======================================
| [   11.609243][  T236] softirqs last disabled at (14216): __alloc_skb (./include/linux/bottom_half.h:20 (discriminator 2) net/core/skbuff.c:697 (discriminator 2))
| [   11.609246][  T236] Preemption disabled at:
| [   11.609246][  T236] vprintk_emit (kernel/printk/printk.c:2471)
| [   11.609256][  T236] Tainted: [W]=WARN
[   11.609256][  T236] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   11.609258][  T236] Call Trace:
[   11.609260][  T236]  <TASK>
[   11.609261][  T236]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   11.609267][  T236]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   11.609270][  T236]  __might_resched.cold (kernel/sched/core.c:9234)
[   11.609274][  T236]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   11.609278][  T236]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   11.609284][  T236]  __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))
[   11.609286][  T236]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   11.609292][  T236]  ? 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)
[   11.609294][  T236]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   11.609298][  T236]  put_chars (drivers/char/virtio_console.c:1176)
[   11.609300][  T236]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   11.609305][  T236]  ? validate_chain (kernel/locking/lockdep.c:159 kernel/locking/lockdep.c:191 kernel/locking/lockdep.c:3928)
[   11.609308][  T236]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   11.609311][  T236]  ? mark_usage (kernel/locking/lockdep.c:4690)
[   11.609313][  T236]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   11.609315][  T236]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   11.609319][  T236]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   11.609321][  T236]  ? console_emit_next_record (kernel/printk/printk.c:3095 (discriminator 2) kernel/printk/printk.c:3182 (discriminator 2))
[   11.609324][  T236]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   11.609328][  T236]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   11.609332][  T236]  console_emit_next_record (kernel/printk/printk.c:3183)
[   11.609336][  T236]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   11.609338][  T236]  ? 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))
[   11.609341][  T236]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   11.609343][  T236]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   11.609347][  T236]  console_flush_one_record (kernel/printk/printk.c:3268)
[   11.609351][  T236]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   11.609354][  T236]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   11.609359][  T236]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   11.609362][  T236]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   11.609364][  T236]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   11.609366][  T236]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   11.609370][  T236]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   11.609372][  T236]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   11.609375][  T236]  vprintk_emit (kernel/printk/printk.c:2479)
[   11.609379][  T236]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   11.609381][  T236]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   11.609383][  T236]  ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:211 (discriminator 1) kernel/locking/spinlock.c:221 (discriminator 1))
[   11.609387][  T236]  ? mark_held_locks (kernel/locking/lockdep.c:4341)
[   11.609391][  T236]  _printk (kernel/printk/printk.c:2504)
[   11.609394][  T236]  ? snapshot_read.cold (user.c:?)
[   11.609398][  T236]  ? br_multicast_flood (??:?) bridge
[   11.609411][  T236]  ? do_setlink.isra.0 (net/core/rtnetlink.c:3273 (discriminator 1))
[   11.609413][  T236]  ? rtnl_newlink (net/core/rtnetlink.c:4215)
[   11.609414][  T236]  ? rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   11.609418][  T236] br_set_state (net/bridge/br_stp.c:57 (discriminator 2)) bridge
[   11.609429][  T236] br_init_port (net/bridge/br_stp_if.c:39) bridge
[   11.609437][  T236] new_nbp (net/bridge/br_if.c:449) bridge
[   11.609446][  T236] br_add_if (net/bridge/br_if.c:592) bridge
[   11.609453][  T236]  ? is_bpf_text_address (./include/linux/rcupdate.h:882 kernel/bpf/core.c:751)
[   11.609457][  T236]  ? kernel_text_address (kernel/extable.c:125 kernel/extable.c:94)
[   11.609460][  T236]  ? __kernel_text_address (kernel/extable.c:79)
[   11.609464][  T236]  do_set_master (net/core/rtnetlink.c:3071)
[   11.609475][  T236]  do_setlink.isra.0 (net/core/rtnetlink.c:3273 (discriminator 1))
[   11.609478][  T236]  ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1))
[   11.609481][  T236]  ? rtnl_link_get_size (net/core/rtnetlink.c:747)
[   11.609482][  T236]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380)
[   11.609485][  T236]  ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2))
[   11.609488][  T236]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   11.609491][  T236]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   11.609493][  T236]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   11.609496][  T236]  ? kasan_save_stack (mm/kasan/common.c:58)
[   11.609498][  T236]  ? kasan_save_stack (mm/kasan/common.c:57)
[   11.609500][  T236]  ? kasan_save_track (mm/kasan/common.c:78)
[   11.609503][  T236]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   11.609505][  T236]  ? netlink_seq_next (net/netlink/af_netlink.c:2684)
[   11.609508][  T236]  ? ___sys_sendmsg (net/socket.c:2757)
[   11.609512][  T236]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   11.609514][  T236]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   11.609517][  T236]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   11.609519][  T236]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   11.609521][  T236]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   11.609523][  T236]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   11.609525][  T236]  ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22))
[   11.609529][  T236]  ? __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)
[   11.609530][  T236]  ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1))
[   11.609533][  T236]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   11.609536][  T236]  ? ww_mutex_lock (kernel/locking/mutex.c:934)
[   11.609538][  T236]  ? nla_get_range_signed (lib/nlattr.c:270)
[   11.609543][  T236]  ? __rtnl_newlink (net/core/rtnetlink.c:4063)
[   11.609548][  T236]  rtnl_newlink (net/core/rtnetlink.c:4215)
