======================================
| [   10.852092][  T238] softirqs last disabled at (20249): __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767)
| [   10.852094][  T238] Preemption disabled at:
| [   10.852095][  T238] vprintk_emit (kernel/printk/printk.c:2471)
| [   10.852104][  T238] Tainted: [W]=WARN
[   10.852105][  T238] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   10.852107][  T238] Call Trace:
[   10.852109][  T238]  <TASK>
[   10.852110][  T238]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   10.852116][  T238]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   10.852118][  T238]  __might_resched.cold (kernel/sched/core.c:9234)
[   10.852123][  T238]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   10.852127][  T238]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   10.852132][  T238]  __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))
[   10.852134][  T238]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   10.852140][  T238]  ? 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)
[   10.852142][  T238]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   10.852146][  T238]  put_chars (drivers/char/virtio_console.c:1176)
[   10.852148][  T238]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   10.852150][  T238]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   10.852154][  T238]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   10.852157][  T238]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   10.852161][  T238]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   10.852163][  T238]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   10.852168][  T238]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   10.852171][  T238]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   10.852175][  T238]  console_emit_next_record (kernel/printk/printk.c:3183)
[   10.852179][  T238]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   10.852181][  T238]  ? 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))
[   10.852184][  T238]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   10.852186][  T238]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   10.852190][  T238]  console_flush_one_record (kernel/printk/printk.c:3268)
[   10.852194][  T238]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   10.852196][  T238]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   10.852201][  T238]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   10.852204][  T238]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   10.852205][  T238]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   10.852208][  T238]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   10.852211][  T238]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   10.852213][  T238]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   10.852216][  T238]  vprintk_emit (kernel/printk/printk.c:2479)
[   10.852220][  T238]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   10.852225][  T238]  ? vlan_netlink_fini (./include/linux/etherdevice.h:306 net/8021q/vlan.c:316 net/8021q/vlan.c:416) 8021q
[   10.852229][  T238]  _printk (kernel/printk/printk.c:2504)
[   10.852233][  T238]  ? snapshot_read.cold (user.c:?)
[   10.852239][  T238]  ? 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)
[   10.852242][  T238] 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
[   10.852245][  T238]  do_one_initcall (init/main.c:1357)
[   10.852248][  T238]  ? trace_event_raw_event_initcall_level (./include/trace/events/initcall.h:10)
[   10.852252][  T238]  ? do_init_module (./include/linux/slab.h:991 (discriminator 1) kernel/module/main.c:3105 (discriminator 1))
[   10.852255][  T238]  ? kasan_unpoison (mm/kasan/shadow.c:146 mm/kasan/shadow.c:178)
[   10.852260][  T238]  do_init_module (kernel/module/main.c:3117)
[   10.852263][  T238]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4488)
[   10.852267][  T238]  ? free_module (./include/trace/events/module.h:50 (discriminator 19))
[   10.852271][  T238]  ? kfree (./include/linux/kasan.h:235 mm/slub.c:2748 mm/slub.c:6499 mm/slub.c:6792)
[   10.852274][  T238]  load_module (kernel/module/main.c:3593)
[   10.852281][  T238]  ? layout_and_allocate.isra.0 (kernel/module/main.c:3016)
[   10.852285][  T238]  ? __ia32_sys_fsconfig (??:?)
[   10.852288][  T238]  ? ovl_real_file (fs/overlayfs/file.c:195)
[   10.852292][  T238]  ? backing_file_read_iter (fs/backing-file.c:211)
[   10.852295][  T238]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   10.852299][  T238]  init_module_from_file (kernel/module/main.c:3790)
[   10.852302][  T238]  ? __do_sys_init_module (kernel/module/main.c:3664)
[   10.852310][  T238]  ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[   10.852313][  T238]  ? 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)
[   10.852316][  T238]  idempotent_init_module (kernel/module/main.c:3802)
[   10.852320][  T238]  ? init_module_from_file (kernel/module/main.c:3791)
[   10.852326][  T238]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   10.852328][  T238]  ? cap_capable (./include/trace/events/capability.h:26 (discriminator 22) security/commoncap.c:130 (discriminator 22))
[   10.852334][  T238]  __x64_sys_finit_module (kernel/module/main.c:3828 kernel/module/main.c:3812 kernel/module/main.c:3812)
[   10.852336][  T238]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[   10.852339][  T238]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   10.852341][  T238]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   10.852344][  T238]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   10.852346][  T238] RIP: 0033:0x7f5e285b637d
[   10.852349][  T238] 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
[   10.852351][  T238] RSP: 002b:00007ffe5687ad88 EFLAGS: 00000246 ORIG_RAX: 0000000000000139
[   10.852354][  T238] RAX: ffffffffffffffda RBX: 0000556098ad2810 RCX: 00007f5e285b637d
[   10.852355][  T238] RDX: 0000000000000000 RSI: 000055609867cffd RDI: 0000000000000000
[   10.852356][  T238] RBP: 00007ffe5687ae20 R08: 0000000000000000 R09: 0000000000000000
[   10.852357][  T238] R10: 0000000000000000 R11: 0000000000000246 R12: 000055609867cffd
[   10.852357][  T238] R13: 0000556098ad2960 R14: 0000000000040000 R15: 0000000000000000
| [   12.205857][  T285] softirqs last disabled at (11956): __alloc_skb (./include/linux/bottom_half.h:20 (discriminator 2) net/core/skbuff.c:697 (discriminator 2))
| [   12.205860][  T285] Preemption disabled at:
| [   12.205861][  T285] vprintk_emit (kernel/printk/printk.c:2471)
| [   12.205874][  T285] Tainted: [W]=WARN
