======================================
| [   10.211290][  T227] softirqs last disabled at (18949): __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767)
| [   10.211292][  T227] Preemption disabled at:
| [   10.211293][  T227] vprintk_emit (kernel/printk/printk.c:2471)
| [   10.211302][  T227] Tainted: [W]=WARN
[   10.211303][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   10.211304][  T227] Call Trace:
[   10.211306][  T227]  <TASK>
[   10.211307][  T227]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   10.211313][  T227]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   10.211315][  T227]  __might_resched.cold (kernel/sched/core.c:9234)
[   10.211320][  T227]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   10.211324][  T227]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   10.211330][  T227]  __kmalloc_noprof (./include/linux/sched/mm.h:322 (discriminator 2) mm/slub.c:4636 (discriminator 2) mm/slub.c:4974 (discriminator 2) mm/slub.c:5413 (discriminator 2) mm/slub.c:5439 (discriminator 2))
[   10.211332][  T227]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   10.211337][  T227]  ? do_raw_spin_unlock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:32 ./include/asm-generic/qspinlock.h:58 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141)
[   10.211340][  T227]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   10.211343][  T227]  put_chars (drivers/char/virtio_console.c:1176)
[   10.211346][  T227]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   10.211351][  T227]  ? validate_chain (kernel/locking/lockdep.c:159 kernel/locking/lockdep.c:191 kernel/locking/lockdep.c:3928)
[   10.211354][  T227]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   10.211357][  T227]  ? mark_usage (kernel/locking/lockdep.c:4690)
[   10.211359][  T227]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   10.211361][  T227]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   10.211365][  T227]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   10.211367][  T227]  ? console_emit_next_record (kernel/printk/printk.c:3095 (discriminator 2) kernel/printk/printk.c:3182 (discriminator 2))
[   10.211371][  T227]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   10.211375][  T227]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   10.211379][  T227]  console_emit_next_record (kernel/printk/printk.c:3183)
[   10.211383][  T227]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   10.211385][  T227]  ? console_flush_one_record (./include/linux/rcupdate.h:314 (discriminator 2) ./include/linux/srcu.h:439 (discriminator 2) kernel/printk/printk.c:291 (discriminator 2) kernel/printk/printk.c:3246 (discriminator 2))
[   10.211388][  T227]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   10.211390][  T227]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   10.211394][  T227]  console_flush_one_record (kernel/printk/printk.c:3268)
[   10.211398][  T227]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   10.211400][  T227]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   10.211405][  T227]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   10.211408][  T227]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   10.211410][  T227]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   10.211413][  T227]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   10.211416][  T227]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   10.211418][  T227]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   10.211421][  T227]  vprintk_emit (kernel/printk/printk.c:2479)
[   10.211425][  T227]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   10.211428][  T227]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   10.211429][  T227]  ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:211 (discriminator 1) kernel/locking/spinlock.c:221 (discriminator 1))
[   10.211434][  T227]  ? mark_held_locks (kernel/locking/lockdep.c:4341)
[   10.211437][  T227]  _printk (kernel/printk/printk.c:2504)
[   10.211441][  T227]  ? snapshot_read.cold (user.c:?)
[   10.211445][  T227]  ? br_multicast_flood (??:?) bridge
[   10.211457][  T227]  ? do_setlink.isra.0 (net/core/rtnetlink.c:3273 (discriminator 1))
[   10.211459][  T227]  ? rtnl_newlink (net/core/rtnetlink.c:4215)
[   10.211460][  T227]  ? rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   10.211464][  T227] br_set_state (net/bridge/br_stp.c:57 (discriminator 2)) bridge
[   10.211475][  T227] br_init_port (net/bridge/br_stp_if.c:39) bridge
[   10.211483][  T227] new_nbp (net/bridge/br_if.c:449) bridge
[   10.211492][  T227] br_add_if (net/bridge/br_if.c:592) bridge
[   10.211500][  T227]  ? is_bpf_text_address (./include/linux/rcupdate.h:882 kernel/bpf/core.c:751)
[   10.211504][  T227]  ? kernel_text_address (kernel/extable.c:125 kernel/extable.c:94)
[   10.211507][  T227]  ? __kernel_text_address (kernel/extable.c:79)
[   10.211511][  T227]  do_set_master (net/core/rtnetlink.c:3071)
[   10.211522][  T227]  do_setlink.isra.0 (net/core/rtnetlink.c:3273 (discriminator 1))
[   10.211526][  T227]  ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1))
[   10.211529][  T227]  ? rtnl_link_get_size (net/core/rtnetlink.c:747)
[   10.211530][  T227]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380)
[   10.211533][  T227]  ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2))
[   10.211536][  T227]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   10.211539][  T227]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   10.211541][  T227]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   10.211544][  T227]  ? kasan_save_stack (mm/kasan/common.c:58)
[   10.211547][  T227]  ? kasan_save_stack (mm/kasan/common.c:57)
[   10.211548][  T227]  ? kasan_save_track (mm/kasan/common.c:78)
[   10.211551][  T227]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   10.211553][  T227]  ? netlink_seq_next (net/netlink/af_netlink.c:2685)
[   10.211556][  T227]  ? ___sys_sendmsg (net/socket.c:2757)
[   10.211561][  T227]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   10.211563][  T227]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   10.211565][  T227]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   10.211568][  T227]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   10.211569][  T227]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   10.211571][  T227]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   10.211574][  T227]  ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22))
[   10.211578][  T227]  ? __mutex_lock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:3188 kernel/locking/mutex.c:89 kernel/locking/mutex.c:134 kernel/locking/mutex.c:649 kernel/locking/mutex.c:821)
[   10.211579][  T227]  ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1))
[   10.211581][  T227]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   10.211585][  T227]  ? ww_mutex_lock (kernel/locking/mutex.c:934)
[   10.211587][  T227]  ? nla_get_range_signed (lib/nlattr.c:270)
[   10.211591][  T227]  ? __rtnl_newlink (net/core/rtnetlink.c:4063)
[   10.211597][  T227]  rtnl_newlink (net/core/rtnetlink.c:4215)