[   11.609554][  T236]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   11.609556][  T236]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   11.609560][  T236]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   11.609562][  T236]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   11.609564][  T236]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   11.609566][  T236]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   11.609570][  T236]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   11.609572][  T236]  rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   11.609575][  T236]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   11.609576][  T236]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   11.609581][  T236]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   11.609583][  T236]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   11.609586][  T236]  netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   11.609588][  T236]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   11.609591][  T236]  ? netlink_ack (./include/linux/skbuff.h:2718)
[   11.609597][  T236]  ? 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))
[   11.609599][  T236]  ? 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))
[   11.609603][  T236]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   11.609607][  T236]  ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   11.609610][  T236]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   11.609614][  T236]  netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   11.609618][  T236]  ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7))
[   11.609622][  T236]  ? __might_fault (mm/memory.c:7482 (discriminator 5))
[   11.609627][  T236]  ____sys_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4) net/socket.c:2713 (discriminator 4))
[   11.609629][  T236]  ? copy_msghdr_from_user (net/socket.c:2650)
[   11.609632][  T236]  ? get_timestamp.constprop.0 (./include/linux/netdevice.h:5399)
[   11.609634][  T236]  ? move_addr_to_kernel (net/socket.c:258)
[   11.609641][  T236]  ___sys_sendmsg (net/socket.c:2767)
[   11.609644][  T236]  ? copy_msghdr_from_user (net/socket.c:2619)
[   11.609660][  T236]  __sys_sendmsg (net/socket.c:2799)
[   11.609663][  T236]  ? __sys_sendmsg_sock (net/socket.c:2780)
[   11.609670][  T236]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   11.609673][  T236]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   11.609676][  T236]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   11.609679][  T236]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   11.609681][  T236] RIP: 0033:0x7fd07b96b54e
[   11.609685][  T236] 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
[   11.609687][  T236] RSP: 002b:00007ffe726c5920 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
[   11.609690][  T236] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007fd07b96b54e
[   11.609691][  T236] RDX: 0000000000000000 RSI: 00007ffe726c59d0 RDI: 0000000000000005
[   11.609692][  T236] RBP: 00007ffe726c5930 R08: 0000000000000000 R09: 0000000000000000
[   11.609693][  T236] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a918c1b
[   11.609693][  T236] R13: 00000000004a1620 R14: 0000000000000000 R15: 00007ffe726c6090
| [   21.934671][   T39] softirqs last disabled at (54432): br_port_carrier_check (./include/linux/spinlock.h:353 net/bridge/br_if.c:87) bridge
| [   21.934679][   T39] Preemption disabled at:
| [   21.934680][   T39] 0x0
| [   21.934691][   T39] Tainted: [W]=WARN
[   21.934691][   T39] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   21.934693][   T39] Workqueue: events_unbound linkwatch_event
[   21.934697][   T39] Call Trace:
[   21.934698][   T39]  <TASK>
[   21.934700][   T39]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   21.934706][   T39]  __might_resched.cold (kernel/sched/core.c:9234)
[   21.934710][   T39]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   21.934715][   T39]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   21.934720][   T39]  __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))
[   21.934722][   T39]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   21.934728][   T39]  ? 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)
[   21.934731][   T39]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   21.934734][   T39]  put_chars (drivers/char/virtio_console.c:1176)
[   21.934737][   T39]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   21.934740][   T39]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   21.934744][   T39]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   21.934746][   T39]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   21.934751][   T39]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   21.934753][   T39]  ? mark_usage (kernel/locking/lockdep.c:4690)
[   21.934755][   T39]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   21.934757][   T39]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   21.934761][   T39]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   21.934762][   T39]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   21.934766][   T39]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   21.934770][   T39]  console_emit_next_record (kernel/printk/printk.c:3183)
[   21.934774][   T39]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   21.934776][   T39]  ? 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))
[   21.934779][   T39]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   21.934781][   T39]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   21.934785][   T39]  console_flush_one_record (kernel/printk/printk.c:3268)
[   21.934790][   T39]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   21.934791][   T39]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   21.934797][   T39]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   21.934799][   T39]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   21.934801][   T39]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   21.934804][   T39]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   21.934807][   T39]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   21.934809][   T39]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   21.934812][   T39]  vprintk_emit (kernel/printk/printk.c:2479)
[   21.934816][   T39]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   21.934819][   T39]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   21.934822][   T39]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   21.934825][   T39]  _printk (kernel/printk/printk.c:2504)
[   21.934829][   T39]  ? snapshot_read.cold (user.c:?)
[   21.934834][   T39]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   21.934838][   T39] br_set_state (net/bridge/br_stp.c:57 (discriminator 2)) bridge
[   21.934848][   T39] br_init_port (net/bridge/br_stp_if.c:39) bridge
[   21.934856][   T39] br_stp_enable_port (net/bridge/br_stp_if.c:93) bridge
[   21.934863][   T39] br_port_carrier_check (net/bridge/br_if.c:90) bridge
[   21.934872][   T39] br_device_event (net/bridge/br.c:101) bridge
[   21.934881][   T39]  ? _sub_I_65535_1+0x4d0/0x4d0 stp
[   21.934882][   T39]  ? nlmsg_notify (./include/net/netlink.h:1165 ./include/net/netlink.h:1184 net/netlink/af_netlink.c:2599)
[   21.934889][   T39]  notifier_call_chain (kernel/notifier.c:85)
[   21.934895][   T39]  netif_state_change (net/core/dev.c:1625)
[   21.934899][   T39]  ? call_netdevice_notifiers_info (./include/net/net_namespace.h:422 (discriminator 7))
[   21.934904][   T39]  ? linkwatch_do_dev (net/core/link_watch.c:182 net/core/link_watch.c:166)
