======================================
| [   10.793869][  T240] softirqs last disabled at (25045): __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767)
| [   10.793871][  T240] Preemption disabled at:
| [   10.793872][  T240] vprintk_emit (kernel/printk/printk.c:2471)
| [   10.793881][  T240] Tainted: [W]=WARN
[   10.793881][  T240] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   10.793883][  T240] Call Trace:
[   10.793885][  T240]  <TASK>
[   10.793886][  T240]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   10.793892][  T240]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   10.793894][  T240]  __might_resched.cold (kernel/sched/core.c:9234)
[   10.793898][  T240]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   10.793903][  T240]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   10.793908][  T240]  __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))
[   10.793910][  T240]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   10.793916][  T240]  ? 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)
[   10.793918][  T240]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   10.793921][  T240]  put_chars (drivers/char/virtio_console.c:1176)
[   10.793924][  T240]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   10.793925][  T240]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   10.793930][  T240]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   10.793933][  T240]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   10.793937][  T240]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   10.793940][  T240]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   10.793945][  T240]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   10.793947][  T240]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   10.793952][  T240]  console_emit_next_record (kernel/printk/printk.c:3183)
[   10.793956][  T240]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   10.793958][  T240]  ? 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))
[   10.793961][  T240]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   10.793963][  T240]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   10.793967][  T240]  console_flush_one_record (kernel/printk/printk.c:3268)
[   10.793971][  T240]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   10.793973][  T240]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   10.793978][  T240]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   10.793981][  T240]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   10.793983][  T240]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   10.793985][  T240]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   10.793988][  T240]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   10.793990][  T240]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   10.793993][  T240]  vprintk_emit (kernel/printk/printk.c:2479)
[   10.793997][  T240]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   10.794003][  T240]  ? vlan_netlink_fini (./include/linux/etherdevice.h:306 net/8021q/vlan.c:316 net/8021q/vlan.c:416) 8021q
[   10.794006][  T240]  _printk (kernel/printk/printk.c:2504)
[   10.794010][  T240]  ? snapshot_read.cold (user.c:?)
[   10.794016][  T240]  ? do_one_initcall (./include/linux/instrumented.h:82 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 ./include/linux/cpumask.h:650 ./include/linux/cpumask.h:1232 ./include/trace/events/initcall.h:27 init/main.c:1356)
[   10.794019][  T240] vlan_proto_init (./include/linux/rcupdate.h:309 (discriminator 2) ./include/linux/rcupdate.h:849 (discriminator 2) ./include/net/netns/generic.h:45 (discriminator 2)) 8021q
[   10.794022][  T240]  do_one_initcall (init/main.c:1357)
[   10.794025][  T240]  ? trace_event_raw_event_initcall_level (./include/trace/events/initcall.h:10)
[   10.794029][  T240]  ? do_init_module (./include/linux/slab.h:991 (discriminator 1) kernel/module/main.c:3105 (discriminator 1))
[   10.794038][  T240]  ? kasan_unpoison (mm/kasan/shadow.c:146 mm/kasan/shadow.c:178)
[   10.794043][  T240]  do_init_module (kernel/module/main.c:3117)
[   10.794046][  T240]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4488)
[   10.794050][  T240]  ? free_module (./include/trace/events/module.h:50 (discriminator 19))
[   10.794053][  T240]  ? kfree (./include/linux/kasan.h:235 mm/slub.c:2748 mm/slub.c:6499 mm/slub.c:6792)
[   10.794057][  T240]  load_module (kernel/module/main.c:3593)
[   10.794064][  T240]  ? layout_and_allocate.isra.0 (kernel/module/main.c:3016)
[   10.794068][  T240]  ? __ia32_sys_fsconfig (??:?)
