======================================
| [   10.618759][  T209] softirqs last disabled at (39073): __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767)
| [   10.618762][  T209] Preemption disabled at:
| [   10.618763][  T209] 0x0
| [   10.618777][  T209] Tainted: [W]=WARN
[   10.618778][  T209] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   10.618780][  T209] Call Trace:
[   10.618783][  T209]  <TASK>
[   10.618785][  T209]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   10.618793][  T209]  __might_resched.cold (kernel/sched/core.c:9234)
[   10.618799][  T209]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   10.618805][  T209]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   10.618813][  T209]  __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))
[   10.618817][  T209]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   10.618826][  T209]  ? 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)
[   10.618830][  T209]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   10.618835][  T209]  put_chars (drivers/char/virtio_console.c:1176)
[   10.618839][  T209]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   10.618841][  T209]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   10.618848][  T209]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   10.618857][  T209]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   10.618873][  T209]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   10.618876][  T209]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   10.618880][  T209]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   10.618887][  T209]  console_emit_next_record (kernel/printk/printk.c:3183)
[   10.618893][  T209]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   10.618896][  T209]  ? 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))
[   10.618901][  T209]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   10.618905][  T209]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   10.618912][  T209]  console_flush_one_record (kernel/printk/printk.c:3268)
[   10.618918][  T209]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   10.618921][  T209]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   10.618930][  T209]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   10.618934][  T209]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   10.618937][  T209]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   10.618940][  T209]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   10.618946][  T209]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   10.618949][  T209]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   10.618955][  T209]  vprintk_emit (kernel/printk/printk.c:2479)
[   10.618961][  T209]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   10.618967][  T209]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   10.618973][  T209]  _printk (kernel/printk/printk.c:2504)
[   10.618979][  T209]  ? snapshot_read.cold (user.c:?)
[   10.618983][  T209]  ? do_raw_spin_lock (./include/linux/instrumented.h:55 ./include/linux/atomic/atomic-instrumented.h:1301 ./include/asm-generic/qspinlock.h:112 kernel/locking/spinlock_debug.c:116)
[   10.618987][  T209]  ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[   10.618995][  T209]  ? do_raw_spin_lock (./include/linux/instrumented.h:55 ./include/linux/atomic/atomic-instrumented.h:1301 ./include/asm-generic/qspinlock.h:112 kernel/locking/spinlock_debug.c:116)
[   10.619000][  T209]  do_exit.cold (kernel/exit.c:889 (discriminator 4) kernel/exit.c:1043 (discriminator 4))
[   10.619005][  T209]  ? exit_notify (kernel/exit.c:780)
[   10.619008][  T209]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   10.619013][  T209]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   10.619020][  T209]  do_group_exit (kernel/exit.c:1151)
[   10.619025][  T209]  __x64_sys_exit_group (kernel/exit.c:1162 kernel/exit.c:1160 kernel/exit.c:1160)
[   10.619028][  T209]  x64_sys_call (./arch/x86/include/generated/asm/syscalls_64.h:232)
[   10.619031][  T209]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   10.619035][  T209]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   10.619040][  T209]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   10.619044][  T209] RIP: 0033:0x7f2ec281d1b8
[   10.619047][  T209] Code: Unable to access opcode bytes at 0x7f2ec281d18e.