[   21.934906][   T39]  __linkwatch_run_queue (net/core/link_watch.c:240)
[   21.934909][   T39]  ? linkwatch_do_dev (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   21.934912][   T39]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   21.934916][   T39]  linkwatch_event (net/core/link_watch.c:314 (discriminator 11))
[   21.934918][   T39]  ? __linkwatch_run_queue (./include/linux/list.h:577)
[   21.934922][   T39]  process_one_work (kernel/workqueue.c:3387)
[   21.934928][   T39]  ? __queue_delayed_work (kernel/workqueue.c:2622)
[   21.934931][   T39]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   21.934938][   T39]  worker_thread (kernel/workqueue.c:3470 kernel/workqueue.c:3551)
[   21.934945][   T39]  ? rescuer_thread (./include/linux/list.h:419 (discriminator 3))
[   21.934947][   T39]  kthread (kernel/kthread.c:436)
[   21.934949][   T39]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[   21.934952][   T39]  ? kthread_affine_preferred (kernel/kthread.c:857)
[   21.934955][   T39]  ret_from_fork (arch/x86/kernel/process.c:158)
[   21.934959][   T39]  ? arch_exit_to_user_mode_prepare.isra.0 (arch/x86/entry/vdso/vma.c:80 (discriminator 1))
[   21.934962][   T39]  ? __switch_to (arch/x86/kernel/process_64.c:403 arch/x86/kernel/process_64.c:663)
[   21.934965][   T39]  ? kthread_affine_preferred (kernel/kthread.c:857)
[   21.934968][   T39]  ret_from_fork_asm (arch/x86/entry/entry_64.S:245)
| [   27.002291][    C0] softirqs last disabled at (457983): __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767)
| [   27.002293][    C0] Preemption disabled at:
| [   27.002294][    C0] schedule_preempt_disabled (kernel/sched/core.c:7420)
| [   27.002303][    C0] Tainted: [W]=WARN
[   27.002304][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   27.002305][    C0] Call Trace:
[   27.002307][    C0]  <IRQ>
[   27.002308][    C0]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   27.002314][    C0]  ? schedule_preempt_disabled (kernel/sched/core.c:7420)
[   27.002315][    C0]  __might_resched.cold (kernel/sched/core.c:9234)
[   27.002319][    C0]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   27.002322][    C0]  ? __asan_memcpy (mm/kasan/shadow.c:106 (discriminator 1))
[   27.002325][    C0]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   27.002328][    C0]  __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))
[   27.002331][    C0]  ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[   27.002334][    C0]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   27.002337][    C0]  ? 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)
[   27.002339][    C0]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   27.002341][    C0]  put_chars (drivers/char/virtio_console.c:1176)
[   27.002343][    C0]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   27.002344][    C0]  ? console_prepend_replay (kernel/printk/printk.c:3005)
[   27.002348][    C0]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   27.002351][    C0]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   27.002353][    C0]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   27.002354][    C0]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   27.002356][    C0]  console_emit_next_record (kernel/printk/printk.c:3183)
[   27.002359][    C0]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   27.002361][    C0]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   27.002362][    C0]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   27.002364][    C0]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   27.002366][    C0]  ? console_flush_one_record (kernel/printk/printk.c:3247)
[   27.002367][    C0]  console_flush_one_record (kernel/printk/printk.c:3268)
[   27.002370][    C0]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   27.002372][    C0]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   27.002374][    C0]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   27.002375][    C0]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   27.002377][    C0]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   27.002379][    C0]  ? lock_release (./include/trace/events/lock.h:68 (discriminator 22) kernel/locking/lockdep.c:5920 (discriminator 22))
[   27.002380][    C0]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   27.002382][    C0]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   27.002383][    C0]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   27.002385][    C0]  vprintk_emit (kernel/printk/printk.c:2479)
[   27.002388][    C0]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   27.002389][    C0]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   27.002391][    C0]  ? lock_release (./include/trace/events/lock.h:68 (discriminator 22) kernel/locking/lockdep.c:5920 (discriminator 22))
[   27.002393][    C0]  ? x86_64_start_kernel (arch/x86/kernel/head64.c:264)
[   27.002397][    C0]  _printk (kernel/printk/printk.c:2504)
[   27.002400][    C0]  ? snapshot_read.cold (user.c:?)
[   27.002402][    C0]  ? arch_stack_walk (arch/x86/kernel/stacktrace.c:25)
[   27.002406][    C0]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   27.002408][    C0]  ? nbcon_cpu_emergency_enter (./include/linux/instrumented.h:112 ./include/linux/atomic/atomic-instrumented.h:435 kernel/printk/nbcon.c:1723)
[   27.002410][    C0]  print_irq_inversion_bug.part.0 (kernel/locking/lockdep.c:4097 (discriminator 1))
[   27.002412][    C0]  mark_lock_irq (kernel/locking/lockdep.c:4095 kernel/locking/lockdep.c:4174 kernel/locking/lockdep.c:4310)
[   27.002415][    C0]  mark_lock (kernel/locking/lockdep.c:4769)
[   27.002417][    C0]  mark_usage (kernel/locking/lockdep.c:4658)
[   27.002419][    C0]  __lock_acquire (kernel/locking/lockdep.c:5208)
[   27.002421][    C0]  lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   27.002423][    C0]  ? br_forward_delay_timer_expired (./include/linux/spinlock.h:347 net/bridge/br_stp_timer.c:88) bridge
[   27.002435][    C0]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   27.002437][    C0]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   27.002438][    C0]  ? br_message_age_timer_expired (net/bridge/br_stp_timer.c:54) bridge
[   27.002445][    C0]  _raw_spin_lock (./include/linux/spinlock_api_smp.h:190 (discriminator 1) kernel/locking/spinlock.c:173 (discriminator 1))
[   27.002446][    C0]  ? br_forward_delay_timer_expired (./include/linux/spinlock.h:347 net/bridge/br_stp_timer.c:88) bridge
[   27.002452][    C0] br_forward_delay_timer_expired (./include/linux/spinlock.h:347 net/bridge/br_stp_timer.c:88) bridge
[   27.002458][    C0]  ? br_message_age_timer_expired (net/bridge/br_stp_timer.c:54) bridge
[   27.002464][    C0]  call_timer_fn (kernel/time/timer.c:1748)
[   27.002468][    C0]  ? detach_if_pending (./include/linux/list.h:1159)
[   27.002470][    C0]  ? debug_object_active_state (lib/debugobjects.c:1122)
[   27.002473][    C0]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   27.002475][    C0]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   27.002477][    C0]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   27.002479][    C0]  __run_timers (kernel/time/timer.c:1799 kernel/time/timer.c:2374)