[   10.794071][  T240]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   10.794074][  T240]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   10.794077][  T240]  init_module_from_file (kernel/module/main.c:3790)
[   10.794080][  T240]  ? __do_sys_init_module (kernel/module/main.c:3664)
[   10.794088][  T240]  ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[   10.794092][  T240]  ? 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)
[   10.794094][  T240]  idempotent_init_module (kernel/module/main.c:3802)
[   10.794098][  T240]  ? init_module_from_file (kernel/module/main.c:3791)
[   10.794104][  T240]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   10.794106][  T240]  ? cap_capable (./include/trace/events/capability.h:26 (discriminator 22) security/commoncap.c:130 (discriminator 22))
[   10.794112][  T240]  __x64_sys_finit_module (kernel/module/main.c:3828 kernel/module/main.c:3812 kernel/module/main.c:3812)
[   10.794114][  T240]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[   10.794118][  T240]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   10.794119][  T240]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   10.794122][  T240]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   10.794124][  T240] RIP: 0033:0x7f08bb27937d
[   10.794128][  T240] 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
[   10.794129][  T240] RSP: 002b:00007ffe3c6a8ba8 EFLAGS: 00000246 ORIG_RAX: 0000000000000139
[   10.794132][  T240] RAX: ffffffffffffffda RBX: 000055578c383810 RCX: 00007f08bb27937d
[   10.794133][  T240] RDX: 0000000000000000 RSI: 000055576bd25ffd RDI: 0000000000000000
[   10.794134][  T240] RBP: 00007ffe3c6a8c40 R08: 0000000000000000 R09: 0000000000000000
[   10.794135][  T240] R10: 0000000000000000 R11: 0000000000000246 R12: 000055576bd25ffd
[   10.794136][  T240] R13: 000055578c383960 R14: 0000000000040000 R15: 0000000000000000
| [   11.990844][  T288] softirqs last disabled at (15262): __alloc_skb (./include/linux/bottom_half.h:20 (discriminator 2) net/core/skbuff.c:697 (discriminator 2))
| [   11.990847][  T288] Preemption disabled at:
| [   11.990847][  T288] vprintk_emit (kernel/printk/printk.c:2471)
| [   11.990856][  T288] Tainted: [W]=WARN
[   11.990857][  T288] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   11.990859][  T288] Call Trace:
[   11.990860][  T288]  <TASK>
[   11.990862][  T288]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   11.990868][  T288]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   11.990870][  T288]  __might_resched.cold (kernel/sched/core.c:9234)
[   11.990874][  T288]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   11.990878][  T288]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   11.990884][  T288]  __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))
[   11.990886][  T288]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   11.990891][  T288]  ? 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)
[   11.990894][  T288]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   11.990897][  T288]  put_chars (drivers/char/virtio_console.c:1176)
[   11.990900][  T288]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   11.990904][  T288]  ? validate_chain (kernel/locking/lockdep.c:159 kernel/locking/lockdep.c:191 kernel/locking/lockdep.c:3928)
[   11.990908][  T288]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   11.990911][  T288]  ? mark_usage (kernel/locking/lockdep.c:4690)
[   11.990912][  T288]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   11.990914][  T288]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   11.990918][  T288]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   11.990920][  T288]  ? console_emit_next_record (kernel/printk/printk.c:3095 (discriminator 2) kernel/printk/printk.c:3182 (discriminator 2))
[   11.990923][  T288]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   11.990927][  T288]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   11.990931][  T288]  console_emit_next_record (kernel/printk/printk.c:3183)
[   11.990934][  T288]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   11.990936][  T288]  ? 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))
[   11.990939][  T288]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   11.990941][  T288]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   11.990945][  T288]  console_flush_one_record (kernel/printk/printk.c:3268)
[   11.990949][  T288]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   11.990951][  T288]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   11.990956][  T288]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   11.990958][  T288]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   11.990960][  T288]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   11.990963][  T288]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   11.990966][  T288]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   11.990968][  T288]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   11.990971][  T288]  vprintk_emit (kernel/printk/printk.c:2479)
[   11.990975][  T288]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   11.990977][  T288]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   11.990979][  T288]  ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:211 (discriminator 1) kernel/locking/spinlock.c:221 (discriminator 1))
[   11.990983][  T288]  ? mark_held_locks (kernel/locking/lockdep.c:4341)
[   11.990987][  T288]  _printk (kernel/printk/printk.c:2504)
[   11.990990][  T288]  ? snapshot_read.cold (user.c:?)
