ T1827]  br_set_state (net/bridge/br_stp.c:57 (discriminator 2))
[   25.024199][ T1827]  br_stp_disable_port (net/bridge/br_stp_if.c:106)
[   25.024202][ T1827]  br_device_event (net/bridge/br.c:111)
[   25.024204][ T1827]  ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:211 (discriminator 1) kernel/locking/spinlock.c:221 (discriminator 1))
[   25.024208][ T1827]  ? packet_sendmsg_spkt (af_packet.c:?)
[   25.024213][ T1827]  notifier_call_chain (kernel/notifier.c:85)
[   25.024219][ T1827]  __dev_notify_flags (net/core/dev.c:2313 net/core/dev.c:2327 net/core/dev.c:9855)
[   25.024224][ T1827]  ? netif_change_name (net/core/dev.c:1517)
[   25.024227][ T1827]  ? netif_set_allmulti (./include/net/netdev_lock.h:33)
[   25.024231][ T1827]  ? __kernel_text_address (kernel/extable.c:79)
[   25.024233][ T1827]  ? write_profile (profile.c:?)
[   25.024237][ T1827]  netif_change_flags (net/core/dev.c:9882)
[   25.024241][ T1827]  do_setlink.isra.0 (net/core/rtnetlink.c:3266 (discriminator 1))
[   25.024244][ T1827]  ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1))
[   25.024246][ T1827]  ? rtnl_link_get_size (net/core/rtnetlink.c:747)
[   25.024248][ T1827]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380)
[   25.024250][ T1827]  ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2))
[   25.024253][ T1827]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   25.024255][ T1827]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   25.024256][ T1827]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   25.024259][ T1827]  ? kasan_save_stack (mm/kasan/common.c:58)
[   25.024261][ T1827]  ? kasan_save_stack (mm/kasan/common.c:57)
[   25.024262][ T1827]  ? kasan_save_track (mm/kasan/common.c:78)
[   25.024263][ T1827]  ? __kasan_kmalloc (mm/kasan/common.c:398 mm/kasan/common.c:415)
[   25.024266][ T1827]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   25.024267][ T1827]  ? snd_ac97_proc_read_main (sound/pci/ac97/ac97_proc.c:320)
[   25.024270][ T1827]  ? ___sys_sendmsg (net/socket.c:2758)
[   25.024274][ T1827]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   25.024276][ T1827]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   25.024278][ T1827]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   25.024280][ T1827]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   25.024282][ T1827]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   25.024283][ T1827]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   25.024284][ T1827]  ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22))
[   25.024287][ T1827]  ? __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)
[   25.024288][ T1827]  ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1))
[   25.024290][ T1827]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   25.024293][ T1827]  ? ww_mutex_lock (kernel/locking/mutex.c:934)
[   25.024297][ T1827]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   25.024299][ T1827]  ? __rtnl_newlink (net/core/rtnetlink.c:4063)
[   25.024304][ T1827]  rtnl_newlink (net/core/rtnetlink.c:4215)
[   25.024309][ T1827]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   25.024311][ T1827]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   25.024316][ T1827]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   25.024318][ T1827]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   25.024320][ T1827]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   25.024321][ T1827]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   25.024325][ T1827]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   25.024327][ T1827]  rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   25.024330][ T1827]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   25.024332][ T1827]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   25.024336][ T1827]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   25.024338][ T1827]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   25.024341][ T1827]  netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   25.024344][ T1827]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   25.024347][ T1827]  ? netlink_ack (./include/linux/skbuff.h:2718)
[   25.024354][ T1827]  ? 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))
[   25.024356][ T1827]  ? 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))
[   25.024360][ T1827]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   25.024364][ T1827]  ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   25.024366][ T1827]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   25.024371][ T1827]  netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   25.024375][ T1827]  ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7))
[   25.024378][ T1827]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   25.024380][ T1827]  ? __import_iovec (lib/iov_iter.c:1358 lib/iov_iter.c:1373)
[   25.024385][ T1827]  __sock_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4))
[   25.024388][ T1827]  ____sys_sendmsg (net/socket.c:2713)
[   25.024390][ T1827]  ? copy_msghdr_from_user (net/socket.c:2650)
[   25.024392][ T1827]  ? sock_write_iter (net/socket.c:1269)
[   25.024393][ T1827]  ? move_addr_to_kernel (net/socket.c:258)
[   25.024401][ T1827]  ___sys_sendmsg (net/socket.c:2767)
[   25.024403][ T1827]  ? copy_msghdr_from_user (net/socket.c:2619)
[   25.024419][ T1827]  __sys_sendmsg (net/socket.c:2799)
[   25.024422][ T1827]  ? __sys_sendmsg_sock (net/socket.c:2780)
[   25.024428][ T1827]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   25.024431][ T1827]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   25.024434][ T1827]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   25.024437][ T1827]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   25.024439][ T1827] RIP: 0033:0x7f84f802654e
[   25.024441][ T1827] 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
[   25.024443][ T1827] RSP: 002b:00007ffc7c22f200 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
[   25.024445][ T1827] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f84f802654e
[   25.024447][ T1827] RDX: 0000000000000000 RSI: 00007ffc7c22f2b0 RDI: 0000000000000005
[   25.024448][ T1827] RBP: 00007ffc7c22f210 R08: 0000000000000000 R09: 0000000000000000
[   25.024448][ T1827] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a9144c3
[   25.024449][ T1827] R13: 00000000004a1620 R14: 0000000000000000 R15: 00007ffc7c22f970
| [   26.207843][ T1965] softirqs last disabled at (25492): br_device_event (./include/linux/spinlock.h:353 net/bridge/br.c:119)
| [   26.207846][ T1965] Preemption disabled at:
| [   26.207846][ T1965] 0x0
| [   26.207856][ T1965] Tainted: [W]=WARN
[   26.207857][ T1965] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   26.207858][ T1965] Call Trace:
[   26.207860][ T1965]  <TASK>
[   26.207861][ T1965]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   26.207868][ T1965]  __might_resched.cold (kernel/sched/core.c:9234)
[   26.207872][ T1965]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   26.207876][ T1965]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   26.207881][ T1965]  __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))
[   26.207882][ T1965]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   26.207889][ T1965]  ? 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)
[   26.207891][ T1965]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   26.207895][ T1965]  put_chars (drivers/char/virtio_console.c:1176)
[   26.207897][ T1965]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   26.207899][ T1965]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   26.207902][ T1965]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   26.207908][ T1965]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   26.207915][ T1965]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   26.207918][ T1965]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   26.207920][ T1965]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   26.207924][ T1965]  console_emit_next_record (kernel/printk/printk.c:3183)
[   26.207928][ T1965]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   26.207930][ T1965]  ? 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))
[   26.207933][ T1965]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   26.207934][ T1965]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   26.207938][ T1965]  console_flush_one_record (kernel/printk/printk.c:3268)
[   26.207942][ T1965]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   26.207944][ T1965]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   26.207950][ T1965]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   26.207952][ T1965]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   26.207954][ T1965]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   26.207956][ T1965]  ? 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)
[   26.207960][ T1965]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   26.207961][ T1965]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   26.207964][ T1965]  vprintk_emit (kernel/printk/printk.c:2479)
[   26.207967][ T1965]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   26.207969][ T1965]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   26.207971][ T1965]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   26.207975][ T1965]  _printk (kernel/printk/printk.c:2504)
[   26.207979][ T1965]  ? snapshot_read.cold (user.c:?)