[   27.002481][    C0]  ? br_message_age_timer_expired (net/bridge/br_stp_timer.c:54) bridge
[   27.002487][    C0]  ? __bpf_trace_itimer_expire (./include/trace/events/timer.h:407)
[   27.002489][    C0]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   27.002491][    C0]  ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[   27.002494][    C0]  run_timer_softirq (kernel/time/timer.c:2386 kernel/time/timer.c:2395 kernel/time/timer.c:2403)
[   27.002496][    C0]  ? __run_timers (./include/trace/events/timer.h:138 (discriminator 19))
[   27.002497][    C0]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[   27.002500][    C0]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   27.002501][    C0]  handle_softirqs (kernel/softirq.c:645)
[   27.002503][    C0]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   27.002505][    C0]  ? _local_bh_enable (kernel/softirq.c:428 (discriminator 1))
[   27.002506][    C0]  __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767)
[   27.002508][    C0]  irq_exit_rcu (kernel/softirq.c:784)
[   27.002509][    C0]  sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1062 (discriminator 37) arch/x86/kernel/apic/apic.c:1062 (discriminator 37))
[   27.002512][    C0]  </IRQ>
[   27.002513][    C0]  <TASK>
[   27.002513][    C0]  ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:470 (discriminator 2) kernel/locking/lockdep.c:4427 (discriminator 2))
[   27.002515][    C0]  asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:674)
[   27.002517][    C0] RIP: 0010:pv_native_safe_halt (./arch/x86/include/asm/irqflags.h:48 arch/x86/kernel/paravirt.c:63)
[   27.002520][    C0] Code: 48 8b 3d 94 d2 f5 01 e8 1f 00 00 00 48 2b 05 58 93 95 00 c3 0f 1f 80 00 00 00 00 f3 0f 1e fa eb 07 0f 00 2d 13 86 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 d2 f5 01 	mov    0x1f5d294(%rip),%rdi        # 0x1f5d29b
   7:	e8 1f 00 00 00       	call   0x2b
   c:	48 2b 05 58 93 95 00 	sub    0x959358(%rip),%rax        # 0x95936b
  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 86 11 00 	verw   0x118613(%rip)        # 0x11863b
  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
[   27.002521][    C0] RSP: 0018:ffffffffb3207cf8 EFLAGS: 00000296
[   27.002530][    C0] RAX: 000000000006fcfd RBX: ffffffffb321c600 RCX: ffffffffb02f0307
[   27.002531][    C0] RDX: ffffffffb321c600 RSI: ffffffffb3038af6 RDI: ffffffffb2a8d8e0
[   27.002532][    C0] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
[   27.002533][    C0] R10: 0000000000000000 R11: 0000000000000001 R12: 1ffffffff6640fa2
[   27.002534][    C0] R13: 0000000000000000 R14: dffffc0000000000 R15: 0000000000014770
[   27.002536][    C0]  ? cpuidle_idle_call.constprop.0 (kernel/sched/idle.c:199)
[   27.002539][    C0]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4488)
[   27.002540][    C0]  default_idle (./arch/x86/include/asm/paravirt.h:62 arch/x86/kernel/process.c:768)
[   27.002542][    C0]  default_idle_call (kernel/sched/idle.c:122)
[   27.002544][    C0]  cpuidle_idle_call.constprop.0 (kernel/sched/idle.c:199)
[   27.002545][    C0]  ? arch_cpu_idle_exit+0x40/0x40
[   27.002547][    C0]  ? mark_tsc_async_resets (arch/x86/kernel/tsc_sync.c:49)
[   27.002549][    C0]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[   27.002550][    C0]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   27.002552][    C0]  do_idle (kernel/sched/idle.c:355)
[   27.002554][    C0]  cpu_startup_entry (kernel/sched/idle.c:454)
[   27.002555][    C0]  rest_init (init/main.c:727)
[   27.002558][    C0]  ? __cpuidle_text_end (??:?)
[   27.002560][    C0]  ? rest_init (init/main.c:727)
[   27.002562][    C0]  ? acpi_hw_set_mode (drivers/acpi/acpica/hwacpi.c:72 (discriminator 1))
[   27.002565][    C0]  ? cpus_read_unlock (./include/linux/percpu-rwsem.h:125 (discriminator 1) kernel/cpu.c:502 (discriminator 1))
[   27.002568][    C0]  ? acpi_enable (drivers/acpi/acpica/evxfevnt.c:47)
[   27.002570][    C0]  start_kernel (init/main.c:1185)
[   27.002572][    C0]  x86_64_start_reservations (arch/x86/kernel/head64.c:310)
[   27.002574][    C0]  x86_64_start_kernel (arch/x86/kernel/head64.c:291)
[   27.002576][    C0]  common_startup_64 (arch/x86/kernel/head_64.S:418)
| [   27.071393][    C0]
| [   27.071466][    C0]
| [   27.071466][    C0] stack backtrace:
| [   27.071757][    C0] Tainted: [W]=WARN
[   27.071758][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   27.071760][    C0] Call Trace:
[   27.071761][    C0]  <IRQ>
[   27.071762][    C0]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   27.071766][    C0]  print_irq_inversion_bug.part.0.cold (kernel/locking/lockdep.c:4141)
[   27.071769][    C0]  mark_lock_irq (kernel/locking/lockdep.c:4095 kernel/locking/lockdep.c:4174 kernel/locking/lockdep.c:4310)
[   27.071772][    C0]  mark_lock (kernel/locking/lockdep.c:4769)
[   27.071774][    C0]  mark_usage (kernel/locking/lockdep.c:4658)
[   27.071776][    C0]  __lock_acquire (kernel/locking/lockdep.c:5208)
[   27.071778][    C0]  lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   27.071779][    C0]  ? br_forward_delay_timer_expired (./include/linux/spinlock.h:347 net/bridge/br_stp_timer.c:88) bridge
[   27.071787][    C0]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   27.071790][    C0]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   27.071792][    C0]  ? br_message_age_timer_expired (net/bridge/br_stp_timer.c:54) bridge
[   27.071797][    C0]  _raw_spin_lock (./include/linux/spinlock_api_smp.h:190 (discriminator 1) kernel/locking/spinlock.c:173 (discriminator 1))
[   27.071799][    C0]  ? br_forward_delay_timer_expired (./include/linux/spinlock.h:347 net/bridge/br_stp_timer.c:88) bridge
[   27.071805][    C0] br_forward_delay_timer_expired (./include/linux/spinlock.h:347 net/bridge/br_stp_timer.c:88) bridge
[   27.071811][    C0]  ? br_message_age_timer_expired (net/bridge/br_stp_timer.c:54) bridge
[   27.071817][    C0]  call_timer_fn (kernel/time/timer.c:1748)
[   27.071819][    C0]  ? detach_if_pending (./include/linux/list.h:1159)
[   27.071821][    C0]  ? debug_object_active_state (lib/debugobjects.c:1122)
[   27.071824][    C0]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   27.071826][    C0]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   27.071828][    C0]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   27.071830][    C0]  __run_timers (kernel/time/timer.c:1799 kernel/time/timer.c:2374)
[   27.071832][    C0]  ? br_message_age_timer_expired (net/bridge/br_stp_timer.c:54) bridge
[   27.071838][    C0]  ? __bpf_trace_itimer_expire (./include/trace/events/timer.h:407)
[   27.071840][    C0]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   27.071843][    C0]  ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[   27.071845][    C0]  run_timer_softirq (kernel/time/timer.c:2386 kernel/time/timer.c:2395 kernel/time/timer.c:2403)
[   27.071847][    C0]  ? __run_timers (./include/trace/events/timer.h:138 (discriminator 19))