Code starting with the faulting instruction
===========================================
[   10.619048][  T209] RSP: 002b:00007ffc2f368528 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
[   10.619052][  T209] RAX: ffffffffffffffda RBX: 00007f2ec294df88 RCX: 00007f2ec281d1b8
[   10.619053][  T209] RDX: 00007f2ec2567fc8 RSI: fffffffffffffeb8 RDI: 0000000000000000
[   10.619055][  T209] RBP: 00007ffc2f368580 R08: 0000000000000000 R09: 0000000000008010
[   10.619056][  T209] R10: 00007ffc2f368340 R11: 0000000000000246 R12: 0000000000000001
[   10.619058][  T209] R13: 0000000000000000 R14: 00007f2ec294c680 R15: 00007f2ec294dfa0
| [   12.959556][  T280] softirqs last disabled at (23541): __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767)
| [   12.959558][  T280] Preemption disabled at:
| [   12.959559][  T280] vprintk_emit (kernel/printk/printk.c:2471)
| [   12.959568][  T280] Tainted: [W]=WARN
[   12.959569][  T280] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   12.959571][  T280] Call Trace:
[   12.959572][  T280]  <TASK>
[   12.959574][  T280]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   12.959580][  T280]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   12.959582][  T280]  __might_resched.cold (kernel/sched/core.c:9234)
[   12.959587][  T280]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   12.959591][  T280]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   12.959596][  T280]  __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))
[   12.959598][  T280]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   12.959604][  T280]  ? 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)
[   12.959607][  T280]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   12.959610][  T280]  put_chars (drivers/char/virtio_console.c:1176)
[   12.959612][  T280]  ? desc_read_finalized_seq (kernel/printk/printk_ringbuffer.c:1934)
[   12.959614][  T280]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   12.959617][  T280]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   12.959621][  T280]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   12.959625][  T280]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   12.959627][  T280]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   12.959629][  T280]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   12.959633][  T280]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   12.959635][  T280]  ? console_emit_next_record (kernel/printk/printk.c:3095 (discriminator 2) kernel/printk/printk.c:3182 (discriminator 2))
[   12.959638][  T280]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   12.959641][  T280]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   12.959645][  T280]  console_emit_next_record (kernel/printk/printk.c:3183)
[   12.959648][  T280]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   12.959650][  T280]  ? 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))
[   12.959653][  T280]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   12.959655][  T280]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   12.959659][  T280]  console_flush_one_record (kernel/printk/printk.c:3268)
[   12.959664][  T280]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   12.959665][  T280]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   12.959670][  T280]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   12.959673][  T280]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   12.959675][  T280]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   12.959677][  T280]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   12.959681][  T280]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   12.959683][  T280]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   12.959686][  T280]  vprintk_emit (kernel/printk/printk.c:2479)
[   12.959690][  T280]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   12.959695][  T280]  ? gre_exit (net/ipv4/gre_demux.c:73) gre
[   12.959699][  T280]  _printk (kernel/printk/printk.c:2504)
[   12.959702][  T280]  ? snapshot_read.cold (user.c:?)
[   12.959709][  T280]  ? 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)
[   12.959712][  T280] gre_init (gre.mod.c:?) gre
[   12.959714][  T280]  do_one_initcall (init/main.c:1357)
[   12.959716][  T280]  ? trace_event_raw_event_initcall_level (./include/trace/events/initcall.h:10)
[   12.959721][  T280]  ? do_init_module (./include/linux/slab.h:991 (discriminator 1) kernel/module/main.c:3105 (discriminator 1))
[   12.959724][  T280]  ? kasan_unpoison (mm/kasan/shadow.c:146 mm/kasan/shadow.c:178)
[   12.959729][  T280]  do_init_module (kernel/module/main.c:3117)
[   12.959732][  T280]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4488)
[   12.959737][  T280]  ? free_module (./include/trace/events/module.h:50 (discriminator 19))
[   12.959740][  T280]  ? kfree (./include/linux/kasan.h:235 mm/slub.c:2748 mm/slub.c:6499 mm/slub.c:6792)
[   12.959744][  T280]  load_module (kernel/module/main.c:3593)
[   12.959751][  T280]  ? layout_and_allocate.isra.0 (kernel/module/main.c:3016)
[   12.959756][  T280]  ? backing_file_read_iter (fs/backing-file.c:211)
[   12.959760][  T280]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   12.959764][  T280]  init_module_from_file (kernel/module/main.c:3790)
[   12.959767][  T280]  ? __do_sys_init_module (kernel/module/main.c:3664)
[   12.959775][  T280]  ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[   12.959779][  T280]  ? 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)