[   26.207984][ T1965]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   26.207988][ T1965]  br_set_state (net/bridge/br_stp.c:57 (discriminator 2))
[   26.207992][ T1965]  br_init_port (net/bridge/br_stp_if.c:39)
[   26.207995][ T1965]  br_stp_enable_port (net/bridge/br_stp_if.c:93)
[   26.207997][ T1965]  br_device_event (net/bridge/br.c:120)
[   26.208000][ T1965]  ? packet_sendmsg_spkt (af_packet.c:?)
[   26.208001][ T1965]  ? nlmsg_notify (./include/net/netlink.h:1165 ./include/net/netlink.h:1184 net/netlink/af_netlink.c:2599)
[   26.208008][ T1965]  notifier_call_chain (kernel/notifier.c:85)
[   26.208013][ T1965]  __dev_notify_flags (net/core/dev.c:2313 net/core/dev.c:2327 net/core/dev.c:9853)
[   26.208018][ T1965]  ? netif_change_name (net/core/dev.c:1517)
[   26.208022][ T1965]  ? netif_set_allmulti (./include/net/netdev_lock.h:33)
[   26.208025][ T1965]  ? kernel_text_address (kernel/extable.c:125 kernel/extable.c:94)
[   26.208028][ T1965]  ? __kernel_text_address (kernel/extable.c:79)
[   26.208029][ T1965]  ? write_profile (profile.c:?)
[   26.208034][ T1965]  netif_change_flags (net/core/dev.c:9882)
[   26.208038][ T1965]  do_setlink.isra.0 (net/core/rtnetlink.c:3266 (discriminator 1))
[   26.208041][ T1965]  ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1))
[   26.208043][ T1965]  ? rtnl_link_get_size (net/core/rtnetlink.c:747)
[   26.208044][ T1965]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380)
[   26.208046][ T1965]  ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2))
[   26.208050][ T1965]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   26.208051][ T1965]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   26.208053][ T1965]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   26.208056][ T1965]  ? kasan_save_stack (mm/kasan/common.c:58)
[   26.208058][ T1965]  ? kasan_save_stack (mm/kasan/common.c:57)
[   26.208059][ T1965]  ? kasan_save_track (mm/kasan/common.c:78)
[   26.208060][ T1965]  ? __kasan_kmalloc (mm/kasan/common.c:398 mm/kasan/common.c:415)
[   26.208063][ T1965]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   26.208065][ T1965]  ? snd_ac97_proc_read_main (sound/pci/ac97/ac97_proc.c:320)
[   26.208067][ T1965]  ? ___sys_sendmsg (net/socket.c:2758)
[   26.208071][ T1965]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   26.208073][ T1965]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   26.208076][ T1965]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   26.208078][ T1965]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   26.208079][ T1965]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   26.208080][ T1965]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   26.208082][ T1965]  ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22))
[   26.208084][ T1965]  ? __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)
[   26.208087][ T1965]  ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1))
[   26.208089][ T1965]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   26.208092][ T1965]  ? ww_mutex_lock (kernel/locking/mutex.c:934)
[   26.208096][ T1965]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   26.208098][ T1965]  ? __rtnl_newlink (net/core/rtnetlink.c:4063)
[   26.208103][ T1965]  rtnl_newlink (net/core/rtnetlink.c:4215)
[   26.208108][ T1965]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   26.208110][ T1965]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   26.208115][ T1965]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   26.208117][ T1965]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   26.208119][ T1965]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   26.208121][ T1965]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   26.208124][ T1965]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   26.208126][ T1965]  rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   26.208130][ T1965]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   26.208131][ T1965]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   26.208135][ T1965]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   26.208137][ T1965]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   26.208141][ T1965]  netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   26.208142][ T1965]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   26.208145][ T1965]  ? netlink_ack (./include/linux/skbuff.h:2718)
[   26.208152][ T1965]  ? 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))
[   26.208154][ T1965]  ? 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))
[   26.208158][ T1965]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   26.208162][ T1965]  ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   26.208165][ T1965]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   26.208169][ T1965]  netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   26.208173][ T1965]  ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7))
[   26.208177][ T1965]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   26.208178][ T1965]  ? __import_iovec (lib/iov_iter.c:1358 lib/iov_iter.c:1373)
[   26.208183][ T1965]  __sock_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4))
[   26.208186][ T1965]  ____sys_sendmsg (net/socket.c:2713)
[   26.208188][ T1965]  ? copy_msghdr_from_user (net/socket.c:2650)
[   26.208191][ T1965]  ? sock_write_iter (net/socket.c:1269)
[   26.208192][ T1965]  ? move_addr_to_kernel (net/socket.c:258)
[   26.208200][ T1965]  ___sys_sendmsg (net/socket.c:2767)
[   26.208203][ T1965]  ? copy_msghdr_from_user (net/socket.c:2619)
[   26.208219][ T1965]  __sys_sendmsg (net/socket.c:2799)
[   26.208222][ T1965]  ? __sys_sendmsg_sock (net/socket.c:2780)
[   26.208228][ T1965]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   26.208231][ T1965]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   26.208234][ T1965]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   26.208237][ T1965]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   26.208239][ T1965] RIP: 0033:0x7f286af9754e
[   26.208241][ T1965] 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
[   26.208243][ T1965] RSP: 002b:00007ffc810c6fe0 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
[   26.208245][ T1965] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f286af9754e
[   26.208247][ T1965] RDX: 0000000000000000 RSI: 00007ffc810c7090 RDI: 0000000000000005
[   26.208247][ T1965] RBP: 00007ffc810c6ff0 R08: 0000000000000000 R09: 0000000000000000
[   26.208248][ T1965] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a9144c4
[   26.208249][ T1965] R13: 00000000004a1620 R14: 0000000000000000 R15: 00007ffc810c7750
| [   27.671242][   T69] softirqs last disabled at (197612): br_port_carrier_check (./include/linux/spinlock.h:353 net/bridge/br_if.c:87)
| [   27.671244][   T69] Preemption disabled at:
| [   27.671245][   T69] 0x0
| [   27.671255][   T69] Tainted: [W]=WARN
[   27.671256][   T69] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   27.671257][   T69] Workqueue: events_unbound linkwatch_event
[   27.671260][   T69] Call Trace:
[   27.671262][   T69]  <TASK>
[   27.671264][   T69]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   27.671270][   T69]  __might_resched.cold (kernel/sched/core.c:9234)
[   27.671275][   T69]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   27.671279][   T69]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   27.671283][   T69]  __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))
[   27.671285][   T69]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   27.671291][   T69]  ? 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)
[   27.671294][   T69]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   27.671298][   T69]  put_chars (drivers/char/virtio_console.c:1176)
[   27.671300][   T69]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   27.671303][   T69]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   27.671306][   T69]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   27.671309][   T69]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   27.671313][   T69]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   27.671317][   T69]  ? mark_usage (kernel/locking/lockdep.c:4690)
[   27.671319][   T69]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   27.671320][   T69]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   27.671325][   T69]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   27.671326][   T69]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   27.671331][   T69]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   27.671335][   T69]  console_emit_next_record (kernel/printk/printk.c:3183)
[   27.671339][   T69]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   27.671341][   T69]  ? 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))
[   27.671344][   T69]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   27.671346][   T69]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   27.671350][   T69]  console_flush_one_record (kernel/printk/printk.c:3268)
[   27.671354][   T69]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   27.671356][   T69]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   27.671361][   T69]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   27.671364][   T69]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   27.671366][   T69]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   27.671368][   T69]  ? 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)
[   27.671371][   T69]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   27.671373][   T69]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   27.671376][   T69]  vprintk_emit (kernel/printk/printk.c:2479)
[   27.671379][   T69]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   27.671381][   T69]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   27.671383][   T69]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   27.671387][   T69]  _printk (kernel/printk/printk.c:2504)
[   27.671390][   T69]  ? snapshot_read.cold (user.c:?)