[   12.205875][  T285] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   12.205881][  T285] Call Trace:
[   12.205883][  T285]  <TASK>
[   12.205886][  T285]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   12.205894][  T285]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   12.205897][  T285]  __might_resched.cold (kernel/sched/core.c:9234)
[   12.205903][  T285]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   12.205909][  T285]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   12.205916][  T285]  __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))
[   12.205920][  T285]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   12.205929][  T285]  ? 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)
[   12.205932][  T285]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   12.205938][  T285]  put_chars (drivers/char/virtio_console.c:1176)
[   12.205942][  T285]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   12.205950][  T285]  ? validate_chain (kernel/locking/lockdep.c:159 kernel/locking/lockdep.c:191 kernel/locking/lockdep.c:3928)
[   12.205956][  T285]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   12.205961][  T285]  ? mark_usage (kernel/locking/lockdep.c:4690)
[   12.205963][  T285]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   12.205966][  T285]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   12.205973][  T285]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   12.205976][  T285]  ? console_emit_next_record (kernel/printk/printk.c:3095 (discriminator 2) kernel/printk/printk.c:3182 (discriminator 2))
[   12.205982][  T285]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   12.205987][  T285]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   12.205994][  T285]  console_emit_next_record (kernel/printk/printk.c:3183)
[   12.206003][  T285]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   12.206005][  T285]  ? 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))
[   12.206010][  T285]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   12.206014][  T285]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   12.206021][  T285]  console_flush_one_record (kernel/printk/printk.c:3268)
[   12.206028][  T285]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   12.206031][  T285]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   12.206041][  T285]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   12.206045][  T285]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   12.206048][  T285]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   12.206051][  T285]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   12.206058][  T285]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   12.206060][  T285]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   12.206066][  T285]  vprintk_emit (kernel/printk/printk.c:2479)
[   12.206073][  T285]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   12.206076][  T285]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   12.206079][  T285]  ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:211 (discriminator 1) kernel/locking/spinlock.c:221 (discriminator 1))
[   12.206085][  T285]  ? mark_held_locks (kernel/locking/lockdep.c:4341)
[   12.206091][  T285]  _printk (kernel/printk/printk.c:2504)
[   12.206096][  T285]  ? snapshot_read.cold (user.c:?)
[   12.206102][  T285]  ? br_multicast_flood (??:?) bridge
[   12.206121][  T285]  ? do_setlink.isra.0 (net/core/rtnetlink.c:3273 (discriminator 1))
[   12.206123][  T285]  ? rtnl_newlink (net/core/rtnetlink.c:4215)
[   12.206125][  T285]  ? rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   12.206133][  T285] br_set_state (net/bridge/br_stp.c:57 (discriminator 2)) bridge
[   12.206150][  T285] br_init_port (net/bridge/br_stp_if.c:39) bridge
[   12.206164][  T285] new_nbp (net/bridge/br_if.c:449) bridge
[   12.206181][  T285] br_add_if (net/bridge/br_if.c:592) bridge
[   12.206195][  T285]  ? is_bpf_text_address (./include/linux/rcupdate.h:882 kernel/bpf/core.c:751)
[   12.206200][  T285]  ? kernel_text_address (kernel/extable.c:125 kernel/extable.c:94)
[   12.206204][  T285]  ? __kernel_text_address (kernel/extable.c:79)
[   12.206211][  T285]  do_set_master (net/core/rtnetlink.c:3071)
[   12.206219][  T285]  do_setlink.isra.0 (net/core/rtnetlink.c:3273 (discriminator 1))
[   12.206224][  T285]  ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1))
[   12.206228][  T285]  ? rtnl_link_get_size (net/core/rtnetlink.c:747)
[   12.206231][  T285]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380)
[   12.206234][  T285]  ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2))
[   12.206239][  T285]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   12.206243][  T285]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   12.206246][  T285]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   12.206250][  T285]  ? kasan_save_stack (mm/kasan/common.c:58)
[   12.206254][  T285]  ? kasan_save_stack (mm/kasan/common.c:57)
[   12.206256][  T285]  ? kasan_save_track (mm/kasan/common.c:78)
[   12.206261][  T285]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   12.206264][  T285]  ? netlink_seq_next (net/netlink/af_netlink.c:2685)
[   12.206268][  T285]  ? ___sys_sendmsg (net/socket.c:2757)
[   12.206275][  T285]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   12.206278][  T285]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   12.206283][  T285]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   12.206286][  T285]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   12.206289][  T285]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   12.206291][  T285]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   12.206295][  T285]  ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22))
[   12.206300][  T285]  ? __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)
[   12.206303][  T285]  ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1))
[   12.206306][  T285]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   12.206312][  T285]  ? ww_mutex_lock (kernel/locking/mutex.c:934)
[   12.206315][  T285]  ? nla_get_range_signed (lib/nlattr.c:270)
[   12.206324][  T285]  ? __rtnl_newlink (net/core/rtnetlink.c:4063)
[   12.206334][  T285]  rtnl_newlink (net/core/rtnetlink.c:4215)
