======================================
| [   11.419235][  T237] softirqs last disabled at (23121): __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767)
| [   11.419237][  T237] Preemption disabled at:
| [   11.419238][  T237] vprintk_emit (kernel/printk/printk.c:2471)
| [   11.419247][  T237] Tainted: [W]=WARN
[   11.419248][  T237] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   11.419250][  T237] Call Trace:
[   11.419252][  T237]  <TASK>
[   11.419254][  T237]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   11.419259][  T237]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   11.419262][  T237]  __might_resched.cold (kernel/sched/core.c:9234)
[   11.419266][  T237]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   11.419270][  T237]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   11.419276][  T237]  __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))
[   11.419278][  T237]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   11.419283][  T237]  ? 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)
[   11.419286][  T237]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   11.419289][  T237]  put_chars (drivers/char/virtio_console.c:1176)
[   11.419292][  T237]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   11.419296][  T237]  ? validate_chain (kernel/locking/lockdep.c:159 kernel/locking/lockdep.c:191 kernel/locking/lockdep.c:3928)
[   11.419300][  T237]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   11.419303][  T237]  ? mark_usage (kernel/locking/lockdep.c:4690)
[   11.419305][  T237]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   11.419306][  T237]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   11.419310][  T237]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   11.419312][  T237]  ? console_emit_next_record (kernel/printk/printk.c:3095 (discriminator 2) kernel/printk/printk.c:3182 (discriminator 2))
[   11.419315][  T237]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   11.419320][  T237]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   11.419323][  T237]  console_emit_next_record (kernel/printk/printk.c:3183)
[   11.419327][  T237]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   11.419329][  T237]  ? 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))
[   11.419332][  T237]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   11.419335][  T237]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   11.419339][  T237]  console_flush_one_record (kernel/printk/printk.c:3268)
[   11.419343][  T237]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   11.419345][  T237]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   11.419346][  T237]  ? insn_get_immediate.part.0 (./arch/x86/include/asm/insn.h:30 arch/x86/lib/insn.c:570 arch/x86/lib/insn.c:678)
[   11.419353][  T237]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   11.419355][  T237]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   11.419357][  T237]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   11.419360][  T237]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   11.419363][  T237]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   11.419365][  T237]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   11.419369][  T237]  vprintk_emit (kernel/printk/printk.c:2479)
[   11.419373][  T237]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   11.419375][  T237]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   11.419377][  T237]  ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:211 (discriminator 1) kernel/locking/spinlock.c:221 (discriminator 1))
[   11.419381][  T237]  ? mark_held_locks (kernel/locking/lockdep.c:4341)
[   11.419384][  T237]  _printk (kernel/printk/printk.c:2504)
[   11.419388][  T237]  ? snapshot_read.cold (user.c:?)
[   11.419392][  T237]  ? br_multicast_flood (??:?) bridge
[   11.419405][  T237]  ? do_setlink.isra.0 (net/core/rtnetlink.c:3273 (discriminator 1))
[   11.419406][  T237]  ? rtnl_newlink (net/core/rtnetlink.c:4215)
[   11.419408][  T237]  ? rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   11.419412][  T237] br_set_state (net/bridge/br_stp.c:57 (discriminator 2)) bridge
[   11.419423][  T237] br_init_port (net/bridge/br_stp_if.c:39) bridge
[   11.419431][  T237] new_nbp (net/bridge/br_if.c:449) bridge
[   11.419440][  T237] br_add_if (net/bridge/br_if.c:592) bridge
[   11.419448][  T237]  ? is_bpf_text_address (./include/linux/rcupdate.h:882 kernel/bpf/core.c:751)
[   11.419452][  T237]  ? kernel_text_address (kernel/extable.c:125 kernel/extable.c:94)
[   11.419455][  T237]  ? __kernel_text_address (kernel/extable.c:79)
[   11.419459][  T237]  do_set_master (net/core/rtnetlink.c:3071)
[   11.419464][  T237]  do_setlink.isra.0 (net/core/rtnetlink.c:3273 (discriminator 1))
[   11.419467][  T237]  ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1))
[   11.419470][  T237]  ? rtnl_link_get_size (net/core/rtnetlink.c:747)
[   11.419471][  T237]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380)
[   11.419474][  T237]  ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2))
[   11.419477][  T237]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   11.419480][  T237]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   11.419482][  T237]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   11.419484][  T237]  ? kasan_save_stack (mm/kasan/common.c:58)
[   11.419488][  T237]  ? kasan_save_stack (mm/kasan/common.c:57)
[   11.419489][  T237]  ? kasan_save_track (mm/kasan/common.c:78)
[   11.419492][  T237]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   11.419494][  T237]  ? netlink_seq_next (net/netlink/af_netlink.c:2685)
[   11.419497][  T237]  ? ___sys_sendmsg (net/socket.c:2757)
[   11.419502][  T237]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   11.419504][  T237]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   11.419508][  T237]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   11.419510][  T237]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   11.419512][  T237]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   11.419514][  T237]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   11.419516][  T237]  ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22))
[   11.419520][  T237]  ? __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)
[   11.419522][  T237]  ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1))
[   11.419524][  T237]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   11.419527][  T237]  ? ww_mutex_lock (kernel/locking/mutex.c:934)
[   11.419529][  T237]  ? nla_get_range_signed (lib/nlattr.c:270)
[   11.419534][  T237]  ? __rtnl_newlink (net/core/rtnetlink.c:4063)
[   11.419539][  T237]  rtnl_newlink (net/core/rtnetlink.c:4215)
[   11.419544][  T237]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   11.419546][  T237]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   11.419551][  T237]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   11.419553][  T237]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   11.419555][  T237]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   11.419557][  T237]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   11.419560][  T237]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   11.419562][  T237]  rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   11.419565][  T237]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   11.419567][  T237]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   11.419571][  T237]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   11.419573][  T237]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   11.419577][  T237]  netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   11.419578][  T237]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   11.419581][  T237]  ? netlink_ack (./include/linux/skbuff.h:2718)