[   12.959782][  T280]  idempotent_init_module (kernel/module/main.c:3802)
[   12.959785][  T280]  ? init_module_from_file (kernel/module/main.c:3791)
[   12.959791][  T280]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   12.959794][  T280]  ? cap_capable (./include/trace/events/capability.h:26 (discriminator 22) security/commoncap.c:130 (discriminator 22))
[   12.959800][  T280]  __x64_sys_finit_module (kernel/module/main.c:3828 kernel/module/main.c:3812 kernel/module/main.c:3812)
[   12.959802][  T280]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[   12.959805][  T280]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   12.959807][  T280]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   12.959810][  T280]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   12.959812][  T280] RIP: 0033:0x7f38fab9e37d
[   12.959816][  T280] 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
[   12.959817][  T280] RSP: 002b:00007fffd3727ba8 EFLAGS: 00000246 ORIG_RAX: 0000000000000139
[   12.959820][  T280] RAX: ffffffffffffffda RBX: 00005632176e6a40 RCX: 00007f38fab9e37d
[   12.959821][  T280] RDX: 0000000000000000 RSI: 00005631e4397ffd RDI: 0000000000000001
[   12.959822][  T280] RBP: 00007fffd3727c40 R08: 0000000000000000 R09: 0000000000000000
[   12.959823][  T280] R10: 0000000000000000 R11: 0000000000000246 R12: 00005631e4397ffd
[   12.959824][  T280] R13: 00005632176e6a00 R14: 0000000000040000 R15: 0000000000000000
| [   14.103540][  T320] softirqs last disabled at (16171): __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767)
| [   14.103543][  T320] Preemption disabled at:
| [   14.103543][  T320] vprintk_emit (kernel/printk/printk.c:2471)
| [   14.103552][  T320] Tainted: [W]=WARN
[   14.103553][  T320] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   14.103554][  T320] Call Trace:
[   14.103556][  T320]  <TASK>
[   14.103557][  T320]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   14.103563][  T320]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   14.103566][  T320]  __might_resched.cold (kernel/sched/core.c:9234)
[   14.103570][  T320]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   14.103574][  T320]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   14.103579][  T320]  __kmalloc_noprof (./include/linux/sched/mm.h:322 (discriminator 2) mm/slub.c:4636 (discriminator 2) mm/slub.c:4974 (discriminator 2) mm/slub.c:5413 (discriminator 2) mm/slub.c:5439 (discriminator 2))
[   14.103581][  T320]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   14.103587][  T320]  ? do_raw_spin_unlock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:32 ./include/asm-generic/qspinlock.h:58 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141)
[   14.103589][  T320]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   14.103593][  T320]  put_chars (drivers/char/virtio_console.c:1176)
[   14.103595][  T320]  ? desc_read_finalized_seq (kernel/printk/printk_ringbuffer.c:1934)
[   14.103597][  T320]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   14.103599][  T320]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   14.103603][  T320]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   14.103607][  T320]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   14.103610][  T320]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   14.103612][  T320]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   14.103616][  T320]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   14.103617][  T320]  ? console_emit_next_record (kernel/printk/printk.c:3095 (discriminator 2) kernel/printk/printk.c:3182 (discriminator 2))
[   14.103621][  T320]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   14.103623][  T320]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   14.103627][  T320]  console_emit_next_record (kernel/printk/printk.c:3183)
[   14.103631][  T320]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   14.103633][  T320]  ? console_flush_one_record (./include/linux/rcupdate.h:314 (discriminator 2) ./include/linux/srcu.h:439 (discriminator 2) kernel/printk/printk.c:291 (discriminator 2) kernel/printk/printk.c:3246 (discriminator 2))
[   14.103636][  T320]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   14.103638][  T320]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   14.103642][  T320]  console_flush_one_record (kernel/printk/printk.c:3268)
[   14.103646][  T320]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   14.103647][  T320]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   14.103652][  T320]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   14.103655][  T320]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   14.103657][  T320]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   14.103659][  T320]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   14.103663][  T320]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   14.103664][  T320]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   14.103667][  T320]  vprintk_emit (kernel/printk/printk.c:2479)
[   14.103672][  T320]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   14.103678][  T320]  ? llc_exit (./arch/x86/include/asm/atomic.h:28 ./include/linux/atomic/atomic-arch-fallback.h:503 ./include/linux/atomic/atomic-instrumented.h:68 ./include/linux/refcount.h:134 net/llc/llc_core.c:38 net/llc/llc_core.c:96) llc
[   14.103681][  T320]  _printk (kernel/printk/printk.c:2504)
[   14.103685][  T320]  ? snapshot_read.cold (user.c:?)