[   27.671396][   T69]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   27.671399][   T69]  br_set_state (net/bridge/br_stp.c:57 (discriminator 2))
[   27.671404][   T69]  br_init_port (net/bridge/br_stp_if.c:39)
[   27.671406][   T69]  br_stp_enable_port (net/bridge/br_stp_if.c:93)
[   27.671408][   T69]  br_port_carrier_check (net/bridge/br_if.c:90)
[   27.671412][   T69]  br_device_event (net/bridge/br.c:101)
[   27.671415][   T69]  ? packet_sendmsg_spkt (af_packet.c:?)
[   27.671417][   T69]  ? nlmsg_notify (./include/net/netlink.h:1165 ./include/net/netlink.h:1184 net/netlink/af_netlink.c:2599)
[   27.671423][   T69]  notifier_call_chain (kernel/notifier.c:85)
[   27.671429][   T69]  netif_state_change (net/core/dev.c:1625)
[   27.671434][   T69]  ? call_netdevice_notifiers_info (./include/net/net_namespace.h:422 (discriminator 7))
[   27.671439][   T69]  ? linkwatch_do_dev (net/core/link_watch.c:182 net/core/link_watch.c:166)
[   27.671441][   T69]  __linkwatch_run_queue (net/core/link_watch.c:240)
[   27.671444][   T69]  ? linkwatch_do_dev (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   27.671446][   T69]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   27.671451][   T69]  linkwatch_event (net/core/link_watch.c:314 (discriminator 11))
[   27.671453][   T69]  ? __linkwatch_run_queue (net/core/link_watch.c:213)
[   27.671456][   T69]  process_one_work (kernel/workqueue.c:3387)
[   27.671463][   T69]  ? __queue_delayed_work (kernel/workqueue.c:2622)
[   27.671466][   T69]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   27.671473][   T69]  worker_thread (kernel/workqueue.c:3470 kernel/workqueue.c:3551)
[   27.671480][   T69]  ? rescuer_thread (./include/linux/list.h:419 (discriminator 3))
[   27.671482][   T69]  kthread (kernel/kthread.c:436)
[   27.671485][   T69]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[   27.671488][   T69]  ? kthread_affine_preferred (kernel/kthread.c:857)
[   27.671491][   T69]  ret_from_fork (arch/x86/kernel/process.c:158)
[   27.671495][   T69]  ? arch_exit_to_user_mode_prepare.isra.0 (arch/x86/entry/vdso/vma.c:80 (discriminator 1))
[   27.671498][   T69]  ? __switch_to (arch/x86/kernel/process_64.c:403 arch/x86/kernel/process_64.c:663)
[   27.671502][   T69]  ? kthread_affine_preferred (kernel/kthread.c:857)
[   27.671504][   T69]  ret_from_fork_asm (arch/x86/entry/entry_64.S:245)
| [   28.889948][  T203] softirqs last disabled at (318014): br_port_carrier_check (./include/linux/spinlock.h:353 net/bridge/br_if.c:87)
| [   28.889950][  T203] Preemption disabled at:
| [   28.889951][  T203] 0x0
| [   28.889961][  T203] Tainted: [W]=WARN
[   28.889962][  T203] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   28.889964][  T203] Workqueue: events_unbound linkwatch_event
[   28.889967][  T203] Call Trace:
[   28.889968][  T203]  <TASK>
[   28.889970][  T203]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   28.889976][  T203]  __might_resched.cold (kernel/sched/core.c:9234)
[   28.889981][  T203]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   28.889985][  T203]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   28.889989][  T203]  __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))
[   28.889991][  T203]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   28.889998][  T203]  ? 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)
[   28.890001][  T203]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   28.890004][  T203]  put_chars (drivers/char/virtio_console.c:1176)
[   28.890007][  T203]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   28.890009][  T203]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   28.890012][  T203]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   28.890015][  T203]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   28.890019][  T203]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   28.890023][  T203]  ? mark_usage (kernel/locking/lockdep.c:4690)
[   28.890025][  T203]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   28.890027][  T203]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   28.890031][  T203]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   28.890033][  T203]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   28.890037][  T203]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   28.890041][  T203]  console_emit_next_record (kernel/printk/printk.c:3183)
[   28.890045][  T203]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   28.890047][  T203]  ? 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))
[   28.890050][  T203]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   28.890052][  T203]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   28.890056][  T203]  console_flush_one_record (kernel/printk/printk.c:3268)
[   28.890061][  T203]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   28.890062][  T203]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   28.890068][  T203]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   28.890071][  T203]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   28.890072][  T203]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   28.890074][  T203]  ? 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)
[   28.890078][  T203]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   28.890080][  T203]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   28.890083][  T203]  vprintk_emit (kernel/printk/printk.c:2479)
[   28.890086][  T203]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   28.890088][  T203]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   28.890090][  T203]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   28.890093][  T203]  _printk (kernel/printk/printk.c:2504)
[   28.890097][  T203]  ? snapshot_read.cold (user.c:?)
[   28.890102][  T203]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   28.890106][  T203]  br_set_state (net/bridge/br_stp.c:57 (discriminator 2))
[   28.890110][  T203]  br_init_port (net/bridge/br_stp_if.c:39)
[   28.890113][  T203]  br_stp_enable_port (net/bridge/br_stp_if.c:93)
[   28.890115][  T203]  br_port_carrier_check (net/bridge/br_if.c:90)
[   28.890119][  T203]  br_device_event (net/bridge/br.c:101)
[   28.890122][  T203]  ? packet_sendmsg_spkt (af_packet.c:?)
