======================================
| [    9.497069][  T226] softirqs last disabled at (12773): __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767)
| [    9.497071][  T226] Preemption disabled at:
| [    9.497072][  T226] vprintk_emit (kernel/printk/printk.c:2471)
| [    9.497081][  T226] Tainted: [W]=WARN
[    9.497081][  T226] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[    9.497083][  T226] Call Trace:
[    9.497085][  T226]  <TASK>
[    9.497086][  T226]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[    9.497092][  T226]  ? vprintk_emit (kernel/printk/printk.c:2471)
[    9.497093][  T226]  __might_resched.cold (kernel/sched/core.c:9234)
[    9.497098][  T226]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[    9.497101][  T226]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[    9.497106][  T226]  __kmalloc_noprof (./include/linux/sched/mm.h:322 (discriminator 2) mm/slub.c:4636 (discriminator 2) mm/slub.c:4974 (discriminator 2) mm/slub.c:5413 (discriminator 2) mm/slub.c:5439 (discriminator 2))
[    9.497108][  T226]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[    9.497114][  T226]  ? do_raw_spin_unlock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:32 ./include/asm-generic/qspinlock.h:58 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141)
[    9.497117][  T226]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[    9.497120][  T226]  put_chars (drivers/char/virtio_console.c:1176)
[    9.497123][  T226]  ? __send_to_port (drivers/char/virtio_console.c:654)
[    9.497125][  T226]  ? validate_chain (kernel/locking/lockdep.c:159 kernel/locking/lockdep.c:191 kernel/locking/lockdep.c:3928)
[    9.497130][  T226]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[    9.497138][  T226]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[    9.497140][  T226]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[    9.497143][  T226]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[    9.497147][  T226]  console_emit_next_record (kernel/printk/printk.c:3183)
[    9.497151][  T226]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[    9.497152][  T226]  ? console_flush_one_record (./include/linux/rcupdate.h:314 (discriminator 2) ./include/linux/srcu.h:439 (discriminator 2) kernel/printk/printk.c:291 (discriminator 2) kernel/printk/printk.c:3246 (discriminator 2))
[    9.497156][  T226]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[    9.497157][  T226]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[    9.497161][  T226]  console_flush_one_record (kernel/printk/printk.c:3268)
[    9.497165][  T226]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[    9.497167][  T226]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[    9.497172][  T226]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[    9.497175][  T226]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[    9.497177][  T226]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[    9.497178][  T226]  ? lock_acquire (./include/linux/srcutree.h:374 ./include/linux/srcu.h:541 ./include/linux/srcu.h:645 ./include/trace/events/lock.h:23 ./include/trace/events/lock.h:23 kernel/locking/lockdep.c:5871)
[    9.497182][  T226]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[    9.497184][  T226]  ? vprintk_emit (kernel/printk/printk.c:2478)
[    9.497186][  T226]  vprintk_emit (kernel/printk/printk.c:2479)
[    9.497189][  T226]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[    9.497191][  T226]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[    9.497192][  T226]  ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:211 (discriminator 1) kernel/locking/spinlock.c:221 (discriminator 1))
[    9.497196][  T226]  ? mark_held_locks (kernel/locking/lockdep.c:4341)
[    9.497200][  T226]  _printk (kernel/printk/printk.c:2504)
[    9.497203][  T226]  ? snapshot_read.cold (user.c:?)
[    9.497207][  T226]  ? br_multicast_flood (??:?)
[    9.497210][  T226]  ? do_setlink.isra.0 (net/core/rtnetlink.c:3273 (discriminator 1))
[    9.497211][  T226]  ? rtnl_newlink (net/core/rtnetlink.c:4215)
[    9.497212][  T226]  ? rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[    9.497216][  T226]  br_set_state (net/bridge/br_stp.c:57 (discriminator 2))
[    9.497220][  T226]  br_init_port (net/bridge/br_stp_if.c:39)
[    9.497223][  T226]  new_nbp (net/bridge/br_if.c:449)
[    9.497226][  T226]  br_add_if (net/bridge/br_if.c:592)
[    9.497229][  T226]  ? is_bpf_text_address (./include/linux/rcupdate.h:882 kernel/bpf/core.c:751)
[    9.497232][  T226]  ? kernel_text_address (kernel/extable.c:125 kernel/extable.c:94)
[    9.497238][  T226]  do_set_master (net/core/rtnetlink.c:3071)
[    9.497244][  T226]  do_setlink.isra.0 (net/core/rtnetlink.c:3273 (discriminator 1))
[    9.497247][  T226]  ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1))
[    9.497250][  T226]  ? rtnl_link_get_size (net/core/rtnetlink.c:747)
[    9.497252][  T226]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380)
[    9.497254][  T226]  ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2))
[    9.497258][  T226]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[    9.497260][  T226]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[    9.497262][  T226]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[    9.497264][  T226]  ? kasan_save_stack (mm/kasan/common.c:58)
[    9.497266][  T226]  ? kasan_save_stack (mm/kasan/common.c:57)
[    9.497268][  T226]  ? kasan_save_track (mm/kasan/common.c:78)
[    9.497269][  T226]  ? __kasan_kmalloc (mm/kasan/common.c:398 mm/kasan/common.c:415)
[    9.497271][  T226]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[    9.497273][  T226]  ? snd_ac97_proc_read_main (sound/pci/ac97/ac97_proc.c:320)
[    9.497276][  T226]  ? ___sys_sendmsg (net/socket.c:2758)
[    9.497279][  T226]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[    9.497281][  T226]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[    9.497284][  T226]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[    9.497285][  T226]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[    9.497287][  T226]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[    9.497288][  T226]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[    9.497290][  T226]  ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22))
[    9.497292][  T226]  ? __mutex_lock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:3188 kernel/locking/mutex.c:89 kernel/locking/mutex.c:134 kernel/locking/mutex.c:649 kernel/locking/mutex.c:821)
[    9.497293][  T226]  ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1))
[    9.497295][  T226]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[    9.497298][  T226]  ? ww_mutex_lock (kernel/locking/mutex.c:934)
[    9.497300][  T226]  ? nla_get_range_signed (lib/nlattr.c:270)
[    9.497304][  T226]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[    9.497306][  T226]  ? __rtnl_newlink (net/core/rtnetlink.c:4063)
[    9.497312][  T226]  rtnl_newlink (net/core/rtnetlink.c:4215)
[    9.497317][  T226]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[    9.497319][  T226]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[    9.497323][  T226]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[    9.497325][  T226]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[    9.497327][  T226]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[    9.497329][  T226]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[    9.497332][  T226]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[    9.497334][  T226]  rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[    9.497337][  T226]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[    9.497339][  T226]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[    9.497343][  T226]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[    9.497345][  T226]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[    9.497348][  T226]  netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[    9.497351][  T226]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[    9.497354][  T226]  ? netlink_ack (./include/linux/skbuff.h:2718)
[    9.497360][  T226]  ? netlink_deliver_tap (./include/linux/rcupdate.h:319 (discriminator 2) ./include/linux/rcupdate.h:880 (discriminator 2) ./include/net/netns/generic.h:48 (discriminator 2) net/netlink/af_netlink.c:334 (discriminator 2))
[    9.497362][  T226]  ? netlink_deliver_tap (./include/linux/rcupdate.h:319 (discriminator 2) ./include/linux/rcupdate.h:880 (discriminator 2) net/netlink/af_netlink.c:341 (discriminator 2))
[    9.497367][  T226]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[    9.497371][  T226]  ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[    9.497373][  T226]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[    9.497377][  T226]  netlink_sendmsg (net/netlink/af_netlink.c:1900)
[    9.497381][  T226]  ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7))
[    9.497385][  T226]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[    9.497386][  T226]  ? __import_iovec (lib/iov_iter.c:1358 lib/iov_iter.c:1373)
[    9.497392][  T226]  __sock_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4))
[    9.497394][  T226]  ____sys_sendmsg (net/socket.c:2713)
[    9.497397][  T226]  ? copy_msghdr_from_user (net/socket.c:2650)
[    9.497399][  T226]  ? sock_write_iter (net/socket.c:1269)
[    9.497401][  T226]  ? move_addr_to_kernel (net/socket.c:258)
[    9.497408][  T226]  ___sys_sendmsg (net/socket.c:2767)
[    9.497410][  T226]  ? copy_msghdr_from_user (net/socket.c:2619)
[    9.497430][  T226]  __sys_sendmsg (net/socket.c:2799)
[    9.497433][  T226]  ? __sys_sendmsg_sock (net/socket.c:2780)
[    9.497439][  T226]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[    9.497442][  T226]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[    9.497445][  T226]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[    9.497448][  T226]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[    9.497450][  T226] RIP: 0033:0x7f82072d654e
[    9.497454][  T226] Code: 4d 89 d8 e8 b4 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 03 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 b4 bd 00 00       	call   0xbdbc
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 03 ff ff ff       	call   0xffffffffffffff3c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 03 ff ff ff       	call   0xffffffffffffff12
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[    9.497456][  T226] RSP: 002b:00007ffc83175790 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
[    9.497458][  T226] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007f82072d654e
[    9.497459][  T226] RDX: 0000000000000000 RSI: 00007ffc83175840 RDI: 0000000000000005
[    9.497460][  T226] RBP: 00007ffc831757a0 R08: 0000000000000000 R09: 0000000000000000
[    9.497461][  T226] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a91c3d6
[    9.497462][  T226] R13: 00000000004a1620 R14: 0000000000000000 R15: 00007ffc83175f00
| [   11.058125][  T377] softirqs last disabled at (18498): br_device_event (./include/linux/spinlock.h:353 net/bridge/br.c:109)
| [   11.058127][  T377] Preemption disabled at:
| [   11.058128][  T377] 0x0
| [   11.058138][  T377] Tainted: [W]=WARN
[   11.058139][  T377] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   11.058140][  T377] Call Trace:
[   11.058142][  T377]  <TASK>
[   11.058143][  T377]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   11.058150][  T377]  __might_resched.cold (kernel/sched/core.c:9234)
[   11.058154][  T377]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   11.058158][  T377]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   11.058163][  T377]  __kmalloc_noprof (./include/linux/sched/mm.h:322 (discriminator 2) mm/slub.c:4636 (discriminator 2) mm/slub.c:4974 (discriminator 2) mm/slub.c:5413 (discriminator 2) mm/slub.c:5439 (discriminator 2))
[   11.058165][  T377]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   11.058171][  T377]  ? do_raw_spin_unlock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:32 ./include/asm-generic/qspinlock.h:58 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141)
[   11.058174][  T377]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   11.058178][  T377]  put_chars (drivers/char/virtio_console.c:1176)
[   11.058180][  T377]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   11.058187][  T377]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   11.058194][  T377]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   11.058197][  T377]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   11.058202][  T377]  console_emit_next_record (kernel/printk/printk.c:3183)
[   11.058206][  T377]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   11.058207][  T377]  ? console_flush_one_record (./include/linux/rcupdate.h:314 (discriminator 2) ./include/linux/srcu.h:439 (discriminator 2) kernel/printk/printk.c:291 (discriminator 2) kernel/printk/printk.c:3246 (discriminator 2))
[   11.058211][  T377]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   11.058213][  T377]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   11.058217][  T377]  console_flush_one_record (kernel/printk/printk.c:3268)
[   11.058221][  T377]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   11.058223][  T377]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   11.058229][  T377]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   11.058232][  T377]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   11.058233][  T377]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   11.058235][  T377]  ? lock_acquire (./include/linux/srcutree.h:374 ./include/linux/srcu.h:541 ./include/linux/srcu.h:645 ./include/trace/events/lock.h:23 ./include/trace/events/lock.h:23 kernel/locking/lockdep.c:5871)
[   11.058239][  T377]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   11.058243][  T377]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   11.058245][  T377]  vprintk_emit (kernel/printk/printk.c:2479)
[   11.058248][  T377]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   11.058250][  T377]  ? mark_held_locks (kernel/locking/lockdep.c:4341)
[   11.058252][  T377]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   11.058254][  T377]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   11.058258][  T377]  _printk (kernel/printk/printk.c:2504)
[   11.058262][  T377]  ? snapshot_read.cold (user.c:?)
[   11.058269][  T377]  br_set_state (net/bridge/br_stp.c:57 (discriminator 2))
[   11.058273][  T377]  br_stp_disable_port (net/bridge/br_stp_if.c:106)
[   11.058277][  T377]  br_device_event (net/bridge/br.c:111)
[   11.058279][  T377]  ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:211 (discriminator 1) kernel/locking/spinlock.c:221 (discriminator 1))
[   11.058283][  T377]  ? packet_sendmsg_spkt (af_packet.c:?)
[   11.058288][  T377]  notifier_call_chain (kernel/notifier.c:85)
[   11.058294][  T377]  __dev_notify_flags (net/core/dev.c:2313 net/core/dev.c:2327 net/core/dev.c:9855)
[   11.058299][  T377]  ? netif_change_name (net/core/dev.c:1517)
[   11.058303][  T377]  ? netif_set_allmulti (./include/net/netdev_lock.h:33)
[   11.058306][  T377]  ? __kernel_text_address (kernel/extable.c:79)
[   11.058308][  T377]  ? write_profile (profile.c:?)
[   11.058313][  T377]  netif_change_flags (net/core/dev.c:9882)
[   11.058317][  T377]  do_setlink.isra.0 (net/core/rtnetlink.c:3266 (discriminator 1))
[   11.058320][  T377]  ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1))
[   11.058322][  T377]  ? rtnl_link_get_size (net/core/rtnetlink.c:747)
[   11.058324][  T377]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380)
[   11.058326][  T377]  ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2))
[   11.058329][  T377]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   11.058331][  T377]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   11.058333][  T377]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   11.058335][  T377]  ? kasan_save_stack (mm/kasan/common.c:58)
[   11.058337][  T377]  ? kasan_save_stack (mm/kasan/common.c:57)
[   11.058339][  T377]  ? kasan_save_track (mm/kasan/common.c:78)
[   11.058340][  T377]  ? __kasan_kmalloc (mm/kasan/common.c:398 mm/kasan/common.c:415)
[   11.058342][  T377]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   11.058344][  T377]  ? snd_ac97_proc_read_main (sound/pci/ac97/ac97_proc.c:320)
[   11.058347][  T377]  ? ___sys_sendmsg (net/socket.c:2758)
[   11.058351][  T377]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   11.058353][  T377]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   11.058355][  T377]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   11.058357][  T377]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   11.058358][  T377]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   11.058359][  T377]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   11.058361][  T377]  ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22))
[   11.058363][  T377]  ? __mutex_lock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:3188 kernel/locking/mutex.c:89 kernel/locking/mutex.c:134 kernel/locking/mutex.c:649 kernel/locking/mutex.c:821)
[   11.058365][  T377]  ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1))
[   11.058367][  T377]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   11.058370][  T377]  ? ww_mutex_lock (kernel/locking/mutex.c:934)
[   11.058373][  T377]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   11.058376][  T377]  ? __rtnl_newlink (net/core/rtnetlink.c:4063)
[   11.058381][  T377]  rtnl_newlink (net/core/rtnetlink.c:4215)
[   11.058386][  T377]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   11.058388][  T377]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   11.058392][  T377]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   11.058394][  T377]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   11.058396][  T377]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   11.058398][  T377]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   11.058402][  T377]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   11.058404][  T377]  rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   11.058407][  T377]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   11.058408][  T377]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   11.058412][  T377]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   11.058414][  T377]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   11.058418][  T377]  netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   11.058421][  T377]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   11.058427][  T377]  ? netlink_ack (./include/linux/skbuff.h:2718)
[   11.058434][  T377]  ? netlink_deliver_tap (./include/linux/rcupdate.h:319 (discriminator 2) ./include/linux/rcupdate.h:880 (discriminator 2) ./include/net/netns/generic.h:48 (discriminator 2) net/netlink/af_netlink.c:334 (discriminator 2))
[   11.058436][  T377]  ? netlink_deliver_tap (./include/linux/rcupdate.h:319 (discriminator 2) ./include/linux/rcupdate.h:880 (discriminator 2) net/netlink/af_netlink.c:341 (discriminator 2))
[   11.058440][  T377]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   11.058444][  T377]  ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   11.058447][  T377]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   11.058451][  T377]  netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   11.058455][  T377]  ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7))
[   11.058459][  T377]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   11.058460][  T377]  ? __import_iovec (lib/iov_iter.c:1358 lib/iov_iter.c:1373)
[   11.058466][  T377]  __sock_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4))
[   11.058468][  T377]  ____sys_sendmsg (net/socket.c:2713)
[   11.058470][  T377]  ? copy_msghdr_from_user (net/socket.c:2650)
[   11.058473][  T377]  ? sock_write_iter (net/socket.c:1269)
[   11.058474][  T377]  ? move_addr_to_kernel (net/socket.c:258)
[   11.058482][  T377]  ___sys_sendmsg (net/socket.c:2767)
[   11.058484][  T377]  ? copy_msghdr_from_user (net/socket.c:2619)
[   11.058500][  T377]  __sys_sendmsg (net/socket.c:2799)
[   11.058503][  T377]  ? __sys_sendmsg_sock (net/socket.c:2780)
[   11.058509][  T377]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   11.058512][  T377]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   11.058515][  T377]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   11.058518][  T377]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   11.058520][  T377] RIP: 0033:0x7fa1a1a2654e
[   11.058522][  T377] Code: 4d 89 d8 e8 b4 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 03 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 b4 bd 00 00       	call   0xbdbc
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 03 ff ff ff       	call   0xffffffffffffff3c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 03 ff ff ff       	call   0xffffffffffffff12
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[   11.058524][  T377] RSP: 002b:00007ffee952d160 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
[   11.058526][  T377] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007fa1a1a2654e
[   11.058528][  T377] RDX: 0000000000000000 RSI: 00007ffee952d210 RDI: 0000000000000005
[   11.058529][  T377] RBP: 00007ffee952d170 R08: 0000000000000000 R09: 0000000000000000
[   11.058529][  T377] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a91c3d8
[   11.058530][  T377] R13: 00000000004a1620 R14: 0000000000000000 R15: 00007ffee952d8d0
| [   12.256295][  T516] softirqs last disabled at (19920): br_device_event (./include/linux/spinlock.h:353 net/bridge/br.c:119)
| [   12.256298][  T516] Preemption disabled at:
| [   12.256298][  T516] 0x0
| [   12.256308][  T516] Tainted: [W]=WARN
[   12.256309][  T516] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   12.256311][  T516] Call Trace:
[   12.256312][  T516]  <TASK>
[   12.256314][  T516]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   12.256320][  T516]  __might_resched.cold (kernel/sched/core.c:9234)
[   12.256325][  T516]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   12.256329][  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)
[   12.256333][  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))
[   12.256335][  T516]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   12.256342][  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)
[   12.256344][  T516]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   12.256348][  T516]  put_chars (drivers/char/virtio_console.c:1176)
[   12.256350][  T516]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   12.256351][  T516]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   12.256355][  T516]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   12.256360][  T516]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   12.256368][  T516]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   12.256370][  T516]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   12.256372][  T516]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   12.256376][  T516]  console_emit_next_record (kernel/printk/printk.c:3183)
[   12.256380][  T516]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   12.256382][  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))
[   12.256385][  T516]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   12.256387][  T516]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   12.256391][  T516]  console_flush_one_record (kernel/printk/printk.c:3268)
[   12.256395][  T516]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   12.256396][  T516]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   12.256402][  T516]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   12.256404][  T516]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   12.256406][  T516]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   12.256408][  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)
[   12.256411][  T516]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   12.256413][  T516]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   12.256416][  T516]  vprintk_emit (kernel/printk/printk.c:2479)
[   12.256419][  T516]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   12.256421][  T516]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   12.256423][  T516]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   12.256431][  T516]  _printk (kernel/printk/printk.c:2504)
[   12.256435][  T516]  ? snapshot_read.cold (user.c:?)