[   11.419587][  T237]  ? 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))
[   11.419589][  T237]  ? 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))
[   11.419593][  T237]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   11.419597][  T237]  ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   11.419600][  T237]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   11.419604][  T237]  netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   11.419608][  T237]  ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7))
[   11.419611][  T237]  ? __might_fault (mm/memory.c:7482 (discriminator 5))
[   11.419617][  T237]  ____sys_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4) net/socket.c:2713 (discriminator 4))
[   11.419619][  T237]  ? copy_msghdr_from_user (net/socket.c:2650)
[   11.419621][  T237]  ? get_timestamp.constprop.0 (./include/linux/netdevice.h:5399)
[   11.419623][  T237]  ? move_addr_to_kernel (net/socket.c:258)
[   11.419630][  T237]  ___sys_sendmsg (net/socket.c:2767)
[   11.419633][  T237]  ? copy_msghdr_from_user (net/socket.c:2619)
[   11.419649][  T237]  __sys_sendmsg (net/socket.c:2799)
[   11.419652][  T237]  ? __sys_sendmsg_sock (net/socket.c:2780)
[   11.419658][  T237]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   11.419662][  T237]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   11.419663][  T237]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   11.419666][  T237]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   11.419669][  T237] RIP: 0033:0x7f099eea954e
[   11.419673][  T237] 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
[   11.419674][  T237] RSP: 002b:00007ffc063f53d0 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
[   11.419677][  T237] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007f099eea954e
[   11.419679][  T237] RDX: 0000000000000000 RSI: 00007ffc063f5480 RDI: 0000000000000005
[   11.419680][  T237] RBP: 00007ffc063f53e0 R08: 0000000000000000 R09: 0000000000000000
[   11.419681][  T237] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a916191
[   11.419681][  T237] R13: 00000000004a1620 R14: 0000000000000000 R15: 00007ffc063f5b40
| [   21.775619][   T38] softirqs last disabled at (76298): br_port_carrier_check (./include/linux/spinlock.h:353 net/bridge/br_if.c:87) bridge
| [   21.775627][   T38] Preemption disabled at:
| [   21.775627][   T38] 0x0
| [   21.775638][   T38] Tainted: [W]=WARN
[   21.775638][   T38] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   21.775640][   T38] Workqueue: events_unbound linkwatch_event
[   21.775644][   T38] Call Trace:
[   21.775646][   T38]  <TASK>
[   21.775647][   T38]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   21.775654][   T38]  __might_resched.cold (kernel/sched/core.c:9234)
[   21.775658][   T38]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   21.775662][   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)
[   21.775668][   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))
[   21.775670][   T38]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   21.775676][   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)
[   21.775678][   T38]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   21.775682][   T38]  put_chars (drivers/char/virtio_console.c:1176)
[   21.775685][   T38]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   21.775688][   T38]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   21.775692][   T38]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   21.775695][   T38]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   21.775699][   T38]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   21.775701][   T38]  ? mark_usage (kernel/locking/lockdep.c:4690)
[   21.775703][   T38]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   21.775705][   T38]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   21.775709][   T38]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   21.775710][   T38]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   21.775715][   T38]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   21.775719][   T38]  console_emit_next_record (kernel/printk/printk.c:3183)
[   21.775723][   T38]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   21.775725][   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))
[   21.775728][   T38]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   21.775731][   T38]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   21.775735][   T38]  console_flush_one_record (kernel/printk/printk.c:3268)
[   21.775739][   T38]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   21.775741][   T38]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   21.775746][   T38]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   21.775749][   T38]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   21.775751][   T38]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   21.775754][   T38]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   21.775757][   T38]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   21.775759][   T38]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   21.775763][   T38]  vprintk_emit (kernel/printk/printk.c:2479)
[   21.775768][   T38]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   21.775771][   T38]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   21.775773][   T38]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   21.775777][   T38]  _printk (kernel/printk/printk.c:2504)
[   21.775781][   T38]  ? snapshot_read.cold (user.c:?)
[   21.775786][   T38]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   21.775790][   T38] br_set_state (net/bridge/br_stp.c:57 (discriminator 2)) bridge
[   21.775801][   T38] br_init_port (net/bridge/br_stp_if.c:39) bridge
[   21.775809][   T38] br_stp_enable_port (net/bridge/br_stp_if.c:93) bridge
[   21.775816][   T38] br_port_carrier_check (net/bridge/br_if.c:90) bridge
[   21.775825][   T38] br_device_event (net/bridge/br.c:101) bridge
[   21.775834][   T38]  ? _sub_I_65535_1+0x4d0/0x4d0 stp
[   21.775836][   T38]  ? nlmsg_notify (./include/net/netlink.h:1165 ./include/net/netlink.h:1184 net/netlink/af_netlink.c:2599)
[   21.775843][   T38]  notifier_call_chain (kernel/notifier.c:85)
[   21.775849][   T38]  netif_state_change (net/core/dev.c:1625)
[   21.775853][   T38]  ? call_netdevice_notifiers_info (./include/net/net_namespace.h:422 (discriminator 7))
[   21.775858][   T38]  ? linkwatch_do_dev (net/core/link_watch.c:182 net/core/link_watch.c:166)
[   21.775861][   T38]  __linkwatch_run_queue (net/core/link_watch.c:240)
[   21.775864][   T38]  ? linkwatch_do_dev (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   21.775866][   T38]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   21.775871][   T38]  linkwatch_event (net/core/link_watch.c:314 (discriminator 11))