[   14.103691][  T320]  ? 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)
[   14.103695][  T320] gact_init_module (net/sched/act_gact.c:180) act_gact
[   14.103698][  T320]  do_one_initcall (init/main.c:1357)
[   14.103700][  T320]  ? trace_event_raw_event_initcall_level (./include/trace/events/initcall.h:10)
[   14.103705][  T320]  ? do_init_module (./include/linux/slab.h:991 (discriminator 1) kernel/module/main.c:3105 (discriminator 1))
[   14.103708][  T320]  ? kasan_unpoison (mm/kasan/shadow.c:146 mm/kasan/shadow.c:178)
[   14.103713][  T320]  do_init_module (kernel/module/main.c:3117)
[   14.103716][  T320]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4488)
[   14.103721][  T320]  ? free_module (./include/trace/events/module.h:50 (discriminator 19))
[   14.103724][  T320]  ? kfree (./include/linux/kasan.h:235 mm/slub.c:2748 mm/slub.c:6499 mm/slub.c:6792)
[   14.103728][  T320]  load_module (kernel/module/main.c:3593)
[   14.103735][  T320]  ? layout_and_allocate.isra.0 (kernel/module/main.c:3016)
[   14.103739][  T320]  ? __ia32_sys_fsconfig (??:?)
[   14.103741][  T320]  ? ovl_real_file (fs/overlayfs/file.c:195)
[   14.103746][  T320]  ? backing_file_read_iter (fs/backing-file.c:211)
[   14.103749][  T320]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   14.103752][  T320]  init_module_from_file (kernel/module/main.c:3790)
[   14.103756][  T320]  ? __do_sys_init_module (kernel/module/main.c:3664)
[   14.103764][  T320]  ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[   14.103767][  T320]  ? do_raw_spin_unlock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:32 ./include/asm-generic/qspinlock.h:58 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141)
[   14.103770][  T320]  idempotent_init_module (kernel/module/main.c:3802)
[   14.103773][  T320]  ? init_module_from_file (kernel/module/main.c:3791)
[   14.103779][  T320]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   14.103782][  T320]  ? cap_capable (./include/trace/events/capability.h:26 (discriminator 22) security/commoncap.c:130 (discriminator 22))
[   14.103787][  T320]  __x64_sys_finit_module (kernel/module/main.c:3828 kernel/module/main.c:3812 kernel/module/main.c:3812)
[   14.103790][  T320]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[   14.103793][  T320]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   14.103795][  T320]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   14.103798][  T320]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   14.103800][  T320] RIP: 0033:0x7efcf537537d
[   14.103804][  T320] 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
[   14.103806][  T320] RSP: 002b:00007ffd9248c6c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000139
[   14.103808][  T320] RAX: ffffffffffffffda RBX: 0000563f10401810 RCX: 00007efcf537537d
[   14.103810][  T320] RDX: 0000000000000000 RSI: 0000563ed4d50ffd RDI: 0000000000000000
[   14.103811][  T320] RBP: 00007ffd9248c760 R08: 0000000000000000 R09: 0000000000000000
[   14.103812][  T320] R10: 0000000000000000 R11: 0000000000000246 R12: 0000563ed4d50ffd
[   14.103812][  T320] R13: 0000563f10401960 R14: 0000000000040000 R15: 0000000000000000
| [   19.685932][  T354] softirqs last disabled at (15857): __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767)
| [   19.685934][  T354] Preemption disabled at:
| [   19.685934][  T354] vprintk_emit (kernel/printk/printk.c:2471)
| [   19.685943][  T354] Tainted: [W]=WARN
[   19.685944][  T354] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   19.685946][  T354] Call Trace:
[   19.685948][  T354]  <TASK>
[   19.685949][  T354]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   19.685955][  T354]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   19.685957][  T354]  __might_resched.cold (kernel/sched/core.c:9234)
[   19.685962][  T354]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   19.685966][  T354]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   19.685971][  T354]  __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))
[   19.685974][  T354]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   19.685980][  T354]  ? 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)