[   12.256440][  T516]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   12.256444][  T516]  br_set_state (net/bridge/br_stp.c:57 (discriminator 2))
[   12.256449][  T516]  br_init_port (net/bridge/br_stp_if.c:39)
[   12.256451][  T516]  br_stp_enable_port (net/bridge/br_stp_if.c:93)
[   12.256453][  T516]  br_device_event (net/bridge/br.c:120)
[   12.256456][  T516]  ? packet_sendmsg_spkt (af_packet.c:?)
[   12.256457][  T516]  ? nlmsg_notify (./include/net/netlink.h:1165 ./include/net/netlink.h:1184 net/netlink/af_netlink.c:2599)
[   12.256464][  T516]  notifier_call_chain (kernel/notifier.c:85)
[   12.256470][  T516]  __dev_notify_flags (net/core/dev.c:2313 net/core/dev.c:2327 net/core/dev.c:9853)
[   12.256475][  T516]  ? netif_change_name (net/core/dev.c:1517)
[   12.256478][  T516]  ? netif_set_allmulti (./include/net/netdev_lock.h:33)
[   12.256481][  T516]  ? kernel_text_address (kernel/extable.c:125 kernel/extable.c:94)
[   12.256484][  T516]  ? __kernel_text_address (kernel/extable.c:79)
[   12.256485][  T516]  ? write_profile (profile.c:?)
[   12.256490][  T516]  netif_change_flags (net/core/dev.c:9882)
[   12.256494][  T516]  do_setlink.isra.0 (net/core/rtnetlink.c:3266 (discriminator 1))
[   12.256497][  T516]  ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1))
[   12.256499][  T516]  ? rtnl_link_get_size (net/core/rtnetlink.c:747)
[   12.256500][  T516]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380)
[   12.256502][  T516]  ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2))
[   12.256505][  T516]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   12.256507][  T516]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   12.256509][  T516]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   12.256511][  T516]  ? kasan_save_stack (mm/kasan/common.c:58)
[   12.256514][  T516]  ? kasan_save_stack (mm/kasan/common.c:57)
[   12.256515][  T516]  ? kasan_save_track (mm/kasan/common.c:78)
[   12.256516][  T516]  ? __kasan_kmalloc (mm/kasan/common.c:398 mm/kasan/common.c:415)
[   12.256518][  T516]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   12.256520][  T516]  ? snd_ac97_proc_read_main (sound/pci/ac97/ac97_proc.c:320)
[   12.256523][  T516]  ? ___sys_sendmsg (net/socket.c:2758)
[   12.256527][  T516]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   12.256529][  T516]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   12.256531][  T516]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   12.256533][  T516]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   12.256535][  T516]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   12.256536][  T516]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   12.256537][  T516]  ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22))
[   12.256540][  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)
[   12.256542][  T516]  ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1))
[   12.256544][  T516]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   12.256547][  T516]  ? ww_mutex_lock (kernel/locking/mutex.c:934)
[   12.256551][  T516]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   12.256553][  T516]  ? __rtnl_newlink (net/core/rtnetlink.c:4063)
[   12.256558][  T516]  rtnl_newlink (net/core/rtnetlink.c:4215)
[   12.256564][  T516]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   12.256566][  T516]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   12.256570][  T516]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   12.256572][  T516]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   12.256574][  T516]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   12.256576][  T516]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   12.256580][  T516]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   12.256582][  T516]  rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   12.256585][  T516]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   12.256586][  T516]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   12.256590][  T516]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   12.256592][  T516]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   12.256596][  T516]  netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   12.256598][  T516]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   12.256601][  T516]  ? netlink_ack (./include/linux/skbuff.h:2718)
[   12.256607][  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))
[   12.256609][  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))
[   12.256613][  T516]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   12.256617][  T516]  ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   12.256620][  T516]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   12.256624][  T516]  netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   12.256628][  T516]  ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7))
[   12.256632][  T516]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   12.256633][  T516]  ? __import_iovec (lib/iov_iter.c:1358 lib/iov_iter.c:1373)
[   12.256638][  T516]  __sock_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4))
[   12.256641][  T516]  ____sys_sendmsg (net/socket.c:2713)
[   12.256643][  T516]  ? copy_msghdr_from_user (net/socket.c:2650)
[   12.256646][  T516]  ? sock_write_iter (net/socket.c:1269)
[   12.256647][  T516]  ? move_addr_to_kernel (net/socket.c:258)
[   12.256655][  T516]  ___sys_sendmsg (net/socket.c:2767)
[   12.256657][  T516]  ? copy_msghdr_from_user (net/socket.c:2619)
[   12.256673][  T516]  __sys_sendmsg (net/socket.c:2799)
[   12.256676][  T516]  ? __sys_sendmsg_sock (net/socket.c:2780)
[   12.256682][  T516]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   12.256685][  T516]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   12.256688][  T516]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   12.256691][  T516]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   12.256693][  T516] RIP: 0033:0x7f1ff811854e
[   12.256695][  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
[   12.256697][  T516] RSP: 002b:00007ffc521bb780 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
[   12.256699][  T516] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f1ff811854e
[   12.256701][  T516] RDX: 0000000000000000 RSI: 00007ffc521bb830 RDI: 0000000000000005
[   12.256702][  T516] RBP: 00007ffc521bb790 R08: 0000000000000000 R09: 0000000000000000
[   12.256702][  T516] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a91c3d9
[   12.256703][  T516] R13: 00000000004a1620 R14: 0000000000000000 R15: 00007ffc521bbef0
| [   13.587753][  T639] softirqs last disabled at (23374): br_device_event (./include/linux/spinlock.h:353 net/bridge/br.c:109)
| [   13.587755][  T639] Preemption disabled at:
| [   13.587756][  T639] 0x0
| [   13.587766][  T639] Tainted: [W]=WARN
[   13.587767][  T639] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   13.587768][  T639] Call Trace:
[   13.587770][  T639]  <TASK>
[   13.587771][  T639]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   13.587778][  T639]  __might_resched.cold (kernel/sched/core.c:9234)
[   13.587782][  T639]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   13.587787][  T639]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   13.587791][  T639]  __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))
[   13.587793][  T639]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   13.587799][  T639]  ? 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)
[   13.587802][  T639]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   13.587806][  T639]  put_chars (drivers/char/virtio_console.c:1176)
[   13.587808][  T639]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   13.587814][  T639]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   13.587822][  T639]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   13.587825][  T639]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   13.587829][  T639]  console_emit_next_record (kernel/printk/printk.c:3183)
[   13.587833][  T639]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   13.587835][  T639]  ? 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))
[   13.587838][  T639]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   13.587841][  T639]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   13.587845][  T639]  console_flush_one_record (kernel/printk/printk.c:3268)
[   13.587849][  T639]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   13.587851][  T639]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   13.587856][  T639]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   13.587859][  T639]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   13.587861][  T639]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   13.587862][  T639]  ? 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)
[   13.587866][  T639]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   13.587868][  T639]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   13.587870][  T639]  vprintk_emit (kernel/printk/printk.c:2479)
[   13.587874][  T639]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   13.587875][  T639]  ? mark_held_locks (kernel/locking/lockdep.c:4341)
[   13.587877][  T639]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   13.587879][  T639]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   13.587884][  T639]  _printk (kernel/printk/printk.c:2504)
[   13.587888][  T639]  ? snapshot_read.cold (user.c:?)
[   13.587895][  T639]  br_set_state (net/bridge/br_stp.c:57 (discriminator 2))
[   13.587899][  T639]  br_stp_disable_port (net/bridge/br_stp_if.c:106)
[   13.587903][  T639]  br_device_event (net/bridge/br.c:111)
[   13.587905][  T639]  ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:211 (discriminator 1) kernel/locking/spinlock.c:221 (discriminator 1))
[   13.587909][  T639]  ? packet_sendmsg_spkt (af_packet.c:?)
[   13.587914][  T639]  notifier_call_chain (kernel/notifier.c:85)
[   13.587920][  T639]  __dev_notify_flags (net/core/dev.c:2313 net/core/dev.c:2327 net/core/dev.c:9855)
[   13.587925][  T639]  ? netif_change_name (net/core/dev.c:1517)
[   13.587929][  T639]  ? netif_set_allmulti (./include/net/netdev_lock.h:33)
[   13.587932][  T639]  ? __kernel_text_address (kernel/extable.c:79)
[   13.587935][  T639]  ? write_profile (profile.c:?)
[   13.587939][  T639]  netif_change_flags (net/core/dev.c:9882)
[   13.587943][  T639]  do_setlink.isra.0 (net/core/rtnetlink.c:3266 (discriminator 1))
[   13.587947][  T639]  ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1))
[   13.587949][  T639]  ? rtnl_link_get_size (net/core/rtnetlink.c:747)
[   13.587950][  T639]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380)
[   13.587952][  T639]  ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2))
[   13.587955][  T639]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   13.587957][  T639]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   13.587959][  T639]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   13.587961][  T639]  ? kasan_save_stack (mm/kasan/common.c:58)
[   13.587963][  T639]  ? kasan_save_stack (mm/kasan/common.c:57)
[   13.587965][  T639]  ? kasan_save_track (mm/kasan/common.c:78)
[   13.587966][  T639]  ? __kasan_kmalloc (mm/kasan/common.c:398 mm/kasan/common.c:415)
[   13.587968][  T639]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   13.587970][  T639]  ? snd_ac97_proc_read_main (sound/pci/ac97/ac97_proc.c:320)
[   13.587973][  T639]  ? ___sys_sendmsg (net/socket.c:2758)
[   13.587977][  T639]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   13.587979][  T639]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   13.587981][  T639]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   13.587983][  T639]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   13.587984][  T639]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   13.587986][  T639]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   13.587987][  T639]  ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22))
[   13.587990][  T639]  ? __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)
[   13.587991][  T639]  ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1))
[   13.587993][  T639]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   13.587996][  T639]  ? ww_mutex_lock (kernel/locking/mutex.c:934)
[   13.588000][  T639]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   13.588002][  T639]  ? __rtnl_newlink (net/core/rtnetlink.c:4063)
[   13.588007][  T639]  rtnl_newlink (net/core/rtnetlink.c:4215)
[   13.588012][  T639]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   13.588014][  T639]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   13.588019][  T639]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   13.588021][  T639]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   13.588023][  T639]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   13.588025][  T639]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   13.588029][  T639]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   13.588031][  T639]  rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   13.588034][  T639]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   13.588035][  T639]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   13.588040][  T639]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   13.588042][  T639]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   13.588045][  T639]  netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   13.588048][  T639]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   13.588051][  T639]  ? netlink_ack (./include/linux/skbuff.h:2718)
[   13.588057][  T639]  ? 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))
[   13.588059][  T639]  ? 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))
[   13.588064][  T639]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   13.588068][  T639]  ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   13.588070][  T639]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   13.588074][  T639]  netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   13.588078][  T639]  ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7))
[   13.588082][  T639]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   13.588084][  T639]  ? __import_iovec (lib/iov_iter.c:1358 lib/iov_iter.c:1373)
[   13.588089][  T639]  __sock_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4))
[   13.588091][  T639]  ____sys_sendmsg (net/socket.c:2713)
[   13.588094][  T639]  ? copy_msghdr_from_user (net/socket.c:2650)
[   13.588096][  T639]  ? sock_write_iter (net/socket.c:1269)
[   13.588097][  T639]  ? move_addr_to_kernel (net/socket.c:258)
[   13.588105][  T639]  ___sys_sendmsg (net/socket.c:2767)
[   13.588107][  T639]  ? copy_msghdr_from_user (net/socket.c:2619)
[   13.588123][  T639]  __sys_sendmsg (net/socket.c:2799)
[   13.588126][  T639]  ? __sys_sendmsg_sock (net/socket.c:2780)
[   13.588132][  T639]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   13.588135][  T639]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   13.588138][  T639]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   13.588141][  T639]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   13.588143][  T639] RIP: 0033:0x7fc6d77e854e
[   13.588145][  T639] 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
[   13.588146][  T639] RSP: 002b:00007ffeb43f52f0 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
[   13.588149][  T639] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007fc6d77e854e
[   13.588150][  T639] RDX: 0000000000000000 RSI: 00007ffeb43f53a0 RDI: 0000000000000005
[   13.588151][  T639] RBP: 00007ffeb43f5300 R08: 0000000000000000 R09: 0000000000000000
[   13.588152][  T639] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a91c3da
[   13.588153][  T639] R13: 00000000004a1620 R14: 0000000000000000 R15: 00007ffeb43f5a60
| [   14.787485][  T777] softirqs last disabled at (14580): br_device_event (./include/linux/spinlock.h:353 net/bridge/br.c:119)
| [   14.787487][  T777] Preemption disabled at:
| [   14.787488][  T777] 0x0
| [   14.787498][  T777] Tainted: [W]=WARN
[   14.787498][  T777] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   14.787500][  T777] Call Trace:
[   14.787501][  T777]  <TASK>
[   14.787503][  T777]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   14.787509][  T777]  __might_resched.cold (kernel/sched/core.c:9234)
[   14.787513][  T777]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   14.787517][  T777]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   14.787521][  T777]  __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))
[   14.787523][  T777]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   14.787530][  T777]  ? 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)
[   14.787532][  T777]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   14.787536][  T777]  put_chars (drivers/char/virtio_console.c:1176)
[   14.787538][  T777]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   14.787540][  T777]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   14.787543][  T777]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   14.787549][  T777]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   14.787556][  T777]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   14.787559][  T777]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   14.787561][  T777]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   14.787565][  T777]  console_emit_next_record (kernel/printk/printk.c:3183)
[   14.787569][  T777]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   14.787570][  T777]  ? 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))
[   14.787574][  T777]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   14.787575][  T777]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   14.787579][  T777]  console_flush_one_record (kernel/printk/printk.c:3268)
[   14.787583][  T777]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   14.787585][  T777]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   14.787590][  T777]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   14.787593][  T777]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   14.787595][  T777]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   14.787596][  T777]  ? 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)
[   14.787600][  T777]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   14.787602][  T777]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   14.787604][  T777]  vprintk_emit (kernel/printk/printk.c:2479)
[   14.787608][  T777]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   14.787610][  T777]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   14.787611][  T777]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   14.787616][  T777]  _printk (kernel/printk/printk.c:2504)
[   14.787620][  T777]  ? snapshot_read.cold (user.c:?)
[   14.787625][  T777]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   14.787628][  T777]  br_set_state (net/bridge/br_stp.c:57 (discriminator 2))
[   14.787633][  T777]  br_init_port (net/bridge/br_stp_if.c:39)
[   14.787636][  T777]  br_stp_enable_port (net/bridge/br_stp_if.c:93)
[   14.787637][  T777]  br_device_event (net/bridge/br.c:120)
[   14.787640][  T777]  ? packet_sendmsg_spkt (af_packet.c:?)
[   14.787642][  T777]  ? nlmsg_notify (./include/net/netlink.h:1165 ./include/net/netlink.h:1184 net/netlink/af_netlink.c:2599)
[   14.787649][  T777]  notifier_call_chain (kernel/notifier.c:85)
[   14.787654][  T777]  __dev_notify_flags (net/core/dev.c:2313 net/core/dev.c:2327 net/core/dev.c:9853)
[   14.787660][  T777]  ? netif_change_name (net/core/dev.c:1517)
[   14.787663][  T777]  ? netif_set_allmulti (./include/net/netdev_lock.h:33)
[   14.787666][  T777]  ? kernel_text_address (kernel/extable.c:125 kernel/extable.c:94)
[   14.787669][  T777]  ? __kernel_text_address (kernel/extable.c:79)
[   14.787670][  T777]  ? write_profile (profile.c:?)