[   28.890124][  T203]  ? nlmsg_notify (./include/net/netlink.h:1165 ./include/net/netlink.h:1184 net/netlink/af_netlink.c:2599)
[   28.890132][  T203]  notifier_call_chain (kernel/notifier.c:85)
[   28.890137][  T203]  netif_state_change (net/core/dev.c:1625)
[   28.890142][  T203]  ? call_netdevice_notifiers_info (./include/net/net_namespace.h:422 (discriminator 7))
[   28.890147][  T203]  ? linkwatch_do_dev (net/core/link_watch.c:182 net/core/link_watch.c:166)
[   28.890149][  T203]  __linkwatch_run_queue (net/core/link_watch.c:240)
[   28.890152][  T203]  ? linkwatch_do_dev (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   28.890154][  T203]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   28.890159][  T203]  linkwatch_event (net/core/link_watch.c:314 (discriminator 11))
[   28.890161][  T203]  ? __linkwatch_run_queue (net/core/link_watch.c:213)
[   28.890164][  T203]  process_one_work (kernel/workqueue.c:3387)
[   28.890171][  T203]  ? __queue_delayed_work (kernel/workqueue.c:2622)
[   28.890174][  T203]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   28.890181][  T203]  worker_thread (kernel/workqueue.c:3470 kernel/workqueue.c:3551)
[   28.890185][  T203]  ? rescuer_thread (./include/linux/list.h:419 (discriminator 3))
[   28.890187][  T203]  ? __kthread_parkme (./include/linux/instrumented.h:82 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 kernel/kthread.c:272)
[   28.890190][  T203]  ? rescuer_thread (./include/linux/list.h:419 (discriminator 3))
[   28.890193][  T203]  ? rescuer_thread (./include/linux/list.h:419 (discriminator 3))
[   28.890195][  T203]  kthread (kernel/kthread.c:436)
[   28.890197][  T203]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[   28.890201][  T203]  ? kthread_affine_preferred (kernel/kthread.c:857)
[   28.890203][  T203]  ret_from_fork (arch/x86/kernel/process.c:158)
[   28.890207][  T203]  ? arch_exit_to_user_mode_prepare.isra.0 (arch/x86/entry/vdso/vma.c:80 (discriminator 1))
[   28.890211][  T203]  ? __switch_to (arch/x86/kernel/process_64.c:403 arch/x86/kernel/process_64.c:663)
[   28.890214][  T203]  ? kthread_affine_preferred (kernel/kthread.c:857)
[   28.890217][  T203]  ret_from_fork_asm (arch/x86/entry/entry_64.S:245)
| [   30.196459][ T2357] softirqs last disabled at (18800): br_device_event (./include/linux/spinlock.h:353 net/bridge/br.c:119)
| [   30.196461][ T2357] Preemption disabled at:
| [   30.196462][ T2357] 0x0
| [   30.196472][ T2357] Tainted: [W]=WARN
[   30.196474][ T2357] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   30.196475][ T2357] Call Trace:
[   30.196477][ T2357]  <TASK>
[   30.196479][ T2357]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   30.196485][ T2357]  __might_resched.cold (kernel/sched/core.c:9234)
[   30.196490][ T2357]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   30.196494][ T2357]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   30.196498][ T2357]  __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))
[   30.196500][ T2357]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   30.196507][ T2357]  ? 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)
[   30.196510][ T2357]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   30.196513][ T2357]  put_chars (drivers/char/virtio_console.c:1176)
[   30.196516][ T2357]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   30.196519][ T2357]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   30.196523][ T2357]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   30.196528][ T2357]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   30.196536][ T2357]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   30.196539][ T2357]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   30.196541][ T2357]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   30.196545][ T2357]  console_emit_next_record (kernel/printk/printk.c:3183)
[   30.196549][ T2357]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   30.196551][ T2357]  ? 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))
[   30.196554][ T2357]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   30.196555][ T2357]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   30.196559][ T2357]  console_flush_one_record (kernel/printk/printk.c:3268)
[   30.196563][ T2357]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   30.196565][ T2357]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   30.196571][ T2357]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   30.196573][ T2357]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   30.196575][ T2357]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   30.196577][ T2357]  ? 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)
[   30.196581][ T2357]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   30.196582][ T2357]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   30.196585][ T2357]  vprintk_emit (kernel/printk/printk.c:2479)
[   30.196588][ T2357]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   30.196590][ T2357]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   30.196592][ T2357]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   30.196597][ T2357]  _printk (kernel/printk/printk.c:2504)
[   30.196601][ T2357]  ? snapshot_read.cold (user.c:?)
[   30.196606][ T2357]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   30.196609][ T2357]  br_set_state (net/bridge/br_stp.c:57 (discriminator 2))
[   30.196614][ T2357]  br_init_port (net/bridge/br_stp_if.c:39)
[   30.196616][ T2357]  br_stp_enable_port (net/bridge/br_stp_if.c:93)
[   30.196618][ T2357]  br_device_event (net/bridge/br.c:120)
[   30.196621][ T2357]  ? packet_sendmsg_spkt (af_packet.c:?)
[   30.196623][ T2357]  ? nlmsg_notify (./include/net/netlink.h:1165 ./include/net/netlink.h:1184 net/netlink/af_netlink.c:2599)
[   30.196630][ T2357]  notifier_call_chain (kernel/notifier.c:85)
[   30.196635][ T2357]  __dev_notify_flags (net/core/dev.c:2313 net/core/dev.c:2327 net/core/dev.c:9853)
[   30.196640][ T2357]  ? netif_change_name (net/core/dev.c:1517)
[   30.196648][ T2357]  ? netif_set_allmulti (./include/net/netdev_lock.h:33)
[   30.196651][ T2357]  ? kernel_text_address (kernel/extable.c:125 kernel/extable.c:94)
[   30.196654][ T2357]  ? __kernel_text_address (kernel/extable.c:79)
[   30.196655][ T2357]  ? write_profile (profile.c:?)
[   30.196660][ T2357]  netif_change_flags (net/core/dev.c:9882)
[   30.196664][ T2357]  do_setlink.isra.0 (net/core/rtnetlink.c:3266 (discriminator 1))
[   30.196667][ T2357]  ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1))
[   30.196669][ T2357]  ? rtnl_link_get_size (net/core/rtnetlink.c:747)
[   30.196671][ T2357]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380)
[   30.196673][ T2357]  ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2))
[   30.196676][ T2357]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   30.196678][ T2357]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   30.196680][ T2357]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   30.196682][ T2357]  ? kasan_save_stack (mm/kasan/common.c:58)
[   30.196685][ T2357]  ? kasan_save_stack (mm/kasan/common.c:57)
[   30.196686][ T2357]  ? kasan_save_track (mm/kasan/common.c:78)
[   30.196687][ T2357]  ? __kasan_kmalloc (mm/kasan/common.c:398 mm/kasan/common.c:415)
[   30.196689][ T2357]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   30.196691][ T2357]  ? snd_ac97_proc_read_main (sound/pci/ac97/ac97_proc.c:320)
[   30.196694][ T2357]  ? ___sys_sendmsg (net/socket.c:2758)
[   30.196698][ T2357]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   30.196700][ T2357]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   30.196703][ T2357]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   30.196704][ T2357]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   30.196706][ T2357]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   30.196707][ T2357]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   30.196709][ T2357]  ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22))
[   30.196711][ T2357]  ? __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)
[   30.196714][ T2357]  ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1))
[   30.196716][ T2357]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   30.196719][ T2357]  ? ww_mutex_lock (kernel/locking/mutex.c:934)
[   30.196722][ T2357]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   30.196725][ T2357]  ? __rtnl_newlink (net/core/rtnetlink.c:4063)
[   30.196730][ T2357]  rtnl_newlink (net/core/rtnetlink.c:4215)
[   30.196735][ T2357]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   30.196737][ T2357]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   30.196741][ T2357]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   30.196743][ T2357]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   30.196745][ T2357]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   30.196747][ T2357]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   30.196751][ T2357]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   30.196753][ T2357]  rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   30.196756][ T2357]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   30.196757][ T2357]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   30.196762][ T2357]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   30.196764][ T2357]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   30.196767][ T2357]  netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   30.196769][ T2357]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   30.196772][ T2357]  ? netlink_ack (./include/linux/skbuff.h:2718)
[   30.196778][ T2357]  ? 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))
[   30.196780][ T2357]  ? 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))
[   30.196785][ T2357]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   30.196789][ T2357]  ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   30.196791][ T2357]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   30.196795][ T2357]  netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   30.196799][ T2357]  ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7))