[   10.211602][  T227]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   10.211604][  T227]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   10.211608][  T227]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   10.211610][  T227]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   10.211612][  T227]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   10.211614][  T227]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   10.211618][  T227]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   10.211620][  T227]  rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   10.211623][  T227]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   10.211625][  T227]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   10.211629][  T227]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   10.211631][  T227]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   10.211634][  T227]  netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   10.211636][  T227]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   10.211639][  T227]  ? netlink_ack (./include/linux/skbuff.h:2718)
[   10.211645][  T227]  ? netlink_deliver_tap (./include/linux/rcupdate.h:319 (discriminator 2) ./include/linux/rcupdate.h:880 (discriminator 2) ./include/net/netns/generic.h:48 (discriminator 2) net/netlink/af_netlink.c:334 (discriminator 2))
[   10.211647][  T227]  ? netlink_deliver_tap (./include/linux/rcupdate.h:319 (discriminator 2) ./include/linux/rcupdate.h:880 (discriminator 2) net/netlink/af_netlink.c:341 (discriminator 2))
[   10.211651][  T227]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   10.211655][  T227]  ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   10.211657][  T227]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   10.211662][  T227]  netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   10.211665][  T227]  ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7))
[   10.211669][  T227]  ? __might_fault (mm/memory.c:7482 (discriminator 5))
[   10.211675][  T227]  ____sys_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4) net/socket.c:2713 (discriminator 4))
[   10.211677][  T227]  ? copy_msghdr_from_user (net/socket.c:2650)
[   10.211680][  T227]  ? get_timestamp.constprop.0 (./include/linux/netdevice.h:5399)
[   10.211681][  T227]  ? move_addr_to_kernel (net/socket.c:258)
[   10.211689][  T227]  ___sys_sendmsg (net/socket.c:2767)
[   10.211692][  T227]  ? copy_msghdr_from_user (net/socket.c:2619)
[   10.211707][  T227]  __sys_sendmsg (net/socket.c:2799)
[   10.211710][  T227]  ? __sys_sendmsg_sock (net/socket.c:2780)
[   10.211717][  T227]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   10.211720][  T227]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   10.211723][  T227]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   10.211726][  T227]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   10.211728][  T227] RIP: 0033:0x7f45075ca54e
[   10.211731][  T227] Code: 4d 89 d8 e8 b4 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 03 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 b4 bd 00 00       	call   0xbdbc
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 03 ff ff ff       	call   0xffffffffffffff3c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 03 ff ff ff       	call   0xffffffffffffff12
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[   10.211733][  T227] RSP: 002b:00007ffe74f15870 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
[   10.211736][  T227] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007f45075ca54e
[   10.211737][  T227] RDX: 0000000000000000 RSI: 00007ffe74f15920 RDI: 0000000000000005
[   10.211738][  T227] RBP: 00007ffe74f15880 R08: 0000000000000000 R09: 0000000000000000
[   10.211739][  T227] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a912d52
[   10.211740][  T227] R13: 00000000004a1620 R14: 0000000000000000 R15: 00007ffe74f15fe0
| [   20.490023][   T38] softirqs last disabled at (88270): br_port_carrier_check (./include/linux/spinlock.h:353 net/bridge/br_if.c:87) bridge
| [   20.490031][   T38] Preemption disabled at:
| [   20.490032][   T38] 0x0
| [   20.490042][   T38] Tainted: [W]=WARN
[   20.490042][   T38] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   20.490044][   T38] Workqueue: events_unbound linkwatch_event
[   20.490047][   T38] Call Trace:
[   20.490049][   T38]  <TASK>
[   20.490051][   T38]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   20.490057][   T38]  __might_resched.cold (kernel/sched/core.c:9234)
[   20.490062][   T38]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   20.490066][   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)
[   20.490072][   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))
[   20.490074][   T38]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   20.490080][   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)
[   20.490083][   T38]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   20.490086][   T38]  put_chars (drivers/char/virtio_console.c:1176)
[   20.490089][   T38]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   20.490092][   T38]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   20.490096][   T38]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   20.490099][   T38]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   20.490103][   T38]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   20.490105][   T38]  ? mark_usage (kernel/locking/lockdep.c:4690)
[   20.490107][   T38]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   20.490109][   T38]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   20.490113][   T38]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   20.490115][   T38]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   20.490119][   T38]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   20.490124][   T38]  console_emit_next_record (kernel/printk/printk.c:3183)
[   20.490128][   T38]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   20.490130][   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))
[   20.490133][   T38]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   20.490135][   T38]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   20.490140][   T38]  console_flush_one_record (kernel/printk/printk.c:3268)
[   20.490144][   T38]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   20.490146][   T38]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   20.490151][   T38]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   20.490154][   T38]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   20.490156][   T38]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   20.490159][   T38]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   20.490163][   T38]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   20.490165][   T38]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   20.490170][   T38]  vprintk_emit (kernel/printk/printk.c:2479)
[   20.490175][   T38]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   20.490177][   T38]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   20.490180][   T38]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   20.490184][   T38]  _printk (kernel/printk/printk.c:2504)
[   20.490188][   T38]  ? snapshot_read.cold (user.c:?)
