======================================
| [   10.520724][  T241] softirqs last disabled at (26661): __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767)
| [   10.520727][  T241] Preemption disabled at:
| [   10.520727][  T241] vprintk_emit (kernel/printk/printk.c:2471)
| [   10.520737][  T241] Tainted: [W]=WARN
[   10.520737][  T241] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   10.520739][  T241] Call Trace:
[   10.520741][  T241]  <TASK>
[   10.520742][  T241]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   10.520748][  T241]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   10.520750][  T241]  __might_resched.cold (kernel/sched/core.c:9234)
[   10.520755][  T241]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   10.520759][  T241]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   10.520764][  T241]  __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))
[   10.520766][  T241]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   10.520772][  T241]  ? 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)
[   10.520774][  T241]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   10.520778][  T241]  put_chars (drivers/char/virtio_console.c:1176)
[   10.520780][  T241]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   10.520782][  T241]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   10.520786][  T241]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   10.520789][  T241]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   10.520793][  T241]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   10.520796][  T241]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   10.520801][  T241]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   10.520803][  T241]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   10.520808][  T241]  console_emit_next_record (kernel/printk/printk.c:3183)
[   10.520812][  T241]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   10.520814][  T241]  ? 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))
[   10.520817][  T241]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   10.520820][  T241]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   10.520823][  T241]  console_flush_one_record (kernel/printk/printk.c:3268)
[   10.520827][  T241]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   10.520829][  T241]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   10.520834][  T241]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   10.520837][  T241]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   10.520839][  T241]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   10.520841][  T241]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   10.520845][  T241]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   10.520847][  T241]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   10.520850][  T241]  vprintk_emit (kernel/printk/printk.c:2479)
[   10.520854][  T241]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   10.520859][  T241]  ? vlan_netlink_fini (./include/linux/etherdevice.h:306 net/8021q/vlan.c:316 net/8021q/vlan.c:416) 8021q
[   10.520864][  T241]  _printk (kernel/printk/printk.c:2504)
[   10.520868][  T241]  ? snapshot_read.cold (user.c:?)
[   10.520874][  T241]  ? 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)
[   10.520877][  T241] 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
[   10.520881][  T241]  do_one_initcall (init/main.c:1357)
[   10.520883][  T241]  ? trace_event_raw_event_initcall_level (./include/trace/events/initcall.h:10)
[   10.520888][  T241]  ? do_init_module (./include/linux/slab.h:991 (discriminator 1) kernel/module/main.c:3105 (discriminator 1))
[   10.520891][  T241]  ? kasan_unpoison (mm/kasan/shadow.c:146 mm/kasan/shadow.c:178)
[   10.520896][  T241]  do_init_module (kernel/module/main.c:3117)
[   10.520899][  T241]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4488)
[   10.520903][  T241]  ? free_module (./include/trace/events/module.h:50 (discriminator 19))
[   10.520907][  T241]  ? kfree (./include/linux/kasan.h:235 mm/slub.c:2748 mm/slub.c:6499 mm/slub.c:6792)
[   10.520911][  T241]  load_module (kernel/module/main.c:3593)
[   10.520918][  T241]  ? layout_and_allocate.isra.0 (kernel/module/main.c:3016)
[   10.520922][  T241]  ? __ia32_sys_fsconfig (??:?)
[   10.520924][  T241]  ? ovl_real_file (fs/overlayfs/file.c:195)
[   10.520928][  T241]  ? backing_file_read_iter (fs/backing-file.c:211)
[   10.520931][  T241]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   10.520935][  T241]  init_module_from_file (kernel/module/main.c:3790)
[   10.520938][  T241]  ? __do_sys_init_module (kernel/module/main.c:3664)
[   10.520952][  T241]  ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[   10.520956][  T241]  ? 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)
[   10.520959][  T241]  idempotent_init_module (kernel/module/main.c:3802)
[   10.520962][  T241]  ? init_module_from_file (kernel/module/main.c:3791)
[   10.520968][  T241]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   10.520971][  T241]  ? cap_capable (./include/trace/events/capability.h:26 (discriminator 22) security/commoncap.c:130 (discriminator 22))
[   10.520977][  T241]  __x64_sys_finit_module (kernel/module/main.c:3828 kernel/module/main.c:3812 kernel/module/main.c:3812)
[   10.520979][  T241]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[   10.520982][  T241]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   10.520984][  T241]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   10.520987][  T241]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   10.520989][  T241] RIP: 0033:0x7f5ad083137d
[   10.520993][  T241] 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
[   10.520995][  T241] RSP: 002b:00007ffe34e7ccf8 EFLAGS: 00000246 ORIG_RAX: 0000000000000139
[   10.520997][  T241] RAX: ffffffffffffffda RBX: 0000556748fa5810 RCX: 00007f5ad083137d
[   10.520999][  T241] RDX: 0000000000000000 RSI: 000055673bbafffd RDI: 0000000000000000
[   10.521000][  T241] RBP: 00007ffe34e7cd90 R08: 0000000000000000 R09: 0000000000000000
[   10.521001][  T241] R10: 0000000000000000 R11: 0000000000000246 R12: 000055673bbafffd
[   10.521001][  T241] R13: 0000556748fa5960 R14: 0000000000040000 R15: 0000000000000000
| [   12.454253][  T372] softirqs last disabled at (20064): __alloc_skb (./include/linux/bottom_half.h:20 (discriminator 2) net/core/skbuff.c:697 (discriminator 2))
| [   12.454255][  T372] Preemption disabled at:
| [   12.454255][  T372] vprintk_emit (kernel/printk/printk.c:2471)
| [   12.454265][  T372] Tainted: [W]=WARN
[   12.454266][  T372] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   12.454267][  T372] Call Trace:
[   12.454269][  T372]  <TASK>
[   12.454270][  T372]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   12.454277][  T372]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   12.454279][  T372]  __might_resched.cold (kernel/sched/core.c:9234)
[   12.454284][  T372]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   12.454288][  T372]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   12.454293][  T372]  __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))
[   12.454296][  T372]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   12.454301][  T372]  ? 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)
[   12.454304][  T372]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   12.454307][  T372]  put_chars (drivers/char/virtio_console.c:1176)
[   12.454310][  T372]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   12.454314][  T372]  ? validate_chain (kernel/locking/lockdep.c:159 kernel/locking/lockdep.c:191 kernel/locking/lockdep.c:3928)
[   12.454318][  T372]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   12.454320][  T372]  ? mark_usage (kernel/locking/lockdep.c:4690)
[   12.454322][  T372]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   12.454324][  T372]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   12.454328][  T372]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   12.454329][  T372]  ? console_emit_next_record (kernel/printk/printk.c:3095 (discriminator 2) kernel/printk/printk.c:3182 (discriminator 2))
[   12.454333][  T372]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   12.454337][  T372]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   12.454341][  T372]  console_emit_next_record (kernel/printk/printk.c:3183)
[   12.454344][  T372]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   12.454346][  T372]  ? 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))
[   12.454349][  T372]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   12.454351][  T372]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   12.454355][  T372]  console_flush_one_record (kernel/printk/printk.c:3268)
[   12.454359][  T372]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   12.454361][  T372]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   12.454366][  T372]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   12.454368][  T372]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   12.454370][  T372]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   12.454372][  T372]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   12.454376][  T372]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   12.454378][  T372]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   12.454381][  T372]  vprintk_emit (kernel/printk/printk.c:2479)
[   12.454385][  T372]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   12.454387][  T372]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   12.454389][  T372]  ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:211 (discriminator 1) kernel/locking/spinlock.c:221 (discriminator 1))
[   12.454397][  T372]  _printk (kernel/printk/printk.c:2504)
[   12.454401][  T372]  ? snapshot_read.cold (user.c:?)