[   14.787675][  T777]  netif_change_flags (net/core/dev.c:9882)
[   14.787679][  T777]  do_setlink.isra.0 (net/core/rtnetlink.c:3266 (discriminator 1))
[   14.787682][  T777]  ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1))
[   14.787684][  T777]  ? rtnl_link_get_size (net/core/rtnetlink.c:747)
[   14.787685][  T777]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380)
[   14.787687][  T777]  ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2))
[   14.787691][  T777]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   14.787693][  T777]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   14.787694][  T777]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   14.787697][  T777]  ? kasan_save_stack (mm/kasan/common.c:58)
[   14.787699][  T777]  ? kasan_save_stack (mm/kasan/common.c:57)
[   14.787700][  T777]  ? kasan_save_track (mm/kasan/common.c:78)
[   14.787701][  T777]  ? __kasan_kmalloc (mm/kasan/common.c:398 mm/kasan/common.c:415)
[   14.787704][  T777]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   14.787706][  T777]  ? snd_ac97_proc_read_main (sound/pci/ac97/ac97_proc.c:320)
[   14.787708][  T777]  ? ___sys_sendmsg (net/socket.c:2758)
[   14.787712][  T777]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   14.787714][  T777]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   14.787717][  T777]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   14.787718][  T777]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   14.787720][  T777]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   14.787721][  T777]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   14.787723][  T777]  ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22))
[   14.787725][  T777]  ? __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)
[   14.787727][  T777]  ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1))
[   14.787729][  T777]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   14.787733][  T777]  ? ww_mutex_lock (kernel/locking/mutex.c:934)
[   14.787736][  T777]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   14.787738][  T777]  ? __rtnl_newlink (net/core/rtnetlink.c:4063)
[   14.787743][  T777]  rtnl_newlink (net/core/rtnetlink.c:4215)
[   14.787749][  T777]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   14.787751][  T777]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   14.787755][  T777]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   14.787757][  T777]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   14.787759][  T777]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   14.787761][  T777]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   14.787764][  T777]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   14.787766][  T777]  rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   14.787769][  T777]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   14.787771][  T777]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   14.787775][  T777]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   14.787777][  T777]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   14.787780][  T777]  netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   14.787782][  T777]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   14.787785][  T777]  ? netlink_ack (./include/linux/skbuff.h:2718)
[   14.787791][  T777]  ? 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))
[   14.787793][  T777]  ? 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))
[   14.787798][  T777]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   14.787802][  T777]  ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   14.787804][  T777]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   14.787809][  T777]  netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   14.787812][  T777]  ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7))
[   14.787816][  T777]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   14.787818][  T777]  ? __import_iovec (lib/iov_iter.c:1358 lib/iov_iter.c:1373)
[   14.787823][  T777]  __sock_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4))
[   14.787826][  T777]  ____sys_sendmsg (net/socket.c:2713)
[   14.787828][  T777]  ? copy_msghdr_from_user (net/socket.c:2650)
[   14.787831][  T777]  ? sock_write_iter (net/socket.c:1269)
[   14.787832][  T777]  ? move_addr_to_kernel (net/socket.c:258)
[   14.787840][  T777]  ___sys_sendmsg (net/socket.c:2767)
[   14.787842][  T777]  ? copy_msghdr_from_user (net/socket.c:2619)
[   14.787858][  T777]  __sys_sendmsg (net/socket.c:2799)
[   14.787861][  T777]  ? __sys_sendmsg_sock (net/socket.c:2780)
[   14.787867][  T777]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   14.787870][  T777]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   14.787873][  T777]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   14.787876][  T777]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   14.787878][  T777] RIP: 0033:0x7fe0d3e3554e
[   14.787880][  T777] 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
[   14.787881][  T777] RSP: 002b:00007ffe8cb312d0 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
[   14.787884][  T777] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007fe0d3e3554e
[   14.787885][  T777] RDX: 0000000000000000 RSI: 00007ffe8cb31380 RDI: 0000000000000005
[   14.787886][  T777] RBP: 00007ffe8cb312e0 R08: 0000000000000000 R09: 0000000000000000
[   14.787887][  T777] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a91c3dc
[   14.787888][  T777] R13: 00000000004a1620 R14: 0000000000000000 R15: 00007ffe8cb31a40
| [   16.330931][  T921] softirqs last disabled at (15824): br_device_event (./include/linux/spinlock.h:353 net/bridge/br.c:109)
| [   16.330933][  T921] Preemption disabled at:
| [   16.330934][  T921] 0x0
| [   16.330944][  T921] Tainted: [W]=WARN
[   16.330944][  T921] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   16.330946][  T921] Call Trace:
[   16.330947][  T921]  <TASK>
[   16.330949][  T921]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   16.330955][  T921]  __might_resched.cold (kernel/sched/core.c:9234)
[   16.330959][  T921]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   16.330963][  T921]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   16.330968][  T921]  __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))
[   16.330970][  T921]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   16.330976][  T921]  ? 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)
[   16.330979][  T921]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   16.330983][  T921]  put_chars (drivers/char/virtio_console.c:1176)
[   16.330985][  T921]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   16.330991][  T921]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   16.330999][  T921]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   16.331002][  T921]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   16.331007][  T921]  console_emit_next_record (kernel/printk/printk.c:3183)
[   16.331011][  T921]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   16.331013][  T921]  ? 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))
[   16.331016][  T921]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   16.331018][  T921]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   16.331022][  T921]  console_flush_one_record (kernel/printk/printk.c:3268)
[   16.331027][  T921]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   16.331028][  T921]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   16.331034][  T921]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   16.331037][  T921]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   16.331038][  T921]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   16.331040][  T921]  ? 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)
[   16.331044][  T921]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   16.331045][  T921]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   16.331048][  T921]  vprintk_emit (kernel/printk/printk.c:2479)
[   16.331051][  T921]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   16.331052][  T921]  ? mark_held_locks (kernel/locking/lockdep.c:4341)
[   16.331055][  T921]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   16.331057][  T921]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   16.331061][  T921]  _printk (kernel/printk/printk.c:2504)
[   16.331065][  T921]  ? snapshot_read.cold (user.c:?)
[   16.331072][  T921]  br_set_state (net/bridge/br_stp.c:57 (discriminator 2))
[   16.331077][  T921]  br_stp_disable_port (net/bridge/br_stp_if.c:106)
[   16.331080][  T921]  br_device_event (net/bridge/br.c:111)
[   16.331082][  T921]  ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:211 (discriminator 1) kernel/locking/spinlock.c:221 (discriminator 1))
[   16.331086][  T921]  ? packet_sendmsg_spkt (af_packet.c:?)
[   16.331092][  T921]  notifier_call_chain (kernel/notifier.c:85)
[   16.331097][  T921]  __dev_notify_flags (net/core/dev.c:2313 net/core/dev.c:2327 net/core/dev.c:9855)
[   16.331103][  T921]  ? netif_change_name (net/core/dev.c:1517)
[   16.331106][  T921]  ? netif_set_allmulti (./include/net/netdev_lock.h:33)
[   16.331110][  T921]  ? __kernel_text_address (kernel/extable.c:79)
[   16.331112][  T921]  ? write_profile (profile.c:?)
[   16.331117][  T921]  netif_change_flags (net/core/dev.c:9882)
[   16.331121][  T921]  do_setlink.isra.0 (net/core/rtnetlink.c:3266 (discriminator 1))
[   16.331124][  T921]  ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1))
[   16.331126][  T921]  ? rtnl_link_get_size (net/core/rtnetlink.c:747)
[   16.331127][  T921]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380)
[   16.331129][  T921]  ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2))
[   16.331132][  T921]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   16.331135][  T921]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   16.331136][  T921]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   16.331139][  T921]  ? kasan_save_stack (mm/kasan/common.c:58)
[   16.331141][  T921]  ? kasan_save_stack (mm/kasan/common.c:57)
[   16.331142][  T921]  ? kasan_save_track (mm/kasan/common.c:78)
[   16.331143][  T921]  ? __kasan_kmalloc (mm/kasan/common.c:398 mm/kasan/common.c:415)
[   16.331146][  T921]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   16.331148][  T921]  ? snd_ac97_proc_read_main (sound/pci/ac97/ac97_proc.c:320)
[   16.331150][  T921]  ? ___sys_sendmsg (net/socket.c:2758)
[   16.331154][  T921]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   16.331156][  T921]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   16.331159][  T921]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   16.331160][  T921]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   16.331162][  T921]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   16.331163][  T921]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   16.331165][  T921]  ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22))
[   16.331167][  T921]  ? __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)
[   16.331168][  T921]  ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1))
[   16.331170][  T921]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   16.331174][  T921]  ? ww_mutex_lock (kernel/locking/mutex.c:934)
[   16.331177][  T921]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   16.331179][  T921]  ? __rtnl_newlink (net/core/rtnetlink.c:4063)
[   16.331184][  T921]  rtnl_newlink (net/core/rtnetlink.c:4215)
[   16.331190][  T921]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   16.331191][  T921]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   16.331196][  T921]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   16.331198][  T921]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   16.331200][  T921]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   16.331202][  T921]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   16.331206][  T921]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   16.331208][  T921]  rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   16.331211][  T921]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   16.331212][  T921]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   16.331216][  T921]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   16.331218][  T921]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   16.331222][  T921]  netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   16.331225][  T921]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   16.331228][  T921]  ? netlink_ack (./include/linux/skbuff.h:2718)
[   16.331234][  T921]  ? 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))
[   16.331236][  T921]  ? 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))
[   16.331243][  T921]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   16.331247][  T921]  ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   16.331250][  T921]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   16.331254][  T921]  netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   16.331258][  T921]  ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7))
[   16.331262][  T921]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   16.331263][  T921]  ? __import_iovec (lib/iov_iter.c:1358 lib/iov_iter.c:1373)
[   16.331269][  T921]  __sock_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4))
[   16.331271][  T921]  ____sys_sendmsg (net/socket.c:2713)
[   16.331274][  T921]  ? copy_msghdr_from_user (net/socket.c:2650)
[   16.331276][  T921]  ? sock_write_iter (net/socket.c:1269)
[   16.331278][  T921]  ? move_addr_to_kernel (net/socket.c:258)
[   16.331285][  T921]  ___sys_sendmsg (net/socket.c:2767)
[   16.331288][  T921]  ? copy_msghdr_from_user (net/socket.c:2619)
[   16.331303][  T921]  __sys_sendmsg (net/socket.c:2799)
[   16.331306][  T921]  ? __sys_sendmsg_sock (net/socket.c:2780)
[   16.331313][  T921]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   16.331316][  T921]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   16.331318][  T921]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   16.331321][  T921]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   16.331323][  T921] RIP: 0033:0x7f908ef2b54e
[   16.331326][  T921] 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
[   16.331327][  T921] RSP: 002b:00007ffffc5d6af0 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
[   16.331330][  T921] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f908ef2b54e
[   16.331331][  T921] RDX: 0000000000000000 RSI: 00007ffffc5d6ba0 RDI: 0000000000000005
[   16.331332][  T921] RBP: 00007ffffc5d6b00 R08: 0000000000000000 R09: 0000000000000000
[   16.331333][  T921] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a91c3dd
[   16.331334][  T921] R13: 00000000004a1620 R14: 0000000000000000 R15: 00007ffffc5d7260
| [   17.509711][  T860] softirqs last disabled at (11054): br_port_carrier_check (./include/linux/spinlock.h:353 net/bridge/br_if.c:87)
| [   17.509714][  T860] Preemption disabled at:
| [   17.509714][  T860] 0x0
| [   17.509724][  T860] Tainted: [W]=WARN
[   17.509725][  T860] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   17.509727][  T860] Workqueue: events_unbound linkwatch_event
[   17.509730][  T860] Call Trace:
[   17.509731][  T860]  <TASK>
[   17.509733][  T860]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   17.509740][  T860]  __might_resched.cold (kernel/sched/core.c:9234)
[   17.509744][  T860]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   17.509748][  T860]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   17.509753][  T860]  __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))
[   17.509755][  T860]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   17.509761][  T860]  ? 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)
[   17.509764][  T860]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   17.509767][  T860]  put_chars (drivers/char/virtio_console.c:1176)
[   17.509770][  T860]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   17.509772][  T860]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   17.509775][  T860]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   17.509778][  T860]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   17.509783][  T860]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   17.509787][  T860]  ? mark_usage (kernel/locking/lockdep.c:4690)
[   17.509789][  T860]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   17.509790][  T860]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   17.509795][  T860]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   17.509796][  T860]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   17.509801][  T860]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   17.509805][  T860]  console_emit_next_record (kernel/printk/printk.c:3183)
[   17.509809][  T860]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   17.509811][  T860]  ? 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))
[   17.509814][  T860]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   17.509816][  T860]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   17.509820][  T860]  console_flush_one_record (kernel/printk/printk.c:3268)
[   17.509824][  T860]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   17.509826][  T860]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   17.509831][  T860]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   17.509834][  T860]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   17.509836][  T860]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   17.509838][  T860]  ? 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)
[   17.509842][  T860]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   17.509843][  T860]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   17.509846][  T860]  vprintk_emit (kernel/printk/printk.c:2479)
[   17.509849][  T860]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   17.509851][  T860]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   17.509853][  T860]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   17.509857][  T860]  _printk (kernel/printk/printk.c:2504)
[   17.509861][  T860]  ? snapshot_read.cold (user.c:?)
[   17.509866][  T860]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   17.509870][  T860]  br_set_state (net/bridge/br_stp.c:57 (discriminator 2))
[   17.509874][  T860]  br_init_port (net/bridge/br_stp_if.c:39)
[   17.509877][  T860]  br_stp_enable_port (net/bridge/br_stp_if.c:93)
[   17.509878][  T860]  br_port_carrier_check (net/bridge/br_if.c:90)
[   17.509882][  T860]  br_device_event (net/bridge/br.c:101)
[   17.509886][  T860]  ? packet_sendmsg_spkt (af_packet.c:?)
[   17.509887][  T860]  ? nlmsg_notify (./include/net/netlink.h:1165 ./include/net/netlink.h:1184 net/netlink/af_netlink.c:2599)
[   17.509894][  T860]  notifier_call_chain (kernel/notifier.c:85)
[   17.509900][  T860]  netif_state_change (net/core/dev.c:1625)
[   17.509905][  T860]  ? call_netdevice_notifiers_info (./include/net/net_namespace.h:422 (discriminator 7))
[   17.509909][  T860]  ? linkwatch_do_dev (net/core/link_watch.c:182 net/core/link_watch.c:166)
[   17.509911][  T860]  __linkwatch_run_queue (net/core/link_watch.c:240)
[   17.509914][  T860]  ? linkwatch_do_dev (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   17.509917][  T860]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   17.509921][  T860]  linkwatch_event (net/core/link_watch.c:314 (discriminator 11))
[   17.509924][  T860]  ? __linkwatch_run_queue (net/core/link_watch.c:213)
[   17.509927][  T860]  process_one_work (kernel/workqueue.c:3387)
[   17.509934][  T860]  ? __queue_delayed_work (kernel/workqueue.c:2622)
[   17.509937][  T860]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   17.509944][  T860]  worker_thread (kernel/workqueue.c:3470 kernel/workqueue.c:3551)
[   17.509948][  T860]  ? rescuer_thread (./include/linux/list.h:419 (discriminator 3))
[   17.509951][  T860]  ? __kthread_parkme (./include/linux/instrumented.h:82 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 kernel/kthread.c:272)
[   17.509953][  T860]  ? rescuer_thread (./include/linux/list.h:419 (discriminator 3))
[   17.509956][  T860]  ? rescuer_thread (./include/linux/list.h:419 (discriminator 3))
[   17.509958][  T860]  kthread (kernel/kthread.c:436)
[   17.509960][  T860]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[   17.509964][  T860]  ? kthread_affine_preferred (kernel/kthread.c:857)
[   17.509967][  T860]  ret_from_fork (arch/x86/kernel/process.c:158)
[   17.509971][  T860]  ? arch_exit_to_user_mode_prepare.isra.0 (arch/x86/entry/vdso/vma.c:80 (discriminator 1))
[   17.509974][  T860]  ? __switch_to (arch/x86/kernel/process_64.c:403 arch/x86/kernel/process_64.c:663)
[   17.509978][  T860]  ? kthread_affine_preferred (kernel/kthread.c:857)
[   17.509980][  T860]  ret_from_fork_asm (arch/x86/entry/entry_64.S:245)
| [   18.915753][ T1184] softirqs last disabled at (19404): br_device_event (./include/linux/spinlock.h:353 net/bridge/br.c:109)
| [   18.915755][ T1184] Preemption disabled at:
| [   18.915756][ T1184] 0x0
| [   18.915766][ T1184] Tainted: [W]=WARN
[   18.915767][ T1184] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   18.915768][ T1184] Call Trace:
[   18.915770][ T1184]  <TASK>
[   18.915771][ T1184]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   18.915777][ T1184]  __might_resched.cold (kernel/sched/core.c:9234)
[   18.915782][ T1184]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   18.915786][ T1184]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   18.915790][ T1184]  __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))
[   18.915792][ T1184]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   18.915799][ T1184]  ? 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)
[   18.915801][ T1184]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   18.915805][ T1184]  put_chars (drivers/char/virtio_console.c:1176)
[   18.915807][ T1184]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   18.915814][ T1184]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   18.915821][ T1184]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   18.915824][ T1184]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   18.915829][ T1184]  console_emit_next_record (kernel/printk/printk.c:3183)
[   18.915833][ T1184]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   18.915835][ T1184]  ? 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))
[   18.915838][ T1184]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   18.915841][ T1184]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   18.915845][ T1184]  console_flush_one_record (kernel/printk/printk.c:3268)
[   18.915849][ T1184]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   18.915851][ T1184]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   18.915856][ T1184]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   18.915859][ T1184]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   18.915861][ T1184]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   18.915862][ T1184]  ? 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)
[   18.915866][ T1184]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   18.915868][ T1184]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   18.915870][ T1184]  vprintk_emit (kernel/printk/printk.c:2479)
[   18.915874][ T1184]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   18.915875][ T1184]  ? mark_held_locks (kernel/locking/lockdep.c:4341)
[   18.915877][ T1184]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   18.915879][ T1184]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   18.915884][ T1184]  _printk (kernel/printk/printk.c:2504)
[   18.915887][ T1184]  ? snapshot_read.cold (user.c:?)
[   18.915895][ T1184]  br_set_state (net/bridge/br_stp.c:57 (discriminator 2))
[   18.915899][ T1184]  br_stp_disable_port (net/bridge/br_stp_if.c:106)
[   18.915903][ T1184]  br_device_event (net/bridge/br.c:111)
[   18.915905][ T1184]  ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:211 (discriminator 1) kernel/locking/spinlock.c:221 (discriminator 1))
[   18.915909][ T1184]  ? packet_sendmsg_spkt (af_packet.c:?)
[   18.915915][ T1184]  notifier_call_chain (kernel/notifier.c:85)
[   18.915920][ T1184]  __dev_notify_flags (net/core/dev.c:2313 net/core/dev.c:2327 net/core/dev.c:9855)
[   18.915925][ T1184]  ? netif_change_name (net/core/dev.c:1517)
[   18.915929][ T1184]  ? netif_set_allmulti (./include/net/netdev_lock.h:33)
[   18.915932][ T1184]  ? __kernel_text_address (kernel/extable.c:79)
[   18.915934][ T1184]  ? write_profile (profile.c:?)