[   20.490193][   T38]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   20.490198][   T38] br_set_state (net/bridge/br_stp.c:57 (discriminator 2)) bridge
[   20.490208][   T38] br_init_port (net/bridge/br_stp_if.c:39) bridge
[   20.490217][   T38] br_stp_enable_port (net/bridge/br_stp_if.c:93) bridge
[   20.490224][   T38] br_port_carrier_check (net/bridge/br_if.c:90) bridge
[   20.490233][   T38] br_device_event (net/bridge/br.c:101) bridge
[   20.490241][   T38]  ? _sub_I_65535_1+0x4d0/0x4d0 stp
[   20.490243][   T38]  ? nlmsg_notify (./include/net/netlink.h:1165 ./include/net/netlink.h:1184 net/netlink/af_netlink.c:2599)
[   20.490250][   T38]  notifier_call_chain (kernel/notifier.c:85)
[   20.490256][   T38]  netif_state_change (net/core/dev.c:1625)
[   20.490261][   T38]  ? call_netdevice_notifiers_info (./include/net/net_namespace.h:422 (discriminator 7))
[   20.490266][   T38]  ? linkwatch_do_dev (net/core/link_watch.c:182 net/core/link_watch.c:166)
[   20.490268][   T38]  __linkwatch_run_queue (net/core/link_watch.c:240)
[   20.490272][   T38]  ? linkwatch_do_dev (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   20.490274][   T38]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   20.490279][   T38]  linkwatch_event (net/core/link_watch.c:314 (discriminator 11))
[   20.490281][   T38]  ? __linkwatch_run_queue (./include/linux/list.h:577)
[   20.490285][   T38]  process_one_work (kernel/workqueue.c:3387)
[   20.490291][   T38]  ? __queue_delayed_work (kernel/workqueue.c:2622)
[   20.490294][   T38]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   20.490302][   T38]  worker_thread (kernel/workqueue.c:3470 kernel/workqueue.c:3551)
[   20.490309][   T38]  ? rescuer_thread (./include/linux/list.h:419 (discriminator 3))
[   20.490312][   T38]  kthread (kernel/kthread.c:436)
[   20.490314][   T38]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[   20.490317][   T38]  ? kthread_affine_preferred (kernel/kthread.c:857)
[   20.490320][   T38]  ret_from_fork (arch/x86/kernel/process.c:158)
[   20.490324][   T38]  ? arch_exit_to_user_mode_prepare.isra.0 (arch/x86/entry/vdso/vma.c:80 (discriminator 1))
[   20.490327][   T38]  ? __switch_to (arch/x86/kernel/process_64.c:403 arch/x86/kernel/process_64.c:663)
[   20.490331][   T38]  ? kthread_affine_preferred (kernel/kthread.c:857)
[   20.490334][   T38]  ret_from_fork_asm (arch/x86/entry/entry_64.S:245)
| [   25.473226][    C1] softirqs last disabled at (502489): __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767)
| [   25.473227][    C1] Preemption disabled at:
| [   25.473228][    C1] 0x0
| [   25.473237][    C1] Tainted: [W]=WARN
[   25.473238][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   25.473240][    C1] Call Trace:
[   25.473241][    C1]  <IRQ>
[   25.473242][    C1]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   25.473247][    C1]  __might_resched.cold (kernel/sched/core.c:9234)
[   25.473251][    C1]  ? common_startup_64 (arch/x86/kernel/head_64.S:418)
[   25.473254][    C1]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   25.473257][    C1]  ? __asan_memcpy (mm/kasan/shadow.c:106 (discriminator 1))
[   25.473259][    C1]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   25.473263][    C1]  __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))
[   25.473266][    C1]  ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[   25.473269][    C1]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   25.473272][    C1]  ? 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)
[   25.473274][    C1]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   25.473275][    C1]  put_chars (drivers/char/virtio_console.c:1176)
[   25.473277][    C1]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   25.473279][    C1]  ? console_prepend_replay (kernel/printk/printk.c:3005)
[   25.473282][    C1]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   25.473285][    C1]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   25.473287][    C1]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   25.473288][    C1]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   25.473291][    C1]  console_emit_next_record (kernel/printk/printk.c:3183)
[   25.473293][    C1]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   25.473295][    C1]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   25.473297][    C1]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   25.473298][    C1]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   25.473300][    C1]  ? console_flush_one_record (kernel/printk/printk.c:3247)
[   25.473302][    C1]  console_flush_one_record (kernel/printk/printk.c:3268)
[   25.473304][    C1]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   25.473307][    C1]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   25.473309][    C1]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   25.473310][    C1]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   25.473312][    C1]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   25.473313][    C1]  ? lock_release (./include/trace/events/lock.h:68 (discriminator 22) kernel/locking/lockdep.c:5920 (discriminator 22))
[   25.473315][    C1]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   25.473317][    C1]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   25.473319][    C1]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   25.473321][    C1]  vprintk_emit (kernel/printk/printk.c:2479)
[   25.473323][    C1]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   25.473325][    C1]  ? br_forward_delay_timer_expired (./include/linux/spinlock.h:347 net/bridge/br_stp_timer.c:88) bridge
[   25.473337][    C1]  ? lock_release (./include/trace/events/lock.h:68 (discriminator 22) kernel/locking/lockdep.c:5920 (discriminator 22))
[   25.473338][    C1]  ? br_forward_delay_timer_expired (./include/linux/spinlock.h:347 net/bridge/br_stp_timer.c:88) bridge
[   25.473345][    C1]  ? br_forward_delay_timer_expired (./include/linux/spinlock.h:347 net/bridge/br_stp_timer.c:88) bridge
[   25.473351][    C1]  ? is_module_text_address (./include/linux/rcupdate.h:882 ./include/linux/rcupdate.h:1216 kernel/module/main.c:3934)
[   25.473354][    C1]  _printk (kernel/printk/printk.c:2504)
[   25.473357][    C1]  ? snapshot_read.cold (user.c:?)