[   12.454404][  T372]  ? br_multicast_flood (??:?) bridge
[   12.454417][  T372]  ? do_setlink.isra.0 (net/core/rtnetlink.c:3273 (discriminator 1))
[   12.454418][  T372]  ? rtnl_newlink (net/core/rtnetlink.c:4215)
[   12.454419][  T372]  ? rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   12.454424][  T372] br_set_state (net/bridge/br_stp.c:57 (discriminator 2)) bridge
[   12.454433][  T372] br_init_port (net/bridge/br_stp_if.c:39) bridge
[   12.454441][  T372] new_nbp (net/bridge/br_if.c:449) bridge
[   12.454450][  T372] br_add_if (net/bridge/br_if.c:592) bridge
[   12.454457][  T372]  ? is_bpf_text_address (./include/linux/rcupdate.h:882 kernel/bpf/core.c:751)
[   12.454461][  T372]  ? kernel_text_address (kernel/extable.c:125 kernel/extable.c:94)
[   12.454464][  T372]  ? __kernel_text_address (kernel/extable.c:79)
[   12.454467][  T372]  do_set_master (net/core/rtnetlink.c:3071)
[   12.454472][  T372]  do_setlink.isra.0 (net/core/rtnetlink.c:3273 (discriminator 1))
[   12.454475][  T372]  ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1))
[   12.454478][  T372]  ? rtnl_link_get_size (net/core/rtnetlink.c:747)
[   12.454479][  T372]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380)
[   12.454482][  T372]  ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2))
[   12.454485][  T372]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   12.454488][  T372]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   12.454490][  T372]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   12.454492][  T372]  ? kasan_save_stack (mm/kasan/common.c:58)
[   12.454495][  T372]  ? kasan_save_stack (mm/kasan/common.c:57)
[   12.454497][  T372]  ? kasan_save_track (mm/kasan/common.c:78)
[   12.454499][  T372]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   12.454501][  T372]  ? netlink_seq_next (net/netlink/af_netlink.c:2685)
[   12.454504][  T372]  ? ___sys_sendmsg (net/socket.c:2757)
[   12.454509][  T372]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   12.454511][  T372]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   12.454513][  T372]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   12.454515][  T372]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   12.454517][  T372]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   12.454518][  T372]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   12.454521][  T372]  ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22))
[   12.454524][  T372]  ? __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)
[   12.454526][  T372]  ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1))
[   12.454528][  T372]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   12.454531][  T372]  ? ww_mutex_lock (kernel/locking/mutex.c:934)
[   12.454533][  T372]  ? nla_get_range_signed (lib/nlattr.c:270)
[   12.454538][  T372]  ? __rtnl_newlink (net/core/rtnetlink.c:4063)
[   12.454543][  T372]  rtnl_newlink (net/core/rtnetlink.c:4215)
[   12.454548][  T372]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   12.454550][  T372]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   12.454554][  T372]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   12.454556][  T372]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   12.454558][  T372]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   12.454559][  T372]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   12.454563][  T372]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   12.454565][  T372]  rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   12.454568][  T372]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   12.454569][  T372]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   12.454573][  T372]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   12.454575][  T372]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   12.454578][  T372]  netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   12.454580][  T372]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   12.454583][  T372]  ? netlink_ack (./include/linux/skbuff.h:2718)
[   12.454589][  T372]  ? 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))
[   12.454590][  T372]  ? 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))
[   12.454594][  T372]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   12.454598][  T372]  ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   12.454601][  T372]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   12.454605][  T372]  netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   12.454608][  T372]  ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7))
[   12.454612][  T372]  ? __might_fault (mm/memory.c:7482 (discriminator 5))
[   12.454617][  T372]  ____sys_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4) net/socket.c:2713 (discriminator 4))
[   12.454619][  T372]  ? copy_msghdr_from_user (net/socket.c:2650)
[   12.454621][  T372]  ? get_timestamp.constprop.0 (./include/linux/netdevice.h:5399)
[   12.454623][  T372]  ? move_addr_to_kernel (net/socket.c:258)
[   12.454630][  T372]  ___sys_sendmsg (net/socket.c:2767)
[   12.454633][  T372]  ? copy_msghdr_from_user (net/socket.c:2619)
[   12.454648][  T372]  __sys_sendmsg (net/socket.c:2799)
[   12.454651][  T372]  ? __sys_sendmsg_sock (net/socket.c:2780)
[   12.454657][  T372]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   12.454660][  T372]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   12.454662][  T372]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   12.454665][  T372]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   12.454668][  T372] RIP: 0033:0x7fc4d7ff954e
[   12.454671][  T372] 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
[   12.454673][  T372] RSP: 002b:00007fffbbf6f9c0 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
[   12.454676][  T372] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007fc4d7ff954e
[   12.454677][  T372] RDX: 0000000000000000 RSI: 00007fffbbf6fa70 RDI: 0000000000000005
[   12.454678][  T372] RBP: 00007fffbbf6f9d0 R08: 0000000000000000 R09: 0000000000000000
[   12.454679][  T372] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a91306e
[   12.454680][  T372] R13: 00000000004a1620 R14: 0000000000000000 R15: 00007fffbbf70130
| [   13.586516][  T464] softirqs last disabled at (17357): __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767)
| [   13.586518][  T464] Preemption disabled at:
| [   13.586519][  T464] vprintk_emit (kernel/printk/printk.c:2471)
| [   13.586528][  T464] Tainted: [W]=WARN
[   13.586529][  T464] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   13.586530][  T464] Call Trace:
[   13.586532][  T464]  <TASK>