[   11.990994][  T288]  ? br_multicast_flood (??:?) bridge
[   11.991006][  T288]  ? do_setlink.isra.0 (net/core/rtnetlink.c:3273 (discriminator 1))
[   11.991007][  T288]  ? rtnl_newlink (net/core/rtnetlink.c:4215)
[   11.991008][  T288]  ? rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   11.991012][  T288] br_set_state (net/bridge/br_stp.c:57 (discriminator 2)) bridge
[   11.991022][  T288] br_init_port (net/bridge/br_stp_if.c:39) bridge
[   11.991030][  T288] new_nbp (net/bridge/br_if.c:449) bridge
[   11.991043][  T288] br_add_if (net/bridge/br_if.c:592) bridge
[   11.991050][  T288]  ? is_bpf_text_address (./include/linux/rcupdate.h:882 kernel/bpf/core.c:751)
[   11.991054][  T288]  ? kernel_text_address (kernel/extable.c:125 kernel/extable.c:94)
[   11.991057][  T288]  ? __kernel_text_address (kernel/extable.c:79)
[   11.991060][  T288]  do_set_master (net/core/rtnetlink.c:3071)
[   11.991065][  T288]  do_setlink.isra.0 (net/core/rtnetlink.c:3273 (discriminator 1))
[   11.991068][  T288]  ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1))
[   11.991071][  T288]  ? rtnl_link_get_size (net/core/rtnetlink.c:747)
[   11.991072][  T288]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380)
[   11.991075][  T288]  ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2))
[   11.991078][  T288]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   11.991081][  T288]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   11.991082][  T288]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   11.991085][  T288]  ? kasan_save_stack (mm/kasan/common.c:58)
[   11.991088][  T288]  ? kasan_save_stack (mm/kasan/common.c:57)
[   11.991090][  T288]  ? kasan_save_track (mm/kasan/common.c:78)
[   11.991092][  T288]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   11.991094][  T288]  ? netlink_seq_next (net/netlink/af_netlink.c:2684)
[   11.991097][  T288]  ? ___sys_sendmsg (net/socket.c:2757)
[   11.991102][  T288]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   11.991103][  T288]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   11.991106][  T288]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   11.991108][  T288]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   11.991110][  T288]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   11.991111][  T288]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   11.991114][  T288]  ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22))
[   11.991118][  T288]  ? __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)
[   11.991119][  T288]  ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1))
[   11.991122][  T288]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   11.991125][  T288]  ? ww_mutex_lock (kernel/locking/mutex.c:934)
[   11.991126][  T288]  ? nla_get_range_signed (lib/nlattr.c:270)
[   11.991131][  T288]  ? __rtnl_newlink (net/core/rtnetlink.c:4063)
[   11.991136][  T288]  rtnl_newlink (net/core/rtnetlink.c:4215)
[   11.991141][  T288]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   11.991143][  T288]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   11.991147][  T288]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   11.991149][  T288]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   11.991151][  T288]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   11.991153][  T288]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   11.991156][  T288]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   11.991158][  T288]  rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   11.991161][  T288]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   11.991162][  T288]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   11.991166][  T288]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   11.991168][  T288]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   11.991172][  T288]  netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   11.991174][  T288]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   11.991177][  T288]  ? netlink_ack (./include/linux/skbuff.h:2718)
[   11.991182][  T288]  ? 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))
[   11.991184][  T288]  ? 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))
[   11.991188][  T288]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   11.991191][  T288]  ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   11.991194][  T288]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   11.991198][  T288]  netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   11.991202][  T288]  ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7))
[   11.991205][  T288]  ? __might_fault (mm/memory.c:7482 (discriminator 5))
[   11.991211][  T288]  ____sys_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4) net/socket.c:2713 (discriminator 4))
[   11.991213][  T288]  ? copy_msghdr_from_user (net/socket.c:2650)
[   11.991215][  T288]  ? get_timestamp.constprop.0 (./include/linux/netdevice.h:5399)
[   11.991217][  T288]  ? move_addr_to_kernel (net/socket.c:258)
[   11.991223][  T288]  ___sys_sendmsg (net/socket.c:2767)
[   11.991226][  T288]  ? copy_msghdr_from_user (net/socket.c:2619)
[   11.991243][  T288]  __sys_sendmsg (net/socket.c:2799)
[   11.991246][  T288]  ? __sys_sendmsg_sock (net/socket.c:2780)
[   11.991252][  T288]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   11.991255][  T288]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   11.991257][  T288]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   11.991260][  T288]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   11.991263][  T288] RIP: 0033:0x7f20747d054e
[   11.991266][  T288] 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
[   11.991268][  T288] RSP: 002b:00007fff33c163a0 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
[   11.991270][  T288] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007f20747d054e
[   11.991272][  T288] RDX: 0000000000000000 RSI: 00007fff33c16450 RDI: 0000000000000005