[   25.473359][    C1]  ? arch_stack_walk (arch/x86/kernel/stacktrace.c:25)
[   25.473363][    C1]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   25.473365][    C1]  ? nbcon_cpu_emergency_enter (./include/linux/instrumented.h:112 ./include/linux/atomic/atomic-instrumented.h:435 kernel/printk/nbcon.c:1723)
[   25.473367][    C1]  print_irq_inversion_bug.part.0 (kernel/locking/lockdep.c:4097 (discriminator 1))
[   25.473369][    C1]  mark_lock_irq (kernel/locking/lockdep.c:4095 kernel/locking/lockdep.c:4174 kernel/locking/lockdep.c:4310)
[   25.473372][    C1]  mark_lock (kernel/locking/lockdep.c:4769)
[   25.473374][    C1]  mark_usage (kernel/locking/lockdep.c:4658)
[   25.473375][    C1]  __lock_acquire (kernel/locking/lockdep.c:5208)
[   25.473378][    C1]  lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   25.473379][    C1]  ? br_forward_delay_timer_expired (./include/linux/spinlock.h:347 net/bridge/br_stp_timer.c:88) bridge
[   25.473386][    C1]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   25.473388][    C1]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   25.473390][    C1]  ? br_message_age_timer_expired (net/bridge/br_stp_timer.c:54) bridge
[   25.473396][    C1]  _raw_spin_lock (./include/linux/spinlock_api_smp.h:190 (discriminator 1) kernel/locking/spinlock.c:173 (discriminator 1))
[   25.473398][    C1]  ? br_forward_delay_timer_expired (./include/linux/spinlock.h:347 net/bridge/br_stp_timer.c:88) bridge
[   25.473404][    C1] br_forward_delay_timer_expired (./include/linux/spinlock.h:347 net/bridge/br_stp_timer.c:88) bridge
[   25.473410][    C1]  ? br_message_age_timer_expired (net/bridge/br_stp_timer.c:54) bridge
[   25.473416][    C1]  call_timer_fn (kernel/time/timer.c:1748)
[   25.473419][    C1]  ? detach_if_pending (./include/linux/list.h:1159)
[   25.473421][    C1]  ? debug_object_active_state (lib/debugobjects.c:1122)
[   25.473424][    C1]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   25.473426][    C1]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   25.473428][    C1]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   25.473430][    C1]  __run_timers (kernel/time/timer.c:1799 kernel/time/timer.c:2374)
[   25.473432][    C1]  ? br_message_age_timer_expired (net/bridge/br_stp_timer.c:54) bridge
[   25.473439][    C1]  ? __bpf_trace_itimer_expire (./include/trace/events/timer.h:407)
[   25.473441][    C1]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   25.473444][    C1]  ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[   25.473446][    C1]  run_timer_softirq (kernel/time/timer.c:2386 kernel/time/timer.c:2395 kernel/time/timer.c:2403)
[   25.473448][    C1]  ? __run_timers (./include/trace/events/timer.h:138 (discriminator 19))
[   25.473450][    C1]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[   25.473452][    C1]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   25.473454][    C1]  handle_softirqs (kernel/softirq.c:645)
[   25.473456][    C1]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   25.473457][    C1]  ? _local_bh_enable (kernel/softirq.c:428 (discriminator 1))
[   25.473459][    C1]  __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767)
[   25.473461][    C1]  irq_exit_rcu (kernel/softirq.c:784)
[   25.473463][    C1]  sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1062 (discriminator 37) arch/x86/kernel/apic/apic.c:1062 (discriminator 37))
[   25.473465][    C1]  </IRQ>
[   25.473466][    C1]  <TASK>
[   25.473467][    C1]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4488)
[   25.473468][    C1]  asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:674)
[   25.473470][    C1] RIP: 0010:pv_native_safe_halt (./arch/x86/include/asm/irqflags.h:48 arch/x86/kernel/paravirt.c:63)
[   25.473473][    C1] 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
[   25.473475][    C1] RSP: 0018:ffa0000000147e00 EFLAGS: 00000282
[   25.473478][    C1] RAX: 000000000007aad7 RBX: ff11000001bea380 RCX: ffffffff8ecf0307
[   25.473479][    C1] RDX: ff11000001bea380 RSI: ffffffff91a38b01 RDI: ffffffff9148d8e0
[   25.473480][    C1] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
[   25.473481][    C1] R10: 0000000000000001 R11: 0000000000000001 R12: 1ff4000000028fc3
[   25.473482][    C1] R13: 0000000000000000 R14: dffffc0000000000 R15: 0000000000000000
[   25.473483][    C1]  ? cpuidle_idle_call.constprop.0 (kernel/sched/idle.c:199)
[   25.473486][    C1]  default_idle (./arch/x86/include/asm/paravirt.h:62 arch/x86/kernel/process.c:768)
[   25.473488][    C1]  default_idle_call (kernel/sched/idle.c:122)
[   25.473490][    C1]  cpuidle_idle_call.constprop.0 (kernel/sched/idle.c:199)
[   25.473492][    C1]  ? arch_cpu_idle_exit+0x40/0x40
[   25.473493][    C1]  ? mark_tsc_async_resets (arch/x86/kernel/tsc_sync.c:49)
[   25.473496][    C1]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   25.473498][    C1]  do_idle (kernel/sched/idle.c:355)
[   25.473499][    C1]  cpu_startup_entry (kernel/sched/idle.c:454)
[   25.473501][    C1]  start_secondary (arch/x86/kernel/smpboot.c:312)
[   25.473503][    C1]  ? set_cpu_sibling_map (arch/x86/kernel/smpboot.c:733 (discriminator 4))
[   25.473505][    C1]  common_startup_64 (arch/x86/kernel/head_64.S:418)
| [   25.533031][    C1]
| [   25.533100][    C1]
| [   25.533100][    C1] stack backtrace:
| [   25.533320][    C1] Tainted: [W]=WARN
[   25.533321][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   25.533322][    C1] Call Trace:
[   25.533323][    C1]  <IRQ>
[   25.533324][    C1]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   25.533328][    C1]  print_irq_inversion_bug.part.0.cold (kernel/locking/lockdep.c:4141)
[   25.533330][    C1]  mark_lock_irq (kernel/locking/lockdep.c:4095 kernel/locking/lockdep.c:4174 kernel/locking/lockdep.c:4310)
[   25.533333][    C1]  mark_lock (kernel/locking/lockdep.c:4769)
[   25.533335][    C1]  mark_usage (kernel/locking/lockdep.c:4658)
[   25.533337][    C1]  __lock_acquire (kernel/locking/lockdep.c:5208)
[   25.533339][    C1]  lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   25.533341][    C1]  ? br_forward_delay_timer_expired (./include/linux/spinlock.h:347 net/bridge/br_stp_timer.c:88) bridge
[   25.533348][    C1]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   25.533351][    C1]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   25.533352][    C1]  ? br_message_age_timer_expired (net/bridge/br_stp_timer.c:54) bridge
[   25.533359][    C1]  _raw_spin_lock (./include/linux/spinlock_api_smp.h:190 (discriminator 1) kernel/locking/spinlock.c:173 (discriminator 1))
[   25.533360][    C1]  ? br_forward_delay_timer_expired (./include/linux/spinlock.h:347 net/bridge/br_stp_timer.c:88) bridge
[   25.533367][    C1] br_forward_delay_timer_expired (./include/linux/spinlock.h:347 net/bridge/br_stp_timer.c:88) bridge
[   25.533374][    C1]  ? br_message_age_timer_expired (net/bridge/br_stp_timer.c:54) bridge
[   25.533380][    C1]  call_timer_fn (kernel/time/timer.c:1748)