[   18.915939][ T1184]  netif_change_flags (net/core/dev.c:9882)
[   18.915943][ T1184]  do_setlink.isra.0 (net/core/rtnetlink.c:3266 (discriminator 1))
[   18.915946][ T1184]  ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1))
[   18.915948][ T1184]  ? rtnl_link_get_size (net/core/rtnetlink.c:747)
[   18.915950][ T1184]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380)
[   18.915952][ T1184]  ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2))
[   18.915955][ T1184]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   18.915957][ T1184]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   18.915959][ T1184]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   18.915961][ T1184]  ? kasan_save_stack (mm/kasan/common.c:58)
[   18.915964][ T1184]  ? kasan_save_stack (mm/kasan/common.c:57)
[   18.915965][ T1184]  ? kasan_save_track (mm/kasan/common.c:78)
[   18.915966][ T1184]  ? __kasan_kmalloc (mm/kasan/common.c:398 mm/kasan/common.c:415)
[   18.915968][ T1184]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   18.915970][ T1184]  ? snd_ac97_proc_read_main (sound/pci/ac97/ac97_proc.c:320)
[   18.915973][ T1184]  ? ___sys_sendmsg (net/socket.c:2758)
[   18.915977][ T1184]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   18.915979][ T1184]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   18.915981][ T1184]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   18.915983][ T1184]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   18.915984][ T1184]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   18.915985][ T1184]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   18.915987][ T1184]  ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22))
[   18.915989][ T1184]  ? __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)
[   18.915991][ T1184]  ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1))
[   18.915993][ T1184]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   18.915996][ T1184]  ? ww_mutex_lock (kernel/locking/mutex.c:934)
[   18.915999][ T1184]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   18.916002][ T1184]  ? __rtnl_newlink (net/core/rtnetlink.c:4063)
[   18.916007][ T1184]  rtnl_newlink (net/core/rtnetlink.c:4215)
[   18.916012][ T1184]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   18.916014][ T1184]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   18.916018][ T1184]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   18.916020][ T1184]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   18.916022][ T1184]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   18.916024][ T1184]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   18.916028][ T1184]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   18.916030][ T1184]  rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   18.916033][ T1184]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   18.916034][ T1184]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   18.916039][ T1184]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   18.916040][ T1184]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   18.916044][ T1184]  netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   18.916047][ T1184]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   18.916050][ T1184]  ? netlink_ack (./include/linux/skbuff.h:2718)
[   18.916056][ T1184]  ? 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))
[   18.916058][ T1184]  ? 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))
[   18.916063][ T1184]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   18.916067][ T1184]  ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   18.916069][ T1184]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   18.916073][ T1184]  netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   18.916077][ T1184]  ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7))
[   18.916081][ T1184]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   18.916083][ T1184]  ? __import_iovec (lib/iov_iter.c:1358 lib/iov_iter.c:1373)
[   18.916088][ T1184]  __sock_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4))
[   18.916091][ T1184]  ____sys_sendmsg (net/socket.c:2713)
[   18.916093][ T1184]  ? copy_msghdr_from_user (net/socket.c:2650)
[   18.916095][ T1184]  ? sock_write_iter (net/socket.c:1269)
[   18.916097][ T1184]  ? move_addr_to_kernel (net/socket.c:258)
[   18.916104][ T1184]  ___sys_sendmsg (net/socket.c:2767)
[   18.916107][ T1184]  ? copy_msghdr_from_user (net/socket.c:2619)
[   18.916123][ T1184]  __sys_sendmsg (net/socket.c:2799)
[   18.916126][ T1184]  ? __sys_sendmsg_sock (net/socket.c:2780)
[   18.916132][ T1184]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   18.916135][ T1184]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   18.916138][ T1184]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   18.916141][ T1184]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   18.916143][ T1184] RIP: 0033:0x7f53e9d6c54e
[   18.916145][ T1184] 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
[   18.916147][ T1184] RSP: 002b:00007ffd2467e7d0 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
[   18.916149][ T1184] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f53e9d6c54e
[   18.916151][ T1184] RDX: 0000000000000000 RSI: 00007ffd2467e880 RDI: 0000000000000005
[   18.916151][ T1184] RBP: 00007ffd2467e7e0 R08: 0000000000000000 R09: 0000000000000000
[   18.916152][ T1184] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a91c3e0
[   18.916153][ T1184] R13: 00000000004a1620 R14: 0000000000000000 R15: 00007ffd2467ef40
| [   20.102922][ T1322] softirqs last disabled at (23274): br_device_event (./include/linux/spinlock.h:353 net/bridge/br.c:119)
| [   20.102924][ T1322] Preemption disabled at:
| [   20.102924][ T1322] 0x0
| [   20.102934][ T1322] Tainted: [W]=WARN
[   20.102935][ T1322] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   20.102937][ T1322] Call Trace:
[   20.102938][ T1322]  <TASK>
[   20.102939][ T1322]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   20.102946][ T1322]  __might_resched.cold (kernel/sched/core.c:9234)
[   20.102950][ T1322]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   20.102954][ T1322]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   20.102959][ T1322]  __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))
[   20.102961][ T1322]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   20.102967][ T1322]  ? 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)
[   20.102970][ T1322]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   20.102973][ T1322]  put_chars (drivers/char/virtio_console.c:1176)
[   20.102976][ T1322]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   20.102977][ T1322]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   20.102980][ T1322]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   20.102986][ T1322]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   20.102993][ T1322]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   20.102996][ T1322]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   20.102998][ T1322]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   20.103002][ T1322]  console_emit_next_record (kernel/printk/printk.c:3183)
[   20.103006][ T1322]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   20.103007][ T1322]  ? 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))
[   20.103011][ T1322]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   20.103012][ T1322]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   20.103016][ T1322]  console_flush_one_record (kernel/printk/printk.c:3268)
[   20.103020][ T1322]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   20.103022][ T1322]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   20.103027][ T1322]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   20.103030][ T1322]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   20.103032][ T1322]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   20.103034][ T1322]  ? 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)
[   20.103037][ T1322]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   20.103039][ T1322]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   20.103042][ T1322]  vprintk_emit (kernel/printk/printk.c:2479)
[   20.103045][ T1322]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   20.103047][ T1322]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   20.103049][ T1322]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   20.103053][ T1322]  _printk (kernel/printk/printk.c:2504)
[   20.103057][ T1322]  ? snapshot_read.cold (user.c:?)
[   20.103062][ T1322]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   20.103066][ T1322]  br_set_state (net/bridge/br_stp.c:57 (discriminator 2))
[   20.103071][ T1322]  br_init_port (net/bridge/br_stp_if.c:39)
[   20.103073][ T1322]  br_stp_enable_port (net/bridge/br_stp_if.c:93)
[   20.103075][ T1322]  br_device_event (net/bridge/br.c:120)
[   20.103078][ T1322]  ? packet_sendmsg_spkt (af_packet.c:?)
[   20.103080][ T1322]  ? nlmsg_notify (./include/net/netlink.h:1165 ./include/net/netlink.h:1184 net/netlink/af_netlink.c:2599)
[   20.103086][ T1322]  notifier_call_chain (kernel/notifier.c:85)
[   20.103092][ T1322]  __dev_notify_flags (net/core/dev.c:2313 net/core/dev.c:2327 net/core/dev.c:9853)
[   20.103097][ T1322]  ? netif_change_name (net/core/dev.c:1517)
[   20.103101][ T1322]  ? netif_set_allmulti (./include/net/netdev_lock.h:33)
[   20.103103][ T1322]  ? kernel_text_address (kernel/extable.c:125 kernel/extable.c:94)
[   20.103107][ T1322]  ? __kernel_text_address (kernel/extable.c:79)
[   20.103108][ T1322]  ? write_profile (profile.c:?)
[   20.103113][ T1322]  netif_change_flags (net/core/dev.c:9882)
[   20.103117][ T1322]  do_setlink.isra.0 (net/core/rtnetlink.c:3266 (discriminator 1))
[   20.103120][ T1322]  ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1))
[   20.103122][ T1322]  ? rtnl_link_get_size (net/core/rtnetlink.c:747)
[   20.103123][ T1322]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380)
[   20.103125][ T1322]  ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2))
[   20.103128][ T1322]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   20.103130][ T1322]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   20.103132][ T1322]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   20.103134][ T1322]  ? kasan_save_stack (mm/kasan/common.c:58)
[   20.103137][ T1322]  ? kasan_save_stack (mm/kasan/common.c:57)
[   20.103138][ T1322]  ? kasan_save_track (mm/kasan/common.c:78)
[   20.103139][ T1322]  ? __kasan_kmalloc (mm/kasan/common.c:398 mm/kasan/common.c:415)
[   20.103141][ T1322]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   20.103143][ T1322]  ? snd_ac97_proc_read_main (sound/pci/ac97/ac97_proc.c:320)
[   20.103146][ T1322]  ? ___sys_sendmsg (net/socket.c:2758)
[   20.103150][ T1322]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   20.103152][ T1322]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   20.103154][ T1322]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   20.103156][ T1322]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   20.103158][ T1322]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   20.103159][ T1322]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   20.103160][ T1322]  ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22))
[   20.103163][ T1322]  ? __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)
[   20.103165][ T1322]  ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1))
[   20.103167][ T1322]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   20.103170][ T1322]  ? ww_mutex_lock (kernel/locking/mutex.c:934)
[   20.103174][ T1322]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   20.103176][ T1322]  ? __rtnl_newlink (net/core/rtnetlink.c:4063)
[   20.103181][ T1322]  rtnl_newlink (net/core/rtnetlink.c:4215)
[   20.103186][ T1322]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   20.103188][ T1322]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   20.103193][ T1322]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   20.103195][ T1322]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   20.103197][ T1322]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   20.103198][ T1322]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   20.103202][ T1322]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   20.103204][ T1322]  rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   20.103207][ T1322]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   20.103209][ T1322]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   20.103213][ T1322]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   20.103215][ T1322]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   20.103218][ T1322]  netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   20.103220][ T1322]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   20.103223][ T1322]  ? netlink_ack (./include/linux/skbuff.h:2718)
[   20.103230][ T1322]  ? 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))
[   20.103232][ T1322]  ? 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))
[   20.103236][ T1322]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   20.103240][ T1322]  ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   20.103245][ T1322]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   20.103249][ T1322]  netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   20.103253][ T1322]  ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7))
[   20.103257][ T1322]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   20.103259][ T1322]  ? __import_iovec (lib/iov_iter.c:1358 lib/iov_iter.c:1373)
[   20.103264][ T1322]  __sock_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4))
[   20.103267][ T1322]  ____sys_sendmsg (net/socket.c:2713)
[   20.103269][ T1322]  ? copy_msghdr_from_user (net/socket.c:2650)
[   20.103271][ T1322]  ? sock_write_iter (net/socket.c:1269)
[   20.103273][ T1322]  ? move_addr_to_kernel (net/socket.c:258)
[   20.103280][ T1322]  ___sys_sendmsg (net/socket.c:2767)
[   20.103283][ T1322]  ? copy_msghdr_from_user (net/socket.c:2619)
[   20.103298][ T1322]  __sys_sendmsg (net/socket.c:2799)
[   20.103301][ T1322]  ? __sys_sendmsg_sock (net/socket.c:2780)
[   20.103307][ T1322]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   20.103310][ T1322]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   20.103313][ T1322]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   20.103316][ T1322]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   20.103318][ T1322] RIP: 0033:0x7efe27a3454e
[   20.103320][ T1322] 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
[   20.103322][ T1322] RSP: 002b:00007ffe7c8699f0 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
[   20.103324][ T1322] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007efe27a3454e
[   20.103326][ T1322] RDX: 0000000000000000 RSI: 00007ffe7c869aa0 RDI: 0000000000000005
[   20.103326][ T1322] RBP: 00007ffe7c869a00 R08: 0000000000000000 R09: 0000000000000000
[   20.103327][ T1322] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a91c3e1
[   20.103328][ T1322] R13: 00000000004a1620 R14: 0000000000000000 R15: 00007ffe7c86a160
| [   21.640639][   T46] softirqs last disabled at (205600): br_port_carrier_check (./include/linux/spinlock.h:353 net/bridge/br_if.c:87)
| [   21.640641][   T46] Preemption disabled at:
| [   21.640642][   T46] 0x0
| [   21.640651][   T46] Tainted: [W]=WARN
[   21.640652][   T46] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   21.640654][   T46] Workqueue: events_unbound linkwatch_event
[   21.640657][   T46] Call Trace:
[   21.640658][   T46]  <TASK>
[   21.640660][   T46]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   21.640666][   T46]  __might_resched.cold (kernel/sched/core.c:9234)
[   21.640671][   T46]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   21.640675][   T46]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   21.640679][   T46]  __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))
[   21.640681][   T46]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   21.640687][   T46]  ? 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)
[   21.640690][   T46]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   21.640694][   T46]  put_chars (drivers/char/virtio_console.c:1176)
[   21.640696][   T46]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   21.640699][   T46]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   21.640702][   T46]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   21.640705][   T46]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   21.640709][   T46]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   21.640713][   T46]  ? mark_usage (kernel/locking/lockdep.c:4690)
[   21.640715][   T46]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   21.640717][   T46]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   21.640721][   T46]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   21.640723][   T46]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   21.640727][   T46]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   21.640731][   T46]  console_emit_next_record (kernel/printk/printk.c:3183)
[   21.640735][   T46]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   21.640737][   T46]  ? 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))
[   21.640740][   T46]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   21.640742][   T46]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   21.640746][   T46]  console_flush_one_record (kernel/printk/printk.c:3268)
[   21.640750][   T46]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   21.640752][   T46]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   21.640758][   T46]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   21.640760][   T46]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   21.640762][   T46]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   21.640764][   T46]  ? 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)
[   21.640768][   T46]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   21.640770][   T46]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   21.640772][   T46]  vprintk_emit (kernel/printk/printk.c:2479)
[   21.640776][   T46]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   21.640778][   T46]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   21.640779][   T46]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   21.640783][   T46]  _printk (kernel/printk/printk.c:2504)
[   21.640787][   T46]  ? snapshot_read.cold (user.c:?)
[   21.640792][   T46]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   21.640796][   T46]  br_set_state (net/bridge/br_stp.c:57 (discriminator 2))
[   21.640800][   T46]  br_init_port (net/bridge/br_stp_if.c:39)
[   21.640802][   T46]  br_stp_enable_port (net/bridge/br_stp_if.c:93)
[   21.640804][   T46]  br_port_carrier_check (net/bridge/br_if.c:90)
[   21.640808][   T46]  br_device_event (net/bridge/br.c:101)
[   21.640811][   T46]  ? packet_sendmsg_spkt (af_packet.c:?)
[   21.640813][   T46]  ? nlmsg_notify (./include/net/netlink.h:1165 ./include/net/netlink.h:1184 net/netlink/af_netlink.c:2599)
[   21.640820][   T46]  notifier_call_chain (kernel/notifier.c:85)
[   21.640826][   T46]  netif_state_change (net/core/dev.c:1625)
[   21.640830][   T46]  ? call_netdevice_notifiers_info (./include/net/net_namespace.h:422 (discriminator 7))
[   21.640835][   T46]  ? linkwatch_do_dev (net/core/link_watch.c:182 net/core/link_watch.c:166)
[   21.640837][   T46]  __linkwatch_run_queue (net/core/link_watch.c:240)
[   21.640840][   T46]  ? linkwatch_do_dev (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   21.640843][   T46]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   21.640847][   T46]  linkwatch_event (net/core/link_watch.c:314 (discriminator 11))
[   21.640849][   T46]  ? __linkwatch_run_queue (net/core/link_watch.c:213)
[   21.640853][   T46]  process_one_work (kernel/workqueue.c:3387)
[   21.640859][   T46]  ? __queue_delayed_work (kernel/workqueue.c:2622)
[   21.640862][   T46]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   21.640870][   T46]  worker_thread (kernel/workqueue.c:3470 kernel/workqueue.c:3551)
[   21.640877][   T46]  ? rescuer_thread (./include/linux/list.h:419 (discriminator 3))
[   21.640879][   T46]  kthread (kernel/kthread.c:436)
[   21.640881][   T46]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[   21.640885][   T46]  ? kthread_affine_preferred (kernel/kthread.c:857)
[   21.640887][   T46]  ret_from_fork (arch/x86/kernel/process.c:158)
[   21.640892][   T46]  ? arch_exit_to_user_mode_prepare.isra.0 (arch/x86/entry/vdso/vma.c:80 (discriminator 1))
[   21.640895][   T46]  ? __switch_to (arch/x86/kernel/process_64.c:403 arch/x86/kernel/process_64.c:663)
[   21.640898][   T46]  ? kthread_affine_preferred (kernel/kthread.c:857)
[   21.640901][   T46]  ret_from_fork_asm (arch/x86/entry/entry_64.S:245)
| [   22.813874][ T1591] softirqs last disabled at (12768): br_device_event (./include/linux/spinlock.h:353 net/bridge/br.c:119)
| [   22.813877][ T1591] Preemption disabled at:
| [   22.813877][ T1591] 0x0
| [   22.813888][ T1591] Tainted: [W]=WARN
[   22.813889][ T1591] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   22.813890][ T1591] Call Trace:
[   22.813892][ T1591]  <TASK>
[   22.813893][ T1591]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   22.813900][ T1591]  __might_resched.cold (kernel/sched/core.c:9234)
[   22.813904][ T1591]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   22.813908][ T1591]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   22.813912][ T1591]  __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))
[   22.813914][ T1591]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   22.813921][ T1591]  ? 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)
[   22.813923][ T1591]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   22.813927][ T1591]  put_chars (drivers/char/virtio_console.c:1176)
[   22.813930][ T1591]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   22.813931][ T1591]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   22.813934][ T1591]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   22.813940][ T1591]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   22.813947][ T1591]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   22.813950][ T1591]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   22.813952][ T1591]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   22.813956][ T1591]  console_emit_next_record (kernel/printk/printk.c:3183)
[   22.813960][ T1591]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   22.813962][ T1591]  ? 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))
[   22.813965][ T1591]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   22.813967][ T1591]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   22.813971][ T1591]  console_flush_one_record (kernel/printk/printk.c:3268)
[   22.813975][ T1591]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   22.813977][ T1591]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   22.813982][ T1591]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   22.813985][ T1591]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   22.813987][ T1591]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   22.813988][ T1591]  ? 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)
[   22.813992][ T1591]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   22.813994][ T1591]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   22.813996][ T1591]  vprintk_emit (kernel/printk/printk.c:2479)
[   22.813999][ T1591]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   22.814001][ T1591]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   22.814003][ T1591]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   22.814008][ T1591]  _printk (kernel/printk/printk.c:2504)
[   22.814012][ T1591]  ? snapshot_read.cold (user.c:?)
[   22.814017][ T1591]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   22.814021][ T1591]  br_set_state (net/bridge/br_stp.c:57 (discriminator 2))
[   22.814025][ T1591]  br_init_port (net/bridge/br_stp_if.c:39)
[   22.814028][ T1591]  br_stp_enable_port (net/bridge/br_stp_if.c:93)
[   22.814030][ T1591]  br_device_event (net/bridge/br.c:120)
[   22.814033][ T1591]  ? packet_sendmsg_spkt (af_packet.c:?)