[   12.206344][  T285]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   12.206347][  T285]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   12.206355][  T285]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   12.206358][  T285]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   12.206361][  T285]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   12.206364][  T285]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   12.206371][  T285]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   12.206374][  T285]  rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   12.206380][  T285]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   12.206382][  T285]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   12.206390][  T285]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   12.206393][  T285]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   12.206399][  T285]  netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   12.206402][  T285]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   12.206407][  T285]  ? netlink_ack (./include/linux/skbuff.h:2718)
[   12.206418][  T285]  ? 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))
[   12.206421][  T285]  ? 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))
[   12.206429][  T285]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   12.206435][  T285]  ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   12.206440][  T285]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   12.206447][  T285]  netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   12.206454][  T285]  ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7))
[   12.206461][  T285]  ? __might_fault (mm/memory.c:7482 (discriminator 5))
[   12.206469][  T285]  ____sys_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4) net/socket.c:2713 (discriminator 4))
[   12.206473][  T285]  ? copy_msghdr_from_user (net/socket.c:2650)
[   12.206476][  T285]  ? get_timestamp.constprop.0 (./include/linux/netdevice.h:5399)
[   12.206479][  T285]  ? move_addr_to_kernel (net/socket.c:258)
[   12.206493][  T285]  ___sys_sendmsg (net/socket.c:2767)
[   12.206497][  T285]  ? copy_msghdr_from_user (net/socket.c:2619)
[   12.206527][  T285]  __sys_sendmsg (net/socket.c:2799)
[   12.206532][  T285]  ? __sys_sendmsg_sock (net/socket.c:2780)
[   12.206543][  T285]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   12.206549][  T285]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   12.206552][  T285]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   12.206558][  T285]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   12.206562][  T285] RIP: 0033:0x7f69168b254e
[   12.206567][  T285] 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
[   12.206569][  T285] RSP: 002b:00007ffe87e0fcb0 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
[   12.206573][  T285] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007f69168b254e
[   12.206575][  T285] RDX: 0000000000000000 RSI: 00007ffe87e0fd60 RDI: 0000000000000005
[   12.206577][  T285] RBP: 00007ffe87e0fcc0 R08: 0000000000000000 R09: 0000000000000000
[   12.206578][  T285] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a9138ae
[   12.206580][  T285] R13: 00000000004a1620 R14: 0000000000000000 R15: 00007ffe87e10420
| [   13.800720][  T336] softirqs last disabled at (11794): __alloc_skb (./include/linux/bottom_half.h:20 (discriminator 2) net/core/skbuff.c:697 (discriminator 2))
| [   13.800723][  T336] Preemption disabled at:
| [   13.800723][  T336] vprintk_emit (kernel/printk/printk.c:2471)
| [   13.800733][  T336] Tainted: [W]=WARN
[   13.800733][  T336] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   13.800735][  T336] Call Trace:
[   13.800736][  T336]  <TASK>
[   13.800738][  T336]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   13.800744][  T336]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   13.800746][  T336]  __might_resched.cold (kernel/sched/core.c:9234)
[   13.800750][  T336]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   13.800755][  T336]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   13.800760][  T336]  __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))
[   13.800762][  T336]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   13.800768][  T336]  ? 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)
[   13.800770][  T336]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   13.800773][  T336]  put_chars (drivers/char/virtio_console.c:1176)
[   13.800776][  T336]  ? prb_final_commit (kernel/printk/printk_ringbuffer.c:1842)
[   13.800778][  T336]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   13.800781][  T336]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   13.800785][  T336]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   13.800787][  T336]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   13.800791][  T336]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   13.800794][  T336]  ? mark_usage (kernel/locking/lockdep.c:4690)
[   13.800795][  T336]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   13.800797][  T336]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   13.800801][  T336]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   13.800803][  T336]  ? console_emit_next_record (kernel/printk/printk.c:3095 (discriminator 2) kernel/printk/printk.c:3182 (discriminator 2))
[   13.800806][  T336]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   13.800808][  T336]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   13.800812][  T336]  console_emit_next_record (kernel/printk/printk.c:3183)
[   13.800816][  T336]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   13.800818][  T336]  ? 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))
[   13.800821][  T336]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   13.800823][  T336]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   13.800827][  T336]  console_flush_one_record (kernel/printk/printk.c:3268)
[   13.800831][  T336]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   13.800833][  T336]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   13.800839][  T336]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   13.800841][  T336]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   13.800843][  T336]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   13.800845][  T336]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   13.800849][  T336]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   13.800851][  T336]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   13.800854][  T336]  vprintk_emit (kernel/printk/printk.c:2479)
[   13.800858][  T336]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   13.800861][  T336]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   13.800863][  T336]  ? mark_held_locks (kernel/locking/lockdep.c:4341)
[   13.800867][  T336]  _printk (kernel/printk/printk.c:2504)
[   13.800871][  T336]  ? snapshot_read.cold (user.c:?)