[   25.533382][    C1]  ? detach_if_pending (./include/linux/list.h:1159)
[   25.533384][    C1]  ? debug_object_active_state (lib/debugobjects.c:1122)
[   25.533387][    C1]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   25.533389][    C1]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   25.533390][    C1]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   25.533393][    C1]  __run_timers (kernel/time/timer.c:1799 kernel/time/timer.c:2374)
[   25.533395][    C1]  ? br_message_age_timer_expired (net/bridge/br_stp_timer.c:54) bridge
[   25.533402][    C1]  ? __bpf_trace_itimer_expire (./include/trace/events/timer.h:407)
[   25.533404][    C1]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   25.533406][    C1]  ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[   25.533409][    C1]  run_timer_softirq (kernel/time/timer.c:2386 kernel/time/timer.c:2395 kernel/time/timer.c:2403)
[   25.533411][    C1]  ? __run_timers (./include/trace/events/timer.h:138 (discriminator 19))
[   25.533412][    C1]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[   25.533414][    C1]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   25.533416][    C1]  handle_softirqs (kernel/softirq.c:645)
[   25.533418][    C1]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   25.533420][    C1]  ? _local_bh_enable (kernel/softirq.c:428 (discriminator 1))
[   25.533422][    C1]  __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767)
[   25.533423][    C1]  irq_exit_rcu (kernel/softirq.c:784)
[   25.533424][    C1]  sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1062 (discriminator 37) arch/x86/kernel/apic/apic.c:1062 (discriminator 37))
[   25.533426][    C1]  </IRQ>
[   25.533427][    C1]  <TASK>
[   25.533427][    C1]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4488)
[   25.533429][    C1]  asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:674)
[   25.533431][    C1] RIP: 0010:pv_native_safe_halt (./arch/x86/include/asm/irqflags.h:48 arch/x86/kernel/paravirt.c:63)
[   25.533433][    C1] 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
[   25.533434][    C1] RSP: 0018:ffa0000000147e00 EFLAGS: 00000282
[   25.533436][    C1] RAX: 000000000007aad7 RBX: ff11000001bea380 RCX: ffffffff8ecf0307
[   25.533437][    C1] RDX: ff11000001bea380 RSI: ffffffff91a38b01 RDI: ffffffff9148d8e0
[   25.533438][    C1] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
[   25.533439][    C1] R10: 0000000000000001 R11: 0000000000000001 R12: 1ff4000000028fc3
[   25.533440][    C1] R13: 0000000000000000 R14: dffffc0000000000 R15: 0000000000000000
[   25.533441][    C1]  ? cpuidle_idle_call.constprop.0 (kernel/sched/idle.c:199)
[   25.533444][    C1]  default_idle (./arch/x86/include/asm/paravirt.h:62 arch/x86/kernel/process.c:768)
[   25.533445][    C1]  default_idle_call (kernel/sched/idle.c:122)
[   25.533447][    C1]  cpuidle_idle_call.constprop.0 (kernel/sched/idle.c:199)
[   25.533449][    C1]  ? arch_cpu_idle_exit+0x40/0x40
[   25.533451][    C1]  ? mark_tsc_async_resets (arch/x86/kernel/tsc_sync.c:49)
[   25.533452][    C1]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   25.533454][    C1]  do_idle (kernel/sched/idle.c:355)
[   25.533456][    C1]  cpu_startup_entry (kernel/sched/idle.c:454)
[   25.533457][    C1]  start_secondary (arch/x86/kernel/smpboot.c:312)
[   25.533459][    C1]  ? set_cpu_sibling_map (arch/x86/kernel/smpboot.c:733 (discriminator 4))
[   25.533461][    C1]  common_startup_64 (arch/x86/kernel/head_64.S:418)
| [   26.784296][  T256] softirqs last disabled at (0): 0x0
| [   26.784298][  T256] Preemption disabled at:
| [   26.784299][  T256] 0x0
| [   26.784307][  T256] Tainted: [W]=WARN
[   26.784308][  T256] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   26.784310][  T256] Call Trace:
[   26.784311][  T256]  <TASK>
[   26.784312][  T256]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   26.784317][  T256]  __might_resched.cold (kernel/sched/core.c:9234)
[   26.784321][  T256]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   26.784325][  T256]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   26.784328][  T256]  __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))
[   26.784332][  T256]  ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[   26.784335][  T256]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   26.784338][  T256]  ? 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)
[   26.784340][  T256]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   26.784342][  T256]  put_chars (drivers/char/virtio_console.c:1176)
[   26.784344][  T256]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   26.784345][  T256]  ? printk_get_next_message (kernel/printk/printk.c:3072)
[   26.784349][  T256]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   26.784352][  T256]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   26.784354][  T256]  ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[   26.784355][  T256]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   26.784357][  T256]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   26.784360][  T256]  console_emit_next_record (kernel/printk/printk.c:3183)
[   26.784362][  T256]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   26.784364][  T256]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   26.784366][  T256]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   26.784367][  T256]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   26.784369][  T256]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   26.784371][  T256]  ? console_flush_one_record (kernel/printk/printk.c:3247)
[   26.784373][  T256]  console_flush_one_record (kernel/printk/printk.c:3268)
[   26.784375][  T256]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   26.784378][  T256]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   26.784380][  T256]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   26.784381][  T256]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   26.784383][  T256]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   26.784384][  T256]  ? lock_release (./include/trace/events/lock.h:68 (discriminator 22) kernel/locking/lockdep.c:5920 (discriminator 22))
[   26.784386][  T256]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   26.784387][  T256]  ? __rcu_read_lock (kernel/rcu/tree_plugin.h:391 (discriminator 6) kernel/rcu/tree_plugin.h:414 (discriminator 6))
[   26.784389][  T256]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   26.784391][  T256]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   26.784393][  T256]  vprintk_emit (kernel/printk/printk.c:2479)
[   26.784396][  T256]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   26.784398][  T256]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   26.784399][  T256]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[   26.784402][  T256]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:78)
[   26.784403][  T256]  _printk (kernel/printk/printk.c:2504)
[   26.784406][  T256]  ? snapshot_read.cold (user.c:?)