[   21.775873][   T38]  ? __linkwatch_run_queue (./include/linux/list.h:577)
[   21.775877][   T38]  process_one_work (kernel/workqueue.c:3387)
[   21.775883][   T38]  ? __queue_delayed_work (kernel/workqueue.c:2622)
[   21.775886][   T38]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   21.775894][   T38]  worker_thread (kernel/workqueue.c:3470 kernel/workqueue.c:3551)
[   21.775901][   T38]  ? rescuer_thread (./include/linux/list.h:419 (discriminator 3))
[   21.775903][   T38]  kthread (kernel/kthread.c:436)
[   21.775905][   T38]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[   21.775908][   T38]  ? kthread_affine_preferred (kernel/kthread.c:857)
[   21.775911][   T38]  ret_from_fork (arch/x86/kernel/process.c:158)
[   21.775915][   T38]  ? arch_exit_to_user_mode_prepare.isra.0 (arch/x86/entry/vdso/vma.c:80 (discriminator 1))
[   21.775919][   T38]  ? __switch_to (arch/x86/kernel/process_64.c:403 arch/x86/kernel/process_64.c:663)
[   21.775922][   T38]  ? kthread_affine_preferred (kernel/kthread.c:857)
[   21.775925][   T38]  ret_from_fork_asm (arch/x86/entry/entry_64.S:245)
| [   27.003651][    C3] softirqs last disabled at (550437): __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767)
| [   27.003653][    C3] Preemption disabled at:
| [   27.003654][    C3] 0x0
| [   27.003667][    C3] Tainted: [W]=WARN
[   27.003668][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   27.003671][    C3] Call Trace:
[   27.003673][    C3]  <IRQ>
[   27.003675][    C3]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   27.003681][    C3]  __might_resched.cold (kernel/sched/core.c:9234)
[   27.003686][    C3]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   27.003690][    C3]  ? __asan_memcpy (mm/kasan/shadow.c:106 (discriminator 1))
[   27.003694][    C3]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   27.003699][    C3]  __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))
[   27.003702][    C3]  ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[   27.003706][    C3]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   27.003711][    C3]  ? 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)
[   27.003713][    C3]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   27.003717][    C3]  put_chars (drivers/char/virtio_console.c:1176)
[   27.003720][    C3]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   27.003722][    C3]  ? console_prepend_replay (kernel/printk/printk.c:3005)
[   27.003727][    C3]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   27.003732][    C3]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   27.003734][    C3]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   27.003737][    C3]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   27.003740][    C3]  console_emit_next_record (kernel/printk/printk.c:3183)
[   27.003744][    C3]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   27.003747][    C3]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   27.003749][    C3]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   27.003752][    C3]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   27.003755][    C3]  ? console_flush_one_record (kernel/printk/printk.c:3247)
[   27.003758][    C3]  console_flush_one_record (kernel/printk/printk.c:3268)
[   27.003762][    C3]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   27.003766][    C3]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   27.003769][    C3]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   27.003771][    C3]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   27.003774][    C3]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   27.003776][    C3]  ? lock_release (./include/trace/events/lock.h:68 (discriminator 22) kernel/locking/lockdep.c:5920 (discriminator 22))
[   27.003778][    C3]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   27.003781][    C3]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   27.003784][    C3]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   27.003787][    C3]  vprintk_emit (kernel/printk/printk.c:2479)
[   27.003790][    C3]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   27.003793][    C3]  ? br_forward_delay_timer_expired (./include/linux/spinlock.h:347 net/bridge/br_stp_timer.c:88) bridge
[   27.003810][    C3]  ? lock_release (./include/trace/events/lock.h:68 (discriminator 22) kernel/locking/lockdep.c:5920 (discriminator 22))
[   27.003813][    C3]  ? br_forward_delay_timer_expired (./include/linux/spinlock.h:347 net/bridge/br_stp_timer.c:88) bridge
[   27.003824][    C3]  ? br_forward_delay_timer_expired (./include/linux/spinlock.h:347 net/bridge/br_stp_timer.c:88) bridge
[   27.003835][    C3]  ? is_module_text_address (./include/linux/rcupdate.h:882 ./include/linux/rcupdate.h:1216 kernel/module/main.c:3934)
[   27.003840][    C3]  _printk (kernel/printk/printk.c:2504)
[   27.003844][    C3]  ? snapshot_read.cold (user.c:?)
[   27.003847][    C3]  ? arch_stack_walk (arch/x86/kernel/stacktrace.c:25)
[   27.003852][    C3]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   27.003855][    C3]  ? nbcon_cpu_emergency_enter (./include/linux/instrumented.h:112 ./include/linux/atomic/atomic-instrumented.h:435 kernel/printk/nbcon.c:1723)
[   27.003858][    C3]  print_irq_inversion_bug.part.0 (kernel/locking/lockdep.c:4097 (discriminator 1))
[   27.003862][    C3]  mark_lock_irq (kernel/locking/lockdep.c:4095 kernel/locking/lockdep.c:4174 kernel/locking/lockdep.c:4310)
[   27.003867][    C3]  mark_lock (kernel/locking/lockdep.c:4769)
[   27.003870][    C3]  mark_usage (kernel/locking/lockdep.c:4658)
[   27.003872][    C3]  __lock_acquire (kernel/locking/lockdep.c:5208)
[   27.003875][    C3]  lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   27.003878][    C3]  ? br_forward_delay_timer_expired (./include/linux/spinlock.h:347 net/bridge/br_stp_timer.c:88) bridge
[   27.003889][    C3]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   27.003892][    C3]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   27.003895][    C3]  ? br_message_age_timer_expired (net/bridge/br_stp_timer.c:54) bridge
[   27.003906][    C3]  _raw_spin_lock (./include/linux/spinlock_api_smp.h:190 (discriminator 1) kernel/locking/spinlock.c:173 (discriminator 1))
[   27.003909][    C3]  ? br_forward_delay_timer_expired (./include/linux/spinlock.h:347 net/bridge/br_stp_timer.c:88) bridge
[   27.003920][    C3] br_forward_delay_timer_expired (./include/linux/spinlock.h:347 net/bridge/br_stp_timer.c:88) bridge
[   27.003931][    C3]  ? br_message_age_timer_expired (net/bridge/br_stp_timer.c:54) bridge
[   27.003942][    C3]  call_timer_fn (kernel/time/timer.c:1748)
[   27.003946][    C3]  ? detach_if_pending (./include/linux/list.h:1159)
[   27.003949][    C3]  ? debug_object_active_state (lib/debugobjects.c:1122)
[   27.003953][    C3]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   27.003956][    C3]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   27.003959][    C3]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   27.003962][    C3]  __run_timers (kernel/time/timer.c:1799 kernel/time/timer.c:2374)
[   27.003965][    C3]  ? br_message_age_timer_expired (net/bridge/br_stp_timer.c:54) bridge
[   27.003977][    C3]  ? __bpf_trace_itimer_expire (./include/trace/events/timer.h:407)