[   27.071849][    C0]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[   27.071851][    C0]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   27.071853][    C0]  handle_softirqs (kernel/softirq.c:645)
[   27.071855][    C0]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   27.071856][    C0]  ? _local_bh_enable (kernel/softirq.c:428 (discriminator 1))
[   27.071858][    C0]  __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767)
[   27.071859][    C0]  irq_exit_rcu (kernel/softirq.c:784)
[   27.071861][    C0]  sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1062 (discriminator 37) arch/x86/kernel/apic/apic.c:1062 (discriminator 37))
[   27.071862][    C0]  </IRQ>
[   27.071863][    C0]  <TASK>
[   27.071864][    C0]  ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:470 (discriminator 2) kernel/locking/lockdep.c:4427 (discriminator 2))
[   27.071865][    C0]  asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:674)
[   27.071867][    C0] RIP: 0010:pv_native_safe_halt (./arch/x86/include/asm/irqflags.h:48 arch/x86/kernel/paravirt.c:63)
[   27.071869][    C0] Code: 48 8b 3d 94 d2 f5 01 e8 1f 00 00 00 48 2b 05 58 93 95 00 c3 0f 1f 80 00 00 00 00 f3 0f 1e fa eb 07 0f 00 2d 13 86 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 d2 f5 01 	mov    0x1f5d294(%rip),%rdi        # 0x1f5d29b
   7:	e8 1f 00 00 00       	call   0x2b
   c:	48 2b 05 58 93 95 00 	sub    0x959358(%rip),%rax        # 0x95936b
  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 86 11 00 	verw   0x118613(%rip)        # 0x11863b
  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
[   27.071871][    C0] RSP: 0018:ffffffffb3207cf8 EFLAGS: 00000296
[   27.071873][    C0] RAX: 000000000006fcfd RBX: ffffffffb321c600 RCX: ffffffffb02f0307
[   27.071875][    C0] RDX: ffffffffb321c600 RSI: ffffffffb3038af6 RDI: ffffffffb2a8d8e0
[   27.071875][    C0] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
[   27.071876][    C0] R10: 0000000000000000 R11: 0000000000000001 R12: 1ffffffff6640fa2
[   27.071877][    C0] R13: 0000000000000000 R14: dffffc0000000000 R15: 0000000000014770
[   27.071879][    C0]  ? cpuidle_idle_call.constprop.0 (kernel/sched/idle.c:199)
[   27.071881][    C0]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4488)
[   27.071882][    C0]  default_idle (./arch/x86/include/asm/paravirt.h:62 arch/x86/kernel/process.c:768)
[   27.071884][    C0]  default_idle_call (kernel/sched/idle.c:122)
[   27.071886][    C0]  cpuidle_idle_call.constprop.0 (kernel/sched/idle.c:199)
[   27.071887][    C0]  ? arch_cpu_idle_exit+0x40/0x40
[   27.071889][    C0]  ? mark_tsc_async_resets (arch/x86/kernel/tsc_sync.c:49)
[   27.071891][    C0]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[   27.071892][    C0]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   27.071894][    C0]  do_idle (kernel/sched/idle.c:355)
[   27.071895][    C0]  cpu_startup_entry (kernel/sched/idle.c:454)
[   27.071897][    C0]  rest_init (init/main.c:727)
[   27.071899][    C0]  ? __cpuidle_text_end (??:?)
[   27.071901][    C0]  ? rest_init (init/main.c:727)
[   27.071903][    C0]  ? acpi_hw_set_mode (drivers/acpi/acpica/hwacpi.c:72 (discriminator 1))
[   27.071907][    C0]  ? cpus_read_unlock (./include/linux/percpu-rwsem.h:125 (discriminator 1) kernel/cpu.c:502 (discriminator 1))
[   27.071909][    C0]  ? acpi_enable (drivers/acpi/acpica/evxfevnt.c:47)
[   27.071911][    C0]  start_kernel (init/main.c:1185)
[   27.071913][    C0]  x86_64_start_reservations (arch/x86/kernel/head64.c:310)
[   27.071915][    C0]  x86_64_start_kernel (arch/x86/kernel/head64.c:291)
[   27.071916][    C0]  common_startup_64 (arch/x86/kernel/head_64.S:418)
| [   28.308051][  T266] softirqs last disabled at (0): 0x0
| [   28.308055][  T266] Preemption disabled at:
| [   28.308056][  T266] 0x0
| [   28.308064][  T266] Tainted: [W]=WARN
[   28.308065][  T266] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   28.308067][  T266] Call Trace:
[   28.308069][  T266]  <TASK>
[   28.308070][  T266]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   28.308075][  T266]  __might_resched.cold (kernel/sched/core.c:9234)
[   28.308079][  T266]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   28.308083][  T266]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   28.308087][  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))
[   28.308090][  T266]  ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[   28.308093][  T266]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   28.308097][  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)
[   28.308099][  T266]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   28.308100][  T266]  put_chars (drivers/char/virtio_console.c:1176)
[   28.308102][  T266]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   28.308104][  T266]  ? printk_get_next_message (kernel/printk/printk.c:3072)
[   28.308107][  T266]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   28.308110][  T266]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   28.308113][  T266]  ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[   28.308114][  T266]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   28.308116][  T266]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   28.308118][  T266]  console_emit_next_record (kernel/printk/printk.c:3183)
[   28.308120][  T266]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   28.308122][  T266]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   28.308124][  T266]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   28.308125][  T266]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   28.308127][  T266]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   28.308129][  T266]  ? console_flush_one_record (kernel/printk/printk.c:3247)
[   28.308130][  T266]  console_flush_one_record (kernel/printk/printk.c:3268)
[   28.308133][  T266]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   28.308135][  T266]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   28.308137][  T266]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   28.308138][  T266]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   28.308140][  T266]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   28.308141][  T266]  ? lock_release (./include/trace/events/lock.h:68 (discriminator 22) kernel/locking/lockdep.c:5920 (discriminator 22))
[   28.308143][  T266]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   28.308144][  T266]  ? __rcu_read_lock (kernel/rcu/tree_plugin.h:391 (discriminator 6) kernel/rcu/tree_plugin.h:414 (discriminator 6))
[   28.308146][  T266]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   28.308148][  T266]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   28.308150][  T266]  vprintk_emit (kernel/printk/printk.c:2479)
[   28.308152][  T266]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   28.308154][  T266]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   28.308155][  T266]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[   28.308158][  T266]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:78)
[   28.308159][  T266]  _printk (kernel/printk/printk.c:2504)
[   28.308163][  T266]  ? snapshot_read.cold (user.c:?)