[   19.685983][  T354]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   19.685986][  T354]  put_chars (drivers/char/virtio_console.c:1176)
[   19.685988][  T354]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   19.685990][  T354]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   19.685995][  T354]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   19.685997][  T354]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   19.686003][  T354]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   19.686005][  T354]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   19.686010][  T354]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   19.686013][  T354]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   19.686018][  T354]  console_emit_next_record (kernel/printk/printk.c:3183)
[   19.686022][  T354]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   19.686024][  T354]  ? 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))
[   19.686027][  T354]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   19.686029][  T354]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   19.686033][  T354]  console_flush_one_record (kernel/printk/printk.c:3268)
[   19.686037][  T354]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   19.686039][  T354]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   19.686044][  T354]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   19.686047][  T354]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   19.686049][  T354]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   19.686051][  T354]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   19.686055][  T354]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   19.686057][  T354]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   19.686060][  T354]  vprintk_emit (kernel/printk/printk.c:2479)
[   19.686064][  T354]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   19.686067][  T354]  ? netdev_run_todo (net/core/dev.c:11776)
[   19.686071][  T354]  ? mirred_device_event (net/sched/act_mirred.c:559 (discriminator 1)) act_mirred
[   19.686075][  T354]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   19.686079][  T354]  ? llc_exit (./arch/x86/include/asm/atomic.h:28 ./include/linux/atomic/atomic-arch-fallback.h:503 ./include/linux/atomic/atomic-instrumented.h:68 ./include/linux/refcount.h:134 net/llc/llc_core.c:38 net/llc/llc_core.c:96) llc
[   19.686082][  T354]  _printk (kernel/printk/printk.c:2504)
[   19.686086][  T354]  ? snapshot_read.cold (user.c:?)
[   19.686088][  T354]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   19.686090][  T354]  ? llc_exit (./arch/x86/include/asm/atomic.h:28 ./include/linux/atomic/atomic-arch-fallback.h:503 ./include/linux/atomic/atomic-instrumented.h:68 ./include/linux/refcount.h:134 net/llc/llc_core.c:38 net/llc/llc_core.c:96) llc
[   19.686092][  T354]  ? __up_write (kernel/locking/rwsem.c:1415)
[   19.686094][  T354]  ? __up_write (kernel/locking/rwsem.c:1422 (discriminator 1))
[   19.686097][  T354]  ? __up_write (./include/linux/instrumented.h:112 ./include/linux/atomic/atomic-instrumented.h:3390 kernel/locking/rwsem.c:1417)
[   19.686099][  T354] mirred_init_module (net/sched/act_mirred.c:508) act_mirred
[   19.686103][  T354]  do_one_initcall (init/main.c:1357)
[   19.686106][  T354]  ? trace_event_raw_event_initcall_level (./include/trace/events/initcall.h:10)
[   19.686110][  T354]  ? do_init_module (./include/linux/slab.h:991 (discriminator 1) kernel/module/main.c:3105 (discriminator 1))
[   19.686113][  T354]  ? kasan_unpoison (mm/kasan/shadow.c:146 mm/kasan/shadow.c:178)
[   19.686118][  T354]  do_init_module (kernel/module/main.c:3117)
[   19.686122][  T354]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4488)
[   19.686126][  T354]  ? free_module (./include/trace/events/module.h:50 (discriminator 19))
[   19.686129][  T354]  ? kfree (./include/linux/kasan.h:235 mm/slub.c:2748 mm/slub.c:6499 mm/slub.c:6792)
[   19.686133][  T354]  load_module (kernel/module/main.c:3593)
[   19.686140][  T354]  ? layout_and_allocate.isra.0 (kernel/module/main.c:3016)
[   19.686144][  T354]  ? __ia32_sys_fsconfig (??:?)
