======================================
| [   11.961923][  T188] softirqs last disabled at (79809): __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767)
| [   11.961926][  T188] Preemption disabled at:
| [   11.961926][  T188] vprintk_emit (kernel/printk/printk.c:2471)
| [   11.961935][  T188] Tainted: [W]=WARN
[   11.961936][  T188] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   11.961938][  T188] Call Trace:
[   11.961940][  T188]  <TASK>
[   11.961941][  T188]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   11.961946][  T188]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   11.961948][  T188]  __might_resched.cold (kernel/sched/core.c:9234)
[   11.961952][  T188]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   11.961956][  T188]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   11.961960][  T188]  __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))
[   11.961963][  T188]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   11.961969][  T188]  ? 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)
[   11.961972][  T188]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   11.961976][  T188]  put_chars (drivers/char/virtio_console.c:1176)
[   11.961978][  T188]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   11.961981][  T188]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   11.961987][  T188]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   11.961993][  T188]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   11.961996][  T188]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   11.961999][  T188]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   11.962003][  T188]  console_emit_next_record (kernel/printk/printk.c:3183)
[   11.962006][  T188]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   11.962007][  T188]  ? 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))
[   11.962010][  T188]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   11.962012][  T188]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   11.962021][  T188]  console_flush_one_record (kernel/printk/printk.c:3268)
[   11.962024][  T188]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   11.962026][  T188]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   11.962031][  T188]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   11.962033][  T188]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   11.962034][  T188]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   11.962036][  T188]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   11.962040][  T188]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   11.962042][  T188]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   11.962044][  T188]  vprintk_emit (kernel/printk/printk.c:2479)
[   11.962048][  T188]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   11.962049][  T188]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   11.962052][  T188]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   11.962055][  T188]  ? llc_exit (./arch/x86/include/asm/atomic.h:28 ./include/linux/atomic/atomic-arch-fallback.h:503 ./include/linux/atomic/atomic-instrumented.h:68 ./include/linux/refcount.h:134 net/llc/llc_core.c:38 net/llc/llc_core.c:96) llc
[   11.962059][  T188]  _printk (kernel/printk/printk.c:2504)
[   11.962063][  T188]  ? snapshot_read.cold (user.c:?)
[   11.962064][  T188]  ? __mutex_unlock_slowpath (./include/linux/preempt.h:500 (discriminator 1) kernel/locking/mutex.c:999 (discriminator 1))
[   11.962069][  T188]  ? _mutex_trylock_nest_lock (kernel/locking/mutex.c:1227 (discriminator 6))
[   11.962073][  T188]  ? __mutex_unlock_slowpath (./include/linux/instrumented.h:55 ./include/linux/atomic/atomic-instrumented.h:4480 kernel/locking/mutex.c:1021)
[   11.962076][  T188] br_init (bridge.mod.c:?) bridge
[   11.962090][  T188]  do_one_initcall (init/main.c:1357)
[   11.962094][  T188]  ? trace_event_raw_event_initcall_level (./include/trace/events/initcall.h:10)
[   11.962098][  T188]  ? do_init_module (./include/linux/slab.h:991 (discriminator 1) kernel/module/main.c:3105 (discriminator 1))
[   11.962101][  T188]  ? kasan_unpoison (mm/kasan/shadow.c:146 mm/kasan/shadow.c:178)
[   11.962105][  T188]  do_init_module (kernel/module/main.c:3117)
[   11.962109][  T188]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4488)
[   11.962112][  T188]  ? free_module (./include/trace/events/module.h:50 (discriminator 19))
[   11.962115][  T188]  ? kfree (./include/linux/kasan.h:235 mm/slub.c:2748 mm/slub.c:6499 mm/slub.c:6792)
[   11.962119][  T188]  load_module (kernel/module/main.c:3593)
[   11.962131][  T188]  ? layout_and_allocate.isra.0 (kernel/module/main.c:3016)
[   11.962136][  T188]  ? backing_file_read_iter (fs/backing-file.c:211)
[   11.962140][  T188]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   11.962143][  T188]  init_module_from_file (kernel/module/main.c:3790)
[   11.962146][  T188]  ? __ia32_sys_init_module (kernel/module/main.c:3647)
[   11.962153][  T188]  ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[   11.962157][  T188]  ? 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)
[   11.962160][  T188]  idempotent_init_module (kernel/module/main.c:3802)
[   11.962163][  T188]  ? init_module_from_file (kernel/module/main.c:3791)