[   13.586534][  T464]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   13.586539][  T464]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   13.586542][  T464]  __might_resched.cold (kernel/sched/core.c:9234)
[   13.586546][  T464]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   13.586550][  T464]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   13.586555][  T464]  __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))
[   13.586557][  T464]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   13.586562][  T464]  ? 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)
[   13.586565][  T464]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   13.586568][  T464]  put_chars (drivers/char/virtio_console.c:1176)
[   13.586570][  T464]  ? prb_final_commit (kernel/printk/printk_ringbuffer.c:1842)
[   13.586572][  T464]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   13.586575][  T464]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   13.586579][  T464]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   13.586582][  T464]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   13.586585][  T464]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   13.586588][  T464]  ? mark_usage (kernel/locking/lockdep.c:4690)
[   13.586590][  T464]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   13.586591][  T464]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   13.586595][  T464]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   13.586597][  T464]  ? console_emit_next_record (kernel/printk/printk.c:3095 (discriminator 2) kernel/printk/printk.c:3182 (discriminator 2))
[   13.586600][  T464]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   13.586603][  T464]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   13.586607][  T464]  console_emit_next_record (kernel/printk/printk.c:3183)
[   13.586610][  T464]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   13.586612][  T464]  ? 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))
[   13.586615][  T464]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   13.586617][  T464]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   13.586621][  T464]  console_flush_one_record (kernel/printk/printk.c:3268)
[   13.586625][  T464]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   13.586627][  T464]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   13.586632][  T464]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   13.586635][  T464]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   13.586637][  T464]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   13.586639][  T464]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   13.586643][  T464]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   13.586644][  T464]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   13.586648][  T464]  vprintk_emit (kernel/printk/printk.c:2479)
[   13.586652][  T464]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   13.586654][  T464]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   13.586659][  T464]  _printk (kernel/printk/printk.c:2504)
[   13.586663][  T464]  ? snapshot_read.cold (user.c:?)
[   13.586666][  T464]  ? br_multicast_flood (??:?) bridge
[   13.586679][  T464]  ? do_setlink.isra.0 (net/core/rtnetlink.c:3273 (discriminator 1))
[   13.586680][  T464]  ? rtnl_newlink (net/core/rtnetlink.c:4215)
[   13.586682][  T464]  ? rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   13.586686][  T464] br_set_state (net/bridge/br_stp.c:57 (discriminator 2)) bridge
[   13.586696][  T464] br_init_port (net/bridge/br_stp_if.c:39) bridge
[   13.586704][  T464] new_nbp (net/bridge/br_if.c:449) bridge
[   13.586713][  T464] br_add_if (net/bridge/br_if.c:592) bridge
[   13.586720][  T464]  ? is_bpf_text_address (./include/linux/rcupdate.h:882 kernel/bpf/core.c:751)
[   13.586724][  T464]  ? kernel_text_address (kernel/extable.c:125 kernel/extable.c:94)
[   13.586727][  T464]  ? __kernel_text_address (kernel/extable.c:79)
[   13.586731][  T464]  do_set_master (net/core/rtnetlink.c:3071)
[   13.586736][  T464]  do_setlink.isra.0 (net/core/rtnetlink.c:3273 (discriminator 1))
[   13.586738][  T464]  ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1))
[   13.586742][  T464]  ? rtnl_link_get_size (net/core/rtnetlink.c:747)
[   13.586743][  T464]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380)
[   13.586745][  T464]  ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2))
[   13.586748][  T464]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   13.586751][  T464]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   13.586753][  T464]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   13.586755][  T464]  ? kasan_save_stack (mm/kasan/common.c:58)
[   13.586758][  T464]  ? kasan_save_stack (mm/kasan/common.c:57)
[   13.586760][  T464]  ? kasan_save_track (mm/kasan/common.c:78)
[   13.586762][  T464]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   13.586764][  T464]  ? netlink_seq_next (net/netlink/af_netlink.c:2685)
[   13.586767][  T464]  ? ___sys_sendmsg (net/socket.c:2757)
[   13.586772][  T464]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   13.586774][  T464]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   13.586776][  T464]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   13.586778][  T464]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   13.586780][  T464]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   13.586782][  T464]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   13.586784][  T464]  ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22))
[   13.586788][  T464]  ? __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)
[   13.586791][  T464]  ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1))
[   13.586793][  T464]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   13.586796][  T464]  ? ww_mutex_lock (kernel/locking/mutex.c:934)
[   13.586798][  T464]  ? nla_get_range_signed (lib/nlattr.c:270)
[   13.586802][  T464]  ? __rtnl_newlink (net/core/rtnetlink.c:4063)
[   13.586807][  T464]  rtnl_newlink (net/core/rtnetlink.c:4215)
[   13.586812][  T464]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   13.586814][  T464]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   13.586819][  T464]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   13.586820][  T464]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   13.586822][  T464]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   13.586824][  T464]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   13.586828][  T464]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   13.586830][  T464]  rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   13.586832][  T464]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   13.586834][  T464]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   13.586838][  T464]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   13.586840][  T464]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   13.586843][  T464]  netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   13.586845][  T464]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   13.586847][  T464]  ? netlink_ack (./include/linux/skbuff.h:2718)
