======================================
| [    9.770195][  T188] softirqs last disabled at (84290): llc_sap_open (./include/linux/spinlock.h:353 net/llc/llc_core.c:93) llc
| [    9.770198][  T188] Preemption disabled at:
| [    9.770199][  T188] vprintk_emit (kernel/printk/printk.c:2471)
| [    9.770207][  T188] Tainted: [W]=WARN
[    9.770208][  T188] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[    9.770210][  T188] Call Trace:
[    9.770211][  T188]  <TASK>
[    9.770212][  T188]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[    9.770217][  T188]  ? vprintk_emit (kernel/printk/printk.c:2471)
[    9.770219][  T188]  __might_resched.cold (kernel/sched/core.c:9234)
[    9.770223][  T188]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[    9.770226][  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)
[    9.770231][  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))
[    9.770233][  T188]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[    9.770239][  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)
[    9.770242][  T188]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[    9.770245][  T188]  put_chars (drivers/char/virtio_console.c:1176)
[    9.770248][  T188]  ? __send_to_port (drivers/char/virtio_console.c:654)
[    9.770251][  T188]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[    9.770256][  T188]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[    9.770263][  T188]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[    9.770265][  T188]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[    9.770268][  T188]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[    9.770273][  T188]  console_emit_next_record (kernel/printk/printk.c:3183)
[    9.770276][  T188]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[    9.770277][  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))
[    9.770280][  T188]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[    9.770281][  T188]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[    9.770285][  T188]  console_flush_one_record (kernel/printk/printk.c:3268)
[    9.770289][  T188]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[    9.770290][  T188]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[    9.770295][  T188]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[    9.770297][  T188]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[    9.770299][  T188]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[    9.770301][  T188]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[    9.770304][  T188]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[    9.770306][  T188]  ? vprintk_emit (kernel/printk/printk.c:2478)
[    9.770309][  T188]  vprintk_emit (kernel/printk/printk.c:2479)
[    9.770312][  T188]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[    9.770313][  T188]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[    9.770316][  T188]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[    9.770319][  T188]  ? br_deinit (net/bridge/br.c:384) bridge
[    9.770329][  T188]  _printk (kernel/printk/printk.c:2504)
[    9.770333][  T188]  ? snapshot_read.cold (user.c:?)
[    9.770334][  T188]  ? __mutex_unlock_slowpath (./include/linux/preempt.h:500 (discriminator 1) kernel/locking/mutex.c:999 (discriminator 1))
[    9.770339][  T188]  ? _mutex_trylock_nest_lock (kernel/locking/mutex.c:1227 (discriminator 6))
[    9.770343][  T188]  ? __mutex_unlock_slowpath (./include/linux/instrumented.h:55 ./include/linux/atomic/atomic-instrumented.h:4480 kernel/locking/mutex.c:1021)
[    9.770346][  T188] br_init (bridge.mod.c:?) bridge
[    9.770353][  T188]  do_one_initcall (init/main.c:1357)
[    9.770357][  T188]  ? trace_event_raw_event_initcall_level (./include/trace/events/initcall.h:10)
[    9.770361][  T188]  ? do_init_module (./include/linux/slab.h:991 (discriminator 1) kernel/module/main.c:3105 (discriminator 1))
[    9.770363][  T188]  ? kasan_unpoison (mm/kasan/shadow.c:146 mm/kasan/shadow.c:178)
[    9.770368][  T188]  do_init_module (kernel/module/main.c:3117)
[    9.770371][  T188]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4488)
[    9.770375][  T188]  ? free_module (./include/trace/events/module.h:50 (discriminator 19))
[    9.770377][  T188]  ? kfree (./include/linux/kasan.h:235 mm/slub.c:2748 mm/slub.c:6499 mm/slub.c:6792)
[    9.770381][  T188]  load_module (kernel/module/main.c:3593)
[    9.770388][  T188]  ? layout_and_allocate.isra.0 (kernel/module/main.c:3016)
[    9.770392][  T188]  ? backing_file_read_iter (fs/backing-file.c:211)
[    9.770396][  T188]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[    9.770399][  T188]  init_module_from_file (kernel/module/main.c:3790)
[    9.770402][  T188]  ? __ia32_sys_init_module (kernel/module/main.c:3647)
[    9.770409][  T188]  ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[    9.770413][  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)
[    9.770416][  T188]  idempotent_init_module (kernel/module/main.c:3802)