[   19.686146][  T354]  ? ovl_real_file (fs/overlayfs/file.c:195)
[   19.686150][  T354]  ? backing_file_read_iter (fs/backing-file.c:211)
[   19.686153][  T354]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   19.686157][  T354]  init_module_from_file (kernel/module/main.c:3790)
[   19.686160][  T354]  ? __do_sys_init_module (kernel/module/main.c:3664)
[   19.686168][  T354]  ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[   19.686172][  T354]  ? 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)
[   19.686175][  T354]  idempotent_init_module (kernel/module/main.c:3802)
[   19.686178][  T354]  ? init_module_from_file (kernel/module/main.c:3791)
[   19.686184][  T354]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   19.686187][  T354]  ? cap_capable (./include/trace/events/capability.h:26 (discriminator 22) security/commoncap.c:130 (discriminator 22))
[   19.686192][  T354]  __x64_sys_finit_module (kernel/module/main.c:3828 kernel/module/main.c:3812 kernel/module/main.c:3812)
[   19.686195][  T354]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[   19.686198][  T354]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   19.686200][  T354]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   19.686203][  T354]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   19.686211][  T354] RIP: 0033:0x7f646a5e537d
[   19.686215][  T354] 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
[   19.686216][  T354] RSP: 002b:00007ffc747d1228 EFLAGS: 00000246 ORIG_RAX: 0000000000000139
[   19.686219][  T354] RAX: ffffffffffffffda RBX: 000056258fd96810 RCX: 00007f646a5e537d
[   19.686220][  T354] RDX: 0000000000000000 RSI: 0000562585f1affd RDI: 0000000000000000
[   19.686221][  T354] RBP: 00007ffc747d12c0 R08: 0000000000000000 R09: 0000000000000000
[   19.686222][  T354] R10: 0000000000000000 R11: 0000000000000246 R12: 0000562585f1affd
[   19.686223][  T354] R13: 000056258fd96960 R14: 0000000000040000 R15: 0000000000000000
| [   29.037991][    C0] softirqs last disabled at (706175): __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767)
| [   29.037993][    C0] Preemption disabled at:
| [   29.037994][    C0] schedule_preempt_disabled (kernel/sched/core.c:7420)
| [   29.038004][    C0] Tainted: [W]=WARN
[   29.038005][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   29.038007][    C0] Call Trace:
[   29.038008][    C0]  <IRQ>
[   29.038010][    C0]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   29.038015][    C0]  ? schedule_preempt_disabled (kernel/sched/core.c:7420)
[   29.038017][    C0]  __might_resched.cold (kernel/sched/core.c:9234)
[   29.038021][    C0]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   29.038024][    C0]  ? __asan_memcpy (mm/kasan/shadow.c:106 (discriminator 1))
[   29.038027][    C0]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   29.038030][    C0]  __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))
[   29.038033][    C0]  ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[   29.038036][    C0]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   29.038040][    C0]  ? 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)
[   29.038041][    C0]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   29.038043][    C0]  put_chars (drivers/char/virtio_console.c:1176)
[   29.038045][    C0]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   29.038047][    C0]  ? console_prepend_replay (kernel/printk/printk.c:3005)
[   29.038050][    C0]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   29.038054][    C0]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   29.038055][    C0]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   29.038057][    C0]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   29.038059][    C0]  console_emit_next_record (kernel/printk/printk.c:3183)