[   26.784408][  T256]  ? ipv6_mc_down (net/ipv6/mcast.c:1137 net/ipv6/mcast.c:2792)
[   26.784413][  T256] br_set_state (net/bridge/br_stp.c:57 (discriminator 2)) bridge
[   26.784426][  T256] br_stp_disable_port (net/bridge/br_stp_if.c:106) bridge
[   26.784434][  T256] br_device_event (net/bridge/br.c:111) bridge
[   26.784443][  T256]  ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:211 (discriminator 1) kernel/locking/spinlock.c:221 (discriminator 1))
[   26.784446][  T256]  ? _sub_I_65535_1+0x4d0/0x4d0 stp
[   26.784448][  T256]  ? addrconf_notify (net/ipv6/addrconf.c:3812)
[   26.784452][  T256]  notifier_call_chain (kernel/notifier.c:85)
[   26.784455][  T256]  __dev_notify_flags (net/core/dev.c:2313 net/core/dev.c:2327 net/core/dev.c:9855)
[   26.784459][  T256]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[   26.784460][  T256]  ? netif_change_name (net/core/dev.c:1517)
[   26.784462][  T256]  ? netif_set_allmulti (./include/net/netdev_lock.h:30 (discriminator 1))
[   26.784464][  T256]  ? __kernel_text_address (kernel/extable.c:79)
[   26.784467][  T256]  ? write_profile (profile.c:?)
[   26.784469][  T256]  ? unwind_get_return_address (arch/x86/kernel/unwind_orc.c:385 arch/x86/kernel/unwind_orc.c:380)
[   26.784472][  T256]  netif_change_flags (net/core/dev.c:9882)
[   26.784474][  T256]  do_setlink.isra.0 (net/core/rtnetlink.c:3266 (discriminator 1))
[   26.784477][  T256]  ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1))
[   26.784479][  T256]  ? rtnl_link_get_size (net/core/rtnetlink.c:747)
[   26.784480][  T256]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   26.784482][  T256]  ? stack_depot_save_flags (lib/stackdepot.c:609 lib/stackdepot.c:676)
[   26.784485][  T256]  ? kasan_save_stack (mm/kasan/common.c:58)
[   26.784489][  T256]  ? kasan_save_stack (mm/kasan/common.c:57)
[   26.784490][  T256]  ? kasan_save_track (mm/kasan/common.c:78)
[   26.784492][  T256]  ? __kasan_kmalloc (mm/kasan/common.c:398 mm/kasan/common.c:415)
[   26.784493][  T256]  ? __kmalloc_cache_noprof (./include/linux/kasan.h:263 mm/slub.c:5563)
[   26.784495][  T256]  ? rtnl_newlink (./include/linux/slab.h:991 (discriminator 1) net/core/rtnetlink.c:4113 (discriminator 1))
[   26.784496][  T256]  ? rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   26.784497][  T256]  ? netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   26.784500][  T256]  ? netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   26.784501][  T256]  ? netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   26.784503][  T256]  ? ____sys_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4) net/socket.c:2713 (discriminator 4))
[   26.784505][  T256]  ? ___sys_sendmsg (net/socket.c:2767)
[   26.784507][  T256]  ? __sys_sendmsg (net/socket.c:2799)
[   26.784509][  T256]  ? do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   26.784511][  T256]  ? entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   26.784513][  T256]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   26.784515][  T256]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   26.784516][  T256]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   26.784518][  T256]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   26.784520][  T256]  ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22))
[   26.784523][  T256]  ? __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)
[   26.784525][  T256]  ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1))
[   26.784526][  T256]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   26.784527][  T256]  ? ww_mutex_lock (kernel/locking/mutex.c:934)
[   26.784530][  T256]  ? __rtnl_newlink (net/core/rtnetlink.c:4063)
[   26.784532][  T256]  rtnl_newlink (net/core/rtnetlink.c:4215)
[   26.784534][  T256]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   26.784535][  T256]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   26.784537][  T256]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   26.784538][  T256]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   26.784540][  T256]  ? is_bpf_text_address (./include/linux/rcupdate.h:850 kernel/bpf/core.c:749)
[   26.784544][  T256]  ? is_bpf_text_address (./include/linux/rcupdate.h:882 kernel/bpf/core.c:751)
[   26.784545][  T256]  ? kernel_text_address (kernel/extable.c:125 kernel/extable.c:94)
[   26.784547][  T256]  ? __kernel_text_address (kernel/extable.c:79)
[   26.784548][  T256]  ? write_profile (profile.c:?)