[   27.003979][    C3]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   27.003984][    C3]  ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[   27.003988][    C3]  run_timer_softirq (kernel/time/timer.c:2386 kernel/time/timer.c:2395 kernel/time/timer.c:2403)
[   27.003990][    C3]  ? __run_timers (./include/trace/events/timer.h:138 (discriminator 19))
[   27.003993][    C3]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[   27.003996][    C3]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   27.003999][    C3]  handle_softirqs (kernel/softirq.c:645)
[   27.004002][    C3]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   27.004004][    C3]  ? _local_bh_enable (kernel/softirq.c:428 (discriminator 1))
[   27.004008][    C3]  __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767)
[   27.004010][    C3]  irq_exit_rcu (kernel/softirq.c:784)
[   27.004012][    C3]  sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1062 (discriminator 37) arch/x86/kernel/apic/apic.c:1062 (discriminator 37))
[   27.004016][    C3]  </IRQ>
[   27.004017][    C3]  <TASK>
[   27.004017][    C3]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4488)
[   27.004020][    C3]  asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:674)
[   27.004023][    C3] RIP: 0010:pv_native_safe_halt (./arch/x86/include/asm/irqflags.h:48 arch/x86/kernel/paravirt.c:63)
[   27.004027][    C3] Code: 48 8b 3d 94 e2 f5 01 e8 1f 00 00 00 48 2b 05 58 a3 95 00 c3 0f 1f 80 00 00 00 00 f3 0f 1e fa eb 07 0f 00 2d 13 96 11 00 fb f4 <c3> 0f 1f 40 d6 48 83 ec 20 8b 17 49 89 f8 83 e2 fe 41 89 d2 0f 01
All code
========
   0:	48 8b 3d 94 e2 f5 01 	mov    0x1f5e294(%rip),%rdi        # 0x1f5e29b
   7:	e8 1f 00 00 00       	call   0x2b
   c:	48 2b 05 58 a3 95 00 	sub    0x95a358(%rip),%rax        # 0x95a36b
  13:	c3                   	ret
  14:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  1b:	f3 0f 1e fa          	endbr64
  1f:	eb 07                	jmp    0x28
  21:	0f 00 2d 13 96 11 00 	verw   0x119613(%rip)        # 0x11963b
  28:	fb                   	sti
  29:	f4                   	hlt
  2a:*	c3                   	ret		<-- trapping instruction
  2b:	0f 1f 40 d6          	nopl   -0x2a(%rax)
  2f:	48 83 ec 20          	sub    $0x20,%rsp
  33:	8b 17                	mov    (%rdi),%edx
  35:	49 89 f8             	mov    %rdi,%r8
  38:	83 e2 fe             	and    $0xfffffffe,%edx
  3b:	41 89 d2             	mov    %edx,%r10d
  3e:	0f                   	.byte 0xf
  3f:	01                   	.byte 0x1

Code starting with the faulting instruction
===========================================
   0:	c3                   	ret
   1:	0f 1f 40 d6          	nopl   -0x2a(%rax)
   5:	48 83 ec 20          	sub    $0x20,%rsp
   9:	8b 17                	mov    (%rdi),%edx
   b:	49 89 f8             	mov    %rdi,%r8
   e:	83 e2 fe             	and    $0xfffffffe,%edx
  11:	41 89 d2             	mov    %edx,%r10d
  14:	0f                   	.byte 0xf
  15:	01                   	.byte 0x1
[   27.004030][    C3] RSP: 0018:ffa0000000167e00 EFLAGS: 00000282
[   27.004034][    C3] RAX: 0000000000086623 RBX: ff11000001c88040 RCX: ffffffffafcf0307
[   27.004036][    C3] RDX: ff11000001c88040 RSI: ffffffffb2a38b01 RDI: ffffffffb248d8e0
[   27.004037][    C3] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
[   27.004039][    C3] R10: 0000000000000003 R11: 0000000000000001 R12: 1ff400000002cfc3
[   27.004040][    C3] R13: 0000000000000000 R14: dffffc0000000000 R15: 0000000000000000
[   27.004042][    C3]  ? cpuidle_idle_call.constprop.0 (kernel/sched/idle.c:199)
[   27.004047][    C3]  default_idle (./arch/x86/include/asm/paravirt.h:62 arch/x86/kernel/process.c:768)
[   27.004050][    C3]  default_idle_call (kernel/sched/idle.c:122)
[   27.004052][    C3]  cpuidle_idle_call.constprop.0 (kernel/sched/idle.c:199)
[   27.004055][    C3]  ? arch_cpu_idle_exit+0x40/0x40
[   27.004057][    C3]  ? mark_tsc_async_resets (arch/x86/kernel/tsc_sync.c:49)
[   27.004061][    C3]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   27.004064][    C3]  do_idle (kernel/sched/idle.c:355)
[   27.004066][    C3]  cpu_startup_entry (kernel/sched/idle.c:454)
[   27.004068][    C3]  start_secondary (arch/x86/kernel/smpboot.c:312)
[   27.004071][    C3]  ? set_cpu_sibling_map (arch/x86/kernel/smpboot.c:733 (discriminator 4))
[   27.004074][    C3]  common_startup_64 (arch/x86/kernel/head_64.S:418)
| [   27.097558][    C3]
| [   27.097662][    C3]
| [   27.097662][    C3] stack backtrace:
| [   27.097986][    C3] Tainted: [W]=WARN
[   27.097987][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   27.097989][    C3] Call Trace:
[   27.097991][    C3]  <IRQ>
[   27.097994][    C3]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   27.097999][    C3]  print_irq_inversion_bug.part.0.cold (kernel/locking/lockdep.c:4141)
[   27.098004][    C3]  mark_lock_irq (kernel/locking/lockdep.c:4095 kernel/locking/lockdep.c:4174 kernel/locking/lockdep.c:4310)
[   27.098009][    C3]  mark_lock (kernel/locking/lockdep.c:4769)
[   27.098012][    C3]  mark_usage (kernel/locking/lockdep.c:4658)
[   27.098014][    C3]  __lock_acquire (kernel/locking/lockdep.c:5208)
[   27.098018][    C3]  lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   27.098021][    C3]  ? br_forward_delay_timer_expired (./include/linux/spinlock.h:347 net/bridge/br_stp_timer.c:88) bridge
[   27.098036][    C3]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   27.098040][    C3]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   27.098043][    C3]  ? br_message_age_timer_expired (net/bridge/br_stp_timer.c:54) bridge
[   27.098055][    C3]  _raw_spin_lock (./include/linux/spinlock_api_smp.h:190 (discriminator 1) kernel/locking/spinlock.c:173 (discriminator 1))
[   27.098058][    C3]  ? br_forward_delay_timer_expired (./include/linux/spinlock.h:347 net/bridge/br_stp_timer.c:88) bridge
[   27.098069][    C3] br_forward_delay_timer_expired (./include/linux/spinlock.h:347 net/bridge/br_stp_timer.c:88) bridge
[   27.098081][    C3]  ? br_message_age_timer_expired (net/bridge/br_stp_timer.c:54) bridge
[   27.098092][    C3]  call_timer_fn (kernel/time/timer.c:1748)
[   27.098096][    C3]  ? detach_if_pending (./include/linux/list.h:1159)
[   27.098098][    C3]  ? debug_object_active_state (lib/debugobjects.c:1122)
[   27.098103][    C3]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   27.098106][    C3]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   27.098109][    C3]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   27.098112][    C3]  __run_timers (kernel/time/timer.c:1799 kernel/time/timer.c:2374)
[   27.098115][    C3]  ? br_message_age_timer_expired (net/bridge/br_stp_timer.c:54) bridge
[   27.098128][    C3]  ? __bpf_trace_itimer_expire (./include/trace/events/timer.h:407)
[   27.098130][    C3]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   27.098135][    C3]  ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[   27.098138][    C3]  run_timer_softirq (kernel/time/timer.c:2386 kernel/time/timer.c:2395 kernel/time/timer.c:2403)
[   27.098142][    C3]  ? __run_timers (./include/trace/events/timer.h:138 (discriminator 19))
[   27.098144][    C3]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[   27.098147][    C3]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   27.098150][    C3]  handle_softirqs (kernel/softirq.c:645)