[   11.991272][  T288] RBP: 00007fff33c163b0 R08: 0000000000000000 R09: 0000000000000000
[   11.991273][  T288] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a91b7c4
[   11.991274][  T288] R13: 00000000004a1620 R14: 0000000000000000 R15: 00007fff33c16b10
| [   13.450269][  T339] softirqs last disabled at (11772): __alloc_skb (./include/linux/bottom_half.h:20 (discriminator 2) net/core/skbuff.c:697 (discriminator 2))
| [   13.450271][  T339] Preemption disabled at:
| [   13.450272][  T339] vprintk_emit (kernel/printk/printk.c:2471)
| [   13.450280][  T339] Tainted: [W]=WARN
[   13.450281][  T339] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   13.450283][  T339] Call Trace:
[   13.450285][  T339]  <TASK>
[   13.450286][  T339]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   13.450292][  T339]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   13.450294][  T339]  __might_resched.cold (kernel/sched/core.c:9234)
[   13.450299][  T339]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   13.450303][  T339]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   13.450308][  T339]  __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))
[   13.450310][  T339]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   13.450315][  T339]  ? 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)
[   13.450318][  T339]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   13.450321][  T339]  put_chars (drivers/char/virtio_console.c:1176)
[   13.450323][  T339]  ? prb_final_commit (kernel/printk/printk_ringbuffer.c:1842)
[   13.450325][  T339]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   13.450328][  T339]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   13.450332][  T339]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   13.450334][  T339]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   13.450338][  T339]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   13.450340][  T339]  ? mark_usage (kernel/locking/lockdep.c:4690)
[   13.450342][  T339]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   13.450344][  T339]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   13.450347][  T339]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   13.450349][  T339]  ? console_emit_next_record (kernel/printk/printk.c:3095 (discriminator 2) kernel/printk/printk.c:3182 (discriminator 2))
[   13.450352][  T339]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   13.450355][  T339]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   13.450358][  T339]  console_emit_next_record (kernel/printk/printk.c:3183)
[   13.450362][  T339]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   13.450364][  T339]  ? 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))
[   13.450367][  T339]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   13.450370][  T339]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   13.450373][  T339]  console_flush_one_record (kernel/printk/printk.c:3268)
[   13.450377][  T339]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   13.450379][  T339]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   13.450384][  T339]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   13.450387][  T339]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   13.450388][  T339]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   13.450391][  T339]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   13.450394][  T339]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   13.450396][  T339]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   13.450399][  T339]  vprintk_emit (kernel/printk/printk.c:2479)
[   13.450403][  T339]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   13.450405][  T339]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   13.450408][  T339]  ? mark_held_locks (kernel/locking/lockdep.c:4341)
[   13.450411][  T339]  _printk (kernel/printk/printk.c:2504)
[   13.450415][  T339]  ? snapshot_read.cold (user.c:?)
[   13.450419][  T339]  ? br_multicast_flood (??:?) bridge
[   13.450431][  T339]  ? do_setlink.isra.0 (net/core/rtnetlink.c:3273 (discriminator 1))
[   13.450432][  T339]  ? rtnl_newlink (net/core/rtnetlink.c:4215)
[   13.450433][  T339]  ? rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   13.450438][  T339] br_set_state (net/bridge/br_stp.c:57 (discriminator 2)) bridge
[   13.450447][  T339] br_init_port (net/bridge/br_stp_if.c:39) bridge
[   13.450455][  T339] new_nbp (net/bridge/br_if.c:449) bridge
[   13.450464][  T339] br_add_if (net/bridge/br_if.c:592) bridge
[   13.450471][  T339]  ? is_bpf_text_address (./include/linux/rcupdate.h:882 kernel/bpf/core.c:751)
[   13.450475][  T339]  ? kernel_text_address (kernel/extable.c:125 kernel/extable.c:94)
[   13.450478][  T339]  ? __kernel_text_address (kernel/extable.c:79)
[   13.450481][  T339]  do_set_master (net/core/rtnetlink.c:3071)
[   13.450486][  T339]  do_setlink.isra.0 (net/core/rtnetlink.c:3273 (discriminator 1))
[   13.450489][  T339]  ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1))
[   13.450492][  T339]  ? rtnl_link_get_size (net/core/rtnetlink.c:747)
[   13.450493][  T339]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380)
[   13.450495][  T339]  ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2))
[   13.450498][  T339]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   13.450501][  T339]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   13.450503][  T339]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   13.450505][  T339]  ? kasan_save_stack (mm/kasan/common.c:58)
[   13.450508][  T339]  ? kasan_save_stack (mm/kasan/common.c:57)
[   13.450510][  T339]  ? kasan_save_track (mm/kasan/common.c:78)
[   13.450512][  T339]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   13.450514][  T339]  ? netlink_seq_next (net/netlink/af_netlink.c:2684)
[   13.450517][  T339]  ? ___sys_sendmsg (net/socket.c:2757)