[    9.770419][  T188]  ? init_module_from_file (kernel/module/main.c:3791)
[    9.770424][  T188]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[    9.770426][  T188]  ? cap_capable (./include/trace/events/capability.h:26 (discriminator 22) security/commoncap.c:130 (discriminator 22))
[    9.770431][  T188]  __x64_sys_finit_module (kernel/module/main.c:3828 kernel/module/main.c:3812 kernel/module/main.c:3812)
[    9.770433][  T188]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[    9.770436][  T188]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[    9.770438][  T188]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[    9.770441][  T188]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[    9.770443][  T188] RIP: 0033:0x7f8abe60c37d
[    9.770446][  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
[    9.770448][  T188] RSP: 002b:00007ffcb0daa488 EFLAGS: 00000246 ORIG_RAX: 0000000000000139
[    9.770450][  T188] RAX: ffffffffffffffda RBX: 0000558230df9b90 RCX: 00007f8abe60c37d
[    9.770451][  T188] RDX: 0000000000000000 RSI: 0000558218c4affd RDI: 0000000000000007
[    9.770452][  T188] RBP: 00007ffcb0daa520 R08: 0000000000000000 R09: 0000000000000000
[    9.770453][  T188] R10: 0000000000000000 R11: 0000000000000246 R12: 0000558218c4affd
[    9.770454][  T188] R13: 0000558230df9b50 R14: 0000000000040000 R15: 0000000000000000
| [   10.954576][  T227] softirqs last disabled at (16794): br_stp_enable_bridge (./include/linux/spinlock.h:353 net/bridge/br_stp_if.c:53) bridge
| [   10.954583][  T227] Preemption disabled at:
| [   10.954584][  T227] 0x0
| [   10.954594][  T227] Tainted: [W]=WARN
[   10.954595][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   10.954596][  T227] Call Trace:
[   10.954598][  T227]  <TASK>
[   10.954599][  T227]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   10.954605][  T227]  __might_resched.cold (kernel/sched/core.c:9234)
[   10.954610][  T227]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   10.954613][  T227]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   10.954618][  T227]  __kmalloc_noprof (./include/linux/sched/mm.h:322 (discriminator 2) mm/slub.c:4636 (discriminator 2) mm/slub.c:4974 (discriminator 2) mm/slub.c:5413 (discriminator 2) mm/slub.c:5439 (discriminator 2))
[   10.954620][  T227]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   10.954626][  T227]  ? do_raw_spin_unlock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:32 ./include/asm-generic/qspinlock.h:58 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141)
[   10.954629][  T227]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   10.954632][  T227]  put_chars (drivers/char/virtio_console.c:1176)
[   10.954635][  T227]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   10.954639][  T227]  ? validate_chain (kernel/locking/lockdep.c:159 kernel/locking/lockdep.c:191 kernel/locking/lockdep.c:3928)
[   10.954643][  T227]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   10.954647][  T227]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   10.954648][  T227]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   10.954653][  T227]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   10.954654][  T227]  ? console_emit_next_record (kernel/printk/printk.c:3095 (discriminator 2) kernel/printk/printk.c:3182 (discriminator 2))
[   10.954657][  T227]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   10.954660][  T227]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   10.954664][  T227]  console_emit_next_record (kernel/printk/printk.c:3183)
[   10.954667][  T227]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   10.954668][  T227]  ? console_flush_one_record (./include/linux/rcupdate.h:314 (discriminator 2) ./include/linux/srcu.h:439 (discriminator 2) kernel/printk/printk.c:291 (discriminator 2) kernel/printk/printk.c:3246 (discriminator 2))
[   10.954671][  T227]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   10.954673][  T227]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   10.954677][  T227]  console_flush_one_record (kernel/printk/printk.c:3268)
[   10.954680][  T227]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   10.954682][  T227]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   10.954687][  T227]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   10.954689][  T227]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   10.954690][  T227]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   10.954692][  T227]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   10.954696][  T227]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   10.954697][  T227]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   10.954700][  T227]  vprintk_emit (kernel/printk/printk.c:2479)
[   10.954703][  T227]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   10.954709][  T227]  _printk (kernel/printk/printk.c:2504)
[   10.954712][  T227]  ? snapshot_read.cold (user.c:?)