[   11.962169][  T188]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   11.962171][  T188]  ? cap_capable (./include/trace/events/capability.h:26 (discriminator 22) security/commoncap.c:130 (discriminator 22))
[   11.962176][  T188]  __x64_sys_finit_module (kernel/module/main.c:3828 kernel/module/main.c:3812 kernel/module/main.c:3812)
[   11.962177][  T188]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[   11.962181][  T188]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   11.962183][  T188]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   11.962186][  T188]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   11.962189][  T188] RIP: 0033:0x7f4812bb737d
[   11.962192][  T188] Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 4b aa 0f 00 f7 d8 64 89 01 48
All code
========
   0:	ff c3                	inc    %ebx
   2:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
   9:	00 00 00 
   c:	90                   	nop
   d:	f3 0f 1e fa          	endbr64
  11:	48 89 f8             	mov    %rdi,%rax
  14:	48 89 f7             	mov    %rsi,%rdi
  17:	48 89 d6             	mov    %rdx,%rsi
  1a:	48 89 ca             	mov    %rcx,%rdx
  1d:	4d 89 c2             	mov    %r8,%r10
  20:	4d 89 c8             	mov    %r9,%r8
  23:	4c 8b 4c 24 08       	mov    0x8(%rsp),%r9
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 4b aa 0f 00 	mov    0xfaa4b(%rip),%rcx        # 0xfaa85
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 4b aa 0f 00 	mov    0xfaa4b(%rip),%rcx        # 0xfaa5b
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[   11.962194][  T188] RSP: 002b:00007ffe8a7ec148 EFLAGS: 00000246 ORIG_RAX: 0000000000000139
[   11.962196][  T188] RAX: ffffffffffffffda RBX: 000055b72f0c9b90 RCX: 00007f4812bb737d
[   11.962198][  T188] RDX: 0000000000000000 RSI: 000055b718cffffd RDI: 0000000000000007
[   11.962198][  T188] RBP: 00007ffe8a7ec1e0 R08: 0000000000000000 R09: 0000000000000000
[   11.962199][  T188] R10: 0000000000000000 R11: 0000000000000246 R12: 000055b718cffffd
[   11.962200][  T188] R13: 000055b72f0c9b50 R14: 0000000000040000 R15: 0000000000000000
| [   13.300361][  T227] softirqs last disabled at (27862): br_stp_enable_bridge (./include/linux/spinlock.h:353 net/bridge/br_stp_if.c:53) bridge
| [   13.300368][  T227] Preemption disabled at:
| [   13.300369][  T227] 0x0
| [   13.300379][  T227] Tainted: [W]=WARN
[   13.300380][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   13.300381][  T227] Call Trace:
[   13.300383][  T227]  <TASK>
[   13.300385][  T227]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   13.300390][  T227]  __might_resched.cold (kernel/sched/core.c:9234)
[   13.300395][  T227]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   13.300398][  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)
[   13.300403][  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))
[   13.300405][  T227]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   13.300411][  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)
[   13.300415][  T227]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   13.300418][  T227]  put_chars (drivers/char/virtio_console.c:1176)
[   13.300421][  T227]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   13.300424][  T227]  ? validate_chain (kernel/locking/lockdep.c:159 kernel/locking/lockdep.c:191 kernel/locking/lockdep.c:3928)
[   13.300429][  T227]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   13.300432][  T227]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   13.300434][  T227]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   13.300439][  T227]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   13.300440][  T227]  ? console_emit_next_record (kernel/printk/printk.c:3095 (discriminator 2) kernel/printk/printk.c:3182 (discriminator 2))
[   13.300443][  T227]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   13.300446][  T227]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   13.300450][  T227]  console_emit_next_record (kernel/printk/printk.c:3183)
[   13.300453][  T227]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   13.300455][  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))
[   13.300459][  T227]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   13.300462][  T227]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   13.300469][  T227]  console_flush_one_record (kernel/printk/printk.c:3268)
[   13.300475][  T227]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   13.300476][  T227]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   13.300481][  T227]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   13.300484][  T227]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   13.300485][  T227]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   13.300487][  T227]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   13.300491][  T227]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   13.300493][  T227]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   13.300496][  T227]  vprintk_emit (kernel/printk/printk.c:2479)
[   13.300499][  T227]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   13.300504][  T227]  _printk (kernel/printk/printk.c:2504)
[   13.300507][  T227]  ? snapshot_read.cold (user.c:?)