[   28.308165][  T266]  ? ipv6_mc_down (net/ipv6/mcast.c:1157 net/ipv6/mcast.c:2820)
[   28.308170][  T266] br_set_state (net/bridge/br_stp.c:57 (discriminator 2)) bridge
[   28.308183][  T266] br_stp_disable_port (net/bridge/br_stp_if.c:106) bridge
[   28.308191][  T266] br_device_event (net/bridge/br.c:111) bridge
[   28.308199][  T266]  ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:211 (discriminator 1) kernel/locking/spinlock.c:221 (discriminator 1))
[   28.308202][  T266]  ? _sub_I_65535_1+0x4d0/0x4d0 stp
[   28.308204][  T266]  ? addrconf_notify (net/ipv6/addrconf.c:3812)
[   28.308208][  T266]  notifier_call_chain (kernel/notifier.c:85)
[   28.308211][  T266]  __dev_notify_flags (net/core/dev.c:2313 net/core/dev.c:2327 net/core/dev.c:9855)
[   28.308215][  T266]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[   28.308216][  T266]  ? netif_change_name (net/core/dev.c:1517)
[   28.308218][  T266]  ? netif_set_allmulti (./include/net/netdev_lock.h:30 (discriminator 1))
[   28.308220][  T266]  ? __kernel_text_address (kernel/extable.c:79)
[   28.308222][  T266]  ? write_profile (profile.c:?)
[   28.308224][  T266]  ? unwind_get_return_address (arch/x86/kernel/unwind_orc.c:385 arch/x86/kernel/unwind_orc.c:380)
[   28.308227][  T266]  netif_change_flags (net/core/dev.c:9882)
[   28.308230][  T266]  do_setlink.isra.0 (net/core/rtnetlink.c:3266 (discriminator 1))
[   28.308232][  T266]  ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1))
[   28.308234][  T266]  ? rtnl_link_get_size (net/core/rtnetlink.c:747)
[   28.308235][  T266]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   28.308237][  T266]  ? stack_depot_save_flags (lib/stackdepot.c:609 lib/stackdepot.c:676)
[   28.308240][  T266]  ? kasan_save_stack (mm/kasan/common.c:58)
[   28.308243][  T266]  ? kasan_save_stack (mm/kasan/common.c:57)
[   28.308244][  T266]  ? kasan_save_track (mm/kasan/common.c:78)
[   28.308246][  T266]  ? __kasan_kmalloc (mm/kasan/common.c:398 mm/kasan/common.c:415)
[   28.308247][  T266]  ? __kmalloc_cache_noprof (./include/linux/kasan.h:263 mm/slub.c:5563)
[   28.308249][  T266]  ? rtnl_newlink (./include/linux/slab.h:991 (discriminator 1) net/core/rtnetlink.c:4113 (discriminator 1))
[   28.308250][  T266]  ? rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   28.308251][  T266]  ? netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   28.308253][  T266]  ? netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   28.308255][  T266]  ? netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   28.308256][  T266]  ? ____sys_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4) net/socket.c:2713 (discriminator 4))
[   28.308258][  T266]  ? ___sys_sendmsg (net/socket.c:2767)
[   28.308260][  T266]  ? __sys_sendmsg (net/socket.c:2799)
[   28.308261][  T266]  ? do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   28.308263][  T266]  ? entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   28.308266][  T266]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   28.308267][  T266]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   28.308269][  T266]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   28.308270][  T266]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   28.308272][  T266]  ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22))
[   28.308275][  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)
[   28.308276][  T266]  ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1))
[   28.308278][  T266]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   28.308279][  T266]  ? ww_mutex_lock (kernel/locking/mutex.c:934)
[   28.308281][  T266]  ? __rtnl_newlink (net/core/rtnetlink.c:4063)
[   28.308283][  T266]  rtnl_newlink (net/core/rtnetlink.c:4215)
[   28.308285][  T266]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   28.308287][  T266]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   28.308288][  T266]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   28.308289][  T266]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   28.308291][  T266]  ? is_bpf_text_address (./include/linux/rcupdate.h:850 kernel/bpf/core.c:749)
[   28.308294][  T266]  ? is_bpf_text_address (./include/linux/rcupdate.h:882 kernel/bpf/core.c:751)
[   28.308296][  T266]  ? kernel_text_address (kernel/extable.c:125 kernel/extable.c:94)
[   28.308297][  T266]  ? __kernel_text_address (kernel/extable.c:79)
[   28.308298][  T266]  ? write_profile (profile.c:?)