[   13.800874][  T336]  ? br_multicast_flood (??:?) bridge
[   13.800892][  T336]  ? do_setlink.isra.0 (net/core/rtnetlink.c:3273 (discriminator 1))
[   13.800894][  T336]  ? rtnl_newlink (net/core/rtnetlink.c:4215)
[   13.800895][  T336]  ? rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   13.800899][  T336] br_set_state (net/bridge/br_stp.c:57 (discriminator 2)) bridge
[   13.800910][  T336] br_init_port (net/bridge/br_stp_if.c:39) bridge
[   13.800918][  T336] new_nbp (net/bridge/br_if.c:449) bridge
[   13.800927][  T336] br_add_if (net/bridge/br_if.c:592) bridge
[   13.800934][  T336]  ? is_bpf_text_address (./include/linux/rcupdate.h:882 kernel/bpf/core.c:751)
[   13.800938][  T336]  ? kernel_text_address (kernel/extable.c:125 kernel/extable.c:94)
[   13.800941][  T336]  ? __kernel_text_address (kernel/extable.c:79)
[   13.800945][  T336]  do_set_master (net/core/rtnetlink.c:3071)
[   13.800949][  T336]  do_setlink.isra.0 (net/core/rtnetlink.c:3273 (discriminator 1))
[   13.800952][  T336]  ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1))
[   13.800955][  T336]  ? rtnl_link_get_size (net/core/rtnetlink.c:747)
[   13.800957][  T336]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380)
[   13.800959][  T336]  ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2))
[   13.800962][  T336]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   13.800965][  T336]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   13.800966][  T336]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   13.800969][  T336]  ? kasan_save_stack (mm/kasan/common.c:58)
[   13.800972][  T336]  ? kasan_save_stack (mm/kasan/common.c:57)
[   13.800973][  T336]  ? kasan_save_track (mm/kasan/common.c:78)
[   13.800976][  T336]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   13.800978][  T336]  ? netlink_seq_next (net/netlink/af_netlink.c:2685)
[   13.800981][  T336]  ? ___sys_sendmsg (net/socket.c:2757)
[   13.800985][  T336]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   13.800987][  T336]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   13.800989][  T336]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   13.800992][  T336]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   13.800993][  T336]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   13.800997][  T336]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   13.801000][  T336]  ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22))
[   13.801004][  T336]  ? __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)
[   13.801007][  T336]  ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1))
[   13.801009][  T336]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   13.801012][  T336]  ? ww_mutex_lock (kernel/locking/mutex.c:934)
[   13.801014][  T336]  ? nla_get_range_signed (lib/nlattr.c:270)
[   13.801019][  T336]  ? __rtnl_newlink (net/core/rtnetlink.c:4063)
[   13.801024][  T336]  rtnl_newlink (net/core/rtnetlink.c:4215)
[   13.801029][  T336]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   13.801031][  T336]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   13.801035][  T336]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   13.801037][  T336]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   13.801039][  T336]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   13.801041][  T336]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   13.801045][  T336]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   13.801046][  T336]  rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   13.801049][  T336]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   13.801051][  T336]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   13.801055][  T336]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   13.801057][  T336]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   13.801060][  T336]  netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   13.801062][  T336]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   13.801065][  T336]  ? netlink_ack (./include/linux/skbuff.h:2718)
[   13.801071][  T336]  ? 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))
[   13.801072][  T336]  ? 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))
[   13.801076][  T336]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   13.801080][  T336]  ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   13.801083][  T336]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   13.801087][  T336]  netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   13.801090][  T336]  ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7))
[   13.801094][  T336]  ? __might_fault (mm/memory.c:7482 (discriminator 5))
[   13.801099][  T336]  ____sys_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4) net/socket.c:2713 (discriminator 4))
[   13.801102][  T336]  ? copy_msghdr_from_user (net/socket.c:2650)
[   13.801104][  T336]  ? get_timestamp.constprop.0 (./include/linux/netdevice.h:5399)
[   13.801105][  T336]  ? move_addr_to_kernel (net/socket.c:258)
[   13.801113][  T336]  ___sys_sendmsg (net/socket.c:2767)
[   13.801115][  T336]  ? copy_msghdr_from_user (net/socket.c:2619)
[   13.801131][  T336]  __sys_sendmsg (net/socket.c:2799)
[   13.801133][  T336]  ? __sys_sendmsg_sock (net/socket.c:2780)
[   13.801139][  T336]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   13.801143][  T336]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   13.801145][  T336]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   13.801148][  T336]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   13.801151][  T336] RIP: 0033:0x7f9226e4054e
[   13.801154][  T336] 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
[   13.801156][  T336] RSP: 002b:00007ffe68476c30 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
[   13.801159][  T336] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007f9226e4054e
[   13.801160][  T336] RDX: 0000000000000000 RSI: 00007ffe68476ce0 RDI: 0000000000000005
[   13.801161][  T336] RBP: 00007ffe68476c40 R08: 0000000000000000 R09: 0000000000000000
[   13.801162][  T336] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a9138b0
[   13.801163][  T336] R13: 00000000004a1620 R14: 0000000000000000 R15: 00007ffe684773a0
| [   15.109940][  T383] softirqs last disabled at (11554): __alloc_skb (./include/linux/bottom_half.h:20 (discriminator 2) net/core/skbuff.c:697 (discriminator 2))
| [   15.109942][  T383] Preemption disabled at:
| [   15.109943][  T383] vprintk_emit (kernel/printk/printk.c:2471)
| [   15.109952][  T383] Tainted: [W]=WARN
[   15.109953][  T383] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   15.109954][  T383] Call Trace:
[   15.109956][  T383]  <TASK>