[   27.098153][    C3]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   27.098155][    C3]  ? _local_bh_enable (kernel/softirq.c:428 (discriminator 1))
[   27.098159][    C3]  __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767)
[   27.098161][    C3]  irq_exit_rcu (kernel/softirq.c:784)
[   27.098163][    C3]  sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1062 (discriminator 37) arch/x86/kernel/apic/apic.c:1062 (discriminator 37))
[   27.098166][    C3]  </IRQ>
[   27.098167][    C3]  <TASK>
[   27.098168][    C3]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4488)
[   27.098171][    C3]  asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:674)
[   27.098174][    C3] RIP: 0010:pv_native_safe_halt (./arch/x86/include/asm/irqflags.h:48 arch/x86/kernel/paravirt.c:63)
[   27.098177][    C3] Code: 48 8b 3d 94 e2 f5 01 e8 1f 00 00 00 48 2b 05 58 a3 95 00 c3 0f 1f 80 00 00 00 00 f3 0f 1e fa eb 07 0f 00 2d 13 96 11 00 fb f4 <c3> 0f 1f 40 d6 48 83 ec 20 8b 17 49 89 f8 83 e2 fe 41 89 d2 0f 01
All code
========
   0:	48 8b 3d 94 e2 f5 01 	mov    0x1f5e294(%rip),%rdi        # 0x1f5e29b
   7:	e8 1f 00 00 00       	call   0x2b
   c:	48 2b 05 58 a3 95 00 	sub    0x95a358(%rip),%rax        # 0x95a36b
  13:	c3                   	ret
  14:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  1b:	f3 0f 1e fa          	endbr64
  1f:	eb 07                	jmp    0x28
  21:	0f 00 2d 13 96 11 00 	verw   0x119613(%rip)        # 0x11963b
  28:	fb                   	sti
  29:	f4                   	hlt
  2a:*	c3                   	ret		<-- trapping instruction
  2b:	0f 1f 40 d6          	nopl   -0x2a(%rax)
  2f:	48 83 ec 20          	sub    $0x20,%rsp
  33:	8b 17                	mov    (%rdi),%edx
  35:	49 89 f8             	mov    %rdi,%r8
  38:	83 e2 fe             	and    $0xfffffffe,%edx
  3b:	41 89 d2             	mov    %edx,%r10d
  3e:	0f                   	.byte 0xf
  3f:	01                   	.byte 0x1

Code starting with the faulting instruction
===========================================
   0:	c3                   	ret
   1:	0f 1f 40 d6          	nopl   -0x2a(%rax)
   5:	48 83 ec 20          	sub    $0x20,%rsp
   9:	8b 17                	mov    (%rdi),%edx
   b:	49 89 f8             	mov    %rdi,%r8
   e:	83 e2 fe             	and    $0xfffffffe,%edx
  11:	41 89 d2             	mov    %edx,%r10d
  14:	0f                   	.byte 0xf
  15:	01                   	.byte 0x1
[   27.098179][    C3] RSP: 0018:ffa0000000167e00 EFLAGS: 00000282
[   27.098183][    C3] RAX: 0000000000086623 RBX: ff11000001c88040 RCX: ffffffffafcf0307
[   27.098185][    C3] RDX: ff11000001c88040 RSI: ffffffffb2a38b01 RDI: ffffffffb248d8e0
[   27.098186][    C3] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
[   27.098188][    C3] R10: 0000000000000003 R11: 0000000000000001 R12: 1ff400000002cfc3
[   27.098189][    C3] R13: 0000000000000000 R14: dffffc0000000000 R15: 0000000000000000
[   27.098191][    C3]  ? cpuidle_idle_call.constprop.0 (kernel/sched/idle.c:199)
[   27.098195][    C3]  default_idle (./arch/x86/include/asm/paravirt.h:62 arch/x86/kernel/process.c:768)
[   27.098198][    C3]  default_idle_call (kernel/sched/idle.c:122)
[   27.098200][    C3]  cpuidle_idle_call.constprop.0 (kernel/sched/idle.c:199)
[   27.098203][    C3]  ? arch_cpu_idle_exit+0x40/0x40
[   27.098205][    C3]  ? mark_tsc_async_resets (arch/x86/kernel/tsc_sync.c:49)
[   27.098209][    C3]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   27.098212][    C3]  do_idle (kernel/sched/idle.c:355)
[   27.098214][    C3]  cpu_startup_entry (kernel/sched/idle.c:454)
[   27.098217][    C3]  start_secondary (arch/x86/kernel/smpboot.c:312)
[   27.098219][    C3]  ? set_cpu_sibling_map (arch/x86/kernel/smpboot.c:733 (discriminator 4))
[   27.098223][    C3]  common_startup_64 (arch/x86/kernel/head_64.S:418)
| [   28.335073][  T266] softirqs last disabled at (0): 0x0
| [   28.335075][  T266] Preemption disabled at:
| [   28.335076][  T266] 0x0
| [   28.335084][  T266] Tainted: [W]=WARN
[   28.335085][  T266] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   28.335087][  T266] Call Trace:
[   28.335089][  T266]  <TASK>
[   28.335090][  T266]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   28.335095][  T266]  __might_resched.cold (kernel/sched/core.c:9234)
[   28.335099][  T266]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   28.335103][  T266]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   28.335107][  T266]  __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))
[   28.335110][  T266]  ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[   28.335113][  T266]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   28.335117][  T266]  ? 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)
[   28.335119][  T266]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   28.335121][  T266]  put_chars (drivers/char/virtio_console.c:1176)
[   28.335123][  T266]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   28.335124][  T266]  ? printk_get_next_message (kernel/printk/printk.c:3072)
[   28.335128][  T266]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   28.335131][  T266]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   28.335133][  T266]  ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[   28.335135][  T266]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   28.335137][  T266]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   28.335139][  T266]  console_emit_next_record (kernel/printk/printk.c:3183)
[   28.335141][  T266]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   28.335143][  T266]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   28.335145][  T266]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   28.335147][  T266]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   28.335148][  T266]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   28.335150][  T266]  ? console_flush_one_record (kernel/printk/printk.c:3247)
[   28.335152][  T266]  console_flush_one_record (kernel/printk/printk.c:3268)
[   28.335154][  T266]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   28.335157][  T266]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   28.335159][  T266]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   28.335160][  T266]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   28.335162][  T266]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   28.335163][  T266]  ? lock_release (./include/trace/events/lock.h:68 (discriminator 22) kernel/locking/lockdep.c:5920 (discriminator 22))
[   28.335165][  T266]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   28.335166][  T266]  ? __rcu_read_lock (kernel/rcu/tree_plugin.h:391 (discriminator 6) kernel/rcu/tree_plugin.h:414 (discriminator 6))
[   28.335168][  T266]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   28.335170][  T266]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   28.335172][  T266]  vprintk_emit (kernel/printk/printk.c:2479)
[   28.335175][  T266]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   28.335177][  T266]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   28.335178][  T266]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[   28.335181][  T266]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:78)
[   28.335182][  T266]  _printk (kernel/printk/printk.c:2504)
[   28.335186][  T266]  ? snapshot_read.cold (user.c:?)