[   13.586853][  T464]  ? 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))
[   13.586855][  T464]  ? 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))
[   13.586859][  T464]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   13.586862][  T464]  ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   13.586865][  T464]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   13.586869][  T464]  netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   13.586872][  T464]  ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7))
[   13.586876][  T464]  ? __might_fault (mm/memory.c:7482 (discriminator 5))
[   13.586881][  T464]  ____sys_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4) net/socket.c:2713 (discriminator 4))
[   13.586884][  T464]  ? copy_msghdr_from_user (net/socket.c:2650)
[   13.586886][  T464]  ? get_timestamp.constprop.0 (./include/linux/netdevice.h:5399)
[   13.586888][  T464]  ? move_addr_to_kernel (net/socket.c:258)
[   13.586895][  T464]  ___sys_sendmsg (net/socket.c:2767)
[   13.586897][  T464]  ? copy_msghdr_from_user (net/socket.c:2619)
[   13.586912][  T464]  __sys_sendmsg (net/socket.c:2799)
[   13.586915][  T464]  ? __sys_sendmsg_sock (net/socket.c:2780)
[   13.586921][  T464]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   13.586924][  T464]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   13.586927][  T464]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   13.586930][  T464]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   13.586932][  T464] RIP: 0033:0x7feb7937154e
[   13.586935][  T464] 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
[   13.586937][  T464] RSP: 002b:00007ffe942432d0 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
[   13.586940][  T464] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007feb7937154e
[   13.586941][  T464] RDX: 0000000000000000 RSI: 00007ffe94243380 RDI: 0000000000000005
[   13.586942][  T464] RBP: 00007ffe942432e0 R08: 0000000000000000 R09: 0000000000000000
[   13.586943][  T464] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a913070
[   13.586944][  T464] R13: 00000000004a1620 R14: 0000000000000000 R15: 00007ffe94243a40
| [   28.021479][    C2] softirqs last disabled at (816981): __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767)
| [   28.021481][    C2] Preemption disabled at:
| [   28.021481][    C2] 0x0
| [   28.021491][    C2] Tainted: [W]=WARN
[   28.021492][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   28.021495][    C2] Call Trace:
[   28.021496][    C2]  <IRQ>
[   28.021498][    C2]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   28.021503][    C2]  __might_resched.cold (kernel/sched/core.c:9234)
[   28.021507][    C2]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   28.021510][    C2]  ? __asan_memcpy (mm/kasan/shadow.c:106 (discriminator 1))
[   28.021513][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   28.021517][    C2]  __kmalloc_noprof (./include/linux/sched/mm.h:322 (discriminator 2) mm/slub.c:4636 (discriminator 2) mm/slub.c:4974 (discriminator 2) mm/slub.c:5413 (discriminator 2) mm/slub.c:5439 (discriminator 2))
[   28.021520][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[   28.021523][    C2]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   28.021526][    C2]  ? do_raw_spin_unlock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:32 ./include/asm-generic/qspinlock.h:58 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141)
[   28.021528][    C2]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   28.021530][    C2]  put_chars (drivers/char/virtio_console.c:1176)
[   28.021532][    C2]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   28.021533][    C2]  ? console_prepend_replay (kernel/printk/printk.c:3005)
[   28.021537][    C2]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   28.021540][    C2]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   28.021542][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   28.021543][    C2]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   28.021545][    C2]  console_emit_next_record (kernel/printk/printk.c:3183)
[   28.021548][    C2]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   28.021550][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   28.021552][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   28.021553][    C2]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   28.021555][    C2]  ? console_flush_one_record (kernel/printk/printk.c:3247)
[   28.021557][    C2]  console_flush_one_record (kernel/printk/printk.c:3268)
[   28.021559][    C2]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   28.021562][    C2]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   28.021563][    C2]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   28.021565][    C2]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   28.021566][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   28.021568][    C2]  ? lock_release (./include/trace/events/lock.h:68 (discriminator 22) kernel/locking/lockdep.c:5920 (discriminator 22))
[   28.021569][    C2]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   28.021571][    C2]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   28.021573][    C2]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   28.021575][    C2]  vprintk_emit (kernel/printk/printk.c:2479)
[   28.021577][    C2]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   28.021579][    C2]  ? br_forward_delay_timer_expired (./include/linux/spinlock.h:347 net/bridge/br_stp_timer.c:88) bridge
[   28.021591][    C2]  ? lock_release (./include/trace/events/lock.h:68 (discriminator 22) kernel/locking/lockdep.c:5920 (discriminator 22))
[   28.021592][    C2]  ? br_forward_delay_timer_expired (./include/linux/spinlock.h:347 net/bridge/br_stp_timer.c:88) bridge
[   28.021598][    C2]  ? br_forward_delay_timer_expired (./include/linux/spinlock.h:347 net/bridge/br_stp_timer.c:88) bridge
[   28.021604][    C2]  ? is_module_text_address (./include/linux/rcupdate.h:882 ./include/linux/rcupdate.h:1216 kernel/module/main.c:3934)
[   28.021607][    C2]  _printk (kernel/printk/printk.c:2504)
[   28.021611][    C2]  ? snapshot_read.cold (user.c:?)