[   28.308299][  T266]  ? unwind_get_return_address (arch/x86/kernel/unwind_orc.c:385 arch/x86/kernel/unwind_orc.c:380)
[   28.308300][  T266]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   28.308302][  T266]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   28.308303][  T266]  ? cap_capable (./include/trace/events/capability.h:26 (discriminator 22) security/commoncap.c:130 (discriminator 22))
[   28.308307][  T266]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   28.308308][  T266]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   28.308310][  T266]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   28.308311][  T266]  rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   28.308313][  T266]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   28.308314][  T266]  ? filter_irq_stacks (kernel/stacktrace.c:402)
[   28.308315][  T266]  ? stack_depot_save_flags (lib/stackdepot.c:609 lib/stackdepot.c:676)
[   28.308318][  T266]  netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   28.308319][  T266]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   28.308320][  T266]  ? lock_release (./include/trace/events/lock.h:68 (discriminator 22) kernel/locking/lockdep.c:5920 (discriminator 22))
[   28.308322][  T266]  ? netlink_ack (./include/linux/skbuff.h:2718)
[   28.308323][  T266]  ? __netlink_lookup (./include/linux/rcupdate.h:850 ./include/linux/rhashtable.h:709 net/netlink/af_netlink.c:499)
[   28.308325][  T266]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   28.308327][  T266]  ? lock_release (./include/trace/events/lock.h:68 (discriminator 22) kernel/locking/lockdep.c:5920 (discriminator 22))
[   28.308329][  T266]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   28.308331][  T266]  ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   28.308333][  T266]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   28.308334][  T266]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   28.308336][  T266]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   28.308338][  T266]  netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   28.308339][  T266]  ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7))
[   28.308341][  T266]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   28.308343][  T266]  ? lock_release (./include/trace/events/lock.h:68 (discriminator 22) kernel/locking/lockdep.c:5920 (discriminator 22))
[   28.308345][  T266]  ____sys_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4) net/socket.c:2713 (discriminator 4))
[   28.308346][  T266]  ? copy_msghdr_from_user (net/socket.c:2650)
[   28.308348][  T266]  ? get_timestamp.constprop.0 (./include/linux/netdevice.h:5399)
[   28.308349][  T266]  ? move_addr_to_kernel (net/socket.c:258)
[   28.308350][  T266]  ? filter_irq_stacks (kernel/stacktrace.c:402)
[   28.308353][  T266]  ___sys_sendmsg (net/socket.c:2767)
[   28.308355][  T266]  ? copy_msghdr_from_user (net/socket.c:2619)
[   28.308359][  T266]  __sys_sendmsg (net/socket.c:2799)
[   28.308361][  T266]  ? __sys_sendmsg_sock (net/socket.c:2780)
[   28.308364][  T266]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   28.308366][  T266]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   28.308367][  T266]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   28.308369][  T266]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   28.308370][  T266] RIP: 0033:0x7f4d11e0954e
[   28.308372][  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
[   28.308374][  T266] RSP: 002b:00007ffe40f71700 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
[   28.308377][  T266] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f4d11e0954e
[   28.308379][  T266] RDX: 0000000000000000 RSI: 00007ffe40f717b0 RDI: 0000000000000005
[   28.308379][  T266] RBP: 00007ffe40f71710 R08: 0000000000000000 R09: 0000000000000000
[   28.308380][  T266] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a918c2b
[   28.308381][  T266] R13: 00000000004a1620 R14: 0000000000000000 R15: 00007ffe40f71e70
| [   34.608130][  T291] softirqs last disabled at (0): 0x0
| [   34.608132][  T291] Preemption disabled at:
| [   34.608132][  T291] 0x0
| [   34.608141][  T291] Tainted: [W]=WARN
[   34.608142][  T291] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   34.608143][  T291] Call Trace:
[   34.608145][  T291]  <TASK>
[   34.608146][  T291]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   34.608152][  T291]  __might_resched.cold (kernel/sched/core.c:9234)
[   34.608156][  T291]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   34.608159][  T291]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   34.608163][  T291]  __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))
[   34.608167][  T291]  ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[   34.608170][  T291]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   34.608173][  T291]  ? 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)
[   34.608175][  T291]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   34.608177][  T291]  put_chars (drivers/char/virtio_console.c:1176)
[   34.608179][  T291]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   34.608180][  T291]  ? printk_get_next_message (kernel/printk/printk.c:3072)
[   34.608184][  T291]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   34.608187][  T291]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   34.608189][  T291]  ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[   34.608190][  T291]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   34.608192][  T291]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   34.608194][  T291]  console_emit_next_record (kernel/printk/printk.c:3183)
[   34.608197][  T291]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   34.608199][  T291]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   34.608200][  T291]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   34.608202][  T291]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   34.608204][  T291]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   34.608205][  T291]  ? console_flush_one_record (kernel/printk/printk.c:3247)
[   34.608207][  T291]  console_flush_one_record (kernel/printk/printk.c:3268)
[   34.608209][  T291]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   34.608212][  T291]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   34.608213][  T291]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   34.608215][  T291]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   34.608216][  T291]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   34.608218][  T291]  ? lock_release (./include/trace/events/lock.h:68 (discriminator 22) kernel/locking/lockdep.c:5920 (discriminator 22))
[   34.608219][  T291]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   34.608221][  T291]  ? __rcu_read_lock (kernel/rcu/tree_plugin.h:391 (discriminator 6) kernel/rcu/tree_plugin.h:414 (discriminator 6))
[   34.608223][  T291]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   34.608225][  T291]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   34.608227][  T291]  vprintk_emit (kernel/printk/printk.c:2479)
[   34.608229][  T291]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   34.608231][  T291]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   34.608233][  T291]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[   34.608235][  T291]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:78)
[   34.608236][  T291]  _printk (kernel/printk/printk.c:2504)
[   34.608240][  T291]  ? snapshot_read.cold (user.c:?)
[   34.608242][  T291]  ? ipv6_mc_down (net/ipv6/mcast.c:1157 net/ipv6/mcast.c:2820)
[   34.608246][  T291] br_set_state (net/bridge/br_stp.c:57 (discriminator 2)) bridge
[   34.608260][  T291] br_stp_disable_port (net/bridge/br_stp_if.c:106) bridge
[   34.608268][  T291] br_device_event (net/bridge/br.c:111) bridge
[   34.608276][  T291]  ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:211 (discriminator 1) kernel/locking/spinlock.c:221 (discriminator 1))
[   34.608279][  T291]  ? _sub_I_65535_1+0x4d0/0x4d0 stp
[   34.608282][  T291]  ? addrconf_notify (net/ipv6/addrconf.c:3812)
[   34.608285][  T291]  notifier_call_chain (kernel/notifier.c:85)
[   34.608288][  T291]  __dev_notify_flags (net/core/dev.c:2313 net/core/dev.c:2327 net/core/dev.c:9855)
[   34.608292][  T291]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[   34.608293][  T291]  ? netif_change_name (net/core/dev.c:1517)
[   34.608295][  T291]  ? netif_set_allmulti (./include/net/netdev_lock.h:30 (discriminator 1))
[   34.608297][  T291]  ? __kernel_text_address (kernel/extable.c:79)
[   34.608299][  T291]  ? write_profile (profile.c:?)