[   22.814034][ T1591]  ? nlmsg_notify (./include/net/netlink.h:1165 ./include/net/netlink.h:1184 net/netlink/af_netlink.c:2599)
[   22.814041][ T1591]  notifier_call_chain (kernel/notifier.c:85)
[   22.814047][ T1591]  __dev_notify_flags (net/core/dev.c:2313 net/core/dev.c:2327 net/core/dev.c:9853)
[   22.814052][ T1591]  ? netif_change_name (net/core/dev.c:1517)
[   22.814056][ T1591]  ? netif_set_allmulti (./include/net/netdev_lock.h:33)
[   22.814058][ T1591]  ? kernel_text_address (kernel/extable.c:125 kernel/extable.c:94)
[   22.814061][ T1591]  ? __kernel_text_address (kernel/extable.c:79)
[   22.814063][ T1591]  ? write_profile (profile.c:?)
[   22.814067][ T1591]  netif_change_flags (net/core/dev.c:9882)
[   22.814071][ T1591]  do_setlink.isra.0 (net/core/rtnetlink.c:3266 (discriminator 1))
[   22.814075][ T1591]  ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1))
[   22.814077][ T1591]  ? rtnl_link_get_size (net/core/rtnetlink.c:747)
[   22.814078][ T1591]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380)
[   22.814080][ T1591]  ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2))
[   22.814083][ T1591]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   22.814085][ T1591]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   22.814087][ T1591]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   22.814089][ T1591]  ? kasan_save_stack (mm/kasan/common.c:58)
[   22.814092][ T1591]  ? kasan_save_stack (mm/kasan/common.c:57)
[   22.814093][ T1591]  ? kasan_save_track (mm/kasan/common.c:78)
[   22.814094][ T1591]  ? __kasan_kmalloc (mm/kasan/common.c:398 mm/kasan/common.c:415)
[   22.814096][ T1591]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   22.814098][ T1591]  ? snd_ac97_proc_read_main (sound/pci/ac97/ac97_proc.c:320)
[   22.814101][ T1591]  ? ___sys_sendmsg (net/socket.c:2758)
[   22.814105][ T1591]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   22.814107][ T1591]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   22.814109][ T1591]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   22.814111][ T1591]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   22.814113][ T1591]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   22.814114][ T1591]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   22.814115][ T1591]  ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22))
[   22.814118][ T1591]  ? __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)
[   22.814121][ T1591]  ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1))
[   22.814123][ T1591]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   22.814126][ T1591]  ? ww_mutex_lock (kernel/locking/mutex.c:934)
[   22.814129][ T1591]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   22.814132][ T1591]  ? __rtnl_newlink (net/core/rtnetlink.c:4063)
[   22.814137][ T1591]  rtnl_newlink (net/core/rtnetlink.c:4215)
[   22.814142][ T1591]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   22.814144][ T1591]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   22.814148][ T1591]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   22.814150][ T1591]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   22.814152][ T1591]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   22.814154][ T1591]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   22.814158][ T1591]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   22.814160][ T1591]  rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   22.814163][ T1591]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   22.814164][ T1591]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   22.814169][ T1591]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   22.814171][ T1591]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   22.814174][ T1591]  netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   22.814176][ T1591]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   22.814179][ T1591]  ? netlink_ack (./include/linux/skbuff.h:2718)
[   22.814185][ T1591]  ? 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))
[   22.814187][ T1591]  ? 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))
[   22.814191][ T1591]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   22.814195][ T1591]  ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   22.814198][ T1591]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   22.814202][ T1591]  netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   22.814206][ T1591]  ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7))
[   22.814210][ T1591]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   22.814211][ T1591]  ? __import_iovec (lib/iov_iter.c:1358 lib/iov_iter.c:1373)
[   22.814217][ T1591]  __sock_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4))
[   22.814219][ T1591]  ____sys_sendmsg (net/socket.c:2713)
[   22.814222][ T1591]  ? copy_msghdr_from_user (net/socket.c:2650)
[   22.814224][ T1591]  ? sock_write_iter (net/socket.c:1269)
[   22.814226][ T1591]  ? move_addr_to_kernel (net/socket.c:258)
[   22.814233][ T1591]  ___sys_sendmsg (net/socket.c:2767)
[   22.814236][ T1591]  ? copy_msghdr_from_user (net/socket.c:2619)
[   22.814254][ T1591]  __sys_sendmsg (net/socket.c:2799)
[   22.814258][ T1591]  ? __sys_sendmsg_sock (net/socket.c:2780)
[   22.814264][ T1591]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   22.814267][ T1591]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   22.814270][ T1591]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   22.814272][ T1591]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   22.814275][ T1591] RIP: 0033:0x7f666e3eb54e
[   22.814277][ T1591] 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
[   22.814278][ T1591] RSP: 002b:00007fff74a14000 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
[   22.814281][ T1591] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f666e3eb54e
[   22.814282][ T1591] RDX: 0000000000000000 RSI: 00007fff74a140b0 RDI: 0000000000000005
[   22.814283][ T1591] RBP: 00007fff74a14010 R08: 0000000000000000 R09: 0000000000000000
[   22.814284][ T1591] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a91c3e4
[   22.814285][ T1591] R13: 00000000004a1620 R14: 0000000000000000 R15: 00007fff74a14770
| [   23.889518][ T1709] softirqs last disabled at (29710): br_device_event (./include/linux/spinlock.h:353 net/bridge/br.c:109)
| [   23.889520][ T1709] Preemption disabled at:
| [   23.889520][ T1709] 0x0
| [   23.889530][ T1709] Tainted: [W]=WARN
[   23.889531][ T1709] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   23.889532][ T1709] Call Trace:
[   23.889534][ T1709]  <TASK>
[   23.889535][ T1709]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   23.889542][ T1709]  __might_resched.cold (kernel/sched/core.c:9234)
[   23.889546][ T1709]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   23.889550][ T1709]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   23.889555][ T1709]  __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))
[   23.889557][ T1709]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   23.889563][ T1709]  ? 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)
[   23.889566][ T1709]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   23.889570][ T1709]  put_chars (drivers/char/virtio_console.c:1176)
[   23.889572][ T1709]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   23.889578][ T1709]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   23.889586][ T1709]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   23.889589][ T1709]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   23.889593][ T1709]  console_emit_next_record (kernel/printk/printk.c:3183)
[   23.889597][ T1709]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   23.889599][ T1709]  ? 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))
[   23.889602][ T1709]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   23.889605][ T1709]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   23.889609][ T1709]  console_flush_one_record (kernel/printk/printk.c:3268)
[   23.889613][ T1709]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   23.889615][ T1709]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   23.889621][ T1709]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   23.889623][ T1709]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   23.889625][ T1709]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   23.889627][ T1709]  ? 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)
[   23.889631][ T1709]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   23.889632][ T1709]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   23.889635][ T1709]  vprintk_emit (kernel/printk/printk.c:2479)
[   23.889638][ T1709]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   23.889640][ T1709]  ? mark_held_locks (kernel/locking/lockdep.c:4341)
[   23.889642][ T1709]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   23.889644][ T1709]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   23.889649][ T1709]  _printk (kernel/printk/printk.c:2504)
[   23.889652][ T1709]  ? snapshot_read.cold (user.c:?)
[   23.889659][ T1709]  br_set_state (net/bridge/br_stp.c:57 (discriminator 2))
[   23.889664][ T1709]  br_stp_disable_port (net/bridge/br_stp_if.c:106)
[   23.889667][ T1709]  br_device_event (net/bridge/br.c:111)
[   23.889669][ T1709]  ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:211 (discriminator 1) kernel/locking/spinlock.c:221 (discriminator 1))
[   23.889673][ T1709]  ? packet_sendmsg_spkt (af_packet.c:?)
[   23.889678][ T1709]  notifier_call_chain (kernel/notifier.c:85)
[   23.889684][ T1709]  __dev_notify_flags (net/core/dev.c:2313 net/core/dev.c:2327 net/core/dev.c:9855)
[   23.889689][ T1709]  ? netif_change_name (net/core/dev.c:1517)
[   23.889693][ T1709]  ? netif_set_allmulti (./include/net/netdev_lock.h:33)
[   23.889696][ T1709]  ? __kernel_text_address (kernel/extable.c:79)
[   23.889698][ T1709]  ? write_profile (profile.c:?)
[   23.889703][ T1709]  netif_change_flags (net/core/dev.c:9882)
[   23.889707][ T1709]  do_setlink.isra.0 (net/core/rtnetlink.c:3266 (discriminator 1))
[   23.889711][ T1709]  ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1))
[   23.889713][ T1709]  ? rtnl_link_get_size (net/core/rtnetlink.c:747)
[   23.889714][ T1709]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380)
[   23.889716][ T1709]  ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2))
[   23.889719][ T1709]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   23.889721][ T1709]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   23.889723][ T1709]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   23.889726][ T1709]  ? kasan_save_stack (mm/kasan/common.c:58)
[   23.889728][ T1709]  ? kasan_save_stack (mm/kasan/common.c:57)
[   23.889729][ T1709]  ? kasan_save_track (mm/kasan/common.c:78)
[   23.889730][ T1709]  ? __kasan_kmalloc (mm/kasan/common.c:398 mm/kasan/common.c:415)
[   23.889733][ T1709]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   23.889735][ T1709]  ? snd_ac97_proc_read_main (sound/pci/ac97/ac97_proc.c:320)
[   23.889737][ T1709]  ? ___sys_sendmsg (net/socket.c:2758)
[   23.889741][ T1709]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   23.889743][ T1709]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   23.889746][ T1709]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   23.889747][ T1709]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   23.889749][ T1709]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   23.889750][ T1709]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   23.889752][ T1709]  ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22))
[   23.889754][ T1709]  ? __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)
[   23.889756][ T1709]  ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1))
[   23.889757][ T1709]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   23.889761][ T1709]  ? ww_mutex_lock (kernel/locking/mutex.c:934)
[   23.889764][ T1709]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   23.889767][ T1709]  ? __rtnl_newlink (net/core/rtnetlink.c:4063)
[   23.889772][ T1709]  rtnl_newlink (net/core/rtnetlink.c:4215)
[   23.889777][ T1709]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   23.889779][ T1709]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   23.889784][ T1709]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   23.889785][ T1709]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   23.889788][ T1709]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   23.889789][ T1709]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   23.889793][ T1709]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   23.889795][ T1709]  rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   23.889798][ T1709]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   23.889800][ T1709]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   23.889804][ T1709]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   23.889806][ T1709]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   23.889810][ T1709]  netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   23.889813][ T1709]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   23.889816][ T1709]  ? netlink_ack (./include/linux/skbuff.h:2718)
[   23.889822][ T1709]  ? 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))
[   23.889824][ T1709]  ? 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))
[   23.889828][ T1709]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   23.889832][ T1709]  ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   23.889835][ T1709]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   23.889839][ T1709]  netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   23.889843][ T1709]  ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7))
[   23.889847][ T1709]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   23.889849][ T1709]  ? __import_iovec (lib/iov_iter.c:1358 lib/iov_iter.c:1373)
[   23.889854][ T1709]  __sock_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4))
[   23.889857][ T1709]  ____sys_sendmsg (net/socket.c:2713)
[   23.889859][ T1709]  ? copy_msghdr_from_user (net/socket.c:2650)
[   23.889861][ T1709]  ? sock_write_iter (net/socket.c:1269)
[   23.889863][ T1709]  ? move_addr_to_kernel (net/socket.c:258)
[   23.889870][ T1709]  ___sys_sendmsg (net/socket.c:2767)
[   23.889873][ T1709]  ? copy_msghdr_from_user (net/socket.c:2619)
[   23.889889][ T1709]  __sys_sendmsg (net/socket.c:2799)
[   23.889892][ T1709]  ? __sys_sendmsg_sock (net/socket.c:2780)
[   23.889900][ T1709]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   23.889903][ T1709]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   23.889906][ T1709]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   23.889909][ T1709]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   23.889911][ T1709] RIP: 0033:0x7f128c5a154e
[   23.889913][ T1709] 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
[   23.889915][ T1709] RSP: 002b:00007ffe0044f3b0 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
[   23.889917][ T1709] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f128c5a154e
[   23.889919][ T1709] RDX: 0000000000000000 RSI: 00007ffe0044f460 RDI: 0000000000000005
[   23.889919][ T1709] RBP: 00007ffe0044f3c0 R08: 0000000000000000 R09: 0000000000000000
[   23.889920][ T1709] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a91c3e5
[   23.889921][ T1709] R13: 00000000004a1620 R14: 0000000000000000 R15: 00007ffe0044fb20
| [   25.146970][ T1816] softirqs last disabled at (19190): br_device_event (./include/linux/spinlock.h:353 net/bridge/br.c:109)
| [   25.146972][ T1816] Preemption disabled at:
| [   25.146972][ T1816] 0x0
| [   25.146983][ T1816] Tainted: [W]=WARN
[   25.146984][ T1816] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   25.146985][ T1816] Call Trace:
[   25.146986][ T1816]  <TASK>
[   25.146988][ T1816]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   25.146995][ T1816]  __might_resched.cold (kernel/sched/core.c:9234)
[   25.146999][ T1816]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   25.147003][ T1816]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   25.147008][ T1816]  __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))
[   25.147010][ T1816]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   25.147016][ T1816]  ? 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)
[   25.147018][ T1816]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   25.147022][ T1816]  put_chars (drivers/char/virtio_console.c:1176)
[   25.147025][ T1816]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   25.147031][ T1816]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   25.147038][ T1816]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   25.147041][ T1816]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   25.147046][ T1816]  console_emit_next_record (kernel/printk/printk.c:3183)
[   25.147050][ T1816]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   25.147052][ T1816]  ? 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))
[   25.147055][ T1816]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   25.147057][ T1816]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   25.147061][ T1816]  console_flush_one_record (kernel/printk/printk.c:3268)
[   25.147066][ T1816]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   25.147068][ T1816]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   25.147073][ T1816]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   25.147076][ T1816]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   25.147077][ T1816]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   25.147079][ T1816]  ? 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)
[   25.147083][ T1816]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   25.147085][ T1816]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   25.147087][ T1816]  vprintk_emit (kernel/printk/printk.c:2479)
[   25.147090][ T1816]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   25.147092][ T1816]  ? mark_held_locks (kernel/locking/lockdep.c:4341)
[   25.147094][ T1816]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   25.147096][ T1816]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   25.147101][ T1816]  _printk (kernel/printk/printk.c:2504)
[   25.147104][ T1816]  ? snapshot_read.cold (user.c:?)
[   25.147112][ T1816]  br_set_state (net/bridge/br_stp.c:57 (discriminator 2))
[   25.147116][ T1816]  br_stp_disable_port (net/bridge/br_stp_if.c:106)
[   25.147120][ T1816]  br_device_event (net/bridge/br.c:111)
[   25.147122][ T1816]  ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:211 (discriminator 1) kernel/locking/spinlock.c:221 (discriminator 1))
[   25.147126][ T1816]  ? packet_sendmsg_spkt (af_packet.c:?)
[   25.147131][ T1816]  notifier_call_chain (kernel/notifier.c:85)
[   25.147137][ T1816]  __dev_notify_flags (net/core/dev.c:2313 net/core/dev.c:2327 net/core/dev.c:9855)
[   25.147142][ T1816]  ? netif_change_name (net/core/dev.c:1517)
[   25.147146][ T1816]  ? netif_set_allmulti (./include/net/netdev_lock.h:33)
[   25.147149][ T1816]  ? __kernel_text_address (kernel/extable.c:79)
[   25.147151][ T1816]  ? write_profile (profile.c:?)
[   25.147156][ T1816]  netif_change_flags (net/core/dev.c:9882)
[   25.147160][ T1816]  do_setlink.isra.0 (net/core/rtnetlink.c:3266 (discriminator 1))
[   25.147163][ T1816]  ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1))
[   25.147165][ T1816]  ? rtnl_link_get_size (net/core/rtnetlink.c:747)
[   25.147166][ T1816]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380)
[   25.147168][ T1816]  ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2))
[   25.147172][ T1816]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   25.147174][ T1816]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   25.147175][ T1816]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   25.147178][ T1816]  ? kasan_save_stack (mm/kasan/common.c:58)
[   25.147180][ T1816]  ? kasan_save_stack (mm/kasan/common.c:57)
[   25.147181][ T1816]  ? kasan_save_track (mm/kasan/common.c:78)
[   25.147182][ T1816]  ? __kasan_kmalloc (mm/kasan/common.c:398 mm/kasan/common.c:415)
[   25.147185][ T1816]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   25.147187][ T1816]  ? snd_ac97_proc_read_main (sound/pci/ac97/ac97_proc.c:320)
[   25.147189][ T1816]  ? ___sys_sendmsg (net/socket.c:2758)
[   25.147193][ T1816]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   25.147195][ T1816]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   25.147197][ T1816]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   25.147199][ T1816]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   25.147201][ T1816]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   25.147202][ T1816]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   25.147203][ T1816]  ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22))
[   25.147206][ T1816]  ? __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)
[   25.147207][ T1816]  ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1))
[   25.147209][ T1816]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   25.147212][ T1816]  ? ww_mutex_lock (kernel/locking/mutex.c:934)
[   25.147216][ T1816]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   25.147218][ T1816]  ? __rtnl_newlink (net/core/rtnetlink.c:4063)
[   25.147223][ T1816]  rtnl_newlink (net/core/rtnetlink.c:4215)
[   25.147229][ T1816]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   25.147230][ T1816]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   25.147235][ T1816]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   25.147237][ T1816]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   25.147239][ T1816]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   25.147243][ T1816]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   25.147247][ T1816]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   25.147249][ T1816]  rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   25.147252][ T1816]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   25.147253][ T1816]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   25.147258][ T1816]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   25.147260][ T1816]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   25.147263][ T1816]  netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   25.147266][ T1816]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   25.147269][ T1816]  ? netlink_ack (./include/linux/skbuff.h:2718)
[   25.147276][ T1816]  ? 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))
[   25.147278][ T1816]  ? 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))
[   25.147282][ T1816]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   25.147286][ T1816]  ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   25.147288][ T1816]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   25.147293][ T1816]  netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   25.147296][ T1816]  ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7))
[   25.147300][ T1816]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   25.147302][ T1816]  ? __import_iovec (lib/iov_iter.c:1358 lib/iov_iter.c:1373)
[   25.147307][ T1816]  __sock_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4))
[   25.147310][ T1816]  ____sys_sendmsg (net/socket.c:2713)
[   25.147312][ T1816]  ? copy_msghdr_from_user (net/socket.c:2650)
[   25.147315][ T1816]  ? sock_write_iter (net/socket.c:1269)
[   25.147316][ T1816]  ? move_addr_to_kernel (net/socket.c:258)
[   25.147324][ T1816]  ___sys_sendmsg (net/socket.c:2767)
[   25.147326][ T1816]  ? copy_msghdr_from_user (net/socket.c:2619)
[   25.147342][ T1816]  __sys_sendmsg (net/socket.c:2799)
[   25.147345][ T1816]  ? __sys_sendmsg_sock (net/socket.c:2780)
[   25.147351][ T1816]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   25.147354][ T1816]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   25.147357][ T1816]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   25.147360][ T1816]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   25.147361][ T1816] RIP: 0033:0x7f032f6f854e
[   25.147364][ T1816] 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
[   25.147366][ T1816] RSP: 002b:00007ffe7471d8a0 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
[   25.147368][ T1816] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f032f6f854e
[   25.147370][ T1816] RDX: 0000000000000000 RSI: 00007ffe7471d950 RDI: 0000000000000005
[   25.147370][ T1816] RBP: 00007ffe7471d8b0 R08: 0000000000000000 R09: 0000000000000000
[   25.147371][ T1816] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a91c3e6
[   25.147372][ T1816] R13: 00000000004a1620 R14: 0000000000000000 R15: 00007ffe7471e010
| [   26.335009][ T1954] softirqs last disabled at (26242): br_device_event (./include/linux/spinlock.h:353 net/bridge/br.c:119)
| [   26.335011][ T1954] Preemption disabled at:
| [   26.335012][ T1954] 0x0
| [   26.335022][ T1954] Tainted: [W]=WARN
[   26.335023][ T1954] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   26.335025][ T1954] Call Trace:
[   26.335027][ T1954]  <TASK>
[   26.335028][ T1954]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   26.335034][ T1954]  __might_resched.cold (kernel/sched/core.c:9234)
[   26.335039][ T1954]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   26.335043][ T1954]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   26.335047][ T1954]  __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))
[   26.335049][ T1954]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   26.335056][ T1954]  ? 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)
[   26.335059][ T1954]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   26.335062][ T1954]  put_chars (drivers/char/virtio_console.c:1176)
[   26.335065][ T1954]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   26.335066][ T1954]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   26.335069][ T1954]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   26.335075][ T1954]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   26.335082][ T1954]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   26.335085][ T1954]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   26.335087][ T1954]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   26.335091][ T1954]  console_emit_next_record (kernel/printk/printk.c:3183)
[   26.335095][ T1954]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   26.335097][ T1954]  ? 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))
[   26.335100][ T1954]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   26.335102][ T1954]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   26.335105][ T1954]  console_flush_one_record (kernel/printk/printk.c:3268)
[   26.335110][ T1954]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   26.335112][ T1954]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   26.335117][ T1954]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   26.335120][ T1954]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   26.335122][ T1954]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   26.335123][ T1954]  ? 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)
[   26.335127][ T1954]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   26.335129][ T1954]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   26.335131][ T1954]  vprintk_emit (kernel/printk/printk.c:2479)
[   26.335134][ T1954]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   26.335136][ T1954]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   26.335138][ T1954]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   26.335143][ T1954]  _printk (kernel/printk/printk.c:2504)
[   26.335147][ T1954]  ? snapshot_read.cold (user.c:?)