[   28.021612][    C2]  ? arch_stack_walk (arch/x86/kernel/stacktrace.c:25)
[   28.021616][    C2]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   28.021618][    C2]  ? nbcon_cpu_emergency_enter (./include/linux/instrumented.h:112 ./include/linux/atomic/atomic-instrumented.h:435 kernel/printk/nbcon.c:1723)
[   28.021620][    C2]  print_irq_inversion_bug.part.0 (kernel/locking/lockdep.c:4097 (discriminator 1))
[   28.021623][    C2]  mark_lock_irq (kernel/locking/lockdep.c:4095 kernel/locking/lockdep.c:4174 kernel/locking/lockdep.c:4310)
[   28.021626][    C2]  mark_lock (kernel/locking/lockdep.c:4769)
[   28.021628][    C2]  mark_usage (kernel/locking/lockdep.c:4658)
[   28.021629][    C2]  __lock_acquire (kernel/locking/lockdep.c:5208)
[   28.021631][    C2]  lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   28.021633][    C2]  ? br_forward_delay_timer_expired (./include/linux/spinlock.h:347 net/bridge/br_stp_timer.c:88) bridge
[   28.021639][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   28.021641][    C2]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   28.021643][    C2]  ? br_message_age_timer_expired (net/bridge/br_stp_timer.c:54) bridge
[   28.021649][    C2]  _raw_spin_lock (./include/linux/spinlock_api_smp.h:190 (discriminator 1) kernel/locking/spinlock.c:173 (discriminator 1))
[   28.021651][    C2]  ? br_forward_delay_timer_expired (./include/linux/spinlock.h:347 net/bridge/br_stp_timer.c:88) bridge
[   28.021656][    C2] br_forward_delay_timer_expired (./include/linux/spinlock.h:347 net/bridge/br_stp_timer.c:88) bridge
[   28.021663][    C2]  ? br_message_age_timer_expired (net/bridge/br_stp_timer.c:54) bridge
[   28.021669][    C2]  call_timer_fn (kernel/time/timer.c:1748)
[   28.021671][    C2]  ? detach_if_pending (./include/linux/list.h:1159)
[   28.021673][    C2]  ? debug_object_active_state (lib/debugobjects.c:1122)
[   28.021677][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   28.021678][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   28.021680][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   28.021682][    C2]  __run_timers (kernel/time/timer.c:1799 kernel/time/timer.c:2374)
[   28.021684][    C2]  ? br_message_age_timer_expired (net/bridge/br_stp_timer.c:54) bridge
[   28.021691][    C2]  ? __bpf_trace_itimer_expire (./include/trace/events/timer.h:407)
[   28.021692][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   28.021695][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[   28.021697][    C2]  run_timer_softirq (kernel/time/timer.c:2386 kernel/time/timer.c:2395 kernel/time/timer.c:2403)
[   28.021699][    C2]  ? __run_timers (./include/trace/events/timer.h:138 (discriminator 19))
[   28.021701][    C2]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[   28.021703][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   28.021705][    C2]  handle_softirqs (kernel/softirq.c:645)
[   28.021707][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   28.021708][    C2]  ? _local_bh_enable (kernel/softirq.c:428 (discriminator 1))
[   28.021710][    C2]  __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767)
[   28.021712][    C2]  irq_exit_rcu (kernel/softirq.c:784)
[   28.021713][    C2]  sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1062 (discriminator 37) arch/x86/kernel/apic/apic.c:1062 (discriminator 37))
[   28.021716][    C2]  </IRQ>
[   28.021716][    C2]  <TASK>
[   28.021717][    C2]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4488)
[   28.021719][    C2]  asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:674)
[   28.021721][    C2] RIP: 0010:pv_native_safe_halt (./arch/x86/include/asm/irqflags.h:48 arch/x86/kernel/paravirt.c:63)
[   28.021724][    C2] Code: 48 8b 3d 94 e2 f5 01 e8 1f 00 00 00 48 2b 05 58 a3 95 00 c3 0f 1f 80 00 00 00 00 f3 0f 1e fa eb 07 0f 00 2d 13 96 11 00 fb f4 <c3> 0f 1f 40 d6 48 83 ec 20 8b 17 49 89 f8 83 e2 fe 41 89 d2 0f 01
All code
========
   0:	48 8b 3d 94 e2 f5 01 	mov    0x1f5e294(%rip),%rdi        # 0x1f5e29b
   7:	e8 1f 00 00 00       	call   0x2b
   c:	48 2b 05 58 a3 95 00 	sub    0x95a358(%rip),%rax        # 0x95a36b
  13:	c3                   	ret
  14:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  1b:	f3 0f 1e fa          	endbr64
  1f:	eb 07                	jmp    0x28
  21:	0f 00 2d 13 96 11 00 	verw   0x119613(%rip)        # 0x11963b
  28:	fb                   	sti
  29:	f4                   	hlt
  2a:*	c3                   	ret		<-- trapping instruction
  2b:	0f 1f 40 d6          	nopl   -0x2a(%rax)
  2f:	48 83 ec 20          	sub    $0x20,%rsp
  33:	8b 17                	mov    (%rdi),%edx
  35:	49 89 f8             	mov    %rdi,%r8
  38:	83 e2 fe             	and    $0xfffffffe,%edx
  3b:	41 89 d2             	mov    %edx,%r10d
  3e:	0f                   	.byte 0xf
  3f:	01                   	.byte 0x1

Code starting with the faulting instruction
===========================================
   0:	c3                   	ret
   1:	0f 1f 40 d6          	nopl   -0x2a(%rax)
   5:	48 83 ec 20          	sub    $0x20,%rsp
   9:	8b 17                	mov    (%rdi),%edx
   b:	49 89 f8             	mov    %rdi,%r8
   e:	83 e2 fe             	and    $0xfffffffe,%edx
  11:	41 89 d2             	mov    %edx,%r10d
  14:	0f                   	.byte 0xf
  15:	01                   	.byte 0x1
[   28.021725][    C2] RSP: 0018:ffa0000000157e00 EFLAGS: 00000282
[   28.021729][    C2] RAX: 00000000000c7753 RBX: ff11000001bec6c0 RCX: ffffffff91ef0307
[   28.021730][    C2] RDX: ff11000001bec6c0 RSI: ffffffff94c38b01 RDI: ffffffff9468d8e0
[   28.021731][    C2] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
[   28.021732][    C2] R10: 0000000000000002 R11: 0000000000000001 R12: 1ff400000002afc3
[   28.021732][    C2] R13: 0000000000000000 R14: dffffc0000000000 R15: 0000000000000000
[   28.021734][    C2]  ? cpuidle_idle_call.constprop.0 (kernel/sched/idle.c:199)
[   28.021737][    C2]  default_idle (./arch/x86/include/asm/paravirt.h:62 arch/x86/kernel/process.c:768)