[   15.109958][  T383]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   15.109964][  T383]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   15.109966][  T383]  __might_resched.cold (kernel/sched/core.c:9234)
[   15.109971][  T383]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   15.109975][  T383]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   15.109980][  T383]  __kmalloc_noprof (./include/linux/sched/mm.h:322 (discriminator 2) mm/slub.c:4636 (discriminator 2) mm/slub.c:4974 (discriminator 2) mm/slub.c:5413 (discriminator 2) mm/slub.c:5439 (discriminator 2))
[   15.109983][  T383]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   15.109988][  T383]  ? do_raw_spin_unlock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:32 ./include/asm-generic/qspinlock.h:58 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141)
[   15.109991][  T383]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   15.109994][  T383]  put_chars (drivers/char/virtio_console.c:1176)
[   15.109998][  T383]  ? prb_final_commit (kernel/printk/printk_ringbuffer.c:1842)
[   15.110000][  T383]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   15.110003][  T383]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   15.110008][  T383]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   15.110010][  T383]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   15.110014][  T383]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   15.110017][  T383]  ? mark_usage (kernel/locking/lockdep.c:4690)
[   15.110019][  T383]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   15.110020][  T383]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   15.110024][  T383]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   15.110026][  T383]  ? console_emit_next_record (kernel/printk/printk.c:3095 (discriminator 2) kernel/printk/printk.c:3182 (discriminator 2))
[   15.110029][  T383]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   15.110032][  T383]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   15.110035][  T383]  console_emit_next_record (kernel/printk/printk.c:3183)
[   15.110039][  T383]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   15.110041][  T383]  ? console_flush_one_record (./include/linux/rcupdate.h:314 (discriminator 2) ./include/linux/srcu.h:439 (discriminator 2) kernel/printk/printk.c:291 (discriminator 2) kernel/printk/printk.c:3246 (discriminator 2))
[   15.110045][  T383]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   15.110047][  T383]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   15.110051][  T383]  console_flush_one_record (kernel/printk/printk.c:3268)
[   15.110055][  T383]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   15.110057][  T383]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   15.110062][  T383]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   15.110065][  T383]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   15.110067][  T383]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   15.110069][  T383]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   15.110073][  T383]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   15.110074][  T383]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   15.110078][  T383]  vprintk_emit (kernel/printk/printk.c:2479)
[   15.110082][  T383]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   15.110084][  T383]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   15.110087][  T383]  ? mark_held_locks (kernel/locking/lockdep.c:4341)
[   15.110091][  T383]  _printk (kernel/printk/printk.c:2504)
[   15.110094][  T383]  ? snapshot_read.cold (user.c:?)
[   15.110098][  T383]  ? br_multicast_flood (??:?) bridge
[   15.110111][  T383]  ? do_setlink.isra.0 (net/core/rtnetlink.c:3273 (discriminator 1))
[   15.110113][  T383]  ? rtnl_newlink (net/core/rtnetlink.c:4215)
[   15.110114][  T383]  ? rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   15.110118][  T383] br_set_state (net/bridge/br_stp.c:57 (discriminator 2)) bridge
[   15.110129][  T383] br_init_port (net/bridge/br_stp_if.c:39) bridge
[   15.110138][  T383] new_nbp (net/bridge/br_if.c:449) bridge
[   15.110147][  T383] br_add_if (net/bridge/br_if.c:592) bridge
[   15.110154][  T383]  ? is_bpf_text_address (./include/linux/rcupdate.h:882 kernel/bpf/core.c:751)
[   15.110158][  T383]  ? kernel_text_address (kernel/extable.c:125 kernel/extable.c:94)
[   15.110161][  T383]  ? __kernel_text_address (kernel/extable.c:79)
[   15.110165][  T383]  do_set_master (net/core/rtnetlink.c:3071)
[   15.110170][  T383]  do_setlink.isra.0 (net/core/rtnetlink.c:3273 (discriminator 1))
[   15.110173][  T383]  ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1))
[   15.110176][  T383]  ? rtnl_link_get_size (net/core/rtnetlink.c:747)
[   15.110178][  T383]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380)
[   15.110180][  T383]  ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2))
[   15.110183][  T383]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   15.110186][  T383]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   15.110188][  T383]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   15.110190][  T383]  ? kasan_save_stack (mm/kasan/common.c:58)
[   15.110194][  T383]  ? kasan_save_stack (mm/kasan/common.c:57)
[   15.110195][  T383]  ? kasan_save_track (mm/kasan/common.c:78)
[   15.110198][  T383]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   15.110200][  T383]  ? netlink_seq_next (net/netlink/af_netlink.c:2685)
[   15.110203][  T383]  ? ___sys_sendmsg (net/socket.c:2757)
[   15.110208][  T383]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   15.110210][  T383]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   15.110212][  T383]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   15.110215][  T383]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   15.110216][  T383]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   15.110218][  T383]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   15.110220][  T383]  ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22))
[   15.110224][  T383]  ? __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)
[   15.110227][  T383]  ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1))
[   15.110230][  T383]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   15.110233][  T383]  ? ww_mutex_lock (kernel/locking/mutex.c:934)
[   15.110235][  T383]  ? nla_get_range_signed (lib/nlattr.c:270)
[   15.110239][  T383]  ? __rtnl_newlink (net/core/rtnetlink.c:4063)
[   15.110245][  T383]  rtnl_newlink (net/core/rtnetlink.c:4215)