[   26.335152][ T1954]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   26.335156][ T1954]  br_set_state (net/bridge/br_stp.c:57 (discriminator 2))
[   26.335160][ T1954]  br_init_port (net/bridge/br_stp_if.c:39)
[   26.335163][ T1954]  br_stp_enable_port (net/bridge/br_stp_if.c:93)
[   26.335165][ T1954]  br_device_event (net/bridge/br.c:120)
[   26.335167][ T1954]  ? packet_sendmsg_spkt (af_packet.c:?)
[   26.335169][ T1954]  ? nlmsg_notify (./include/net/netlink.h:1165 ./include/net/netlink.h:1184 net/netlink/af_netlink.c:2599)
[   26.335176][ T1954]  notifier_call_chain (kernel/notifier.c:85)
[   26.335182][ T1954]  __dev_notify_flags (net/core/dev.c:2313 net/core/dev.c:2327 net/core/dev.c:9853)
[   26.335187][ T1954]  ? netif_change_name (net/core/dev.c:1517)
[   26.335191][ T1954]  ? netif_set_allmulti (./include/net/netdev_lock.h:33)
[   26.335193][ T1954]  ? kernel_text_address (kernel/extable.c:125 kernel/extable.c:94)
[   26.335196][ T1954]  ? __kernel_text_address (kernel/extable.c:79)
[   26.335198][ T1954]  ? write_profile (profile.c:?)
[   26.335203][ T1954]  netif_change_flags (net/core/dev.c:9882)
[   26.335206][ T1954]  do_setlink.isra.0 (net/core/rtnetlink.c:3266 (discriminator 1))
[   26.335210][ T1954]  ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1))
[   26.335212][ T1954]  ? rtnl_link_get_size (net/core/rtnetlink.c:747)
[   26.335213][ T1954]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380)
[   26.335215][ T1954]  ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2))
[   26.335219][ T1954]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   26.335220][ T1954]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   26.335222][ T1954]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   26.335225][ T1954]  ? kasan_save_stack (mm/kasan/common.c:58)
[   26.335227][ T1954]  ? kasan_save_stack (mm/kasan/common.c:57)
[   26.335228][ T1954]  ? kasan_save_track (mm/kasan/common.c:78)
[   26.335230][ T1954]  ? __kasan_kmalloc (mm/kasan/common.c:398 mm/kasan/common.c:415)
[   26.335232][ T1954]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   26.335234][ T1954]  ? snd_ac97_proc_read_main (sound/pci/ac97/ac97_proc.c:320)
[   26.335237][ T1954]  ? ___sys_sendmsg (net/socket.c:2758)
[   26.335242][ T1954]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   26.335244][ T1954]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   26.335247][ T1954]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   26.335248][ T1954]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   26.335250][ T1954]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   26.335251][ T1954]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   26.335253][ T1954]  ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22))
[   26.335255][ T1954]  ? __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)
[   26.335258][ T1954]  ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1))
[   26.335260][ T1954]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   26.335263][ T1954]  ? ww_mutex_lock (kernel/locking/mutex.c:934)
[   26.335266][ T1954]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   26.335269][ T1954]  ? __rtnl_newlink (net/core/rtnetlink.c:4063)
[   26.335274][ T1954]  rtnl_newlink (net/core/rtnetlink.c:4215)
[   26.335279][ T1954]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   26.335281][ T1954]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   26.335285][ T1954]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   26.335287][ T1954]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   26.335289][ T1954]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   26.335291][ T1954]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   26.335295][ T1954]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   26.335297][ T1954]  rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   26.335300][ T1954]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   26.335301][ T1954]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   26.335306][ T1954]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   26.335308][ T1954]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   26.335311][ T1954]  netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   26.335313][ T1954]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   26.335316][ T1954]  ? netlink_ack (./include/linux/skbuff.h:2718)
[   26.335322][ T1954]  ? 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))
[   26.335324][ T1954]  ? 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))
[   26.335329][ T1954]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   26.335333][ T1954]  ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   26.335335][ T1954]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   26.335340][ T1954]  netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   26.335344][ T1954]  ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7))
[   26.335347][ T1954]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   26.335349][ T1954]  ? __import_iovec (lib/iov_iter.c:1358 lib/iov_iter.c:1373)
[   26.335354][ T1954]  __sock_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4))
[   26.335357][ T1954]  ____sys_sendmsg (net/socket.c:2713)
[   26.335359][ T1954]  ? copy_msghdr_from_user (net/socket.c:2650)
[   26.335362][ T1954]  ? sock_write_iter (net/socket.c:1269)
[   26.335363][ T1954]  ? move_addr_to_kernel (net/socket.c:258)
[   26.335371][ T1954]  ___sys_sendmsg (net/socket.c:2767)
[   26.335373][ T1954]  ? copy_msghdr_from_user (net/socket.c:2619)
[   26.335389][ T1954]  __sys_sendmsg (net/socket.c:2799)
[   26.335392][ T1954]  ? __sys_sendmsg_sock (net/socket.c:2780)
[   26.335398][ T1954]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   26.335401][ T1954]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   26.335404][ T1954]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   26.335407][ T1954]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   26.335409][ T1954] RIP: 0033:0x7fc50c9c454e
[   26.335411][ T1954] 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
[   26.335413][ T1954] RSP: 002b:00007fff8ab64d80 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
[   26.335416][ T1954] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007fc50c9c454e
[   26.335417][ T1954] RDX: 0000000000000000 RSI: 00007fff8ab64e30 RDI: 0000000000000005
[   26.335418][ T1954] RBP: 00007fff8ab64d90 R08: 0000000000000000 R09: 0000000000000000
[   26.335419][ T1954] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a91c3e7
[   26.335420][ T1954] R13: 00000000004a1620 R14: 0000000000000000 R15: 00007fff8ab654f0
| [   27.731719][  T860] softirqs last disabled at (191348): br_port_carrier_check (./include/linux/spinlock.h:353 net/bridge/br_if.c:87)
| [   27.731722][  T860] Preemption disabled at:
| [   27.731722][  T860] 0x0
| [   27.731732][  T860] Tainted: [W]=WARN
[   27.731733][  T860] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   27.731735][  T860] Workqueue: events_unbound linkwatch_event
[   27.731738][  T860] Call Trace:
[   27.731739][  T860]  <TASK>
[   27.731741][  T860]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   27.731747][  T860]  __might_resched.cold (kernel/sched/core.c:9234)
[   27.731752][  T860]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   27.731756][  T860]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   27.731760][  T860]  __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))
[   27.731762][  T860]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   27.731768][  T860]  ? 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)
[   27.731771][  T860]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   27.731775][  T860]  put_chars (drivers/char/virtio_console.c:1176)
[   27.731777][  T860]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   27.731780][  T860]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   27.731782][  T860]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   27.731785][  T860]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   27.731789][  T860]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   27.731793][  T860]  ? mark_usage (kernel/locking/lockdep.c:4690)
[   27.731795][  T860]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   27.731797][  T860]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   27.731801][  T860]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   27.731803][  T860]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   27.731807][  T860]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   27.731811][  T860]  console_emit_next_record (kernel/printk/printk.c:3183)
[   27.731815][  T860]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   27.731817][  T860]  ? 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))
[   27.731820][  T860]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   27.731822][  T860]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   27.731826][  T860]  console_flush_one_record (kernel/printk/printk.c:3268)
[   27.731830][  T860]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   27.731832][  T860]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   27.731838][  T860]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   27.731840][  T860]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   27.731842][  T860]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   27.731844][  T860]  ? 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)
[   27.731848][  T860]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   27.731849][  T860]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   27.731852][  T860]  vprintk_emit (kernel/printk/printk.c:2479)
[   27.731855][  T860]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   27.731857][  T860]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   27.731859][  T860]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   27.731863][  T860]  _printk (kernel/printk/printk.c:2504)
[   27.731867][  T860]  ? snapshot_read.cold (user.c:?)
[   27.731872][  T860]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   27.731876][  T860]  br_set_state (net/bridge/br_stp.c:57 (discriminator 2))
[   27.731880][  T860]  br_init_port (net/bridge/br_stp_if.c:39)
[   27.731883][  T860]  br_stp_enable_port (net/bridge/br_stp_if.c:93)
[   27.731884][  T860]  br_port_carrier_check (net/bridge/br_if.c:90)
[   27.731888][  T860]  br_device_event (net/bridge/br.c:101)
[   27.731892][  T860]  ? packet_sendmsg_spkt (af_packet.c:?)
[   27.731893][  T860]  ? nlmsg_notify (./include/net/netlink.h:1165 ./include/net/netlink.h:1184 net/netlink/af_netlink.c:2599)
[   27.731900][  T860]  notifier_call_chain (kernel/notifier.c:85)
[   27.731906][  T860]  netif_state_change (net/core/dev.c:1625)
[   27.731911][  T860]  ? call_netdevice_notifiers_info (./include/net/net_namespace.h:422 (discriminator 7))
[   27.731915][  T860]  ? linkwatch_do_dev (net/core/link_watch.c:182 net/core/link_watch.c:166)
[   27.731917][  T860]  __linkwatch_run_queue (net/core/link_watch.c:240)
[   27.731920][  T860]  ? linkwatch_do_dev (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   27.731923][  T860]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   27.731927][  T860]  linkwatch_event (net/core/link_watch.c:314 (discriminator 11))
[   27.731929][  T860]  ? __linkwatch_run_queue (net/core/link_watch.c:213)
[   27.731933][  T860]  process_one_work (kernel/workqueue.c:3387)
[   27.731939][  T860]  ? __queue_delayed_work (kernel/workqueue.c:2622)
[   27.731942][  T860]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   27.731950][  T860]  worker_thread (kernel/workqueue.c:3470 kernel/workqueue.c:3551)
[   27.731954][  T860]  ? rescuer_thread (./include/linux/list.h:419 (discriminator 3))
[   27.731956][  T860]  ? __kthread_parkme (./include/linux/instrumented.h:82 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 kernel/kthread.c:272)
[   27.731959][  T860]  ? rescuer_thread (./include/linux/list.h:419 (discriminator 3))
[   27.731962][  T860]  ? rescuer_thread (./include/linux/list.h:419 (discriminator 3))
[   27.731964][  T860]  kthread (kernel/kthread.c:436)
[   27.731966][  T860]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[   27.731969][  T860]  ? kthread_affine_preferred (kernel/kthread.c:857)
[   27.731972][  T860]  ret_from_fork (arch/x86/kernel/process.c:158)
[   27.731976][  T860]  ? arch_exit_to_user_mode_prepare.isra.0 (arch/x86/entry/vdso/vma.c:80 (discriminator 1))
[   27.731979][  T860]  ? __switch_to (arch/x86/kernel/process_64.c:403 arch/x86/kernel/process_64.c:663)
[   27.731982][  T860]  ? kthread_affine_preferred (kernel/kthread.c:857)
[   27.731985][  T860]  ret_from_fork_asm (arch/x86/entry/entry_64.S:245)
| [   28.939442][  T396] softirqs last disabled at (241274): br_port_carrier_check (./include/linux/spinlock.h:353 net/bridge/br_if.c:87)
| [   28.939444][  T396] Preemption disabled at:
| [   28.939445][  T396] 0x0
| [   28.939455][  T396] Tainted: [W]=WARN
[   28.939456][  T396] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   28.939457][  T396] Workqueue: events_unbound linkwatch_event
[   28.939460][  T396] Call Trace:
[   28.939462][  T396]  <TASK>
[   28.939463][  T396]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   28.939470][  T396]  __might_resched.cold (kernel/sched/core.c:9234)
[   28.939474][  T396]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   28.939478][  T396]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   28.939482][  T396]  __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))
[   28.939484][  T396]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   28.939494][  T396]  ? 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)
[   28.939497][  T396]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   28.939501][  T396]  put_chars (drivers/char/virtio_console.c:1176)
[   28.939503][  T396]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   28.939506][  T396]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   28.939509][  T396]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   28.939512][  T396]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   28.939516][  T396]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   28.939520][  T396]  ? mark_usage (kernel/locking/lockdep.c:4690)
[   28.939522][  T396]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   28.939523][  T396]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   28.939527][  T396]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   28.939529][  T396]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   28.939534][  T396]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   28.939538][  T396]  console_emit_next_record (kernel/printk/printk.c:3183)
[   28.939542][  T396]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   28.939544][  T396]  ? 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))
[   28.939547][  T396]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   28.939549][  T396]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   28.939553][  T396]  console_flush_one_record (kernel/printk/printk.c:3268)
[   28.939557][  T396]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   28.939559][  T396]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   28.939564][  T396]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   28.939567][  T396]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   28.939569][  T396]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   28.939571][  T396]  ? 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)
[   28.939574][  T396]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   28.939576][  T396]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   28.939579][  T396]  vprintk_emit (kernel/printk/printk.c:2479)
[   28.939582][  T396]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   28.939584][  T396]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   28.939586][  T396]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   28.939589][  T396]  _printk (kernel/printk/printk.c:2504)
[   28.939593][  T396]  ? snapshot_read.cold (user.c:?)
[   28.939598][  T396]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   28.939602][  T396]  br_set_state (net/bridge/br_stp.c:57 (discriminator 2))
[   28.939606][  T396]  br_init_port (net/bridge/br_stp_if.c:39)
[   28.939609][  T396]  br_stp_enable_port (net/bridge/br_stp_if.c:93)
[   28.939610][  T396]  br_port_carrier_check (net/bridge/br_if.c:90)
[   28.939614][  T396]  br_device_event (net/bridge/br.c:101)
[   28.939617][  T396]  ? packet_sendmsg_spkt (af_packet.c:?)
[   28.939619][  T396]  ? nlmsg_notify (./include/net/netlink.h:1165 ./include/net/netlink.h:1184 net/netlink/af_netlink.c:2599)
[   28.939626][  T396]  notifier_call_chain (kernel/notifier.c:85)
[   28.939632][  T396]  netif_state_change (net/core/dev.c:1625)
[   28.939637][  T396]  ? call_netdevice_notifiers_info (./include/net/net_namespace.h:422 (discriminator 7))
[   28.939641][  T396]  ? linkwatch_do_dev (net/core/link_watch.c:182 net/core/link_watch.c:166)
[   28.939643][  T396]  __linkwatch_run_queue (net/core/link_watch.c:240)
[   28.939646][  T396]  ? linkwatch_do_dev (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   28.939649][  T396]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   28.939653][  T396]  linkwatch_event (net/core/link_watch.c:314 (discriminator 11))
[   28.939655][  T396]  ? __linkwatch_run_queue (net/core/link_watch.c:213)
[   28.939658][  T396]  process_one_work (kernel/workqueue.c:3387)
[   28.939665][  T396]  ? __queue_delayed_work (kernel/workqueue.c:2622)
[   28.939668][  T396]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   28.939676][  T396]  worker_thread (kernel/workqueue.c:3470 kernel/workqueue.c:3551)
[   28.939680][  T396]  ? rescuer_thread (./include/linux/list.h:419 (discriminator 3))
[   28.939682][  T396]  ? __kthread_parkme (./include/linux/instrumented.h:82 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 kernel/kthread.c:272)
[   28.939685][  T396]  ? rescuer_thread (./include/linux/list.h:419 (discriminator 3))
[   28.939687][  T396]  ? rescuer_thread (./include/linux/list.h:419 (discriminator 3))
[   28.939689][  T396]  kthread (kernel/kthread.c:436)
[   28.939691][  T396]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[   28.939695][  T396]  ? kthread_affine_preferred (kernel/kthread.c:857)
[   28.939697][  T396]  ret_from_fork (arch/x86/kernel/process.c:158)
[   28.939702][  T396]  ? arch_exit_to_user_mode_prepare.isra.0 (arch/x86/entry/vdso/vma.c:80 (discriminator 1))
[   28.939705][  T396]  ? __switch_to (arch/x86/kernel/process_64.c:403 arch/x86/kernel/process_64.c:663)
[   28.939708][  T396]  ? kthread_affine_preferred (kernel/kthread.c:857)
[   28.939711][  T396]  ret_from_fork_asm (arch/x86/entry/entry_64.S:245)
| [   30.223754][ T2337] softirqs last disabled at (11666): br_device_event (./include/linux/spinlock.h:353 net/bridge/br.c:119)
| [   30.223756][ T2337] Preemption disabled at:
| [   30.223757][ T2337] 0x0
| [   30.223767][ T2337] Tainted: [W]=WARN
[   30.223768][ T2337] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   30.223769][ T2337] Call Trace:
[   30.223771][ T2337]  <TASK>
[   30.223772][ T2337]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   30.223779][ T2337]  __might_resched.cold (kernel/sched/core.c:9234)
[   30.223783][ T2337]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   30.223787][ T2337]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   30.223792][ T2337]  __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))
[   30.223794][ T2337]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   30.223800][ T2337]  ? 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)
[   30.223802][ T2337]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   30.223806][ T2337]  put_chars (drivers/char/virtio_console.c:1176)
[   30.223808][ T2337]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   30.223810][ T2337]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   30.223813][ T2337]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   30.223818][ T2337]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   30.223826][ T2337]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   30.223829][ T2337]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   30.223831][ T2337]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   30.223835][ T2337]  console_emit_next_record (kernel/printk/printk.c:3183)
[   30.223839][ T2337]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   30.223841][ T2337]  ? 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))
[   30.223844][ T2337]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   30.223845][ T2337]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   30.223849][ T2337]  console_flush_one_record (kernel/printk/printk.c:3268)
[   30.223854][ T2337]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   30.223855][ T2337]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   30.223861][ T2337]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   30.223863][ T2337]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   30.223865][ T2337]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   30.223867][ T2337]  ? 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)
[   30.223871][ T2337]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   30.223872][ T2337]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   30.223875][ T2337]  vprintk_emit (kernel/printk/printk.c:2479)
[   30.223878][ T2337]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   30.223880][ T2337]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   30.223883][ T2337]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   30.223887][ T2337]  _printk (kernel/printk/printk.c:2504)
[   30.223891][ T2337]  ? snapshot_read.cold (user.c:?)