[   30.196803][ T2357]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   30.196805][ T2357]  ? __import_iovec (lib/iov_iter.c:1358 lib/iov_iter.c:1373)
[   30.196810][ T2357]  __sock_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4))
[   30.196813][ T2357]  ____sys_sendmsg (net/socket.c:2713)
[   30.196815][ T2357]  ? copy_msghdr_from_user (net/socket.c:2650)
[   30.196817][ T2357]  ? sock_write_iter (net/socket.c:1269)
[   30.196819][ T2357]  ? move_addr_to_kernel (net/socket.c:258)
[   30.196826][ T2357]  ___sys_sendmsg (net/socket.c:2767)
[   30.196829][ T2357]  ? copy_msghdr_from_user (net/socket.c:2619)
[   30.196845][ T2357]  __sys_sendmsg (net/socket.c:2799)
[   30.196847][ T2357]  ? __sys_sendmsg_sock (net/socket.c:2780)
[   30.196854][ T2357]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   30.196857][ T2357]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   30.196860][ T2357]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   30.196863][ T2357]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   30.196865][ T2357] RIP: 0033:0x7f128221c54e
[   30.196867][ T2357] 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
[   30.196869][ T2357] RSP: 002b:00007fffc28cdf50 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
[   30.196871][ T2357] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f128221c54e
[   30.196873][ T2357] RDX: 0000000000000000 RSI: 00007fffc28ce000 RDI: 0000000000000005
[   30.196874][ T2357] RBP: 00007fffc28cdf60 R08: 0000000000000000 R09: 0000000000000000
[   30.196874][ T2357] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a9144c8
[   30.196875][ T2357] R13: 00000000004a1620 R14: 0000000000000000 R15: 00007fffc28ce6c0
| [   31.766220][ T2491] softirqs last disabled at (24140): br_device_event (./include/linux/spinlock.h:353 net/bridge/br.c:109)
| [   31.766222][ T2491] Preemption disabled at:
| [   31.766223][ T2491] 0x0
| [   31.766232][ T2491] Tainted: [W]=WARN
[   31.766233][ T2491] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   31.766235][ T2491] Call Trace:
[   31.766237][ T2491]  <TASK>
[   31.766238][ T2491]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   31.766244][ T2491]  __might_resched.cold (kernel/sched/core.c:9234)
[   31.766248][ T2491]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   31.766253][ T2491]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   31.766257][ T2491]  __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))
[   31.766259][ T2491]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   31.766266][ T2491]  ? 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)
[   31.766268][ T2491]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   31.766272][ T2491]  put_chars (drivers/char/virtio_console.c:1176)
[   31.766274][ T2491]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   31.766281][ T2491]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   31.766288][ T2491]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   31.766291][ T2491]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   31.766296][ T2491]  console_emit_next_record (kernel/printk/printk.c:3183)
[   31.766300][ T2491]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   31.766302][ T2491]  ? 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))
[   31.766305][ T2491]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   31.766308][ T2491]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   31.766311][ T2491]  console_flush_one_record (kernel/printk/printk.c:3268)
[   31.766316][ T2491]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   31.766317][ T2491]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   31.766323][ T2491]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   31.766326][ T2491]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   31.766327][ T2491]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   31.766329][ T2491]  ? 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)
[   31.766333][ T2491]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   31.766335][ T2491]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   31.766337][ T2491]  vprintk_emit (kernel/printk/printk.c:2479)
[   31.766340][ T2491]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   31.766341][ T2491]  ? mark_held_locks (kernel/locking/lockdep.c:4341)
[   31.766346][ T2491]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   31.766348][ T2491]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   31.766353][ T2491]  _printk (kernel/printk/printk.c:2504)
[   31.766356][ T2491]  ? snapshot_read.cold (user.c:?)
[   31.766364][ T2491]  br_set_state (net/bridge/br_stp.c:57 (discriminator 2))
[   31.766368][ T2491]  br_stp_disable_port (net/bridge/br_stp_if.c:106)
[   31.766372][ T2491]  br_device_event (net/bridge/br.c:111)
[   31.766374][ T2491]  ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:211 (discriminator 1) kernel/locking/spinlock.c:221 (discriminator 1))
[   31.766378][ T2491]  ? packet_sendmsg_spkt (af_packet.c:?)
[   31.766383][ T2491]  notifier_call_chain (kernel/notifier.c:85)
[   31.766389][ T2491]  __dev_notify_flags (net/core/dev.c:2313 net/core/dev.c:2327 net/core/dev.c:9855)
[   31.766394][ T2491]  ? netif_change_name (net/core/dev.c:1517)
[   31.766398][ T2491]  ? netif_set_allmulti (./include/net/netdev_lock.h:33)
[   31.766401][ T2491]  ? __kernel_text_address (kernel/extable.c:79)
[   31.766403][ T2491]  ? write_profile (profile.c:?)
[   31.766408][ T2491]  netif_change_flags (net/core/dev.c:9882)
[   31.766412][ T2491]  do_setlink.isra.0 (net/core/rtnetlink.c:3266 (discriminator 1))
[   31.766415][ T2491]  ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1))
[   31.766418][ T2491]  ? rtnl_link_get_size (net/core/rtnetlink.c:747)
[   31.766419][ T2491]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380)
[   31.766421][ T2491]  ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2))
[   31.766424][ T2491]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   31.766426][ T2491]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   31.766428][ T2491]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   31.766430][ T2491]  ? kasan_save_stack (mm/kasan/common.c:58)
[   31.766432][ T2491]  ? kasan_save_stack (mm/kasan/common.c:57)
[   31.766434][ T2491]  ? kasan_save_track (mm/kasan/common.c:78)
[   31.766435][ T2491]  ? __kasan_kmalloc (mm/kasan/common.c:398 mm/kasan/common.c:415)
[   31.766437][ T2491]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   31.766439][ T2491]  ? snd_ac97_proc_read_main (sound/pci/ac97/ac97_proc.c:320)
[   31.766442][ T2491]  ? ___sys_sendmsg (net/socket.c:2758)
[   31.766446][ T2491]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   31.766448][ T2491]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   31.766450][ T2491]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   31.766452][ T2491]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   31.766453][ T2491]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   31.766455][ T2491]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   31.766456][ T2491]  ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22))
[   31.766459][ T2491]  ? __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)
[   31.766460][ T2491]  ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1))
[   31.766462][ T2491]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   31.766465][ T2491]  ? ww_mutex_lock (kernel/locking/mutex.c:934)
[   31.766469][ T2491]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   31.766471][ T2491]  ? __rtnl_newlink (net/core/rtnetlink.c:4063)
[   31.766476][ T2491]  rtnl_newlink (net/core/rtnetlink.c:4215)
[   31.766481][ T2491]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   31.766483][ T2491]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   31.766488][ T2491]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   31.766489][ T2491]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   31.766492][ T2491]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   31.766494][ T2491]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   31.766497][ T2491]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   31.766499][ T2491]  rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   31.766502][ T2491]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   31.766504][ T2491]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   31.766508][ T2491]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   31.766510][ T2491]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   31.766514][ T2491]  netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   31.766516][ T2491]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   31.766519][ T2491]  ? netlink_ack (./include/linux/skbuff.h:2718)
[   31.766526][ T2491]  ? 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))
[   31.766528][ T2491]  ? 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))
[   31.766532][ T2491]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   31.766536][ T2491]  ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   31.766539][ T2491]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   31.766543][ T2491]  netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   31.766547][ T2491]  ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7))
[   31.766551][ T2491]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   31.766552][ T2491]  ? __import_iovec (lib/iov_iter.c:1358 lib/iov_iter.c:1373)
[   31.766557][ T2491]  __sock_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4))
[   31.766560][ T2491]  ____sys_sendmsg (net/socket.c:2713)
[   31.766562][ T2491]  ? copy_msghdr_from_user (net/socket.c:2650)
[   31.766565][ T2491]  ? sock_write_iter (net/socket.c:1269)
[   31.766566][ T2491]  ? move_addr_to_kernel (net/socket.c:258)
[   31.766573][ T2491]  ___sys_sendmsg (net/socket.c:2767)
[   31.766576][ T2491]  ? copy_msghdr_from_user (net/socket.c:2619)
[   31.766592][ T2491]  __sys_sendmsg (net/socket.c:2799)
[   31.766595][ T2491]  ? __sys_sendmsg_sock (net/socket.c:2780)