[   13.450522][  T339]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   13.450523][  T339]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   13.450526][  T339]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   13.450528][  T339]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   13.450530][  T339]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   13.450531][  T339]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   13.450534][  T339]  ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22))
[   13.450537][  T339]  ? __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)
[   13.450541][  T339]  ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1))
[   13.450543][  T339]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   13.450546][  T339]  ? ww_mutex_lock (kernel/locking/mutex.c:934)
[   13.450547][  T339]  ? nla_get_range_signed (lib/nlattr.c:270)
[   13.450552][  T339]  ? __rtnl_newlink (net/core/rtnetlink.c:4063)
[   13.450557][  T339]  rtnl_newlink (net/core/rtnetlink.c:4215)
[   13.450562][  T339]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   13.450564][  T339]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   13.450568][  T339]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   13.450570][  T339]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   13.450572][  T339]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   13.450573][  T339]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   13.450577][  T339]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   13.450579][  T339]  rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   13.450582][  T339]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   13.450583][  T339]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   13.450587][  T339]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   13.450589][  T339]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   13.450592][  T339]  netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   13.450594][  T339]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   13.450597][  T339]  ? netlink_ack (./include/linux/skbuff.h:2718)
[   13.450602][  T339]  ? 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))
[   13.450604][  T339]  ? 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))
[   13.450608][  T339]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   13.450612][  T339]  ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   13.450614][  T339]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   13.450618][  T339]  netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   13.450622][  T339]  ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7))
[   13.450625][  T339]  ? __might_fault (mm/memory.c:7482 (discriminator 5))
[   13.450630][  T339]  ____sys_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4) net/socket.c:2713 (discriminator 4))
[   13.450632][  T339]  ? copy_msghdr_from_user (net/socket.c:2650)
[   13.450635][  T339]  ? get_timestamp.constprop.0 (./include/linux/netdevice.h:5399)
[   13.450636][  T339]  ? move_addr_to_kernel (net/socket.c:258)
[   13.450643][  T339]  ___sys_sendmsg (net/socket.c:2767)
[   13.450646][  T339]  ? copy_msghdr_from_user (net/socket.c:2619)
[   13.450661][  T339]  __sys_sendmsg (net/socket.c:2799)
[   13.450664][  T339]  ? __sys_sendmsg_sock (net/socket.c:2780)
[   13.450670][  T339]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   13.450673][  T339]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   13.450675][  T339]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   13.450678][  T339]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   13.450680][  T339] RIP: 0033:0x7f971742754e
[   13.450684][  T339] 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
[   13.450685][  T339] RSP: 002b:00007ffeac9eaec0 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
[   13.450688][  T339] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007f971742754e
[   13.450690][  T339] RDX: 0000000000000000 RSI: 00007ffeac9eaf70 RDI: 0000000000000005
[   13.450690][  T339] RBP: 00007ffeac9eaed0 R08: 0000000000000000 R09: 0000000000000000
[   13.450691][  T339] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a91b7c5
[   13.450692][  T339] R13: 00000000004a1620 R14: 0000000000000000 R15: 00007ffeac9eb630
| [   14.668426][  T385] softirqs last disabled at (12678): __alloc_skb (./include/linux/bottom_half.h:20 (discriminator 2) net/core/skbuff.c:697 (discriminator 2))
| [   14.668429][  T385] Preemption disabled at:
| [   14.668429][  T385] vprintk_emit (kernel/printk/printk.c:2471)
| [   14.668438][  T385] Tainted: [W]=WARN
[   14.668439][  T385] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   14.668441][  T385] Call Trace:
[   14.668443][  T385]  <TASK>
[   14.668444][  T385]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   14.668450][  T385]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   14.668452][  T385]  __might_resched.cold (kernel/sched/core.c:9234)
[   14.668457][  T385]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   14.668461][  T385]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   14.668466][  T385]  __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))
[   14.668469][  T385]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   14.668474][  T385]  ? 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)
[   14.668477][  T385]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   14.668480][  T385]  put_chars (drivers/char/virtio_console.c:1176)
[   14.668482][  T385]  ? prb_final_commit (kernel/printk/printk_ringbuffer.c:1842)
[   14.668484][  T385]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   14.668487][  T385]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   14.668491][  T385]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   14.668493][  T385]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   14.668497][  T385]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   14.668500][  T385]  ? mark_usage (kernel/locking/lockdep.c:4690)