[   13.300510][  T227]  ? trace_hardirqs_off (kernel/trace/trace_preemptirq.c:104 (discriminator 1))
[   13.300513][  T227]  ? try_to_grab_pending (./include/linux/instrumented.h:112 ./include/asm-generic/bitops/instrumented-atomic.h:71 kernel/workqueue.c:2158)
[   13.300516][  T227]  ? mark_held_locks (kernel/locking/lockdep.c:4341)
[   13.300519][  T227]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4488)
[   13.300525][  T227] br_set_state (net/bridge/br_stp.c:57 (discriminator 2)) bridge
[   13.300534][  T227] br_init_port (net/bridge/br_stp_if.c:39) bridge
[   13.300542][  T227] br_stp_enable_bridge (net/bridge/br_stp_if.c:93 net/bridge/br_stp_if.c:62) bridge
[   13.300550][  T227] br_dev_open (net/bridge/br_device.c:170) bridge
[   13.300560][  T227]  __dev_open (net/core/dev.c:1724)
[   13.300562][  T227]  ? netif_state_change (./include/net/netdev_lock.h:33)
[   13.300564][  T227]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   13.300567][  T227]  ? mark_held_locks (kernel/locking/lockdep.c:4341)
[   13.300571][  T227]  __dev_change_flags (net/core/dev.c:9812)
[   13.300574][  T227]  ? netif_set_allmulti (./include/net/netdev_lock.h:33)
[   13.300577][  T227]  ? kernel_text_address (kernel/extable.c:125 kernel/extable.c:94)
[   13.300579][  T227]  ? __kernel_text_address (kernel/extable.c:79)
[   13.300581][  T227]  ? write_profile (profile.c:?)
[   13.300586][  T227]  netif_change_flags (net/core/dev.c:9877)
[   13.300590][  T227]  do_setlink.isra.0 (net/core/rtnetlink.c:3266 (discriminator 1))
[   13.300593][  T227]  ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1))
[   13.300595][  T227]  ? rtnl_link_get_size (net/core/rtnetlink.c:747)
[   13.300596][  T227]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380)
[   13.300599][  T227]  ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2))
[   13.300603][  T227]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   13.300605][  T227]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   13.300607][  T227]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   13.300610][  T227]  ? kasan_save_stack (mm/kasan/common.c:58)
[   13.300613][  T227]  ? kasan_save_stack (mm/kasan/common.c:57)
[   13.300615][  T227]  ? kasan_save_track (mm/kasan/common.c:78)
[   13.300618][  T227]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   13.300620][  T227]  ? netlink_update_listeners (net/netlink/af_netlink.c:532)
[   13.300623][  T227]  ? ___sys_sendmsg (net/socket.c:2744 net/socket.c:2763)
[   13.300627][  T227]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   13.300630][  T227]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   13.300632][  T227]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   13.300634][  T227]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   13.300636][  T227]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   13.300637][  T227]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   13.300639][  T227]  ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22))
[   13.300641][  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)
[   13.300643][  T227]  ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1))
[   13.300646][  T227]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   13.300649][  T227]  ? ww_mutex_lock (kernel/locking/mutex.c:934)
[   13.300655][  T227]  ? __rtnl_newlink (net/core/rtnetlink.c:4063)
[   13.300660][  T227]  rtnl_newlink (net/core/rtnetlink.c:4215)
[   13.300665][  T227]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   13.300667][  T227]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   13.300671][  T227]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   13.300673][  T227]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   13.300675][  T227]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   13.300677][  T227]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   13.300681][  T227]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   13.300683][  T227]  rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   13.300686][  T227]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   13.300687][  T227]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   13.300692][  T227]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   13.300694][  T227]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   13.300697][  T227]  netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   13.300699][  T227]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   13.300702][  T227]  ? netlink_ack (./include/linux/skbuff.h:2718)
[   13.300708][  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))
[   13.300709][  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))
[   13.300714][  T227]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   13.300717][  T227]  ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   13.300720][  T227]  ? __lock_acquire (kernel/locking/lockdep.c:5251 (discriminator 3))