[   26.784549][  T256]  ? unwind_get_return_address (arch/x86/kernel/unwind_orc.c:385 arch/x86/kernel/unwind_orc.c:380)
[   26.784551][  T256]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   26.784552][  T256]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   26.784554][  T256]  ? cap_capable (./include/trace/events/capability.h:26 (discriminator 22) security/commoncap.c:130 (discriminator 22))
[   26.784558][  T256]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   26.784559][  T256]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   26.784561][  T256]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   26.784562][  T256]  rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   26.784564][  T256]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   26.784565][  T256]  ? filter_irq_stacks (kernel/stacktrace.c:402)
[   26.784567][  T256]  ? stack_depot_save_flags (lib/stackdepot.c:609 lib/stackdepot.c:676)
[   26.784569][  T256]  netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   26.784571][  T256]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   26.784572][  T256]  ? lock_release (./include/trace/events/lock.h:68 (discriminator 22) kernel/locking/lockdep.c:5920 (discriminator 22))
[   26.784574][  T256]  ? netlink_ack (./include/linux/skbuff.h:2718)
[   26.784575][  T256]  ? __netlink_lookup (./include/linux/rcupdate.h:850 ./include/linux/rhashtable.h:709 net/netlink/af_netlink.c:499)
[   26.784578][  T256]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   26.784579][  T256]  ? lock_release (./include/trace/events/lock.h:68 (discriminator 22) kernel/locking/lockdep.c:5920 (discriminator 22))
[   26.784581][  T256]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   26.784583][  T256]  ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   26.784591][  T256]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   26.784593][  T256]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   26.784594][  T256]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   26.784596][  T256]  netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   26.784598][  T256]  ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7))
[   26.784600][  T256]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   26.784602][  T256]  ? lock_release (./include/trace/events/lock.h:68 (discriminator 22) kernel/locking/lockdep.c:5920 (discriminator 22))
[   26.784604][  T256]  ____sys_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4) net/socket.c:2713 (discriminator 4))
[   26.784605][  T256]  ? copy_msghdr_from_user (net/socket.c:2650)
[   26.784607][  T256]  ? get_timestamp.constprop.0 (./include/linux/netdevice.h:5399)
[   26.784609][  T256]  ? move_addr_to_kernel (net/socket.c:258)
[   26.784610][  T256]  ? filter_irq_stacks (kernel/stacktrace.c:402)
[   26.784613][  T256]  ___sys_sendmsg (net/socket.c:2767)
[   26.784614][  T256]  ? copy_msghdr_from_user (net/socket.c:2619)
[   26.784619][  T256]  __sys_sendmsg (net/socket.c:2799)
[   26.784621][  T256]  ? __sys_sendmsg_sock (net/socket.c:2780)
[   26.784624][  T256]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   26.784626][  T256]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   26.784627][  T256]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   26.784629][  T256]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   26.784631][  T256] RIP: 0033:0x7fc95e8b154e
[   26.784633][  T256] 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
[   26.784635][  T256] RSP: 002b:00007fff38d8c180 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
[   26.784638][  T256] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007fc95e8b154e
[   26.784640][  T256] RDX: 0000000000000000 RSI: 00007fff38d8c230 RDI: 0000000000000005
[   26.784641][  T256] RBP: 00007fff38d8c190 R08: 0000000000000000 R09: 0000000000000000
[   26.784641][  T256] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a912d63
[   26.784642][  T256] R13: 00000000004a1620 R14: 0000000000000000 R15: 00007fff38d8c8f0
| [   33.060717][  T280] softirqs last disabled at (0): 0x0
| [   33.060719][  T280] Preemption disabled at:
| [   33.060720][  T280] 0x0
| [   33.060727][  T280] Tainted: [W]=WARN
[   33.060728][  T280] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   33.060729][  T280] Call Trace:
[   33.060731][  T280]  <TASK>
[   33.060732][  T280]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   33.060738][  T280]  __might_resched.cold (kernel/sched/core.c:9234)
[   33.060741][  T280]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   33.060745][  T280]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   33.060749][  T280]  __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))
[   33.060752][  T280]  ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[   33.060755][  T280]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   33.060759][  T280]  ? 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)
[   33.060761][  T280]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   33.060762][  T280]  put_chars (drivers/char/virtio_console.c:1176)
[   33.060764][  T280]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   33.060766][  T280]  ? printk_get_next_message (kernel/printk/printk.c:3072)
[   33.060769][  T280]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   33.060773][  T280]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   33.060774][  T280]  ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[   33.060776][  T280]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   33.060777][  T280]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   33.060780][  T280]  console_emit_next_record (kernel/printk/printk.c:3183)
[   33.060782][  T280]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   33.060784][  T280]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   33.060786][  T280]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   33.060787][  T280]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   33.060789][  T280]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   33.060791][  T280]  ? console_flush_one_record (kernel/printk/printk.c:3247)
[   33.060792][  T280]  console_flush_one_record (kernel/printk/printk.c:3268)
[   33.060794][  T280]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   33.060797][  T280]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   33.060799][  T280]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   33.060800][  T280]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   33.060802][  T280]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   33.060803][  T280]  ? lock_release (./include/trace/events/lock.h:68 (discriminator 22) kernel/locking/lockdep.c:5920 (discriminator 22))
[   33.060805][  T280]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   33.060806][  T280]  ? __rcu_read_lock (kernel/rcu/tree_plugin.h:391 (discriminator 6) kernel/rcu/tree_plugin.h:414 (discriminator 6))
[   33.060808][  T280]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   33.060810][  T280]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   33.060812][  T280]  vprintk_emit (kernel/printk/printk.c:2479)
[   33.060815][  T280]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   33.060816][  T280]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   33.060818][  T280]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[   33.060820][  T280]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:78)
[   33.060822][  T280]  _printk (kernel/printk/printk.c:2504)
[   33.060825][  T280]  ? snapshot_read.cold (user.c:?)
[   33.060827][  T280]  ? ipv6_mc_down (net/ipv6/mcast.c:1137 net/ipv6/mcast.c:2792)
[   33.060831][  T280] br_set_state (net/bridge/br_stp.c:57 (discriminator 2)) bridge
[   33.060844][  T280] br_stp_disable_port (net/bridge/br_stp_if.c:106) bridge
[   33.060851][  T280] br_device_event (net/bridge/br.c:111) bridge
[   33.060860][  T280]  ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:211 (discriminator 1) kernel/locking/spinlock.c:221 (discriminator 1))
[   33.060863][  T280]  ? _sub_I_65535_1+0x4d0/0x4d0 stp
[   33.060865][  T280]  ? addrconf_notify (net/ipv6/addrconf.c:3812)
[   33.060868][  T280]  notifier_call_chain (kernel/notifier.c:85)
[   33.060871][  T280]  __dev_notify_flags (net/core/dev.c:2313 net/core/dev.c:2327 net/core/dev.c:9855)
[   33.060875][  T280]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[   33.060876][  T280]  ? netif_change_name (net/core/dev.c:1517)
[   33.060878][  T280]  ? netif_set_allmulti (./include/net/netdev_lock.h:30 (discriminator 1))
[   33.060880][  T280]  ? __kernel_text_address (kernel/extable.c:79)
[   33.060882][  T280]  ? write_profile (profile.c:?)