[   14.668502][  T385]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   14.668503][  T385]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   14.668507][  T385]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   14.668509][  T385]  ? console_emit_next_record (kernel/printk/printk.c:3095 (discriminator 2) kernel/printk/printk.c:3182 (discriminator 2))
[   14.668512][  T385]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   14.668514][  T385]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   14.668518][  T385]  console_emit_next_record (kernel/printk/printk.c:3183)
[   14.668522][  T385]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   14.668524][  T385]  ? 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))
[   14.668527][  T385]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   14.668529][  T385]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   14.668533][  T385]  console_flush_one_record (kernel/printk/printk.c:3268)
[   14.668537][  T385]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   14.668539][  T385]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   14.668544][  T385]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   14.668547][  T385]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   14.668549][  T385]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   14.668551][  T385]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   14.668555][  T385]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   14.668556][  T385]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   14.668560][  T385]  vprintk_emit (kernel/printk/printk.c:2479)
[   14.668564][  T385]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   14.668566][  T385]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   14.668569][  T385]  ? mark_held_locks (kernel/locking/lockdep.c:4341)
[   14.668572][  T385]  _printk (kernel/printk/printk.c:2504)
[   14.668576][  T385]  ? snapshot_read.cold (user.c:?)
[   14.668580][  T385]  ? br_multicast_flood (??:?) bridge
[   14.668593][  T385]  ? do_setlink.isra.0 (net/core/rtnetlink.c:3273 (discriminator 1))
[   14.668594][  T385]  ? rtnl_newlink (net/core/rtnetlink.c:4215)
[   14.668596][  T385]  ? rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   14.668600][  T385] br_set_state (net/bridge/br_stp.c:57 (discriminator 2)) bridge
[   14.668611][  T385] br_init_port (net/bridge/br_stp_if.c:39) bridge
[   14.668620][  T385] new_nbp (net/bridge/br_if.c:449) bridge
[   14.668630][  T385] br_add_if (net/bridge/br_if.c:592) bridge
[   14.668637][  T385]  ? is_bpf_text_address (./include/linux/rcupdate.h:882 kernel/bpf/core.c:751)
[   14.668641][  T385]  ? kernel_text_address (kernel/extable.c:125 kernel/extable.c:94)
[   14.668644][  T385]  ? __kernel_text_address (kernel/extable.c:79)
[   14.668648][  T385]  do_set_master (net/core/rtnetlink.c:3071)
[   14.668652][  T385]  do_setlink.isra.0 (net/core/rtnetlink.c:3273 (discriminator 1))
[   14.668656][  T385]  ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1))
[   14.668659][  T385]  ? rtnl_link_get_size (net/core/rtnetlink.c:747)
[   14.668660][  T385]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380)
[   14.668662][  T385]  ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2))
[   14.668665][  T385]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   14.668668][  T385]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   14.668669][  T385]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   14.668672][  T385]  ? kasan_save_stack (mm/kasan/common.c:58)
[   14.668675][  T385]  ? kasan_save_stack (mm/kasan/common.c:57)
[   14.668677][  T385]  ? kasan_save_track (mm/kasan/common.c:78)
[   14.668679][  T385]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   14.668681][  T385]  ? netlink_seq_next (net/netlink/af_netlink.c:2684)
[   14.668684][  T385]  ? ___sys_sendmsg (net/socket.c:2757)
[   14.668689][  T385]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   14.668691][  T385]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   14.668693][  T385]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   14.668696][  T385]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   14.668697][  T385]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   14.668699][  T385]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   14.668701][  T385]  ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22))
[   14.668705][  T385]  ? __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)
[   14.668708][  T385]  ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1))
[   14.668710][  T385]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   14.668714][  T385]  ? ww_mutex_lock (kernel/locking/mutex.c:934)
[   14.668715][  T385]  ? nla_get_range_signed (lib/nlattr.c:270)
[   14.668720][  T385]  ? __rtnl_newlink (net/core/rtnetlink.c:4063)
[   14.668725][  T385]  rtnl_newlink (net/core/rtnetlink.c:4215)
[   14.668731][  T385]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   14.668733][  T385]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   14.668737][  T385]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   14.668739][  T385]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   14.668741][  T385]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   14.668742][  T385]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   14.668746][  T385]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   14.668748][  T385]  rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   14.668751][  T385]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   14.668752][  T385]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   14.668757][  T385]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   14.668759][  T385]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   14.668762][  T385]  netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   14.668764][  T385]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   14.668767][  T385]  ? netlink_ack (./include/linux/skbuff.h:2718)