[   31.766601][ T2491]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   31.766604][ T2491]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   31.766607][ T2491]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   31.766610][ T2491]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   31.766612][ T2491] RIP: 0033:0x7f068552d54e
[   31.766614][ T2491] 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
[   31.766616][ T2491] RSP: 002b:00007ffca97c47f0 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
[   31.766618][ T2491] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f068552d54e
[   31.766620][ T2491] RDX: 0000000000000000 RSI: 00007ffca97c48a0 RDI: 0000000000000005
[   31.766621][ T2491] RBP: 00007ffca97c4800 R08: 0000000000000000 R09: 0000000000000000
[   31.766621][ T2491] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a9144ca
[   31.766622][ T2491] R13: 00000000004a1620 R14: 0000000000000000 R15: 00007ffca97c4f60
| [   32.926995][ T1073] softirqs last disabled at (141484): br_port_carrier_check (./include/linux/spinlock.h:353 net/bridge/br_if.c:87)
| [   32.926998][ T1073] Preemption disabled at:
| [   32.926998][ T1073] 0x0
| [   32.927008][ T1073] Tainted: [W]=WARN
[   32.927009][ T1073] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   32.927011][ T1073] Workqueue: events_unbound linkwatch_event
[   32.927014][ T1073] Call Trace:
[   32.927016][ T1073]  <TASK>
[   32.927017][ T1073]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   32.927023][ T1073]  __might_resched.cold (kernel/sched/core.c:9234)
[   32.927028][ T1073]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   32.927032][ T1073]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   32.927037][ T1073]  __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))
[   32.927039][ T1073]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   32.927045][ T1073]  ? 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)
[   32.927048][ T1073]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   32.927052][ T1073]  put_chars (drivers/char/virtio_console.c:1176)
[   32.927054][ T1073]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   32.927057][ T1073]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   32.927060][ T1073]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   32.927063][ T1073]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   32.927067][ T1073]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   32.927071][ T1073]  ? mark_usage (kernel/locking/lockdep.c:4690)
[   32.927072][ T1073]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   32.927074][ T1073]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   32.927078][ T1073]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   32.927080][ T1073]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   32.927085][ T1073]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   32.927089][ T1073]  console_emit_next_record (kernel/printk/printk.c:3183)
[   32.927093][ T1073]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   32.927095][ T1073]  ? 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))
[   32.927098][ T1073]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   32.927100][ T1073]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   32.927104][ T1073]  console_flush_one_record (kernel/printk/printk.c:3268)
[   32.927108][ T1073]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   32.927110][ T1073]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   32.927116][ T1073]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   32.927118][ T1073]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   32.927120][ T1073]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   32.927122][ T1073]  ? 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)
[   32.927126][ T1073]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   32.927127][ T1073]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   32.927130][ T1073]  vprintk_emit (kernel/printk/printk.c:2479)
[   32.927133][ T1073]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   32.927135][ T1073]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   32.927137][ T1073]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   32.927141][ T1073]  _printk (kernel/printk/printk.c:2504)
[   32.927144][ T1073]  ? snapshot_read.cold (user.c:?)
[   32.927150][ T1073]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   32.927153][ T1073]  br_set_state (net/bridge/br_stp.c:57 (discriminator 2))
[   32.927158][ T1073]  br_init_port (net/bridge/br_stp_if.c:39)
[   32.927160][ T1073]  br_stp_enable_port (net/bridge/br_stp_if.c:93)
[   32.927162][ T1073]  br_port_carrier_check (net/bridge/br_if.c:90)
[   32.927166][ T1073]  br_device_event (net/bridge/br.c:101)
[   32.927169][ T1073]  ? packet_sendmsg_spkt (af_packet.c:?)
[   32.927171][ T1073]  ? nlmsg_notify (./include/net/netlink.h:1165 ./include/net/netlink.h:1184 net/netlink/af_netlink.c:2599)
[   32.927178][ T1073]  notifier_call_chain (kernel/notifier.c:85)
[   32.927184][ T1073]  netif_state_change (net/core/dev.c:1625)
[   32.927189][ T1073]  ? call_netdevice_notifiers_info (./include/net/net_namespace.h:422 (discriminator 7))
[   32.927193][ T1073]  ? linkwatch_do_dev (net/core/link_watch.c:182 net/core/link_watch.c:166)
[   32.927195][ T1073]  __linkwatch_run_queue (net/core/link_watch.c:240)
[   32.927198][ T1073]  ? linkwatch_do_dev (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   32.927201][ T1073]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   32.927206][ T1073]  linkwatch_event (net/core/link_watch.c:314 (discriminator 11))
[   32.927208][ T1073]  ? __linkwatch_run_queue (net/core/link_watch.c:213)
[   32.927211][ T1073]  process_one_work (kernel/workqueue.c:3387)
[   32.927218][ T1073]  ? __queue_delayed_work (kernel/workqueue.c:2622)
[   32.927221][ T1073]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   32.927228][ T1073]  worker_thread (kernel/workqueue.c:3470 kernel/workqueue.c:3551)
[   32.927233][ T1073]  ? rescuer_thread (./include/linux/list.h:419 (discriminator 3))
[   32.927235][ T1073]  ? __kthread_parkme (./include/linux/instrumented.h:82 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 kernel/kthread.c:272)
[   32.927237][ T1073]  ? rescuer_thread (./include/linux/list.h:419 (discriminator 3))
[   32.927240][ T1073]  ? rescuer_thread (./include/linux/list.h:419 (discriminator 3))
[   32.927242][ T1073]  kthread (kernel/kthread.c:436)
[   32.927244][ T1073]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[   32.927248][ T1073]  ? kthread_affine_preferred (kernel/kthread.c:857)
[   32.927250][ T1073]  ret_from_fork (arch/x86/kernel/process.c:158)
[   32.927255][ T1073]  ? arch_exit_to_user_mode_prepare.isra.0 (arch/x86/entry/vdso/vma.c:80 (discriminator 1))
[   32.927258][ T1073]  ? __switch_to (arch/x86/kernel/process_64.c:403 arch/x86/kernel/process_64.c:663)
[   32.927261][ T1073]  ? kthread_affine_preferred (kernel/kthread.c:857)
[   32.927264][ T1073]  ret_from_fork_asm (arch/x86/entry/entry_64.S:245)
| [   34.412910][ T2745] softirqs last disabled at (16210): br_device_event (./include/linux/spinlock.h:353 net/bridge/br.c:119)
| [   34.412912][ T2745] Preemption disabled at:
| [   34.412913][ T2745] 0x0
| [   34.412923][ T2745] Tainted: [W]=WARN
[   34.412923][ T2745] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   34.412925][ T2745] Call Trace:
[   34.412927][ T2745]  <TASK>
[   34.412928][ T2745]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   34.412934][ T2745]  __might_resched.cold (kernel/sched/core.c:9234)
[   34.412939][ T2745]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   34.412943][ T2745]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   34.412947][ T2745]  __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))
[   34.412949][ T2745]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   34.412956][ T2745]  ? 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)
[   34.412958][ T2745]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   34.412962][ T2745]  put_chars (drivers/char/virtio_console.c:1176)
[   34.412964][ T2745]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   34.412965][ T2745]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   34.412969][ T2745]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   34.412975][ T2745]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   34.412982][ T2745]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   34.412985][ T2745]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   34.412987][ T2745]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   34.412991][ T2745]  console_emit_next_record (kernel/printk/printk.c:3183)
[   34.412995][ T2745]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   34.412997][ T2745]  ? 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))
[   34.413000][ T2745]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   34.413001][ T2745]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   34.413005][ T2745]  console_flush_one_record (kernel/printk/printk.c:3268)
[   34.413009][ T2745]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   34.413011][ T2745]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   34.413016][ T2745]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   34.413019][ T2745]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   34.413021][ T2745]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   34.413023][ T2745]  ? 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)
[   34.413026][ T2745]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   34.413028][ T2745]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   34.413031][ T2745]  vprintk_emit (kernel/printk/printk.c:2479)
[   34.413034][ T2745]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   34.413036][ T2745]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   34.413038][ T2745]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   34.413042][ T2745]  _printk (kernel/printk/printk.c:2504)
[   34.413046][ T2745]  ? snapshot_read.cold (user.c:?)