[   33.060884][  T280]  ? unwind_get_return_address (arch/x86/kernel/unwind_orc.c:385 arch/x86/kernel/unwind_orc.c:380)
[   33.060887][  T280]  netif_change_flags (net/core/dev.c:9882)
[   33.060890][  T280]  do_setlink.isra.0 (net/core/rtnetlink.c:3266 (discriminator 1))
[   33.060892][  T280]  ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1))
[   33.060894][  T280]  ? rtnl_link_get_size (net/core/rtnetlink.c:747)
[   33.060895][  T280]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   33.060897][  T280]  ? stack_depot_save_flags (lib/stackdepot.c:609 lib/stackdepot.c:676)
[   33.060900][  T280]  ? kasan_save_stack (mm/kasan/common.c:58)
[   33.060903][  T280]  ? kasan_save_stack (mm/kasan/common.c:57)
[   33.060904][  T280]  ? kasan_save_track (mm/kasan/common.c:78)
[   33.060906][  T280]  ? __kasan_kmalloc (mm/kasan/common.c:398 mm/kasan/common.c:415)
[   33.060907][  T280]  ? __kmalloc_cache_noprof (./include/linux/kasan.h:263 mm/slub.c:5563)
[   33.060909][  T280]  ? rtnl_newlink (./include/linux/slab.h:991 (discriminator 1) net/core/rtnetlink.c:4113 (discriminator 1))
[   33.060910][  T280]  ? rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   33.060911][  T280]  ? netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   33.060914][  T280]  ? netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   33.060915][  T280]  ? netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   33.060916][  T280]  ? ____sys_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4) net/socket.c:2713 (discriminator 4))
[   33.060919][  T280]  ? ___sys_sendmsg (net/socket.c:2767)
[   33.060920][  T280]  ? __sys_sendmsg (net/socket.c:2799)
[   33.060921][  T280]  ? do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   33.060923][  T280]  ? entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   33.060926][  T280]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   33.060928][  T280]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   33.060929][  T280]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   33.060930][  T280]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   33.060932][  T280]  ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22))
[   33.060935][  T280]  ? __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)
[   33.060937][  T280]  ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1))
[   33.060938][  T280]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   33.060940][  T280]  ? ww_mutex_lock (kernel/locking/mutex.c:934)
[   33.060942][  T280]  ? __rtnl_newlink (net/core/rtnetlink.c:4063)
[   33.060944][  T280]  rtnl_newlink (net/core/rtnetlink.c:4215)
[   33.060945][  T280]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   33.060947][  T280]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   33.060948][  T280]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   33.060950][  T280]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   33.060952][  T280]  ? is_bpf_text_address (./include/linux/rcupdate.h:850 kernel/bpf/core.c:749)
[   33.060955][  T280]  ? is_bpf_text_address (./include/linux/rcupdate.h:882 kernel/bpf/core.c:751)
[   33.060957][  T280]  ? kernel_text_address (kernel/extable.c:125 kernel/extable.c:94)
[   33.060958][  T280]  ? __kernel_text_address (kernel/extable.c:79)
[   33.060959][  T280]  ? write_profile (profile.c:?)
[   33.060960][  T280]  ? unwind_get_return_address (arch/x86/kernel/unwind_orc.c:385 arch/x86/kernel/unwind_orc.c:380)
[   33.060961][  T280]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   33.060963][  T280]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   33.060965][  T280]  ? cap_capable (./include/trace/events/capability.h:26 (discriminator 22) security/commoncap.c:130 (discriminator 22))
[   33.060968][  T280]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   33.060970][  T280]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   33.060971][  T280]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   33.060973][  T280]  rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   33.060974][  T280]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   33.060976][  T280]  ? filter_irq_stacks (kernel/stacktrace.c:402)
[   33.060977][  T280]  ? stack_depot_save_flags (lib/stackdepot.c:609 lib/stackdepot.c:676)
[   33.060979][  T280]  netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   33.060981][  T280]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   33.060982][  T280]  ? lock_release (./include/trace/events/lock.h:68 (discriminator 22) kernel/locking/lockdep.c:5920 (discriminator 22))
[   33.060983][  T280]  ? netlink_ack (./include/linux/skbuff.h:2718)
[   33.060985][  T280]  ? __netlink_lookup (./include/linux/rcupdate.h:850 ./include/linux/rhashtable.h:709 net/netlink/af_netlink.c:499)
[   33.060987][  T280]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   33.060989][  T280]  ? lock_release (./include/trace/events/lock.h:68 (discriminator 22) kernel/locking/lockdep.c:5920 (discriminator 22))
[   33.060991][  T280]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   33.060992][  T280]  ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   33.060994][  T280]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   33.060996][  T280]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   33.060997][  T280]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   33.060999][  T280]  netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   33.061001][  T280]  ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7))
[   33.061003][  T280]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   33.061004][  T280]  ? lock_release (./include/trace/events/lock.h:68 (discriminator 22) kernel/locking/lockdep.c:5920 (discriminator 22))
[   33.061006][  T280]  ____sys_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4) net/socket.c:2713 (discriminator 4))
[   33.061008][  T280]  ? copy_msghdr_from_user (net/socket.c:2650)
[   33.061009][  T280]  ? get_timestamp.constprop.0 (./include/linux/netdevice.h:5399)
[   33.061011][  T280]  ? move_addr_to_kernel (net/socket.c:258)
[   33.061012][  T280]  ? filter_irq_stacks (kernel/stacktrace.c:402)
[   33.061015][  T280]  ___sys_sendmsg (net/socket.c:2767)
[   33.061016][  T280]  ? copy_msghdr_from_user (net/socket.c:2619)
[   33.061021][  T280]  __sys_sendmsg (net/socket.c:2799)
[   33.061023][  T280]  ? __sys_sendmsg_sock (net/socket.c:2780)
[   33.061025][  T280]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   33.061027][  T280]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   33.061029][  T280]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   33.061031][  T280]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   33.061032][  T280] RIP: 0033:0x7f01dda4b54e
[   33.061034][  T280] 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
[   33.061036][  T280] RSP: 002b:00007ffdf1e5d4e0 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
[   33.061039][  T280] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f01dda4b54e
[   33.061041][  T280] RDX: 0000000000000000 RSI: 00007ffdf1e5d590 RDI: 0000000000000005
[   33.061041][  T280] RBP: 00007ffdf1e5d4f0 R08: 0000000000000000 R09: 0000000000000000
[   33.061042][  T280] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a912d69


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