[   30.223896][ T2337]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   30.223899][ T2337]  br_set_state (net/bridge/br_stp.c:57 (discriminator 2))
[   30.223904][ T2337]  br_init_port (net/bridge/br_stp_if.c:39)
[   30.223907][ T2337]  br_stp_enable_port (net/bridge/br_stp_if.c:93)
[   30.223909][ T2337]  br_device_event (net/bridge/br.c:120)
[   30.223911][ T2337]  ? packet_sendmsg_spkt (af_packet.c:?)
[   30.223913][ T2337]  ? nlmsg_notify (./include/net/netlink.h:1165 ./include/net/netlink.h:1184 net/netlink/af_netlink.c:2599)
[   30.223919][ T2337]  notifier_call_chain (kernel/notifier.c:85)
[   30.223925][ T2337]  __dev_notify_flags (net/core/dev.c:2313 net/core/dev.c:2327 net/core/dev.c:9853)
[   30.223930][ T2337]  ? netif_change_name (net/core/dev.c:1517)
[   30.223934][ T2337]  ? netif_set_allmulti (./include/net/netdev_lock.h:33)
[   30.223936][ T2337]  ? kernel_text_address (kernel/extable.c:125 kernel/extable.c:94)
[   30.223939][ T2337]  ? __kernel_text_address (kernel/extable.c:79)
[   30.223941][ T2337]  ? write_profile (profile.c:?)
[   30.223946][ T2337]  netif_change_flags (net/core/dev.c:9882)
[   30.223950][ T2337]  do_setlink.isra.0 (net/core/rtnetlink.c:3266 (discriminator 1))
[   30.223953][ T2337]  ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1))
[   30.223955][ T2337]  ? rtnl_link_get_size (net/core/rtnetlink.c:747)
[   30.223956][ T2337]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380)
[   30.223958][ T2337]  ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2))
[   30.223961][ T2337]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   30.223963][ T2337]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   30.223965][ T2337]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   30.223968][ T2337]  ? kasan_save_stack (mm/kasan/common.c:58)
[   30.223970][ T2337]  ? kasan_save_stack (mm/kasan/common.c:57)
[   30.223971][ T2337]  ? kasan_save_track (mm/kasan/common.c:78)
[   30.223972][ T2337]  ? __kasan_kmalloc (mm/kasan/common.c:398 mm/kasan/common.c:415)
[   30.223975][ T2337]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   30.223976][ T2337]  ? snd_ac97_proc_read_main (sound/pci/ac97/ac97_proc.c:320)
[   30.223979][ T2337]  ? ___sys_sendmsg (net/socket.c:2758)
[   30.223983][ T2337]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   30.223985][ T2337]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   30.223987][ T2337]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   30.223989][ T2337]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   30.223991][ T2337]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   30.223992][ T2337]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   30.223993][ T2337]  ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22))
[   30.223996][ T2337]  ? __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)
[   30.223998][ T2337]  ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1))
[   30.224000][ T2337]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   30.224004][ T2337]  ? ww_mutex_lock (kernel/locking/mutex.c:934)
[   30.224007][ T2337]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   30.224009][ T2337]  ? __rtnl_newlink (net/core/rtnetlink.c:4063)
[   30.224014][ T2337]  rtnl_newlink (net/core/rtnetlink.c:4215)
[   30.224020][ T2337]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   30.224021][ T2337]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   30.224026][ T2337]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   30.224028][ T2337]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   30.224030][ T2337]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   30.224032][ T2337]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   30.224035][ T2337]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   30.224037][ T2337]  rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   30.224041][ T2337]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   30.224042][ T2337]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   30.224046][ T2337]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   30.224048][ T2337]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   30.224052][ T2337]  netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   30.224054][ T2337]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   30.224056][ T2337]  ? netlink_ack (./include/linux/skbuff.h:2718)
[   30.224063][ T2337]  ? 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))
[   30.224065][ T2337]  ? 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))
[   30.224069][ T2337]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   30.224073][ T2337]  ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   30.224076][ T2337]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   30.224080][ T2337]  netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   30.224084][ T2337]  ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7))
[   30.224088][ T2337]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   30.224089][ T2337]  ? __import_iovec (lib/iov_iter.c:1358 lib/iov_iter.c:1373)
[   30.224095][ T2337]  __sock_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4))
[   30.224097][ T2337]  ____sys_sendmsg (net/socket.c:2713)
[   30.224100][ T2337]  ? copy_msghdr_from_user (net/socket.c:2650)
[   30.224102][ T2337]  ? sock_write_iter (net/socket.c:1269)
[   30.224104][ T2337]  ? move_addr_to_kernel (net/socket.c:258)
[   30.224111][ T2337]  ___sys_sendmsg (net/socket.c:2767)
[   30.224114][ T2337]  ? copy_msghdr_from_user (net/socket.c:2619)
[   30.224130][ T2337]  __sys_sendmsg (net/socket.c:2799)
[   30.224132][ T2337]  ? __sys_sendmsg_sock (net/socket.c:2780)
[   30.224139][ T2337]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   30.224142][ T2337]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   30.224145][ T2337]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   30.224147][ T2337]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   30.224149][ T2337] RIP: 0033:0x7fbfd77f154e
[   30.224151][ T2337] 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
[   30.224153][ T2337] RSP: 002b:00007ffd7bbfc1b0 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
[   30.224156][ T2337] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007fbfd77f154e
[   30.224157][ T2337] RDX: 0000000000000000 RSI: 00007ffd7bbfc260 RDI: 0000000000000005
[   30.224158][ T2337] RBP: 00007ffd7bbfc1c0 R08: 0000000000000000 R09: 0000000000000000
[   30.224158][ T2337] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a91c3eb
[   30.224159][ T2337] R13: 00000000004a1620 R14: 0000000000000000 R15: 00007ffd7bbfc920
| [   31.738285][ T2471] softirqs last disabled at (13220): br_device_event (./include/linux/spinlock.h:353 net/bridge/br.c:109)
| [   31.738287][ T2471] Preemption disabled at:
| [   31.738288][ T2471] 0x0
| [   31.738298][ T2471] Tainted: [W]=WARN
[   31.738299][ T2471] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   31.738301][ T2471] Call Trace:
[   31.738302][ T2471]  <TASK>
[   31.738304][ T2471]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   31.738310][ T2471]  __might_resched.cold (kernel/sched/core.c:9234)
[   31.738315][ T2471]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   31.738319][ T2471]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   31.738323][ T2471]  __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))
[   31.738325][ T2471]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   31.738332][ T2471]  ? 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)
[   31.738334][ T2471]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   31.738338][ T2471]  put_chars (drivers/char/virtio_console.c:1176)
[   31.738340][ T2471]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   31.738347][ T2471]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   31.738355][ T2471]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   31.738358][ T2471]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   31.738362][ T2471]  console_emit_next_record (kernel/printk/printk.c:3183)
[   31.738366][ T2471]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   31.738368][ T2471]  ? 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))
[   31.738371][ T2471]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   31.738374][ T2471]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   31.738378][ T2471]  console_flush_one_record (kernel/printk/printk.c:3268)
[   31.738382][ T2471]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   31.738384][ T2471]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   31.738389][ T2471]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   31.738392][ T2471]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   31.738394][ T2471]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   31.738396][ T2471]  ? 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)
[   31.738399][ T2471]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   31.738401][ T2471]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   31.738404][ T2471]  vprintk_emit (kernel/printk/printk.c:2479)
[   31.738407][ T2471]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   31.738408][ T2471]  ? mark_held_locks (kernel/locking/lockdep.c:4341)
[   31.738411][ T2471]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   31.738413][ T2471]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   31.738417][ T2471]  _printk (kernel/printk/printk.c:2504)
[   31.738421][ T2471]  ? snapshot_read.cold (user.c:?)
[   31.738428][ T2471]  br_set_state (net/bridge/br_stp.c:57 (discriminator 2))
[   31.738433][ T2471]  br_stp_disable_port (net/bridge/br_stp_if.c:106)
[   31.738436][ T2471]  br_device_event (net/bridge/br.c:111)
[   31.738438][ T2471]  ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:211 (discriminator 1) kernel/locking/spinlock.c:221 (discriminator 1))
[   31.738442][ T2471]  ? packet_sendmsg_spkt (af_packet.c:?)
[   31.738448][ T2471]  notifier_call_chain (kernel/notifier.c:85)
[   31.738454][ T2471]  __dev_notify_flags (net/core/dev.c:2313 net/core/dev.c:2327 net/core/dev.c:9855)
[   31.738459][ T2471]  ? netif_change_name (net/core/dev.c:1517)
[   31.738463][ T2471]  ? netif_set_allmulti (./include/net/netdev_lock.h:33)
[   31.738466][ T2471]  ? __kernel_text_address (kernel/extable.c:79)
[   31.738468][ T2471]  ? write_profile (profile.c:?)
[   31.738473][ T2471]  netif_change_flags (net/core/dev.c:9882)
[   31.738477][ T2471]  do_setlink.isra.0 (net/core/rtnetlink.c:3266 (discriminator 1))
[   31.738480][ T2471]  ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1))
[   31.738482][ T2471]  ? rtnl_link_get_size (net/core/rtnetlink.c:747)
[   31.738484][ T2471]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380)
[   31.738485][ T2471]  ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2))
[   31.738489][ T2471]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   31.738491][ T2471]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   31.738493][ T2471]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   31.738495][ T2471]  ? kasan_save_stack (mm/kasan/common.c:58)
[   31.738497][ T2471]  ? kasan_save_stack (mm/kasan/common.c:57)
[   31.738502][ T2471]  ? kasan_save_track (mm/kasan/common.c:78)
[   31.738504][ T2471]  ? __kasan_kmalloc (mm/kasan/common.c:398 mm/kasan/common.c:415)
[   31.738506][ T2471]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   31.738508][ T2471]  ? snd_ac97_proc_read_main (sound/pci/ac97/ac97_proc.c:320)
[   31.738511][ T2471]  ? ___sys_sendmsg (net/socket.c:2758)
[   31.738514][ T2471]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   31.738516][ T2471]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   31.738519][ T2471]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   31.738521][ T2471]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   31.738522][ T2471]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   31.738523][ T2471]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   31.738525][ T2471]  ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22))
[   31.738527][ T2471]  ? __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)
[   31.738529][ T2471]  ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1))
[   31.738530][ T2471]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   31.738534][ T2471]  ? ww_mutex_lock (kernel/locking/mutex.c:934)
[   31.738537][ T2471]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   31.738539][ T2471]  ? __rtnl_newlink (net/core/rtnetlink.c:4063)
[   31.738545][ T2471]  rtnl_newlink (net/core/rtnetlink.c:4215)
[   31.738550][ T2471]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   31.738552][ T2471]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   31.738556][ T2471]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   31.738558][ T2471]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   31.738560][ T2471]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   31.738562][ T2471]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   31.738566][ T2471]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   31.738568][ T2471]  rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   31.738571][ T2471]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   31.738572][ T2471]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   31.738577][ T2471]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   31.738578][ T2471]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   31.738582][ T2471]  netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   31.738585][ T2471]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   31.738588][ T2471]  ? netlink_ack (./include/linux/skbuff.h:2718)
[   31.738594][ T2471]  ? 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))
[   31.738596][ T2471]  ? 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))
[   31.738601][ T2471]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   31.738605][ T2471]  ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   31.738607][ T2471]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   31.738611][ T2471]  netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   31.738615][ T2471]  ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7))
[   31.738619][ T2471]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   31.738621][ T2471]  ? __import_iovec (lib/iov_iter.c:1358 lib/iov_iter.c:1373)
[   31.738626][ T2471]  __sock_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4))
[   31.738629][ T2471]  ____sys_sendmsg (net/socket.c:2713)
[   31.738631][ T2471]  ? copy_msghdr_from_user (net/socket.c:2650)
[   31.738633][ T2471]  ? sock_write_iter (net/socket.c:1269)
[   31.738635][ T2471]  ? move_addr_to_kernel (net/socket.c:258)
[   31.738642][ T2471]  ___sys_sendmsg (net/socket.c:2767)
[   31.738645][ T2471]  ? copy_msghdr_from_user (net/socket.c:2619)
[   31.738661][ T2471]  __sys_sendmsg (net/socket.c:2799)
[   31.738664][ T2471]  ? __sys_sendmsg_sock (net/socket.c:2780)
[   31.738670][ T2471]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   31.738673][ T2471]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   31.738676][ T2471]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   31.738679][ T2471]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   31.738681][ T2471] RIP: 0033:0x7f9519ad354e
[   31.738683][ T2471] 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
[   31.738685][ T2471] RSP: 002b:00007ffdf546d1e0 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
[   31.738687][ T2471] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f9519ad354e
[   31.738689][ T2471] RDX: 0000000000000000 RSI: 00007ffdf546d290 RDI: 0000000000000005
[   31.738690][ T2471] RBP: 00007ffdf546d1f0 R08: 0000000000000000 R09: 0000000000000000
[   31.738690][ T2471] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a91c3ed
[   31.738691][ T2471] R13: 00000000004a1620 R14: 0000000000000000 R15: 00007ffdf546d950
| [   32.915719][   T38] softirqs last disabled at (198938): br_port_carrier_check (./include/linux/spinlock.h:353 net/bridge/br_if.c:87)
| [   32.915722][   T38] Preemption disabled at:
| [   32.915722][   T38] 0x0
| [   32.915732][   T38] Tainted: [W]=WARN
[   32.915733][   T38] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   32.915735][   T38] Workqueue: events_unbound linkwatch_event
[   32.915738][   T38] Call Trace:
[   32.915739][   T38]  <TASK>
[   32.915741][   T38]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   32.915748][   T38]  __might_resched.cold (kernel/sched/core.c:9234)
[   32.915752][   T38]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   32.915756][   T38]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   32.915761][   T38]  __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))
[   32.915763][   T38]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   32.915769][   T38]  ? 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)
[   32.915772][   T38]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   32.915776][   T38]  put_chars (drivers/char/virtio_console.c:1176)
[   32.915778][   T38]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   32.915781][   T38]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   32.915784][   T38]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   32.915787][   T38]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   32.915791][   T38]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   32.915795][   T38]  ? mark_usage (kernel/locking/lockdep.c:4690)
[   32.915797][   T38]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   32.915799][   T38]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   32.915803][   T38]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   32.915805][   T38]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   32.915809][   T38]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   32.915814][   T38]  console_emit_next_record (kernel/printk/printk.c:3183)
[   32.915818][   T38]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   32.915819][   T38]  ? 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))
[   32.915823][   T38]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   32.915825][   T38]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   32.915829][   T38]  console_flush_one_record (kernel/printk/printk.c:3268)
[   32.915833][   T38]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   32.915835][   T38]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   32.915840][   T38]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   32.915843][   T38]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   32.915845][   T38]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   32.915847][   T38]  ? 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)
[   32.915850][   T38]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   32.915852][   T38]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   32.915855][   T38]  vprintk_emit (kernel/printk/printk.c:2479)
[   32.915858][   T38]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   32.915860][   T38]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   32.915862][   T38]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   32.915866][   T38]  _printk (kernel/printk/printk.c:2504)
[   32.915869][   T38]  ? snapshot_read.cold (user.c:?)
[   32.915875][   T38]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   32.915878][   T38]  br_set_state (net/bridge/br_stp.c:57 (discriminator 2))
[   32.915883][   T38]  br_init_port (net/bridge/br_stp_if.c:39)
[   32.915885][   T38]  br_stp_enable_port (net/bridge/br_stp_if.c:93)
[   32.915887][   T38]  br_port_carrier_check (net/bridge/br_if.c:90)
[   32.915891][   T38]  br_device_event (net/bridge/br.c:101)
[   32.915894][   T38]  ? packet_sendmsg_spkt (af_packet.c:?)