[   28.021739][    C2]  default_idle_call (kernel/sched/idle.c:122)
[   28.021740][    C2]  cpuidle_idle_call.constprop.0 (kernel/sched/idle.c:199)
[   28.021742][    C2]  ? arch_cpu_idle_exit+0x40/0x40
[   28.021743][    C2]  ? mark_tsc_async_resets (arch/x86/kernel/tsc_sync.c:49)
[   28.021746][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   28.021748][    C2]  do_idle (kernel/sched/idle.c:355)
[   28.021750][    C2]  cpu_startup_entry (kernel/sched/idle.c:454)
[   28.021751][    C2]  start_secondary (arch/x86/kernel/smpboot.c:312)
[   28.021753][    C2]  ? set_cpu_sibling_map (arch/x86/kernel/smpboot.c:733 (discriminator 4))
[   28.021755][    C2]  common_startup_64 (arch/x86/kernel/head_64.S:418)
| [   28.081803][    C2]
| [   28.081867][    C2]
| [   28.081867][    C2] stack backtrace:
| [   28.082035][    C2] Tainted: [W]=WARN
[   28.082036][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   28.082037][    C2] Call Trace:
[   28.082038][    C2]  <IRQ>
[   28.082039][    C2]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   28.082043][    C2]  print_irq_inversion_bug.part.0.cold (kernel/locking/lockdep.c:4141)
[   28.082046][    C2]  mark_lock_irq (kernel/locking/lockdep.c:4095 kernel/locking/lockdep.c:4174 kernel/locking/lockdep.c:4310)
[   28.082049][    C2]  mark_lock (kernel/locking/lockdep.c:4769)
[   28.082051][    C2]  mark_usage (kernel/locking/lockdep.c:4658)
[   28.082052][    C2]  __lock_acquire (kernel/locking/lockdep.c:5208)
[   28.082054][    C2]  lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   28.082056][    C2]  ? br_forward_delay_timer_expired (./include/linux/spinlock.h:347 net/bridge/br_stp_timer.c:88) bridge
[   28.082063][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   28.082066][    C2]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   28.082068][    C2]  ? br_message_age_timer_expired (net/bridge/br_stp_timer.c:54) bridge
[   28.082074][    C2]  _raw_spin_lock (./include/linux/spinlock_api_smp.h:190 (discriminator 1) kernel/locking/spinlock.c:173 (discriminator 1))
[   28.082075][    C2]  ? br_forward_delay_timer_expired (./include/linux/spinlock.h:347 net/bridge/br_stp_timer.c:88) bridge
[   28.082081][    C2] br_forward_delay_timer_expired (./include/linux/spinlock.h:347 net/bridge/br_stp_timer.c:88) bridge
[   28.082087][    C2]  ? br_message_age_timer_expired (net/bridge/br_stp_timer.c:54) bridge
[   28.082094][    C2]  call_timer_fn (kernel/time/timer.c:1748)
[   28.082096][    C2]  ? detach_if_pending (./include/linux/list.h:1159)
[   28.082097][    C2]  ? debug_object_active_state (lib/debugobjects.c:1122)
[   28.082101][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   28.082103][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   28.082104][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   28.082107][    C2]  __run_timers (kernel/time/timer.c:1799 kernel/time/timer.c:2374)
[   28.082108][    C2]  ? br_message_age_timer_expired (net/bridge/br_stp_timer.c:54) bridge
[   28.082116][    C2]  ? __bpf_trace_itimer_expire (./include/trace/events/timer.h:407)
[   28.082117][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   28.082120][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[   28.082123][    C2]  run_timer_softirq (kernel/time/timer.c:2386 kernel/time/timer.c:2395 kernel/time/timer.c:2403)
[   28.082125][    C2]  ? __run_timers (./include/trace/events/timer.h:138 (discriminator 19))
[   28.082126][    C2]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[   28.082128][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   28.082130][    C2]  handle_softirqs (kernel/softirq.c:645)
[   28.082132][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   28.082134][    C2]  ? _local_bh_enable (kernel/softirq.c:428 (discriminator 1))
[   28.082136][    C2]  __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767)
[   28.082137][    C2]  irq_exit_rcu (kernel/softirq.c:784)
[   28.082138][    C2]  sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1062 (discriminator 37) arch/x86/kernel/apic/apic.c:1062 (discriminator 37))
[   28.082140][    C2]  </IRQ>
[   28.082141][    C2]  <TASK>
[   28.082141][    C2]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4488)
[   28.082143][    C2]  asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:674)
[   28.082145][    C2] RIP: 0010:pv_native_safe_halt (./arch/x86/include/asm/irqflags.h:48 arch/x86/kernel/paravirt.c:63)
[   28.082147][    C2] Code: 48 8b 3d 94 e2 f5 01 e8 1f 00 00 00 48 2b 05 58 a3 95 00 c3 0f 1f 80 00 00 00 00 f3 0f 1e fa eb 07 0f 00 2d 13 96 11 00 fb f4 <c3> 0f 1f 40 d6 48 83 ec 20 8b 17 49 89 f8 83 e2 fe 41 89 d2 0f 01
All code
========
   0:	48 8b 3d 94 e2 f5 01 	mov    0x1f5e294(%rip),%rdi        # 0x1f5e29b
   7:	e8 1f 00 00 00       	call   0x2b
   c:	48 2b 05 58 a3 95 00 	sub    0x95a358(%rip),%rax        # 0x95a36b
  13:	c3                   	ret
  14:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  1b:	f3 0f 1e fa          	endbr64
  1f:	eb 07                	jmp    0x28
  21:	0f 00 2d 13 96 11 00 	verw   0x119613(%rip)        # 0x11963b
  28:	fb                   	sti
  29:	f4                   	hlt
  2a:*	c3                   	ret		<-- trapping instruction
  2b:	0f 1f 40 d6          	nopl   -0x2a(%rax)
  2f:	48 83 ec 20          	sub    $0x20,%rsp
  33:	8b 17                	mov    (%rdi),%edx
  35:	49 89 f8             	mov    %rdi,%r8
  38:	83 e2 fe             	and    $0xfffffffe,%edx
  3b:	41 89 d2             	mov    %edx,%r10d
  3e:	0f                   	.byte 0xf
  3f:	01                   	.byte 0x1

Code starting with the faulting instruction
===========================================
   0:	c3                   	ret
   1:	0f 1f 40 d6          	nopl   -0x2a(%rax)
   5:	48 83 ec 20          	sub    $0x20,%rsp
   9:	8b 17                	mov    (%rdi),%edx
   b:	49 89 f8             	mov    %rdi,%r8
   e:	83 e2 fe             	and    $0xfffffffe,%edx
  11:	41 89 d2             	mov    %edx,%r10d
  14:	0f                   	.byte 0xf
  15:	01                   	.byte 0x1