[   28.335188][  T266]  ? ipv6_mc_down (net/ipv6/mcast.c:1137 net/ipv6/mcast.c:2792)
[   28.335193][  T266] br_set_state (net/bridge/br_stp.c:57 (discriminator 2)) bridge
[   28.335206][  T266] br_stp_disable_port (net/bridge/br_stp_if.c:106) bridge
[   28.335215][  T266] br_device_event (net/bridge/br.c:111) bridge
[   28.335223][  T266]  ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:211 (discriminator 1) kernel/locking/spinlock.c:221 (discriminator 1))
[   28.335227][  T266]  ? _sub_I_65535_1+0x4d0/0x4d0 stp
[   28.335229][  T266]  ? addrconf_notify (net/ipv6/addrconf.c:3812)
[   28.335233][  T266]  notifier_call_chain (kernel/notifier.c:85)
[   28.335236][  T266]  __dev_notify_flags (net/core/dev.c:2313 net/core/dev.c:2327 net/core/dev.c:9855)
[   28.335239][  T266]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[   28.335241][  T266]  ? netif_change_name (net/core/dev.c:1517)
[   28.335243][  T266]  ? netif_set_allmulti (./include/net/netdev_lock.h:30 (discriminator 1))
[   28.335245][  T266]  ? __kernel_text_address (kernel/extable.c:79)
[   28.335247][  T266]  ? write_profile (profile.c:?)
[   28.335250][  T266]  ? unwind_get_return_address (arch/x86/kernel/unwind_orc.c:385 arch/x86/kernel/unwind_orc.c:380)
[   28.335253][  T266]  netif_change_flags (net/core/dev.c:9882)
[   28.335262][  T266]  do_setlink.isra.0 (net/core/rtnetlink.c:3266 (discriminator 1))
[   28.335265][  T266]  ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1))
[   28.335267][  T266]  ? rtnl_link_get_size (net/core/rtnetlink.c:747)
[   28.335268][  T266]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   28.335270][  T266]  ? stack_depot_save_flags (lib/stackdepot.c:609 lib/stackdepot.c:676)
[   28.335274][  T266]  ? kasan_save_stack (mm/kasan/common.c:58)
[   28.335277][  T266]  ? kasan_save_stack (mm/kasan/common.c:57)
[   28.335278][  T266]  ? kasan_save_track (mm/kasan/common.c:78)
[   28.335280][  T266]  ? __kasan_kmalloc (mm/kasan/common.c:398 mm/kasan/common.c:415)
[   28.335281][  T266]  ? __kmalloc_cache_noprof (./include/linux/kasan.h:263 mm/slub.c:5563)
[   28.335283][  T266]  ? rtnl_newlink (./include/linux/slab.h:991 (discriminator 1) net/core/rtnetlink.c:4113 (discriminator 1))
[   28.335284][  T266]  ? rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   28.335285][  T266]  ? netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   28.335288][  T266]  ? netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   28.335289][  T266]  ? netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   28.335291][  T266]  ? ____sys_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4) net/socket.c:2713 (discriminator 4))
[   28.335293][  T266]  ? ___sys_sendmsg (net/socket.c:2767)
[   28.335295][  T266]  ? __sys_sendmsg (net/socket.c:2799)
[   28.335296][  T266]  ? do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   28.335298][  T266]  ? entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   28.335300][  T266]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   28.335302][  T266]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   28.335304][  T266]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   28.335305][  T266]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   28.335307][  T266]  ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22))
[   28.335310][  T266]  ? __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)
[   28.335311][  T266]  ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1))
[   28.335313][  T266]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   28.335314][  T266]  ? ww_mutex_lock (kernel/locking/mutex.c:934)
[   28.335316][  T266]  ? __rtnl_newlink (net/core/rtnetlink.c:4063)
[   28.335318][  T266]  rtnl_newlink (net/core/rtnetlink.c:4215)
[   28.335320][  T266]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   28.335322][  T266]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   28.335323][  T266]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   28.335325][  T266]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   28.335327][  T266]  ? is_bpf_text_address (./include/linux/rcupdate.h:850 kernel/bpf/core.c:749)
[   28.335330][  T266]  ? is_bpf_text_address (./include/linux/rcupdate.h:882 kernel/bpf/core.c:751)
[   28.335332][  T266]  ? kernel_text_address (kernel/extable.c:125 kernel/extable.c:94)
[   28.335333][  T266]  ? __kernel_text_address (kernel/extable.c:79)
[   28.335335][  T266]  ? write_profile (profile.c:?)