[   15.110250][  T383]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   15.110252][  T383]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   15.110256][  T383]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   15.110258][  T383]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   15.110260][  T383]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   15.110262][  T383]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   15.110266][  T383]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   15.110268][  T383]  rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   15.110271][  T383]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   15.110272][  T383]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   15.110277][  T383]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   15.110279][  T383]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   15.110282][  T383]  netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   15.110284][  T383]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   15.110287][  T383]  ? netlink_ack (./include/linux/skbuff.h:2718)
[   15.110293][  T383]  ? 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))
[   15.110295][  T383]  ? 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))
[   15.110299][  T383]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   15.110303][  T383]  ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   15.110305][  T383]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   15.110309][  T383]  netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   15.110313][  T383]  ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7))
[   15.110317][  T383]  ? __might_fault (mm/memory.c:7482 (discriminator 5))
[   15.110322][  T383]  ____sys_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4) net/socket.c:2713 (discriminator 4))
[   15.110325][  T383]  ? copy_msghdr_from_user (net/socket.c:2650)
[   15.110327][  T383]  ? get_timestamp.constprop.0 (./include/linux/netdevice.h:5399)
[   15.110329][  T383]  ? move_addr_to_kernel (net/socket.c:258)
[   15.110336][  T383]  ___sys_sendmsg (net/socket.c:2767)
[   15.110339][  T383]  ? copy_msghdr_from_user (net/socket.c:2619)
[   15.110355][  T383]  __sys_sendmsg (net/socket.c:2799)
[   15.110358][  T383]  ? __sys_sendmsg_sock (net/socket.c:2780)
[   15.110364][  T383]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   15.110367][  T383]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   15.110370][  T383]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   15.110373][  T383]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   15.110375][  T383] RIP: 0033:0x7fdcc9c1c54e
[   15.110378][  T383] 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
[   15.110380][  T383] RSP: 002b:00007ffefa057d40 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
[   15.110383][  T383] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007fdcc9c1c54e
[   15.110385][  T383] RDX: 0000000000000000 RSI: 00007ffefa057df0 RDI: 0000000000000005
[   15.110386][  T383] RBP: 00007ffefa057d50 R08: 0000000000000000 R09: 0000000000000000
[   15.110386][  T383] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a9138b1
[   15.110387][  T383] R13: 00000000004a1620 R14: 0000000000000000 R15: 00007ffefa0584b0
| [   24.991534][   T12] softirqs last disabled at (41384): vxlan_flush (./include/linux/spinlock.h:353 drivers/net/vxlan/vxlan_core.c:3094) vxlan
| [   24.991538][   T12] Preemption disabled at:
| [   24.991539][   T12] vprintk_emit (kernel/printk/printk.c:2471)
| [   24.991548][   T12] Tainted: [W]=WARN
[   24.991549][   T12] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   24.991551][   T12] Workqueue: netns cleanup_net
[   24.991555][   T12] Call Trace:
[   24.991556][   T12]  <TASK>
[   24.991558][   T12]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   24.991565][   T12]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   24.991567][   T12]  __might_resched.cold (kernel/sched/core.c:9234)
[   24.991572][   T12]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   24.991576][   T12]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   24.991581][   T12]  __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))
[   24.991584][   T12]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   24.991590][   T12]  ? 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)
[   24.991593][   T12]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   24.991596][   T12]  put_chars (drivers/char/virtio_console.c:1176)
[   24.991599][   T12]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   24.991603][   T12]  ? validate_chain (kernel/locking/lockdep.c:159 kernel/locking/lockdep.c:191 kernel/locking/lockdep.c:3928)
[   24.991607][   T12]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   24.991610][   T12]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   24.991612][   T12]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   24.991617][   T12]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   24.991618][   T12]  ? console_emit_next_record (kernel/printk/printk.c:3095 (discriminator 2) kernel/printk/printk.c:3182 (discriminator 2))
[   24.991622][   T12]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   24.991626][   T12]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   24.991630][   T12]  console_emit_next_record (kernel/printk/printk.c:3183)
[   24.991634][   T12]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   24.991636][   T12]  ? 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))
[   24.991639][   T12]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   24.991641][   T12]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   24.991646][   T12]  console_flush_one_record (kernel/printk/printk.c:3268)
[   24.991650][   T12]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   24.991652][   T12]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   24.991658][   T12]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   24.991661][   T12]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   24.991663][   T12]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   24.991665][   T12]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   24.991669][   T12]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   24.991671][   T12]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   24.991674][   T12]  vprintk_emit (kernel/printk/printk.c:2479)
[   24.991678][   T12]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   24.991680][   T12]  ? process_one_work (kernel/workqueue.c:3387)
[   24.991682][   T12]  ? kthread (kernel/kthread.c:436)
[   24.991684][   T12]  ? ret_from_fork (arch/x86/kernel/process.c:158)
[   24.991687][   T12]  ? ret_from_fork_asm (arch/x86/entry/entry_64.S:245)
[   24.991692][   T12]  _printk (kernel/printk/printk.c:2504)
[   24.991696][   T12]  ? snapshot_read.cold (user.c:?)