[   10.954714][  T227]  ? trace_hardirqs_off (kernel/trace/trace_preemptirq.c:104 (discriminator 1))
[   10.954717][  T227]  ? try_to_grab_pending (./include/linux/instrumented.h:112 ./include/asm-generic/bitops/instrumented-atomic.h:71 kernel/workqueue.c:2158)
[   10.954720][  T227]  ? mark_held_locks (kernel/locking/lockdep.c:4341)
[   10.954723][  T227]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4488)
[   10.954729][  T227] br_set_state (net/bridge/br_stp.c:57 (discriminator 2)) bridge
[   10.954738][  T227] br_init_port (net/bridge/br_stp_if.c:39) bridge
[   10.954745][  T227] br_stp_enable_bridge (net/bridge/br_stp_if.c:93 net/bridge/br_stp_if.c:62) bridge
[   10.954754][  T227] br_dev_open (net/bridge/br_device.c:170) bridge
[   10.954762][  T227]  __dev_open (net/core/dev.c:1724)
[   10.954765][  T227]  ? netif_state_change (./include/net/netdev_lock.h:33)
[   10.954766][  T227]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   10.954769][  T227]  ? mark_held_locks (kernel/locking/lockdep.c:4341)
[   10.954773][  T227]  __dev_change_flags (net/core/dev.c:9812)
[   10.954776][  T227]  ? netif_set_allmulti (./include/net/netdev_lock.h:33)
[   10.954778][  T227]  ? kernel_text_address (kernel/extable.c:125 kernel/extable.c:94)
[   10.954781][  T227]  ? __kernel_text_address (kernel/extable.c:79)
[   10.954782][  T227]  ? write_profile (profile.c:?)
[   10.954787][  T227]  netif_change_flags (net/core/dev.c:9877)
[   10.954790][  T227]  do_setlink.isra.0 (net/core/rtnetlink.c:3266 (discriminator 1))
[   10.954794][  T227]  ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1))
[   10.954796][  T227]  ? rtnl_link_get_size (net/core/rtnetlink.c:747)
[   10.954797][  T227]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380)
[   10.954800][  T227]  ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2))
[   10.954804][  T227]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   10.954806][  T227]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   10.954808][  T227]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   10.954810][  T227]  ? kasan_save_stack (mm/kasan/common.c:58)
[   10.954813][  T227]  ? kasan_save_stack (mm/kasan/common.c:57)
[   10.954815][  T227]  ? kasan_save_track (mm/kasan/common.c:78)
[   10.954818][  T227]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   10.954820][  T227]  ? netlink_update_listeners (net/netlink/af_netlink.c:532)
[   10.954823][  T227]  ? ___sys_sendmsg (net/socket.c:2744 net/socket.c:2763)
[   10.954828][  T227]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   10.954830][  T227]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   10.954832][  T227]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   10.954834][  T227]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   10.954835][  T227]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   10.954837][  T227]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   10.954838][  T227]  ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22))
[   10.954841][  T227]  ? __mutex_lock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:3188 kernel/locking/mutex.c:89 kernel/locking/mutex.c:134 kernel/locking/mutex.c:649 kernel/locking/mutex.c:821)
[   10.954843][  T227]  ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1))
[   10.954845][  T227]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   10.954848][  T227]  ? ww_mutex_lock (kernel/locking/mutex.c:934)
[   10.954853][  T227]  ? __rtnl_newlink (net/core/rtnetlink.c:4063)
[   10.954858][  T227]  rtnl_newlink (net/core/rtnetlink.c:4215)
[   10.954863][  T227]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   10.954865][  T227]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   10.954870][  T227]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   10.954872][  T227]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   10.954874][  T227]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   10.954875][  T227]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   10.954879][  T227]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   10.954881][  T227]  rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   10.954884][  T227]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   10.954885][  T227]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   10.954894][  T227]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   10.954896][  T227]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   10.954900][  T227]  netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   10.954901][  T227]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   10.954904][  T227]  ? netlink_ack (./include/linux/skbuff.h:2718)
[   10.954910][  T227]  ? netlink_deliver_tap (./include/linux/rcupdate.h:319 (discriminator 2) ./include/linux/rcupdate.h:880 (discriminator 2) ./include/net/netns/generic.h:48 (discriminator 2) net/netlink/af_netlink.c:334 (discriminator 2))
[   10.954911][  T227]  ? netlink_deliver_tap (./include/linux/rcupdate.h:319 (discriminator 2) ./include/linux/rcupdate.h:880 (discriminator 2) net/netlink/af_netlink.c:341 (discriminator 2))
[   10.954915][  T227]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   10.954919][  T227]  ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   10.954921][  T227]  ? __lock_acquire (kernel/locking/lockdep.c:5251 (discriminator 3))
[   10.954925][  T227]  netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   10.954929][  T227]  ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7))