[   14.668773][  T385]  ? 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))
[   14.668774][  T385]  ? 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))
[   14.668778][  T385]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   14.668782][  T385]  ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   14.668785][  T385]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   14.668789][  T385]  netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   14.668792][  T385]  ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7))
[   14.668796][  T385]  ? __might_fault (mm/memory.c:7482 (discriminator 5))
[   14.668801][  T385]  ____sys_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4) net/socket.c:2713 (discriminator 4))
[   14.668804][  T385]  ? copy_msghdr_from_user (net/socket.c:2650)
[   14.668806][  T385]  ? get_timestamp.constprop.0 (./include/linux/netdevice.h:5399)
[   14.668808][  T385]  ? move_addr_to_kernel (net/socket.c:258)
[   14.668815][  T385]  ___sys_sendmsg (net/socket.c:2767)
[   14.668817][  T385]  ? copy_msghdr_from_user (net/socket.c:2619)
[   14.668833][  T385]  __sys_sendmsg (net/socket.c:2799)
[   14.668836][  T385]  ? __sys_sendmsg_sock (net/socket.c:2780)
[   14.668842][  T385]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   14.668846][  T385]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   14.668848][  T385]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   14.668851][  T385]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   14.668853][  T385] RIP: 0033:0x7efc8b00854e
[   14.668856][  T385] 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
[   14.668858][  T385] RSP: 002b:00007ffc98fd3370 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
[   14.668861][  T385] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007efc8b00854e
[   14.668862][  T385] RDX: 0000000000000000 RSI: 00007ffc98fd3420 RDI: 0000000000000005
[   14.668863][  T385] RBP: 00007ffc98fd3380 R08: 0000000000000000 R09: 0000000000000000
[   14.668864][  T385] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a91b7c7
[   14.668865][  T385] R13: 00000000004a1620 R14: 0000000000000000 R15: 00007ffc98fd3ae0
| [   24.493424][   T71] softirqs last disabled at (45085): __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767)
| [   24.493426][   T71] Preemption disabled at:
| [   24.493427][   T71] vprintk_emit (kernel/printk/printk.c:2471)
| [   24.493436][   T71] Tainted: [W]=WARN
[   24.493437][   T71] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   24.493439][   T71] Workqueue: netns cleanup_net
[   24.493442][   T71] Call Trace:
[   24.493444][   T71]  <TASK>
[   24.493446][   T71]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   24.493451][   T71]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   24.493453][   T71]  __might_resched.cold (kernel/sched/core.c:9234)
[   24.493458][   T71]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   24.493462][   T71]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   24.493467][   T71]  __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))
[   24.493470][   T71]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   24.493475][   T71]  ? 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)
[   24.493478][   T71]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   24.493481][   T71]  put_chars (drivers/char/virtio_console.c:1176)
[   24.493484][   T71]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   24.493488][   T71]  ? validate_chain (kernel/locking/lockdep.c:159 kernel/locking/lockdep.c:191 kernel/locking/lockdep.c:3928)
[   24.493492][   T71]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   24.493495][   T71]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   24.493496][   T71]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   24.493501][   T71]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   24.493503][   T71]  ? console_emit_next_record (kernel/printk/printk.c:3095 (discriminator 2) kernel/printk/printk.c:3182 (discriminator 2))
[   24.493506][   T71]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   24.493510][   T71]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   24.493514][   T71]  console_emit_next_record (kernel/printk/printk.c:3183)
[   24.493518][   T71]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   24.493520][   T71]  ? 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))
[   24.493523][   T71]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   24.493526][   T71]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   24.493530][   T71]  console_flush_one_record (kernel/printk/printk.c:3268)
[   24.493534][   T71]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   24.493536][   T71]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   24.493542][   T71]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   24.493544][   T71]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   24.493546][   T71]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   24.493549][   T71]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   24.493553][   T71]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   24.493554][   T71]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   24.493558][   T71]  vprintk_emit (kernel/printk/printk.c:2479)
[   24.493562][   T71]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   24.493564][   T71]  ? process_one_work (kernel/workqueue.c:3387)
[   24.493566][   T71]  ? kthread (kernel/kthread.c:436)
[   24.493568][   T71]  ? ret_from_fork (arch/x86/kernel/process.c:158)
[   24.493570][   T71]  ? ret_from_fork_asm (arch/x86/entry/entry_64.S:245)
[   24.493575][   T71]  _printk (kernel/printk/printk.c:2504)
[   24.493579][   T71]  ? snapshot_read.cold (user.c:?)