[   28.335336][  T266]  ? unwind_get_return_address (arch/x86/kernel/unwind_orc.c:385 arch/x86/kernel/unwind_orc.c:380)
[   28.335337][  T266]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   28.335339][  T266]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   28.335340][  T266]  ? cap_capable (./include/trace/events/capability.h:26 (discriminator 22) security/commoncap.c:130 (discriminator 22))
[   28.335344][  T266]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   28.335345][  T266]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   28.335347][  T266]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   28.335348][  T266]  rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   28.335350][  T266]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   28.335351][  T266]  ? filter_irq_stacks (kernel/stacktrace.c:402)
[   28.335353][  T266]  ? stack_depot_save_flags (lib/stackdepot.c:609 lib/stackdepot.c:676)
[   28.335355][  T266]  netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   28.335357][  T266]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   28.335358][  T266]  ? lock_release (./include/trace/events/lock.h:68 (discriminator 22) kernel/locking/lockdep.c:5920 (discriminator 22))
[   28.335360][  T266]  ? netlink_ack (./include/linux/skbuff.h:2718)
[   28.335361][  T266]  ? __netlink_lookup (./include/linux/rcupdate.h:850 ./include/linux/rhashtable.h:709 net/netlink/af_netlink.c:499)
[   28.335363][  T266]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   28.335365][  T266]  ? lock_release (./include/trace/events/lock.h:68 (discriminator 22) kernel/locking/lockdep.c:5920 (discriminator 22))
[   28.335367][  T266]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   28.335369][  T266]  ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   28.335371][  T266]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   28.335372][  T266]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   28.335374][  T266]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   28.335376][  T266]  netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   28.335378][  T266]  ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7))
[   28.335379][  T266]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   28.335381][  T266]  ? lock_release (./include/trace/events/lock.h:68 (discriminator 22) kernel/locking/lockdep.c:5920 (discriminator 22))
[   28.335383][  T266]  ____sys_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4) net/socket.c:2713 (discriminator 4))
[   28.335385][  T266]  ? copy_msghdr_from_user (net/socket.c:2650)
[   28.335386][  T266]  ? get_timestamp.constprop.0 (./include/linux/netdevice.h:5399)
[   28.335388][  T266]  ? move_addr_to_kernel (net/socket.c:258)
[   28.335389][  T266]  ? filter_irq_stacks (kernel/stacktrace.c:402)
[   28.335392][  T266]  ___sys_sendmsg (net/socket.c:2767)
[   28.335394][  T266]  ? copy_msghdr_from_user (net/socket.c:2619)
[   28.335399][  T266]  __sys_sendmsg (net/socket.c:2799)
[   28.335400][  T266]  ? __sys_sendmsg_sock (net/socket.c:2780)
[   28.335403][  T266]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   28.335405][  T266]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   28.335406][  T266]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   28.335409][  T266]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   28.335410][  T266] RIP: 0033:0x7f4a69a0554e
[   28.335412][  T266] 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
[   28.335414][  T266] RSP: 002b:00007fffd7d0e500 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
[   28.335418][  T266] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f4a69a0554e
[   28.335419][  T266] RDX: 0000000000000000 RSI: 00007fffd7d0e5b0 RDI: 0000000000000005
[   28.335420][  T266] RBP: 00007fffd7d0e510 R08: 0000000000000000 R09: 0000000000000000
[   28.335421][  T266] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a9161a2
[   28.335422][  T266] R13: 00000000004a1620 R14: 0000000000000000 R15: 00007fffd7d0ec70
| [   34.653710][  T290] softirqs last disabled at (0): 0x0
| [   34.653711][  T290] Preemption disabled at:
| [   34.653712][  T290] 0x0
| [   34.653721][  T290] Tainted: [W]=WARN
[   34.653722][  T290] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   34.653723][  T290] Call Trace:
[   34.653725][  T290]  <TASK>
[   34.653726][  T290]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   34.653732][  T290]  __might_resched.cold (kernel/sched/core.c:9234)
[   34.653736][  T290]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   34.653740][  T290]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   34.653744][  T290]  __kmalloc_noprof (./include/linux/sched/mm.h:322 (discriminator 2) mm/slub.c:4636 (discriminator 2) mm/slub.c:4974 (discriminator 2) mm/slub.c:5413 (discriminator 2) mm/slub.c:5439 (discriminator 2))
[   34.653748][  T290]  ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[   34.653750][  T290]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   34.653754][  T290]  ? do_raw_spin_unlock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:32 ./include/asm-generic/qspinlock.h:58 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141)
[   34.653756][  T290]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   34.653758][  T290]  put_chars (drivers/char/virtio_console.c:1176)
[   34.653760][  T290]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   34.653763][  T290]  ? printk_get_next_message (kernel/printk/printk.c:3072)
[   34.653766][  T290]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   34.653770][  T290]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   34.653772][  T290]  ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[   34.653773][  T290]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   34.653775][  T290]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   34.653777][  T290]  console_emit_next_record (kernel/printk/printk.c:3183)
[   34.653780][  T290]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   34.653782][  T290]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   34.653783][  T290]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   34.653785][  T290]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   34.653787][  T290]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   34.653788][  T290]  ? console_flush_one_record (kernel/printk/printk.c:3247)
[   34.653790][  T290]  console_flush_one_record (kernel/printk/printk.c:3268)
[   34.653793][  T290]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   34.653795][  T290]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   34.653797][  T290]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   34.653798][  T290]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   34.653800][  T290]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   34.653802][  T290]  ? lock_release (./include/trace/events/lock.h:68 (discriminator 22) kernel/locking/lockdep.c:5920 (discriminator 22))
[   34.653803][  T290]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   34.653805][  T290]  ? __rcu_read_lock (kernel/rcu/tree_plugin.h:391 (discriminator 6) kernel/rcu/tree_plugin.h:414 (discriminator 6))
[   34.653807][  T290]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   34.653809][  T290]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   34.653811][  T290]  vprintk_emit (kernel/printk/printk.c:2479)
[   34.653813][  T290]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   34.653815][  T290]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   34.653817][  T290]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[   34.653819][  T290]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:78)
[   34.653821][  T290]  _printk (kernel/printk/printk.c:2504)
[   34.653824][  T290]  ? snapshot_read.cold (user.c:?)
[   34.653826][  T290]  ? ipv6_mc_down (net/ipv6/mcast.c:1137 net/ipv6/mcast.c:2792)
[   34.653831][  T290] br_set_state (net/bridge/br_stp.c:57 (discriminator 2)) bridge
[   34.653844][  T290] br_stp_disable_port (net/bridge/br_stp_if.c:106) bridge
[   34.653852][  T290] br_device_event (net/bridge/br.c:111) bridge
[   34.653861][  T290]  ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:211 (discriminator 1) kernel/locking/spinlock.c:221 (discriminator 1))
[   34.653865][  T290]  ? _sub_I_65535_1+0x4d0/0x4d0 stp
[   34.653867][  T290]  ? addrconf_notify (net/ipv6/addrconf.c:3812)
[   34.653870][  T290]  notifier_call_chain (kernel/notifier.c:85)
[   34.653873][  T290]  __dev_notify_flags (net/core/dev.c:2313 net/core/dev.c:2327 net/core/dev.c:9855)
[   34.653876][  T290]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[   34.653878][  T290]  ? netif_change_name (net/core/dev.c:1517)
[   34.653880][  T290]  ? netif_set_allmulti (./include/net/netdev_lock.h:30 (discriminator 1))
[   34.653882][  T290]  ? __kernel_text_address (kernel/extable.c:79)
[   34.653884][  T290]  ? write_profile (profile.c:?)