[   10.954930][  T227]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   10.954933][  T227]  ? __might_fault (mm/memory.c:7482 (discriminator 5))
[   10.954937][  T227]  ? __might_fault (mm/memory.c:7482 (discriminator 5))
[   10.954941][  T227]  ____sys_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4) net/socket.c:2713 (discriminator 4))
[   10.954943][  T227]  ? copy_msghdr_from_user (net/socket.c:2650)
[   10.954945][  T227]  ? get_timestamp.constprop.0 (./include/linux/netdevice.h:5399)
[   10.954947][  T227]  ? move_addr_to_kernel (./include/linux/audit.h:354 (discriminator 1))
[   10.954954][  T227]  ___sys_sendmsg (net/socket.c:2767)
[   10.954956][  T227]  ? copy_msghdr_from_user (net/socket.c:2619)
[   10.954972][  T227]  __sys_sendmsg (net/socket.c:2799)
[   10.954975][  T227]  ? __sys_sendmsg_sock (net/socket.c:2780)
[   10.954981][  T227]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   10.954984][  T227]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   10.954986][  T227]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   10.954988][  T227]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   10.954990][  T227] RIP: 0033:0x7fe53b43f54e
[   10.954993][  T227] Code: 4d 89 d8 e8 b4 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 03 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 b4 bd 00 00       	call   0xbdbc
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 03 ff ff ff       	call   0xffffffffffffff3c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 03 ff ff ff       	call   0xffffffffffffff12
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[   10.954994][  T227] RSP: 002b:00007ffcb48b9a10 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
[   10.954997][  T227] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007fe53b43f54e
[   10.954998][  T227] RDX: 0000000000000000 RSI: 00007ffcb48b9ac0 RDI: 0000000000000005
[   10.954999][  T227] RBP: 00007ffcb48b9a20 R08: 0000000000000000 R09: 0000000000000000
[   10.954999][  T227] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a9115ba
[   10.955000][  T227] R13: 00000000004a1620 R14: 0000000000000000 R15: 00007ffcb48ba190
| [   12.978550][   T70] softirqs last disabled at (24870): br_device_event (./include/linux/spinlock.h:353 net/bridge/br.c:109) bridge
| [   12.978572][   T70] Preemption disabled at:
| [   12.978573][   T70] 0x0
| [   12.978592][   T70] Tainted: [W]=WARN
[   12.978596][   T70] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   12.978598][   T70] Workqueue: netns cleanup_net
[   12.978604][   T70] Call Trace:
[   12.978609][   T70]  <TASK>
[   12.978613][   T70]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   12.978626][   T70]  __might_resched.cold (kernel/sched/core.c:9234)
[   12.978638][   T70]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   12.978646][   T70]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   12.978659][   T70]  __kmalloc_noprof (./include/linux/sched/mm.h:322 (discriminator 2) mm/slub.c:4636 (discriminator 2) mm/slub.c:4974 (discriminator 2) mm/slub.c:5413 (discriminator 2) mm/slub.c:5439 (discriminator 2))
[   12.978667][   T70]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   12.978683][   T70]  ? do_raw_spin_unlock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:32 ./include/asm-generic/qspinlock.h:58 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141)
[   12.978691][   T70]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   12.978700][   T70]  put_chars (drivers/char/virtio_console.c:1176)
[   12.978710][   T70]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   12.978727][   T70]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   12.978742][   T70]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   12.978751][   T70]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   12.978764][   T70]  console_emit_next_record (kernel/printk/printk.c:3183)
[   12.978775][   T70]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   12.978780][   T70]  ? console_flush_one_record (./include/linux/rcupdate.h:314 (discriminator 2) ./include/linux/srcu.h:439 (discriminator 2) kernel/printk/printk.c:291 (discriminator 2) kernel/printk/printk.c:3246 (discriminator 2))
[   12.978789][   T70]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   12.978798][   T70]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   12.978811][   T70]  console_flush_one_record (kernel/printk/printk.c:3268)
[   12.978822][   T70]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   12.978827][   T70]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   12.978842][   T70]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   12.978851][   T70]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   12.978858][   T70]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   12.978863][   T70]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   12.978870][   T70]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   12.978872][   T70]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   12.978877][   T70]  vprintk_emit (kernel/printk/printk.c:2479)
[   12.978884][   T70]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   12.978886][   T70]  ? mark_held_locks (kernel/locking/lockdep.c:4341)
[   12.978904][   T70]  _printk (kernel/printk/printk.c:2504)
[   12.978909][   T70]  ? snapshot_read.cold (user.c:?)