[   24.493583][   T71]  ? netdev_name (./include/linux/netdevice.h:5709 (discriminator 1))
[   24.493587][   T71]  ? __netdev_printk (net/core/dev.c:13148 (discriminator 2))
[   24.493590][   T71]  netdev_info (net/core/dev.c:13195 (discriminator 3))
[   24.493593][   T71]  ? netdev_notice (net/core/dev.c:13194)
[   24.493597][   T71]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   24.493599][   T71]  ? __up_read (kernel/locking/rwsem.c:1397 (discriminator 1))
[   24.493602][   T71]  ? down_write_nested (kernel/locking/rwsem.c:1759)
[   24.493604][   T71]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   24.493606][   T71]  ? 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)
[   24.493610][   T71]  netif_set_allmulti.cold (net/core/dev.c:9731 (discriminator 3))
[   24.493614][   T71]  dev_set_allmulti (net/core/dev_api.c:315)
[   24.493618][   T71] del_nbp (net/bridge/br_if.c:253 net/bridge/br_if.c:341) bridge
[   24.493634][   T71] br_dev_delete (net/bridge/br_if.c:387) bridge
[   24.493644][   T71] br_net_exit_rtnl (net/bridge/br.c:414) bridge
[   24.493652][   T71]  ops_undo_list (net/core/net_namespace.c:181 net/core/net_namespace.c:249)
[   24.493656][   T71]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4488)
[   24.493660][   T71]  ? rtnl_net_dumpid_one (net/core/net_namespace.c:1098)
[   24.493662][   T71]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   24.493665][   T71]  ? idr_destroy (lib/radix-tree.c:310 lib/radix-tree.c:674 lib/radix-tree.c:1563)
[   24.493670][   T71]  cleanup_net (net/core/net_namespace.c:706)
[   24.493673][   T71]  ? net_passive_dec (./include/linux/llist.h:241)
[   24.493677][   T71]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   24.493679][   T71]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   24.493683][   T71]  process_one_work (kernel/workqueue.c:3387)
[   24.493690][   T71]  ? __queue_delayed_work (kernel/workqueue.c:2622)
[   24.493693][   T71]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   24.493701][   T71]  worker_thread (kernel/workqueue.c:3470 kernel/workqueue.c:3551)
[   24.493705][   T71]  ? rescuer_thread (./include/linux/list.h:419 (discriminator 3))
[   24.493707][   T71]  ? __kthread_parkme (./include/linux/instrumented.h:82 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 kernel/kthread.c:272)
[   24.493710][   T71]  ? rescuer_thread (./include/linux/list.h:419 (discriminator 3))
[   24.493713][   T71]  ? rescuer_thread (./include/linux/list.h:419 (discriminator 3))
[   24.493715][   T71]  kthread (kernel/kthread.c:436)
[   24.493716][   T71]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[   24.493719][   T71]  ? kthread_affine_preferred (kernel/kthread.c:857)
[   24.493722][   T71]  ret_from_fork (arch/x86/kernel/process.c:158)
[   24.493725][   T71]  ? arch_exit_to_user_mode_prepare.isra.0 (arch/x86/entry/vdso/vma.c:80 (discriminator 1))
[   24.493728][   T71]  ? __switch_to (arch/x86/kernel/process_64.c:403 arch/x86/kernel/process_64.c:663)
[   24.493732][   T71]  ? kthread_affine_preferred (kernel/kthread.c:857)


Finger prints:
__alloc_skb:vprintk_emit:dump_stack_lvl:__kmalloc_noprof:put_chars
__irq_exit_rcu:vprintk_emit:dump_stack_lvl:__kmalloc_noprof:put_chars