[   13.300724][  T227]  netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   13.300728][  T227]  ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7))
[   13.300729][  T227]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   13.300732][  T227]  ? __might_fault (mm/memory.c:7482 (discriminator 5))
[   13.300736][  T227]  ? __might_fault (mm/memory.c:7482 (discriminator 5))
[   13.300740][  T227]  ____sys_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4) net/socket.c:2713 (discriminator 4))
[   13.300742][  T227]  ? copy_msghdr_from_user (net/socket.c:2650)
[   13.300744][  T227]  ? get_timestamp.constprop.0 (./include/linux/netdevice.h:5399)
[   13.300746][  T227]  ? move_addr_to_kernel (./include/linux/audit.h:354 (discriminator 1))
[   13.300753][  T227]  ___sys_sendmsg (net/socket.c:2767)
[   13.300756][  T227]  ? copy_msghdr_from_user (net/socket.c:2619)
[   13.300772][  T227]  __sys_sendmsg (net/socket.c:2799)
[   13.300775][  T227]  ? __sys_sendmsg_sock (net/socket.c:2780)
[   13.300781][  T227]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   13.300784][  T227]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   13.300786][  T227]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   13.300789][  T227]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   13.300791][  T227] RIP: 0033:0x7f2b1cbc654e
[   13.300794][  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
[   13.300796][  T227] RSP: 002b:00007ffcf5401200 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
[   13.300798][  T227] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f2b1cbc654e
[   13.300800][  T227] RDX: 0000000000000000 RSI: 00007ffcf54012b0 RDI: 0000000000000005
[   13.300800][  T227] RBP: 00007ffcf5401210 R08: 0000000000000000 R09: 0000000000000000
[   13.300801][  T227] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a90dfa5
[   13.300802][  T227] R13: 00000000004a1620 R14: 0000000000000000 R15: 00007ffcf5401980
| [   15.371545][   T72] softirqs last disabled at (13288): br_device_event (./include/linux/spinlock.h:353 net/bridge/br.c:109) bridge
| [   15.371554][   T72] Preemption disabled at:
| [   15.371555][   T72] 0x0
| [   15.371566][   T72] Tainted: [W]=WARN
[   15.371567][   T72] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   15.371568][   T72] Workqueue: netns cleanup_net
[   15.371572][   T72] Call Trace:
[   15.371574][   T72]  <TASK>
[   15.371576][   T72]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   15.371582][   T72]  __might_resched.cold (kernel/sched/core.c:9234)
[   15.371587][   T72]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   15.371591][   T72]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   15.371597][   T72]  __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))
[   15.371599][   T72]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   15.371606][   T72]  ? 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)
[   15.371609][   T72]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   15.371613][   T72]  put_chars (drivers/char/virtio_console.c:1176)
[   15.371617][   T72]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   15.371625][   T72]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   15.371633][   T72]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   15.371637][   T72]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   15.371642][   T72]  console_emit_next_record (kernel/printk/printk.c:3183)
[   15.371647][   T72]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   15.371648][   T72]  ? 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))
[   15.371651][   T72]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   15.371655][   T72]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   15.371660][   T72]  console_flush_one_record (kernel/printk/printk.c:3268)
[   15.371665][   T72]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   15.371666][   T72]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   15.371673][   T72]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   15.371676][   T72]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   15.371678][   T72]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   15.371680][   T72]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   15.371684][   T72]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   15.371687][   T72]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   15.371690][   T72]  vprintk_emit (kernel/printk/printk.c:2479)
[   15.371695][   T72]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   15.371696][   T72]  ? mark_held_locks (kernel/locking/lockdep.c:4341)
[   15.371703][   T72]  _printk (kernel/printk/printk.c:2504)
[   15.371707][   T72]  ? snapshot_read.cold (user.c:?)