[   28.082148][    C2] RSP: 0018:ffa0000000157e00 EFLAGS: 00000282
[   28.082150][    C2] RAX: 00000000000c7753 RBX: ff11000001bec6c0 RCX: ffffffff91ef0307
[   28.082151][    C2] RDX: ff11000001bec6c0 RSI: ffffffff94c38b01 RDI: ffffffff9468d8e0
[   28.082152][    C2] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
[   28.082153][    C2] R10: 0000000000000002 R11: 0000000000000001 R12: 1ff400000002afc3
[   28.082153][    C2] R13: 0000000000000000 R14: dffffc0000000000 R15: 0000000000000000
[   28.082155][    C2]  ? cpuidle_idle_call.constprop.0 (kernel/sched/idle.c:199)
[   28.082157][    C2]  default_idle (./arch/x86/include/asm/paravirt.h:62 arch/x86/kernel/process.c:768)
[   28.082159][    C2]  default_idle_call (kernel/sched/idle.c:122)
[   28.082160][    C2]  cpuidle_idle_call.constprop.0 (kernel/sched/idle.c:199)
[   28.082162][    C2]  ? arch_cpu_idle_exit+0x40/0x40
[   28.082163][    C2]  ? mark_tsc_async_resets (arch/x86/kernel/tsc_sync.c:49)
[   28.082165][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   28.082167][    C2]  do_idle (kernel/sched/idle.c:355)
[   28.082169][    C2]  cpu_startup_entry (kernel/sched/idle.c:454)
[   28.082170][    C2]  start_secondary (arch/x86/kernel/smpboot.c:312)
[   28.082171][    C2]  ? set_cpu_sibling_map (arch/x86/kernel/smpboot.c:733 (discriminator 4))
[   28.082173][    C2]  common_startup_64 (arch/x86/kernel/head_64.S:418)
| [  390.921617][ T1969] softirqs last disabled at (0): 0x0
| [  390.921618][ T1969] Preemption disabled at:
| [  390.921619][ T1969] 0x0
| [  390.921627][ T1969] Tainted: [W]=WARN
[  390.921628][ T1969] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  390.921629][ T1969] Call Trace:
[  390.921631][ T1969]  <TASK>
[  390.921632][ T1969]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[  390.921638][ T1969]  __might_resched.cold (kernel/sched/core.c:9234)
[  390.921642][ T1969]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[  390.921645][ T1969]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[  390.921649][ T1969]  __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))
[  390.921653][ T1969]  ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[  390.921655][ T1969]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[  390.921659][ T1969]  ? 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)
[  390.921661][ T1969]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[  390.921663][ T1969]  put_chars (drivers/char/virtio_console.c:1176)
[  390.921664][ T1969]  ? __send_to_port (drivers/char/virtio_console.c:654)
[  390.921666][ T1969]  ? printk_get_next_message (kernel/printk/printk.c:3072)
[  390.921669][ T1969]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[  390.921673][ T1969]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[  390.921675][ T1969]  ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[  390.921676][ T1969]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[  390.921678][ T1969]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[  390.921680][ T1969]  console_emit_next_record (kernel/printk/printk.c:3183)
[  390.921683][ T1969]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[  390.921685][ T1969]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[  390.921686][ T1969]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[  390.921688][ T1969]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[  390.921689][ T1969]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[  390.921691][ T1969]  ? console_flush_one_record (kernel/printk/printk.c:3247)
[  390.921693][ T1969]  console_flush_one_record (kernel/printk/printk.c:3268)
[  390.921695][ T1969]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[  390.921698][ T1969]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[  390.921700][ T1969]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[  390.921701][ T1969]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[  390.921703][ T1969]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[  390.921704][ T1969]  ? lock_release (./include/trace/events/lock.h:68 (discriminator 22) kernel/locking/lockdep.c:5920 (discriminator 22))
[  390.921706][ T1969]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[  390.921707][ T1969]  ? __rcu_read_lock (kernel/rcu/tree_plugin.h:391 (discriminator 6) kernel/rcu/tree_plugin.h:414 (discriminator 6))
[  390.921709][ T1969]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[  390.921711][ T1969]  ? vprintk_emit (kernel/printk/printk.c:2478)
[  390.921713][ T1969]  vprintk_emit (kernel/printk/printk.c:2479)
[  390.921715][ T1969]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[  390.921717][ T1969]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[  390.921719][ T1969]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[  390.921721][ T1969]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:78)
[  390.921723][ T1969]  _printk (kernel/printk/printk.c:2504)
[  390.921726][ T1969]  ? snapshot_read.cold (user.c:?)
[  390.921728][ T1969]  ? ipv6_mc_down (net/ipv6/mcast.c:1137 net/ipv6/mcast.c:2792)
[  390.921733][ T1969] br_set_state (net/bridge/br_stp.c:57 (discriminator 2)) bridge
[  390.921746][ T1969] br_stp_disable_port (net/bridge/br_stp_if.c:106) bridge
[  390.921755][ T1969] br_device_event (net/bridge/br.c:111) bridge
[  390.921763][ T1969]  ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:211 (discriminator 1) kernel/locking/spinlock.c:221 (discriminator 1))
[  390.921766][ T1969]  ? _sub_I_65535_1+0x4d0/0x4d0 stp
[  390.921769][ T1969]  ? addrconf_notify (net/ipv6/addrconf.c:3812)
[  390.921772][ T1969]  notifier_call_chain (kernel/notifier.c:85)
[  390.921775][ T1969]  __dev_notify_flags (net/core/dev.c:2313 net/core/dev.c:2327 net/core/dev.c:9855)
[  390.921779][ T1969]  ? netif_change_name (net/core/dev.c:1517)
[  390.921781][ T1969]  ? netif_set_allmulti (./include/net/netdev_lock.h:30 (discriminator 1))
[  390.921783][ T1969]  ? __kernel_text_address (kernel/extable.c:79)
[  390.921785][ T1969]  ? write_profile (profile.c:?)