[   32.915896][   T38]  ? nlmsg_notify (./include/net/netlink.h:1165 ./include/net/netlink.h:1184 net/netlink/af_netlink.c:2599)
[   32.915903][   T38]  notifier_call_chain (kernel/notifier.c:85)
[   32.915909][   T38]  netif_state_change (net/core/dev.c:1625)
[   32.915914][   T38]  ? call_netdevice_notifiers_info (./include/net/net_namespace.h:422 (discriminator 7))
[   32.915918][   T38]  ? linkwatch_do_dev (net/core/link_watch.c:182 net/core/link_watch.c:166)
[   32.915920][   T38]  __linkwatch_run_queue (net/core/link_watch.c:240)
[   32.915924][   T38]  ? linkwatch_do_dev (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   32.915926][   T38]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   32.915930][   T38]  linkwatch_event (net/core/link_watch.c:314 (discriminator 11))
[   32.915933][   T38]  ? __linkwatch_run_queue (net/core/link_watch.c:213)
[   32.915936][   T38]  process_one_work (kernel/workqueue.c:3387)
[   32.915943][   T38]  ? __queue_delayed_work (kernel/workqueue.c:2622)
[   32.915946][   T38]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   32.915953][   T38]  worker_thread (kernel/workqueue.c:3470 kernel/workqueue.c:3551)
[   32.915960][   T38]  ? rescuer_thread (./include/linux/list.h:419 (discriminator 3))
[   32.915963][   T38]  kthread (kernel/kthread.c:436)
[   32.915965][   T38]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[   32.915968][   T38]  ? kthread_affine_preferred (kernel/kthread.c:857)
[   32.915971][   T38]  ret_from_fork (arch/x86/kernel/process.c:158)
[   32.915975][   T38]  ? arch_exit_to_user_mode_prepare.isra.0 (arch/x86/entry/vdso/vma.c:80 (discriminator 1))
[   32.915978][   T38]  ? __switch_to (arch/x86/kernel/process_64.c:403 arch/x86/kernel/process_64.c:663)
[   32.915982][   T38]  ? kthread_affine_preferred (kernel/kthread.c:857)
[   32.915985][   T38]  ret_from_fork_asm (arch/x86/entry/entry_64.S:245)
| [   33.927598][ T2674] softirqs last disabled at (25352): br_device_event (./include/linux/spinlock.h:353 net/bridge/br.c:109)
| [   33.927600][ T2674] Preemption disabled at:
| [   33.927601][ T2674] 0x0
| [   33.927612][ T2674] Tainted: [W]=WARN
[   33.927613][ T2674] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   33.927614][ T2674] Call Trace:
[   33.927616][ T2674]  <TASK>
[   33.927617][ T2674]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   33.927623][ T2674]  __might_resched.cold (kernel/sched/core.c:9234)
[   33.927628][ T2674]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   33.927632][ T2674]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   33.927636][ T2674]  __kmalloc_noprof (./include/linux/sched/mm.h:322 (discriminator 2) mm/slub.c:4636 (discriminator 2) mm/slub.c:4974 (discriminator 2) mm/slub.c:5413 (discriminator 2) mm/slub.c:5439 (discriminator 2))
[   33.927638][ T2674]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   33.927645][ T2674]  ? do_raw_spin_unlock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:32 ./include/asm-generic/qspinlock.h:58 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141)
[   33.927648][ T2674]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   33.927651][ T2674]  put_chars (drivers/char/virtio_console.c:1176)
[   33.927653][ T2674]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   33.927660][ T2674]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   33.927667][ T2674]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   33.927670][ T2674]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   33.927675][ T2674]  console_emit_next_record (kernel/printk/printk.c:3183)
[   33.927679][ T2674]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   33.927680][ T2674]  ? console_flush_one_record (./include/linux/rcupdate.h:314 (discriminator 2) ./include/linux/srcu.h:439 (discriminator 2) kernel/printk/printk.c:291 (discriminator 2) kernel/printk/printk.c:3246 (discriminator 2))
[   33.927684][ T2674]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   33.927686][ T2674]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   33.927690][ T2674]  console_flush_one_record (kernel/printk/printk.c:3268)
[   33.927695][ T2674]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   33.927696][ T2674]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   33.927702][ T2674]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   33.927704][ T2674]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   33.927706][ T2674]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   33.927708][ T2674]  ? lock_acquire (./include/linux/srcutree.h:374 ./include/linux/srcu.h:541 ./include/linux/srcu.h:645 ./include/trace/events/lock.h:23 ./include/trace/events/lock.h:23 kernel/locking/lockdep.c:5871)
[   33.927712][ T2674]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   33.927713][ T2674]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   33.927716][ T2674]  vprintk_emit (kernel/printk/printk.c:2479)
[   33.927719][ T2674]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   33.927720][ T2674]  ? mark_held_locks (kernel/locking/lockdep.c:4341)
[   33.927723][ T2674]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   33.927725][ T2674]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   33.927729][ T2674]  _printk (kernel/printk/printk.c:2504)
[   33.927733][ T2674]  ? snapshot_read.cold (user.c:?)
[   33.927740][ T2674]  br_set_state (net/bridge/br_stp.c:57 (discriminator 2))
[   33.927745][ T2674]  br_stp_disable_port (net/bridge/br_stp_if.c:106)
[   33.927748][ T2674]  br_device_event (net/bridge/br.c:111)
[   33.927750][ T2674]  ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:211 (discriminator 1) kernel/locking/spinlock.c:221 (discriminator 1))
[   33.927754][ T2674]  ? packet_sendmsg_spkt (af_packet.c:?)
[   33.927759][ T2674]  notifier_call_chain (kernel/notifier.c:85)
[   33.927765][ T2674]  __dev_notify_flags (net/core/dev.c:2313 net/core/dev.c:2327 net/core/dev.c:9855)
[   33.927770][ T2674]  ? netif_change_name (net/core/dev.c:1517)
[   33.927774][ T2674]  ? netif_set_allmulti (./include/net/netdev_lock.h:33)
[   33.927777][ T2674]  ? __kernel_text_address (kernel/extable.c:79)
[   33.927780][ T2674]  ? write_profile (profile.c:?)
[   33.927784][ T2674]  netif_change_flags (net/core/dev.c:9882)
[   33.927788][ T2674]  do_setlink.isra.0 (net/core/rtnetlink.c:3266 (discriminator 1))
[   33.927791][ T2674]  ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1))
[   33.927794][ T2674]  ? rtnl_link_get_size (net/core/rtnetlink.c:747)
[   33.927795][ T2674]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380)
[   33.927797][ T2674]  ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2))
[   33.927800][ T2674]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   33.927802][ T2674]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   33.927804][ T2674]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   33.927806][ T2674]  ? kasan_save_stack (mm/kasan/common.c:58)
[   33.927809][ T2674]  ? kasan_save_stack (mm/kasan/common.c:57)
[   33.927810][ T2674]  ? kasan_save_track (mm/kasan/common.c:78)
[   33.927811][ T2674]  ? __kasan_kmalloc (mm/kasan/common.c:398 mm/kasan/common.c:415)
[   33.927813][ T2674]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   33.927815][ T2674]  ? snd_ac97_proc_read_main (sound/pci/ac97/ac97_proc.c:320)
[   33.927818][ T2674]  ? ___sys_sendmsg (net/socket.c:2758)
[   33.927822][ T2674]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   33.927824][ T2674]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   33.927826][ T2674]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   33.927828][ T2674]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   33.927830][ T2674]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   33.927831][ T2674]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   33.927832][ T2674]  ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22))
[   33.927835][ T2674]  ? __mutex_lock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:3188 kernel/locking/mutex.c:89 kernel/locking/mutex.c:134 kernel/locking/mutex.c:649 kernel/locking/mutex.c:821)
[   33.927836][ T2674]  ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1))
[   33.927838][ T2674]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   33.927841][ T2674]  ? ww_mutex_lock (kernel/locking/mutex.c:934)
[   33.927845][ T2674]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   33.927847][ T2674]  ? __rtnl_newlink (net/core/rtnetlink.c:4063)
[   33.927852][ T2674]  rtnl_newlink (net/core/rtnetlink.c:4215)
[   33.927858][ T2674]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   33.927860][ T2674]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   33.927864][ T2674]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   33.927866][ T2674]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   33.927868][ T2674]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   33.927870][ T2674]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   33.927874][ T2674]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   33.927876][ T2674]  rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   33.927879][ T2674]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   33.927880][ T2674]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   33.927885][ T2674]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   33.927886][ T2674]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   33.927890][ T2674]  netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   33.927893][ T2674]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   33.927896][ T2674]  ? netlink_ack (./include/linux/skbuff.h:2718)
[   33.927902][ T2674]  ? netlink_deliver_tap (./include/linux/rcupdate.h:319 (discriminator 2) ./include/linux/rcupdate.h:880 (discriminator 2) ./include/net/netns/generic.h:48 (discriminator 2) net/netlink/af_netlink.c:334 (discriminator 2))
[   33.927904][ T2674]  ? netlink_deliver_tap (./include/linux/rcupdate.h:319 (discriminator 2) ./include/linux/rcupdate.h:880 (discriminator 2) net/netlink/af_netlink.c:341 (discriminator 2))
[   33.927909][ T2674]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   33.927912][ T2674]  ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   33.927915][ T2674]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   33.927919][ T2674]  netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   33.927923][ T2674]  ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7))
[   33.927927][ T2674]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   33.927929][ T2674]  ? __import_iovec (lib/iov_iter.c:1358 lib/iov_iter.c:1373)
[   33.927934][ T2674]  __sock_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4))
[   33.927936][ T2674]  ____sys_sendmsg (net/socket.c:2713)
[   33.927939][ T2674]  ? copy_msghdr_from_user (net/socket.c:2650)
[   33.927941][ T2674]  ? sock_write_iter (net/socket.c:1269)
[   33.927942][ T2674]  ? move_addr_to_kernel (net/socket.c:258)
[   33.927950][ T2674]  ___sys_sendmsg (net/socket.c:2767)
[   33.927952][ T2674]  ? copy_msghdr_from_user (net/socket.c:2619)
[   33.927968][ T2674]  __sys_sendmsg (net/socket.c:2799)
[   33.927971][ T2674]  ? __sys_sendmsg_sock (net/socket.c:2780)
[   33.927977][ T2674]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   33.927980][ T2674]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   33.927983][ T2674]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   33.927986][ T2674]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   33.927988][ T2674] RIP: 0033:0x7f78895a754e
[   33.927990][ T2674] Code: 4d 89 d8 e8 b4 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 03 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 b4 bd 00 00       	call   0xbdbc
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 03 ff ff ff       	call   0xffffffffffffff3c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 03 ff ff ff       	call   0xffffffffffffff12
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[   33.927992][ T2674] RSP: 002b:00007ffe304df7d0 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
[   33.927995][ T2674] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f78895a754e
[   33.927996][ T2674] RDX: 0000000000000000 RSI: 00007ffe304df880 RDI: 0000000000000005
[   33.927997][ T2674] RBP: 00007ffe304df7e0 R08: 0000000000000000 R09: 0000000000000000
[   33.927998][ T2674] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a91c3ef
[   33.927998][ T2674] R13: 00000000004a1620 R14: 0000000000000000 R15: 00007ffe304dff40
| [   35.188456][ T2777] softirqs last disabled at (20276): __alloc_skb (./include/linux/bottom_half.h:20 (discriminator 2) net/core/skbuff.c:697 (discriminator 2))
| [   35.188458][ T2777] Preemption disabled at:
| [   35.188459][ T2777] vprintk_emit (kernel/printk/printk.c:2471)
| [   35.188467][ T2777] Tainted: [W]=WARN
[   35.188467][ T2777] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   35.188469][ T2777] Call Trace:
[   35.188471][ T2777]  <TASK>
[   35.188472][ T2777]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   35.188478][ T2777]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   35.188479][ T2777]  __might_resched.cold (kernel/sched/core.c:9234)
[   35.188484][ T2777]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   35.188488][ T2777]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   35.188492][ T2777]  __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))
[   35.188494][ T2777]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   35.188500][ T2777]  ? 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)
[   35.188503][ T2777]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   35.188507][ T2777]  put_chars (drivers/char/virtio_console.c:1176)
[   35.188509][ T2777]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   35.188516][ T2777]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   35.188522][ T2777]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   35.188529][ T2777]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   35.188532][ T2777]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   35.188535][ T2777]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   35.188539][ T2777]  console_emit_next_record (kernel/printk/printk.c:3183)
[   35.188543][ T2777]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   35.188545][ T2777]  ? 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))
[   35.188549][ T2777]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   35.188550][ T2777]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   35.188554][ T2777]  console_flush_one_record (kernel/printk/printk.c:3268)
[   35.188559][ T2777]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   35.188560][ T2777]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   35.188566][ T2777]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   35.188568][ T2777]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   35.188570][ T2777]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   35.188572][ T2777]  ? 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)
[   35.188576][ T2777]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   35.188577][ T2777]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   35.188580][ T2777]  vprintk_emit (kernel/printk/printk.c:2479)
[   35.188583][ T2777]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   35.188584][ T2777]  ? rtnl_newlink (net/core/rtnetlink.c:4215)
[   35.188586][ T2777]  ? netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   35.188589][ T2777]  ? netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   35.188591][ T2777]  ? netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   35.188592][ T2777]  ? __sock_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4))
[   35.188595][ T2777]  ? ____sys_sendmsg (net/socket.c:2713)
[   35.188596][ T2777]  ? ___sys_sendmsg (net/socket.c:2767)
[   35.188600][ T2777]  _printk (kernel/printk/printk.c:2504)
[   35.188603][ T2777]  ? snapshot_read.cold (user.c:?)
[   35.188608][ T2777]  ? netdev_name (./include/linux/netdevice.h:5709 (discriminator 1))
[   35.188612][ T2777]  ? __netdev_printk (net/core/dev.c:13148 (discriminator 2))
[   35.188615][ T2777]  netdev_info (net/core/dev.c:13195 (discriminator 3))
[   35.188618][ T2777]  ? netdev_notice (net/core/dev.c:13194)
[   35.188622][ T2777]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   35.188624][ T2777]  ? __up_read (kernel/locking/rwsem.c:1397 (discriminator 1))
[   35.188627][ T2777]  ? down_write_nested (kernel/locking/rwsem.c:1759)
[   35.188628][ T2777]  ? 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)
[   35.188631][ T2777]  netif_set_allmulti.cold (net/core/dev.c:9731 (discriminator 3))
[   35.188635][ T2777]  dev_set_allmulti (net/core/dev_api.c:315)
[   35.188639][ T2777]  del_nbp (net/bridge/br_if.c:253 net/bridge/br_if.c:341)
[   35.188645][ T2777]  br_del_if (net/bridge/br_if.c:732)
[   35.188647][ T2777]  ? rtnl_is_locked (net/core/rtnetlink.c:169)
[   35.188650][ T2777]  do_set_master (net/core/rtnetlink.c:3055)
[   35.188653][ T2777]  do_setlink.isra.0 (net/core/rtnetlink.c:3273 (discriminator 1))
[   35.188657][ T2777]  ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1))
[   35.188660][ T2777]  ? rtnl_link_get_size (net/core/rtnetlink.c:747)
[   35.188662][ T2777]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380)
[   35.188664][ T2777]  ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2))
[   35.188668][ T2777]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   35.188670][ T2777]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   35.188671][ T2777]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   35.188674][ T2777]  ? kasan_save_stack (mm/kasan/common.c:58)
[   35.188676][ T2777]  ? kasan_save_stack (mm/kasan/common.c:57)
[   35.188677][ T2777]  ? kasan_save_track (mm/kasan/common.c:78)
[   35.188679][ T2777]  ? __kasan_kmalloc (mm/kasan/common.c:398 mm/kasan/common.c:415)
[   35.188681][ T2777]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   35.188683][ T2777]  ? snd_ac97_proc_read_main (sound/pci/ac97/ac97_proc.c:320)
[   35.188685][ T2777]  ? ___sys_sendmsg (net/socket.c:2758)
[   35.188688][ T2777]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   35.188690][ T2777]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   35.188693][ T2777]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   35.188694][ T2777]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   35.188696][ T2777]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   35.188697][ T2777]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   35.188699][ T2777]  ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22))
[   35.188701][ T2777]  ? __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)
[   35.188704][ T2777]  ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1))
[   35.188706][ T2777]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   35.188709][ T2777]  ? ww_mutex_lock (kernel/locking/mutex.c:934)
[   35.188710][ T2777]  ? nla_get_range_signed (lib/nlattr.c:270)
[   35.188715][ T2777]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   35.188717][ T2777]  ? __rtnl_newlink (net/core/rtnetlink.c:4063)
[   35.188722][ T2777]  rtnl_newlink (net/core/rtnetlink.c:4215)
[   35.188728][ T2777]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   35.188730][ T2777]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   35.188734][ T2777]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   35.188736][ T2777]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   35.188738][ T2777]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   35.188740][ T2777]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   35.188744][ T2777]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   35.188746][ T2777]  rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   35.188749][ T2777]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   35.188750][ T2777]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   35.188755][ T2777]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   35.188756][ T2777]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   35.188760][ T2777]  netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   35.188762][ T2777]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   35.188765][ T2777]  ? netlink_ack (./include/linux/skbuff.h:2718)
[   35.188771][ T2777]  ? 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))
[   35.188773][ T2777]  ? 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))
[   35.188778][ T2777]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   35.188781][ T2777]  ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   35.188784][ T2777]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   35.188788][ T2777]  netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   35.188792][ T2777]  ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7))
[   35.188796][ T2777]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   35.188797][ T2777]  ? __import_iovec (lib/iov_iter.c:1358 lib/iov_iter.c:1373)
[   35.188803][ T2777]  __sock_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4))
[   35.188806][ T2777]  ____sys_sendmsg (net/socket.c:2713)
[   35.188808][ T2777]  ? copy_msghdr_from_user (net/socket.c:2650)
[   35.188810][ T2777]  ? sock_write_iter (net/socket.c:1269)
[   35.188812][ T2777]  ? move_addr_to_kernel (net/socket.c:258)
[   35.188819][ T2777]  ___sys_sendmsg (net/socket.c:2767)
[   35.188822][ T2777]  ? copy_msghdr_from_user (net/socket.c:2619)
[   35.188838][ T2777]  __sys_sendmsg (net/socket.c:2799)
[   35.188841][ T2777]  ? __sys_sendmsg_sock (net/socket.c:2780)
[   35.188847][ T2777]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   35.188850][ T2777]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   35.188853][ T2777]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   35.188856][ T2777]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   35.188858][ T2777] RIP: 0033:0x7f3dc89af54e
[   35.188861][ T2777] 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
[   35.188863][ T2777] RSP: 002b:00007fff4de7f7a0 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
[   35.188865][ T2777] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f3dc89af54e
[   35.188867][ T2777] RDX: 0000000000000000 RSI: 00007fff4de7f850 RDI: 0000000000000005
[   35.188868][ T2777] RBP: 00007fff4de7f7b0 R08: 0000000000000000 R09: 0000000000000000
[   35.188868][ T2777] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a91c3f0


Finger prints:
__alloc_skb:vprintk_emit:dump_stack_lvl:__kmalloc_noprof:put_chars
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
__irq_exit_rcu:vprintk_emit:dump_stack_lvl:__kmalloc_noprof:put_chars