[   24.991700][   T12]  ? netdev_name (./include/linux/netdevice.h:5709 (discriminator 1))
[   24.991704][   T12]  ? __netdev_printk (net/core/dev.c:13148 (discriminator 2))
[   24.991708][   T12]  netdev_info (net/core/dev.c:13195 (discriminator 3))
[   24.991710][   T12]  ? netdev_notice (net/core/dev.c:13194)
[   24.991714][   T12]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   24.991717][   T12]  ? __up_read (kernel/locking/rwsem.c:1397 (discriminator 1))
[   24.991720][   T12]  ? down_write_nested (kernel/locking/rwsem.c:1759)
[   24.991721][   T12]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   24.991723][   T12]  ? 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)
[   24.991727][   T12]  netif_set_allmulti.cold (net/core/dev.c:9731 (discriminator 3))
[   24.991732][   T12]  dev_set_allmulti (net/core/dev_api.c:315)
[   24.991736][   T12] del_nbp (net/bridge/br_if.c:253 net/bridge/br_if.c:341) bridge
[   24.991750][   T12] br_dev_delete (net/bridge/br_if.c:387) bridge
[   24.991759][   T12] br_net_exit_rtnl (net/bridge/br.c:414) bridge
[   24.991768][   T12]  ops_undo_list (net/core/net_namespace.c:181 net/core/net_namespace.c:249)
[   24.991772][   T12]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4488)
[   24.991776][   T12]  ? rtnl_net_dumpid_one (net/core/net_namespace.c:1098)
[   24.991778][   T12]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   24.991781][   T12]  ? idr_destroy (lib/radix-tree.c:310 lib/radix-tree.c:674 lib/radix-tree.c:1563)
[   24.991786][   T12]  cleanup_net (net/core/net_namespace.c:706)
[   24.991789][   T12]  ? net_passive_dec (./include/linux/llist.h:241)
[   24.991793][   T12]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   24.991795][   T12]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   24.991799][   T12]  process_one_work (kernel/workqueue.c:3387)
[   24.991806][   T12]  ? __queue_delayed_work (kernel/workqueue.c:2622)
[   24.991809][   T12]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   24.991817][   T12]  worker_thread (kernel/workqueue.c:3470 kernel/workqueue.c:3551)
[   24.991824][   T12]  ? rescuer_thread (./include/linux/list.h:419 (discriminator 3))
[   24.991826][   T12]  kthread (kernel/kthread.c:436)
[   24.991828][   T12]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[   24.991831][   T12]  ? kthread_affine_preferred (kernel/kthread.c:857)
[   24.991834][   T12]  ret_from_fork (arch/x86/kernel/process.c:158)
[   24.991837][   T12]  ? arch_exit_to_user_mode_prepare.isra.0 (arch/x86/entry/vdso/vma.c:80 (discriminator 1))
[   24.991840][   T12]  ? __switch_to (arch/x86/kernel/process_64.c:403 arch/x86/kernel/process_64.c:663)
[   24.991844][   T12]  ? kthread_affine_preferred (kernel/kthread.c:857)
[   24.991847][   T12]  ret_from_fork_asm (arch/x86/entry/entry_64.S:245)
| [   26.020398][  T528] softirqs last disabled at (19004): __alloc_skb (./include/linux/bottom_half.h:20 (discriminator 2) net/core/skbuff.c:697 (discriminator 2))
| [   26.020401][  T528] Preemption disabled at:
| [   26.020402][  T528] vprintk_emit (kernel/printk/printk.c:2471)
| [   26.020414][  T528] Tainted: [W]=WARN
[   26.020415][  T528] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   26.020417][  T528] Call Trace:
[   26.020419][  T528]  <TASK>
[   26.020422][  T528]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   26.020429][  T528]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   26.020432][  T528]  __might_resched.cold (kernel/sched/core.c:9234)
[   26.020439][  T528]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   26.020445][  T528]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   26.020452][  T528]  __kmalloc_noprof (./include/linux/sched/mm.h:322 (discriminator 2) mm/slub.c:4636 (discriminator 2) mm/slub.c:4974 (discriminator 2) mm/slub.c:5413 (discriminator 2) mm/slub.c:5439 (discriminator 2))
[   26.020456][  T528]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   26.020464][  T528]  ? do_raw_spin_unlock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:32 ./include/asm-generic/qspinlock.h:58 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141)
[   26.020468][  T528]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   26.020473][  T528]  put_chars (drivers/char/virtio_console.c:1176)
[   26.020477][  T528]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   26.020479][  T528]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   26.020486][  T528]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   26.020495][  T528]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   26.020506][  T528]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   26.020509][  T528]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   26.020513][  T528]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   26.020520][  T528]  console_emit_next_record (kernel/printk/printk.c:3183)
[   26.020526][  T528]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   26.020528][  T528]  ? 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))
[   26.020534][  T528]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   26.020537][  T528]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   26.020544][  T528]  console_flush_one_record (kernel/printk/printk.c:3268)
[   26.020551][  T528]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   26.020554][  T528]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   26.020564][  T528]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   26.020568][  T528]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   26.020571][  T528]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   26.020574][  T528]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   26.020581][  T528]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   26.020583][  T528]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   26.020589][  T528]  vprintk_emit (kernel/printk/printk.c:2479)
[   26.020595][  T528]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   26.020598][  T528]  ? rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   26.020600][  T528]  ? netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   26.020604][  T528]  ? netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   26.020606][  T528]  ? ____sys_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4) net/socket.c:2713 (discriminator 4))
[   26.020610][  T528]  ? ___sys_sendmsg (net/socket.c:2767)
[   26.020612][  T528]  ? __sys_sendmsg (net/socket.c:2799)
[   26.020615][  T528]  ? do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   26.020622][  T528]  _printk (kernel/printk/printk.c:2504)
[   26.020627][  T528]  ? snapshot_read.cold (user.c:?)