[   12.978922][   T70] br_set_state (net/bridge/br_stp.c:57 (discriminator 2)) bridge
[   12.978941][   T70] br_stp_disable_port (net/bridge/br_stp_if.c:106) bridge
[   12.978957][   T70] br_device_event (net/bridge/br.c:111) bridge
[   12.978977][   T70]  ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:211 (discriminator 1) kernel/locking/spinlock.c:221 (discriminator 1))
[   12.978990][   T70]  ? _sub_I_65535_1+0x4d0/0x4d0 stp
[   12.979007][   T70]  notifier_call_chain (kernel/notifier.c:85)
[   12.979022][   T70]  netif_close_many (net/core/dev.c:2313 net/core/dev.c:2327 net/core/dev.c:1829)
[   12.979032][   T70]  ? trace_kfree (./include/trace/events/kmem.h:97 (discriminator 22))
[   12.979041][   T70]  ? __dev_close_many (net/core/dev.c:1804)
[   12.979051][   T70]  ? netif_close_many_and_unlock (net/core/dev.c:12411)
[   12.979061][   T70]  unregister_netdevice_many_notify (net/core/dev.c:12487)
[   12.979071][   T70]  ? ops_undo_list (net/core/net_namespace.c:206 net/core/net_namespace.c:253)
[   12.979075][   T70]  ? worker_thread (kernel/workqueue.c:3470 kernel/workqueue.c:3551)
[   12.979081][   T70]  ? kthread (kernel/kthread.c:436)
[   12.979088][   T70]  ? ret_from_fork (arch/x86/kernel/process.c:158)
[   12.979092][   T70]  ? ret_from_fork_asm (arch/x86/entry/entry_64.S:245)
[   12.979101][   T70]  ? unregister_netdevice_queued (./include/linux/list.h:419 (discriminator 3))
[   12.979112][   T70]  ? mark_held_locks (kernel/locking/lockdep.c:4341)
[   12.979128][   T70]  default_device_exit_batch (net/core/dev.c:12589 net/core/dev.c:13288)
[   12.979138][   T70]  ? generic_xdp_install (./include/linux/netdevice.h:5716 (discriminator 3))
[   12.979148][   T70]  ? unregister_netdevice_queue (./include/linux/list.h:173)
[   12.979156][   T70]  ? rtnl_is_locked (net/core/rtnetlink.c:169)
[   12.979163][   T70]  ? nexthop_net_exit_rtnl (./include/linux/rtnetlink.h:154 (discriminator 1) net/ipv4/nexthop.c:4172 (discriminator 1))
[   12.979169][   T70]  ? 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)
[   12.979181][   T70]  ops_undo_list (net/core/net_namespace.c:206 net/core/net_namespace.c:253)
[   12.979192][   T70]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4488)
[   12.979202][   T70]  ? rtnl_net_dumpid_one (net/core/net_namespace.c:1098)
[   12.979205][   T70]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   12.979216][   T70]  ? idr_destroy (lib/radix-tree.c:310 lib/radix-tree.c:674 lib/radix-tree.c:1563)
[   12.979228][   T70]  cleanup_net (net/core/net_namespace.c:706)
[   12.979238][   T70]  ? net_passive_dec (./include/linux/llist.h:241)
[   12.979248][   T70]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   12.979257][   T70]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   12.979266][   T70]  process_one_work (kernel/workqueue.c:3387)
[   12.979281][   T70]  ? __queue_delayed_work (kernel/workqueue.c:2622)
[   12.979292][   T70]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   12.979311][   T70]  worker_thread (kernel/workqueue.c:3470 kernel/workqueue.c:3551)
[   12.979321][   T70]  ? rescuer_thread (./include/linux/list.h:419 (discriminator 3))
[   12.979329][   T70]  ? __kthread_parkme (./include/linux/instrumented.h:82 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 kernel/kthread.c:272)
[   12.979335][   T70]  ? rescuer_thread (./include/linux/list.h:419 (discriminator 3))
[   12.979344][   T70]  ? rescuer_thread (./include/linux/list.h:419 (discriminator 3))
[   12.979351][   T70]  kthread (kernel/kthread.c:436)
[   12.979355][   T70]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[   12.979364][   T70]  ? kthread_affine_preferred (kernel/kthread.c:857)
[   12.979373][   T70]  ret_from_fork (arch/x86/kernel/process.c:158)
[   12.979381][   T70]  ? arch_exit_to_user_mode_prepare.isra.0 (arch/x86/entry/vdso/vma.c:80 (discriminator 1))
[   12.979392][   T70]  ? __switch_to (arch/x86/kernel/process_64.c:403 arch/x86/kernel/process_64.c:663)
[   12.979401][   T70]  ? kthread_affine_preferred (kernel/kthread.c:857)


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