[   34.413051][ T2745]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   34.413054][ T2745]  br_set_state (net/bridge/br_stp.c:57 (discriminator 2))
[   34.413059][ T2745]  br_init_port (net/bridge/br_stp_if.c:39)
[   34.413061][ T2745]  br_stp_enable_port (net/bridge/br_stp_if.c:93)
[   34.413063][ T2745]  br_device_event (net/bridge/br.c:120)
[   34.413066][ T2745]  ? packet_sendmsg_spkt (af_packet.c:?)
[   34.413068][ T2745]  ? nlmsg_notify (./include/net/netlink.h:1165 ./include/net/netlink.h:1184 net/netlink/af_netlink.c:2599)
[   34.413074][ T2745]  notifier_call_chain (kernel/notifier.c:85)
[   34.413080][ T2745]  __dev_notify_flags (net/core/dev.c:2313 net/core/dev.c:2327 net/core/dev.c:9853)
[   34.413085][ T2745]  ? netif_change_name (net/core/dev.c:1517)
[   34.413089][ T2745]  ? netif_set_allmulti (./include/net/netdev_lock.h:33)
[   34.413091][ T2745]  ? kernel_text_address (kernel/extable.c:125 kernel/extable.c:94)
[   34.413094][ T2745]  ? __kernel_text_address (kernel/extable.c:79)
[   34.413095][ T2745]  ? write_profile (profile.c:?)
[   34.413100][ T2745]  netif_change_flags (net/core/dev.c:9882)
[   34.413104][ T2745]  do_setlink.isra.0 (net/core/rtnetlink.c:3266 (discriminator 1))
[   34.413107][ T2745]  ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1))
[   34.413109][ T2745]  ? rtnl_link_get_size (net/core/rtnetlink.c:747)
[   34.413111][ T2745]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380)
[   34.413112][ T2745]  ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2))
[   34.413116][ T2745]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   34.413117][ T2745]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   34.413119][ T2745]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   34.413122][ T2745]  ? kasan_save_stack (mm/kasan/common.c:58)
[   34.413124][ T2745]  ? kasan_save_stack (mm/kasan/common.c:57)
[   34.413125][ T2745]  ? kasan_save_track (mm/kasan/common.c:78)
[   34.413126][ T2745]  ? __kasan_kmalloc (mm/kasan/common.c:398 mm/kasan/common.c:415)
[   34.413129][ T2745]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   34.413130][ T2745]  ? snd_ac97_proc_read_main (sound/pci/ac97/ac97_proc.c:320)
[   34.413133][ T2745]  ? ___sys_sendmsg (net/socket.c:2758)
[   34.413137][ T2745]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   34.413139][ T2745]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   34.413141][ T2745]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   34.413143][ T2745]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   34.413145][ T2745]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   34.413146][ T2745]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   34.413147][ T2745]  ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22))
[   34.413150][ T2745]  ? __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)
[   34.413152][ T2745]  ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1))
[   34.413154][ T2745]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   34.413157][ T2745]  ? ww_mutex_lock (kernel/locking/mutex.c:934)
[   34.413161][ T2745]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   34.413163][ T2745]  ? __rtnl_newlink (net/core/rtnetlink.c:4063)
[   34.413168][ T2745]  rtnl_newlink (net/core/rtnetlink.c:4215)
[   34.413173][ T2745]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   34.413175][ T2745]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   34.413180][ T2745]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   34.413181][ T2745]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   34.413183][ T2745]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   34.413185][ T2745]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   34.413189][ T2745]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   34.413191][ T2745]  rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   34.413194][ T2745]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   34.413195][ T2745]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   34.413200][ T2745]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   34.413202][ T2745]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   34.413205][ T2745]  netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   34.413207][ T2745]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   34.413210][ T2745]  ? netlink_ack (./include/linux/skbuff.h:2718)
[   34.413216][ T2745]  ? 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))
[   34.413218][ T2745]  ? 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))
[   34.413222][ T2745]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   34.413226][ T2745]  ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   34.413229][ T2745]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   34.413233][ T2745]  netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   34.413237][ T2745]  ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7))
[   34.413240][ T2745]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   34.413242][ T2745]  ? __import_iovec (lib/iov_iter.c:1358 lib/iov_iter.c:1373)
[   34.413247][ T2745]  __sock_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4))
[   34.413250][ T2745]  ____sys_sendmsg (net/socket.c:2713)
[   34.413252][ T2745]  ? copy_msghdr_from_user (net/socket.c:2650)
[   34.413255][ T2745]  ? sock_write_iter (net/socket.c:1269)
[   34.413256][ T2745]  ? move_addr_to_kernel (net/socket.c:258)
[   34.413263][ T2745]  ___sys_sendmsg (net/socket.c:2767)
[   34.413266][ T2745]  ? copy_msghdr_from_user (net/socket.c:2619)
[   34.413282][ T2745]  __sys_sendmsg (net/socket.c:2799)
[   34.413284][ T2745]  ? __sys_sendmsg_sock (net/socket.c:2780)
[   34.413291][ T2745]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   34.413294][ T2745]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   34.413297][ T2745]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   34.413300][ T2745]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   34.413302][ T2745] RIP: 0033:0x7f531e9da54e
[   34.413304][ T2745] 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
[   34.413306][ T2745] RSP: 002b:00007ffdf9975e50 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
[   34.413308][ T2745] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f531e9da54e
[   34.413310][ T2745] RDX: 0000000000000000 RSI: 00007ffdf9975f00 RDI: 0000000000000005
[   34.413311][ T2745] RBP: 00007ffdf9975e60 R08: 0000000000000000 R09: 0000000000000000
[   34.413311][ T2745] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a9144cc
[   34.413312][ T2745] R13: 00000000004a1620 R14: 0000000000000000 R15: 00007ffdf99765c0
| [   35.421695][ T2810] softirqs last disabled at (23470): __alloc_skb (./include/linux/bottom_half.h:20 (discriminator 2) net/core/skbuff.c:697 (discriminator 2))
| [   35.421697][ T2810] Preemption disabled at:
| [   35.421698][ T2810] vprintk_emit (kernel/printk/printk.c:2471)
| [   35.421706][ T2810] Tainted: [W]=WARN
[   35.421707][ T2810] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   35.421709][ T2810] Call Trace:
[   35.421710][ T2810]  <TASK>
[   35.421712][ T2810]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   35.421717][ T2810]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   35.421719][ T2810]  __might_resched.cold (kernel/sched/core.c:9234)
[   35.421723][ T2810]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   35.421728][ T2810]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   35.421732][ T2810]  __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))
[   35.421734][ T2810]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   35.421741][ T2810]  ? 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)
[   35.421744][ T2810]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   35.421747][ T2810]  put_chars (drivers/char/virtio_console.c:1176)
[   35.421749][ T2810]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   35.421752][ T2810]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   35.421758][ T2810]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   35.421766][ T2810]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   35.421769][ T2810]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   35.421771][ T2810]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   35.421775][ T2810]  console_emit_next_record (kernel/printk/printk.c:3183)
[   35.421779][ T2810]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   35.421781][ T2810]  ? 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))
[   35.421784][ T2810]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   35.421786][ T2810]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   35.421790][ T2810]  console_flush_one_record (kernel/printk/printk.c:3268)
[   35.421794][ T2810]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   35.421796][ T2810]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   35.421801][ T2810]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   35.421804][ T2810]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   35.421806][ T2810]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   35.421807][ T2810]  ? 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)
[   35.421811][ T2810]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   35.421813][ T2810]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   35.421816][ T2810]  vprintk_emit (kernel/printk/printk.c:2479)
[   35.421819][ T2810]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   35.421820][ T2810]  ? rtnl_newlink (net/core/rtnetlink.c:4215)
[   35.421822][ T2810]  ? netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   35.421824][ T2810]  ? netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   35.421826][ T2810]  ? netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   35.421828][ T2810]  ? __sock_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4))
[   35.421830][ T2810]  ? ____sys_sendmsg (net/socket.c:2713)
[   35.421831][ T2810]  ? ___sys_sendmsg (net/socket.c:2767)
[   35.421835][ T2810]  _printk (kernel/printk/printk.c:2504)
[   35.421838][ T2810]  ? snapshot_read.cold (user.c:?)