[   26.020635][  T528]  ? netdev_name (./include/linux/netdevice.h:5709 (discriminator 1))
[   26.020640][  T528]  ? __netdev_printk (net/core/dev.c:13148 (discriminator 2))
[   26.020646][  T528]  netdev_info (net/core/dev.c:13195 (discriminator 3))
[   26.020650][  T528]  ? netdev_notice (net/core/dev.c:13194)
[   26.020656][  T528]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   26.020660][  T528]  ? __up_read (kernel/locking/rwsem.c:1397 (discriminator 1))
[   26.020665][  T528]  ? down_write_nested (kernel/locking/rwsem.c:1759)
[   26.020667][  T528]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   26.020670][  T528]  ? 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)
[   26.020676][  T528]  netif_set_allmulti.cold (net/core/dev.c:9731 (discriminator 3))
[   26.020683][  T528]  dev_set_allmulti (net/core/dev_api.c:315)
[   26.020688][  T528] del_nbp (net/bridge/br_if.c:253 net/bridge/br_if.c:341) bridge
[   26.020707][  T528]  ? is_bpf_text_address (./include/linux/rcupdate.h:882 kernel/bpf/core.c:751)
[   26.020716][  T528] br_del_if (net/bridge/br_if.c:732) bridge
[   26.020729][  T528]  ? rtnl_is_locked (net/core/rtnetlink.c:169)
[   26.020733][  T528]  do_set_master (net/core/rtnetlink.c:3055)
[   26.020740][  T528]  do_setlink.isra.0 (net/core/rtnetlink.c:3273 (discriminator 1))
[   26.020747][  T528]  ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1))
[   26.020751][  T528]  ? rtnl_link_get_size (net/core/rtnetlink.c:747)
[   26.020753][  T528]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380)
[   26.020757][  T528]  ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2))
[   26.020762][  T528]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   26.020765][  T528]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   26.020768][  T528]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   26.020773][  T528]  ? kasan_save_stack (mm/kasan/common.c:58)
[   26.020776][  T528]  ? kasan_save_stack (mm/kasan/common.c:57)
[   26.020779][  T528]  ? kasan_save_track (mm/kasan/common.c:78)
[   26.020783][  T528]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   26.020786][  T528]  ? netlink_seq_next (net/netlink/af_netlink.c:2685)
[   26.020789][  T528]  ? ___sys_sendmsg (net/socket.c:2757)
[   26.020795][  T528]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   26.020798][  T528]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   26.020802][  T528]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   26.020806][  T528]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   26.020808][  T528]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   26.020811][  T528]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   26.020814][  T528]  ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22))
[   26.020819][  T528]  ? __mutex_lock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:3188 kernel/locking/mutex.c:89 kernel/locking/mutex.c:134 kernel/locking/mutex.c:649 kernel/locking/mutex.c:821)
[   26.020822][  T528]  ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1))
[   26.020825][  T528]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   26.020831][  T528]  ? ww_mutex_lock (kernel/locking/mutex.c:934)
[   26.020834][  T528]  ? nla_get_range_signed (lib/nlattr.c:270)
[   26.020843][  T528]  ? __rtnl_newlink (net/core/rtnetlink.c:4063)
[   26.020852][  T528]  rtnl_newlink (net/core/rtnetlink.c:4215)
[   26.020862][  T528]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   26.020865][  T528]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   26.020873][  T528]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   26.020876][  T528]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   26.020879][  T528]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   26.020882][  T528]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   26.020889][  T528]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   26.020892][  T528]  rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   26.020898][  T528]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   26.020900][  T528]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   26.020907][  T528]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   26.020910][  T528]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   26.020917][  T528]  netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   26.020919][  T528]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   26.020924][  T528]  ? netlink_ack (./include/linux/skbuff.h:2718)
[   26.020940][  T528]  ? 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))
[   26.020942][  T528]  ? 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))
[   26.020950][  T528]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   26.020957][  T528]  ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   26.020961][  T528]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   26.020968][  T528]  netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   26.020975][  T528]  ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7))
[   26.020981][  T528]  ? __might_fault (mm/memory.c:7482 (discriminator 5))
[   26.020990][  T528]  ____sys_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4) net/socket.c:2713 (discriminator 4))
[   26.020993][  T528]  ? copy_msghdr_from_user (net/socket.c:2650)
[   26.020999][  T528]  ? get_timestamp.constprop.0 (./include/linux/netdevice.h:5399)
[   26.021001][  T528]  ? move_addr_to_kernel (net/socket.c:258)
[   26.021015][  T528]  ___sys_sendmsg (net/socket.c:2767)
[   26.021020][  T528]  ? copy_msghdr_from_user (net/socket.c:2619)
[   26.021050][  T528]  __sys_sendmsg (net/socket.c:2799)
[   26.021054][  T528]  ? __sys_sendmsg_sock (net/socket.c:2780)
[   26.021065][  T528]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   26.021071][  T528]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   26.021074][  T528]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   26.021079][  T528]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   26.021082][  T528] RIP: 0033:0x7ff118ba554e
[   26.021087][  T528] Code: 4d 89 d8 e8 b4 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 03 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 b4 bd 00 00       	call   0xbdbc
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 03 ff ff ff       	call   0xffffffffffffff3c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 03 ff ff ff       	call   0xffffffffffffff12
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[   26.021089][  T528] RSP: 002b:00007fffa78f3f30 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
[   26.021093][  T528] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007ff118ba554e
[   26.021095][  T528] RDX: 0000000000000000 RSI: 00007fffa78f3fe0 RDI: 0000000000000005
[   26.021097][  T528] RBP: 00007fffa78f3f40 R08: 0000000000000000 R09: 0000000000000000
[   26.021098][  T528] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a9138bc


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