[   34.653886][  T290]  ? unwind_get_return_address (arch/x86/kernel/unwind_orc.c:385 arch/x86/kernel/unwind_orc.c:380)
[   34.653889][  T290]  netif_change_flags (net/core/dev.c:9882)
[   34.653891][  T290]  do_setlink.isra.0 (net/core/rtnetlink.c:3266 (discriminator 1))
[   34.653894][  T290]  ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1))
[   34.653896][  T290]  ? rtnl_link_get_size (net/core/rtnetlink.c:747)
[   34.653897][  T290]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   34.653899][  T290]  ? stack_depot_save_flags (lib/stackdepot.c:609 lib/stackdepot.c:676)
[   34.653902][  T290]  ? kasan_save_stack (mm/kasan/common.c:58)
[   34.653905][  T290]  ? kasan_save_stack (mm/kasan/common.c:57)
[   34.653907][  T290]  ? kasan_save_track (mm/kasan/common.c:78)
[   34.653908][  T290]  ? __kasan_kmalloc (mm/kasan/common.c:398 mm/kasan/common.c:415)
[   34.653910][  T290]  ? __kmalloc_cache_noprof (./include/linux/kasan.h:263 mm/slub.c:5563)
[   34.653911][  T290]  ? rtnl_newlink (./include/linux/slab.h:991 (discriminator 1) net/core/rtnetlink.c:4113 (discriminator 1))
[   34.653912][  T290]  ? rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   34.653914][  T290]  ? netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   34.653916][  T290]  ? netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   34.653918][  T290]  ? netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   34.653919][  T290]  ? ____sys_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4) net/socket.c:2713 (discriminator 4))
[   34.653921][  T290]  ? ___sys_sendmsg (net/socket.c:2767)
[   34.653923][  T290]  ? __sys_sendmsg (net/socket.c:2799)
[   34.653924][  T290]  ? do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   34.653926][  T290]  ? entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   34.653929][  T290]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   34.653931][  T290]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   34.653932][  T290]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   34.653934][  T290]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   34.653935][  T290]  ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22))
[   34.653939][  T290]  ? __mutex_lock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:3188 kernel/locking/mutex.c:89 kernel/locking/mutex.c:134 kernel/locking/mutex.c:649 kernel/locking/mutex.c:821)
[   34.653940][  T290]  ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1))
[   34.653941][  T290]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   34.653943][  T290]  ? ww_mutex_lock (kernel/locking/mutex.c:934)
[   34.653945][  T290]  ? __rtnl_newlink (net/core/rtnetlink.c:4063)
[   34.653947][  T290]  rtnl_newlink (net/core/rtnetlink.c:4215)
[   34.653949][  T290]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   34.653951][  T290]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   34.653952][  T290]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   34.653953][  T290]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   34.653955][  T290]  ? is_bpf_text_address (./include/linux/rcupdate.h:850 kernel/bpf/core.c:749)
[   34.653958][  T290]  ? is_bpf_text_address (./include/linux/rcupdate.h:882 kernel/bpf/core.c:751)
[   34.653960][  T290]  ? kernel_text_address (kernel/extable.c:125 kernel/extable.c:94)
[   34.653962][  T290]  ? __kernel_text_address (kernel/extable.c:79)
[   34.653963][  T290]  ? write_profile (profile.c:?)
[   34.653964][  T290]  ? unwind_get_return_address (arch/x86/kernel/unwind_orc.c:385 arch/x86/kernel/unwind_orc.c:380)
[   34.653965][  T290]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   34.653967][  T290]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   34.653969][  T290]  ? cap_capable (./include/trace/events/capability.h:26 (discriminator 22) security/commoncap.c:130 (discriminator 22))
[   34.653972][  T290]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   34.653974][  T290]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   34.653975][  T290]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   34.653977][  T290]  rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   34.653978][  T290]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   34.653979][  T290]  ? filter_irq_stacks (kernel/stacktrace.c:402)
[   34.653981][  T290]  ? stack_depot_save_flags (lib/stackdepot.c:609 lib/stackdepot.c:676)
[   34.653983][  T290]  netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   34.653985][  T290]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   34.653986][  T290]  ? lock_release (./include/trace/events/lock.h:68 (discriminator 22) kernel/locking/lockdep.c:5920 (discriminator 22))
[   34.653988][  T290]  ? netlink_ack (./include/linux/skbuff.h:2718)
[   34.653989][  T290]  ? __netlink_lookup (./include/linux/rcupdate.h:850 ./include/linux/rhashtable.h:709 net/netlink/af_netlink.c:499)
[   34.653992][  T290]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   34.653993][  T290]  ? lock_release (./include/trace/events/lock.h:68 (discriminator 22) kernel/locking/lockdep.c:5920 (discriminator 22))
[   34.653995][  T290]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   34.653997][  T290]  ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   34.653999][  T290]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   34.654000][  T290]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   34.654002][  T290]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   34.654004][  T290]  netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   34.654006][  T290]  ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7))
[   34.654008][  T290]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   34.654009][  T290]  ? lock_release (./include/trace/events/lock.h:68 (discriminator 22) kernel/locking/lockdep.c:5920 (discriminator 22))
[   34.654011][  T290]  ____sys_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4) net/socket.c:2713 (discriminator 4))
[   34.654013][  T290]  ? copy_msghdr_from_user (net/socket.c:2650)
[   34.654015][  T290]  ? get_timestamp.constprop.0 (./include/linux/netdevice.h:5399)
[   34.654016][  T290]  ? move_addr_to_kernel (net/socket.c:258)
[   34.654018][  T290]  ? filter_irq_stacks (kernel/stacktrace.c:402)
[   34.654020][  T290]  ___sys_sendmsg (net/socket.c:2767)
[   34.654022][  T290]  ? copy_msghdr_from_user (net/socket.c:2619)
[   34.654027][  T290]  __sys_sendmsg (net/socket.c:2799)
[   34.654029][  T290]  ? __sys_sendmsg_sock (net/socket.c:2780)
[   34.654031][  T290]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   34.654033][  T290]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   34.654035][  T290]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   34.654037][  T290]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   34.654038][  T290] RIP: 0033:0x7f8356c6c54e
[   34.654040][  T290] Code: 4d 89 d8 e8 b4 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 03 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 b4 bd 00 00       	call   0xbdbc
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 03 ff ff ff       	call   0xffffffffffffff3c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 03 ff ff ff       	call   0xffffffffffffff12
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[   34.654042][  T290] RSP: 002b:00007fff9ec961d0 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
[   34.654046][  T290] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f8356c6c54e
[   34.654047][  T290] RDX: 0000000000000000 RSI: 00007fff9ec96280 RDI: 0000000000000005
[   34.654048][  T290] RBP: 00007fff9ec961e0 R08: 0000000000000000 R09: 0000000000000000
[   34.654049][  T290] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a9161a9


Finger prints:
mark_lock_irq:mark_lock:mark_usage:__lock_acquire:_raw_spin_lock
__irq_exit_rcu:dump_stack_lvl:__kmalloc_noprof:put_chars:hvc_console_print
__kmalloc_noprof:put_chars:hvc_console_print:console_emit_next_record:console_flush_one_record
__irq_exit_rcu:vprintk_emit:dump_stack_lvl:__kmalloc_noprof:put_chars
br_port_carrier_check:dump_stack_lvl:__kmalloc_noprof:put_chars:hvc_console_print