[   15.371716][   T72] br_set_state (net/bridge/br_stp.c:57 (discriminator 2)) bridge
[   15.371731][   T72] br_stp_disable_port (net/bridge/br_stp_if.c:106) bridge
[   15.371743][   T72] br_device_event (net/bridge/br.c:111) bridge
[   15.371752][   T72]  ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:211 (discriminator 1) kernel/locking/spinlock.c:221 (discriminator 1))
[   15.371757][   T72]  ? _sub_I_65535_1+0x4d0/0x4d0 stp
[   15.371765][   T72]  notifier_call_chain (kernel/notifier.c:85)
[   15.371772][   T72]  netif_close_many (net/core/dev.c:2313 net/core/dev.c:2327 net/core/dev.c:1829)
[   15.371776][   T72]  ? trace_kfree (./include/trace/events/kmem.h:97 (discriminator 22))
[   15.371779][   T72]  ? __dev_close_many (net/core/dev.c:1804)
[   15.371783][   T72]  ? netif_close_many_and_unlock (net/core/dev.c:12411)
[   15.371788][   T72]  unregister_netdevice_many_notify (net/core/dev.c:12487)
[   15.371791][   T72]  ? ops_undo_list (net/core/net_namespace.c:206 net/core/net_namespace.c:253)
[   15.371794][   T72]  ? worker_thread (kernel/workqueue.c:3470 kernel/workqueue.c:3551)
[   15.371795][   T72]  ? kthread (kernel/kthread.c:436)
[   15.371798][   T72]  ? ret_from_fork (arch/x86/kernel/process.c:158)
[   15.371801][   T72]  ? ret_from_fork_asm (arch/x86/entry/entry_64.S:245)
[   15.371804][   T72]  ? unregister_netdevice_queued (./include/linux/list.h:419 (discriminator 3))
[   15.371809][   T72]  ? mark_held_locks (kernel/locking/lockdep.c:4341)
[   15.371816][   T72]  default_device_exit_batch (net/core/dev.c:12589 net/core/dev.c:13288)
[   15.371820][   T72]  ? generic_xdp_install (./include/linux/netdevice.h:5716 (discriminator 3))
[   15.371823][   T72]  ? unregister_netdevice_queue (./include/linux/list.h:173)
[   15.371826][   T72]  ? rtnl_is_locked (net/core/rtnetlink.c:169)
[   15.371828][   T72]  ? nexthop_net_exit_rtnl (./include/linux/rtnetlink.h:154 (discriminator 1) net/ipv4/nexthop.c:4172 (discriminator 1))
[   15.371832][   T72]  ? mutex_is_locked (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:3188 kernel/locking/mutex.h:48 kernel/locking/mutex.c:65)
[   15.371836][   T72]  ops_undo_list (net/core/net_namespace.c:206 net/core/net_namespace.c:253)
[   15.371840][   T72]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4488)
[   15.371844][   T72]  ? rtnl_net_dumpid_one (net/core/net_namespace.c:1098)
[   15.371846][   T72]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   15.371850][   T72]  ? idr_destroy (lib/radix-tree.c:310 lib/radix-tree.c:674 lib/radix-tree.c:1563)
[   15.371855][   T72]  cleanup_net (net/core/net_namespace.c:706)
[   15.371858][   T72]  ? net_passive_dec (./include/linux/llist.h:241)
[   15.371863][   T72]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   15.371865][   T72]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   15.371869][   T72]  process_one_work (kernel/workqueue.c:3387)
[   15.371877][   T72]  ? __queue_delayed_work (kernel/workqueue.c:2622)
[   15.371879][   T72]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   15.371889][   T72]  worker_thread (kernel/workqueue.c:3470 kernel/workqueue.c:3551)
[   15.371893][   T72]  ? rescuer_thread (./include/linux/list.h:419 (discriminator 3))
[   15.371895][   T72]  ? __kthread_parkme (./include/linux/instrumented.h:82 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 kernel/kthread.c:272)
[   15.371898][   T72]  ? rescuer_thread (./include/linux/list.h:419 (discriminator 3))
[   15.371901][   T72]  ? rescuer_thread (./include/linux/list.h:419 (discriminator 3))
[   15.371903][   T72]  kthread (kernel/kthread.c:436)
[   15.371905][   T72]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[   15.371908][   T72]  ? kthread_affine_preferred (kernel/kthread.c:857)
[   15.371912][   T72]  ret_from_fork (arch/x86/kernel/process.c:158)
[   15.371915][   T72]  ? arch_exit_to_user_mode_prepare.isra.0 (arch/x86/entry/vdso/vma.c:80 (discriminator 1))
[   15.371919][   T72]  ? __switch_to (arch/x86/kernel/process_64.c:403 arch/x86/kernel/process_64.c:663)
[   15.371923][   T72]  ? kthread_affine_preferred (kernel/kthread.c:857)


Finger prints:
__irq_exit_rcu:vprintk_emit:dump_stack_lvl:__kmalloc_noprof:put_chars
br_stp_enable_bridge:dump_stack_lvl:__kmalloc_noprof:put_chars:hvc_console_print
br_device_event:dump_stack_lvl:__kmalloc_noprof:put_chars:hvc_console_print