[   35.421843][ T2810]  ? netdev_name (./include/linux/netdevice.h:5709 (discriminator 1))
[   35.421847][ T2810]  ? __netdev_printk (net/core/dev.c:13148 (discriminator 2))
[   35.421850][ T2810]  netdev_info (net/core/dev.c:13195 (discriminator 3))
[   35.421853][ T2810]  ? netdev_notice (net/core/dev.c:13194)
[   35.421857][ T2810]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   35.421859][ T2810]  ? __up_read (kernel/locking/rwsem.c:1397 (discriminator 1))
[   35.421862][ T2810]  ? down_write_nested (kernel/locking/rwsem.c:1759)
[   35.421863][ T2810]  ? 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)
[   35.421866][ T2810]  netif_set_allmulti.cold (net/core/dev.c:9731 (discriminator 3))
[   35.421870][ T2810]  dev_set_allmulti (net/core/dev_api.c:315)
[   35.421873][ T2810]  del_nbp (net/bridge/br_if.c:253 net/bridge/br_if.c:341)
[   35.421880][ T2810]  br_del_if (net/bridge/br_if.c:732)
[   35.421882][ T2810]  ? rtnl_is_locked (net/core/rtnetlink.c:169)
[   35.421885][ T2810]  do_set_master (net/core/rtnetlink.c:3055)
[   35.421888][ T2810]  do_setlink.isra.0 (net/core/rtnetlink.c:3273 (discriminator 1))
[   35.421892][ T2810]  ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1))
[   35.421895][ T2810]  ? rtnl_link_get_size (net/core/rtnetlink.c:747)
[   35.421896][ T2810]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380)
[   35.421899][ T2810]  ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2))
[   35.421902][ T2810]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   35.421904][ T2810]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   35.421906][ T2810]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   35.421908][ T2810]  ? kasan_save_stack (mm/kasan/common.c:58)
[   35.421911][ T2810]  ? kasan_save_stack (mm/kasan/common.c:57)
[   35.421912][ T2810]  ? kasan_save_track (mm/kasan/common.c:78)
[   35.421913][ T2810]  ? __kasan_kmalloc (mm/kasan/common.c:398 mm/kasan/common.c:415)
[   35.421915][ T2810]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   35.421917][ T2810]  ? snd_ac97_proc_read_main (sound/pci/ac97/ac97_proc.c:320)
[   35.421919][ T2810]  ? ___sys_sendmsg (net/socket.c:2758)
[   35.421923][ T2810]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   35.421925][ T2810]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   35.421927][ T2810]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   35.421929][ T2810]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   35.421930][ T2810]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   35.421931][ T2810]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   35.421933][ T2810]  ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22))
[   35.421935][ T2810]  ? __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)
[   35.421938][ T2810]  ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1))
[   35.421940][ T2810]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   35.421943][ T2810]  ? ww_mutex_lock (kernel/locking/mutex.c:934)
[   35.421944][ T2810]  ? nla_get_range_signed (lib/nlattr.c:270)
[   35.421949][ T2810]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   35.421951][ T2810]  ? __rtnl_newlink (net/core/rtnetlink.c:4063)
[   35.421956][ T2810]  rtnl_newlink (net/core/rtnetlink.c:4215)
[   35.421962][ T2810]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   35.421963][ T2810]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   35.421968][ T2810]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   35.421970][ T2810]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   35.421972][ T2810]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   35.421974][ T2810]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   35.421978][ T2810]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   35.421980][ T2810]  rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   35.421983][ T2810]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   35.421984][ T2810]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   35.421989][ T2810]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   35.421990][ T2810]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   35.421994][ T2810]  netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   35.421996][ T2810]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   35.421999][ T2810]  ? netlink_ack (./include/linux/skbuff.h:2718)
[   35.422005][ T2810]  ? 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))
[   35.422007][ T2810]  ? 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))
[   35.422012][ T2810]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   35.422016][ T2810]  ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   35.422018][ T2810]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   35.422022][ T2810]  netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   35.422026][ T2810]  ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7))
[   35.422030][ T2810]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   35.422032][ T2810]  ? __import_iovec (lib/iov_iter.c:1358 lib/iov_iter.c:1373)
[   35.422037][ T2810]  __sock_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4))
[   35.422040][ T2810]  ____sys_sendmsg (net/socket.c:2713)
[   35.422042][ T2810]  ? copy_msghdr_from_user (net/socket.c:2650)
[   35.422044][ T2810]  ? sock_write_iter (net/socket.c:1269)
[   35.422046][ T2810]  ? move_addr_to_kernel (net/socket.c:258)
[   35.422053][ T2810]  ___sys_sendmsg (net/socket.c:2767)
[   35.422056][ T2810]  ? copy_msghdr_from_user (net/socket.c:2619)
[   35.422073][ T2810]  __sys_sendmsg (net/socket.c:2799)
[   35.422075][ T2810]  ? __sys_sendmsg_sock (net/socket.c:2780)
[   35.422082][ T2810]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   35.422085][ T2810]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   35.422088][ T2810]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   35.422091][ T2810]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   35.422093][ T2810] RIP: 0033:0x7f8c188a654e
[   35.422097][ T2810] 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
[   35.422098][ T2810] RSP: 002b:00007ffc2a112940 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
[   35.422101][ T2810] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f8c188a654e
[   35.422102][ T2810] RDX: 0000000000000000 RSI: 00007ffc2a1129f0 RDI: 0000000000000005
[   35.422103][ T2810] RBP: 00007ffc2a112950 R08: 0000000000000000 R09: 0000000000000000
[   35.422104][ T2810] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a9144cd


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