[   34.608302][  T291]  ? unwind_get_return_address (arch/x86/kernel/unwind_orc.c:385 arch/x86/kernel/unwind_orc.c:380)
[   34.608305][  T291]  netif_change_flags (net/core/dev.c:9882)
[   34.608307][  T291]  do_setlink.isra.0 (net/core/rtnetlink.c:3266 (discriminator 1))
[   34.608310][  T291]  ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1))
[   34.608311][  T291]  ? rtnl_link_get_size (net/core/rtnetlink.c:747)
[   34.608312][  T291]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   34.608314][  T291]  ? stack_depot_save_flags (lib/stackdepot.c:609 lib/stackdepot.c:676)
[   34.608318][  T291]  ? kasan_save_stack (mm/kasan/common.c:58)
[   34.608321][  T291]  ? kasan_save_stack (mm/kasan/common.c:57)
[   34.608322][  T291]  ? kasan_save_track (mm/kasan/common.c:78)
[   34.608323][  T291]  ? __kasan_kmalloc (mm/kasan/common.c:398 mm/kasan/common.c:415)
[   34.608325][  T291]  ? __kmalloc_cache_noprof (./include/linux/kasan.h:263 mm/slub.c:5563)
[   34.608326][  T291]  ? rtnl_newlink (./include/linux/slab.h:991 (discriminator 1) net/core/rtnetlink.c:4113 (discriminator 1))
[   34.608327][  T291]  ? rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   34.608329][  T291]  ? netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   34.608331][  T291]  ? netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   34.608332][  T291]  ? netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   34.608334][  T291]  ? ____sys_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4) net/socket.c:2713 (discriminator 4))
[   34.608336][  T291]  ? ___sys_sendmsg (net/socket.c:2767)
[   34.608337][  T291]  ? __sys_sendmsg (net/socket.c:2799)
[   34.608339][  T291]  ? do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   34.608341][  T291]  ? entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   34.608343][  T291]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   34.608345][  T291]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   34.608347][  T291]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   34.608348][  T291]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   34.608350][  T291]  ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22))
[   34.608353][  T291]  ? __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)
[   34.608355][  T291]  ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1))
[   34.608356][  T291]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   34.608357][  T291]  ? ww_mutex_lock (kernel/locking/mutex.c:934)
[   34.608360][  T291]  ? __rtnl_newlink (net/core/rtnetlink.c:4063)
[   34.608362][  T291]  rtnl_newlink (net/core/rtnetlink.c:4215)
[   34.608363][  T291]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   34.608365][  T291]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   34.608366][  T291]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   34.608368][  T291]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   34.608370][  T291]  ? is_bpf_text_address (./include/linux/rcupdate.h:850 kernel/bpf/core.c:749)
[   34.608373][  T291]  ? is_bpf_text_address (./include/linux/rcupdate.h:882 kernel/bpf/core.c:751)
[   34.608374][  T291]  ? kernel_text_address (kernel/extable.c:125 kernel/extable.c:94)
[   34.608376][  T291]  ? __kernel_text_address (kernel/extable.c:79)
[   34.608377][  T291]  ? write_profile (profile.c:?)
[   34.608378][  T291]  ? unwind_get_return_address (arch/x86/kernel/unwind_orc.c:385 arch/x86/kernel/unwind_orc.c:380)
[   34.608379][  T291]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   34.608381][  T291]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   34.608383][  T291]  ? cap_capable (./include/trace/events/capability.h:26 (discriminator 22) security/commoncap.c:130 (discriminator 22))
[   34.608386][  T291]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   34.608388][  T291]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   34.608390][  T291]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   34.608391][  T291]  rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   34.608392][  T291]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   34.608394][  T291]  ? filter_irq_stacks (kernel/stacktrace.c:402)
[   34.608395][  T291]  ? stack_depot_save_flags (lib/stackdepot.c:609 lib/stackdepot.c:676)
[   34.608397][  T291]  netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   34.608399][  T291]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   34.608400][  T291]  ? lock_release (./include/trace/events/lock.h:68 (discriminator 22) kernel/locking/lockdep.c:5920 (discriminator 22))
[   34.608402][  T291]  ? netlink_ack (./include/linux/skbuff.h:2718)
[   34.608403][  T291]  ? __netlink_lookup (./include/linux/rcupdate.h:850 ./include/linux/rhashtable.h:709 net/netlink/af_netlink.c:499)
[   34.608405][  T291]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   34.608407][  T291]  ? lock_release (./include/trace/events/lock.h:68 (discriminator 22) kernel/locking/lockdep.c:5920 (discriminator 22))
[   34.608409][  T291]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   34.608411][  T291]  ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   34.608413][  T291]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   34.608414][  T291]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   34.608416][  T291]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   34.608418][  T291]  netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   34.608420][  T291]  ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7))
[   34.608421][  T291]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   34.608423][  T291]  ? lock_release (./include/trace/events/lock.h:68 (discriminator 22) kernel/locking/lockdep.c:5920 (discriminator 22))
[   34.608425][  T291]  ____sys_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4) net/socket.c:2713 (discriminator 4))
[   34.608427][  T291]  ? copy_msghdr_from_user (net/socket.c:2650)
[   34.608428][  T291]  ? get_timestamp.constprop.0 (./include/linux/netdevice.h:5399)
[   34.608430][  T291]  ? move_addr_to_kernel (net/socket.c:258)
[   34.608431][  T291]  ? filter_irq_stacks (kernel/stacktrace.c:402)
[   34.608433][  T291]  ___sys_sendmsg (net/socket.c:2767)
[   34.608435][  T291]  ? copy_msghdr_from_user (net/socket.c:2619)
[   34.608440][  T291]  __sys_sendmsg (net/socket.c:2799)
[   34.608442][  T291]  ? __sys_sendmsg_sock (net/socket.c:2780)
[   34.608444][  T291]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   34.608446][  T291]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   34.608448][  T291]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   34.608450][  T291]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   34.608451][  T291] RIP: 0033:0x7f3e30df754e
[   34.608453][  T291] 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
[   34.608455][  T291] RSP: 002b:00007ffc92410510 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
[   34.608459][  T291] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f3e30df754e
[   34.608460][  T291] RDX: 0000000000000000 RSI: 00007ffc924105c0 RDI: 0000000000000005
[   34.608461][  T291] RBP: 00007ffc92410520 R08: 0000000000000000 R09: 0000000000000000
[   34.608461][  T291] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a918c32


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