[  390.921787][ T1969]  ? unwind_get_return_address (arch/x86/kernel/unwind_orc.c:385 arch/x86/kernel/unwind_orc.c:380)
[  390.921790][ T1969]  netif_change_flags (net/core/dev.c:9882)
[  390.921792][ T1969]  do_setlink.isra.0 (net/core/rtnetlink.c:3266 (discriminator 1))
[  390.921795][ T1969]  ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1))
[  390.921796][ T1969]  ? rtnl_link_get_size (net/core/rtnetlink.c:747)
[  390.921797][ T1969]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[  390.921799][ T1969]  ? stack_depot_save_flags (lib/stackdepot.c:609 lib/stackdepot.c:676)
[  390.921803][ T1969]  ? kasan_save_stack (mm/kasan/common.c:58)
[  390.921806][ T1969]  ? kasan_save_stack (mm/kasan/common.c:57)
[  390.921807][ T1969]  ? kasan_save_track (mm/kasan/common.c:78)
[  390.921809][ T1969]  ? __kasan_kmalloc (mm/kasan/common.c:398 mm/kasan/common.c:415)
[  390.921810][ T1969]  ? __kmalloc_cache_noprof (./include/linux/kasan.h:263 mm/slub.c:5563)
[  390.921812][ T1969]  ? rtnl_newlink (./include/linux/slab.h:991 (discriminator 1) net/core/rtnetlink.c:4113 (discriminator 1))
[  390.921813][ T1969]  ? rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[  390.921814][ T1969]  ? netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[  390.921817][ T1969]  ? netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[  390.921818][ T1969]  ? netlink_sendmsg (net/netlink/af_netlink.c:1900)
[  390.921819][ T1969]  ? ____sys_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4) net/socket.c:2713 (discriminator 4))
[  390.921822][ T1969]  ? ___sys_sendmsg (net/socket.c:2767)
[  390.921823][ T1969]  ? __sys_sendmsg (net/socket.c:2799)
[  390.921825][ T1969]  ? do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[  390.921826][ T1969]  ? entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[  390.921829][ T1969]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[  390.921831][ T1969]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[  390.921832][ T1969]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[  390.921834][ T1969]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[  390.921835][ T1969]  ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22))
[  390.921838][ T1969]  ? __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)
[  390.921840][ T1969]  ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1))
[  390.921841][ T1969]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[  390.921842][ T1969]  ? ww_mutex_lock (kernel/locking/mutex.c:934)
[  390.921844][ T1969]  ? __rtnl_newlink (net/core/rtnetlink.c:4063)
[  390.921846][ T1969]  rtnl_newlink (net/core/rtnetlink.c:4215)
[  390.921848][ T1969]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[  390.921850][ T1969]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[  390.921851][ T1969]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[  390.921853][ T1969]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[  390.921855][ T1969]  ? is_bpf_text_address (./include/linux/rcupdate.h:850 kernel/bpf/core.c:749)
[  390.921858][ T1969]  ? is_bpf_text_address (./include/linux/rcupdate.h:882 kernel/bpf/core.c:751)
[  390.921860][ T1969]  ? kernel_text_address (kernel/extable.c:125 kernel/extable.c:94)
[  390.921861][ T1969]  ? __kernel_text_address (kernel/extable.c:79)
[  390.921862][ T1969]  ? write_profile (profile.c:?)
[  390.921863][ T1969]  ? unwind_get_return_address (arch/x86/kernel/unwind_orc.c:385 arch/x86/kernel/unwind_orc.c:380)
[  390.921865][ T1969]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[  390.921866][ T1969]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[  390.921868][ T1969]  ? cap_capable (./include/trace/events/capability.h:26 (discriminator 22) security/commoncap.c:130 (discriminator 22))
[  390.921871][ T1969]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[  390.921873][ T1969]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[  390.921874][ T1969]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[  390.921876][ T1969]  rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[  390.921877][ T1969]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[  390.921879][ T1969]  ? filter_irq_stacks (kernel/stacktrace.c:402)
[  390.921880][ T1969]  ? stack_depot_save_flags (lib/stackdepot.c:609 lib/stackdepot.c:676)
[  390.921882][ T1969]  netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[  390.921884][ T1969]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[  390.921885][ T1969]  ? lock_release (./include/trace/events/lock.h:68 (discriminator 22) kernel/locking/lockdep.c:5920 (discriminator 22))
[  390.921887][ T1969]  ? netlink_ack (./include/linux/skbuff.h:2718)
[  390.921888][ T1969]  ? __netlink_lookup (./include/linux/rcupdate.h:850 ./include/linux/rhashtable.h:709 net/netlink/af_netlink.c:499)
[  390.921890][ T1969]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[  390.921892][ T1969]  ? lock_release (./include/trace/events/lock.h:68 (discriminator 22) kernel/locking/lockdep.c:5920 (discriminator 22))
[  390.921894][ T1969]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[  390.921896][ T1969]  ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[  390.921898][ T1969]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[  390.921899][ T1969]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[  390.921901][ T1969]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[  390.921903][ T1969]  netlink_sendmsg (net/netlink/af_netlink.c:1900)
[  390.921905][ T1969]  ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7))
[  390.921907][ T1969]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[  390.921908][ T1969]  ? lock_release (./include/trace/events/lock.h:68 (discriminator 22) kernel/locking/lockdep.c:5920 (discriminator 22))
[  390.921910][ T1969]  ____sys_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4) net/socket.c:2713 (discriminator 4))
[  390.921912][ T1969]  ? copy_msghdr_from_user (net/socket.c:2650)
[  390.921913][ T1969]  ? get_timestamp.constprop.0 (./include/linux/netdevice.h:5399)
[  390.921915][ T1969]  ? move_addr_to_kernel (net/socket.c:258)
[  390.921916][ T1969]  ? filter_irq_stacks (kernel/stacktrace.c:402)
[  390.921919][ T1969]  ___sys_sendmsg (net/socket.c:2767)
[  390.921921][ T1969]  ? copy_msghdr_from_user (net/socket.c:2619)
[  390.921925][ T1969]  __sys_sendmsg (net/socket.c:2799)
[  390.921927][ T1969]  ? __sys_sendmsg_sock (net/socket.c:2780)
[  390.921930][ T1969]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[  390.921932][ T1969]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[  390.921933][ T1969]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[  390.921935][ T1969]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[  390.921937][ T1969] RIP: 0033:0x7fddb127354e
[  390.921939][ T1969] 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
[  390.921940][ T1969] RSP: 002b:00007ffd151e2910 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
[  390.921944][ T1969] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007fddb127354e
[  390.921945][ T1969] RDX: 0000000000000000 RSI: 00007ffd151e29c0 RDI: 0000000000000005
[  390.921946][ T1969] RBP: 00007ffd151e2920 R08: 0000000000000000 R09: 0000000000000000
[  390.921946][ T1969] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a9131e9


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