[   29.038061][    C0]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   29.038063][    C0]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   29.038065][    C0]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   29.038066][    C0]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   29.038068][    C0]  ? console_flush_one_record (kernel/printk/printk.c:3247)
[   29.038070][    C0]  console_flush_one_record (kernel/printk/printk.c:3268)
[   29.038072][    C0]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   29.038075][    C0]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   29.038076][    C0]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   29.038078][    C0]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   29.038079][    C0]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   29.038081][    C0]  ? lock_release (./include/trace/events/lock.h:68 (discriminator 22) kernel/locking/lockdep.c:5920 (discriminator 22))
[   29.038082][    C0]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   29.038084][    C0]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   29.038086][    C0]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   29.038088][    C0]  vprintk_emit (kernel/printk/printk.c:2479)
[   29.038091][    C0]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   29.038092][    C0]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   29.038094][    C0]  ? lock_release (./include/trace/events/lock.h:68 (discriminator 22) kernel/locking/lockdep.c:5920 (discriminator 22))
[   29.038095][    C0]  ? x86_64_start_kernel (arch/x86/kernel/head64.c:264)
[   29.038100][    C0]  _printk (kernel/printk/printk.c:2504)
[   29.038103][    C0]  ? snapshot_read.cold (user.c:?)
[   29.038105][    C0]  ? arch_stack_walk (arch/x86/kernel/stacktrace.c:25)
[   29.038109][    C0]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   29.038111][    C0]  ? nbcon_cpu_emergency_enter (./include/linux/instrumented.h:112 ./include/linux/atomic/atomic-instrumented.h:435 kernel/printk/nbcon.c:1723)
[   29.038112][    C0]  print_irq_inversion_bug.part.0 (kernel/locking/lockdep.c:4097 (discriminator 1))
[   29.038115][    C0]  mark_lock_irq (kernel/locking/lockdep.c:4095 kernel/locking/lockdep.c:4174 kernel/locking/lockdep.c:4310)
[   29.038118][    C0]  mark_lock (kernel/locking/lockdep.c:4769)
[   29.038120][    C0]  mark_usage (kernel/locking/lockdep.c:4658)
[   29.038121][    C0]  __lock_acquire (kernel/locking/lockdep.c:5208)
[   29.038123][    C0]  lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   29.038125][    C0]  ? br_forward_delay_timer_expired (./include/linux/spinlock.h:347 net/bridge/br_stp_timer.c:88) bridge
[   29.038137][    C0]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   29.038139][    C0]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   29.038141][    C0]  ? br_message_age_timer_expired (net/bridge/br_stp_timer.c:54) bridge
[   29.038147][    C0]  _raw_spin_lock (./include/linux/spinlock_api_smp.h:190 (discriminator 1) kernel/locking/spinlock.c:173 (discriminator 1))
[   29.038149][    C0]  ? br_forward_delay_timer_expired (./include/linux/spinlock.h:347 net/bridge/br_stp_timer.c:88) bridge
[   29.038155][    C0] br_forward_delay_timer_expired (./include/linux/spinlock.h:347 net/bridge/br_stp_timer.c:88) bridge
[   29.038162][    C0]  ? br_message_age_timer_expired (net/bridge/br_stp_timer.c:54) bridge
[   29.038168][    C0]  call_timer_fn (kernel/time/timer.c:1748)
[   29.038171][    C0]  ? detach_if_pending (./include/linux/list.h:1159)
[   29.038173][    C0]  ? debug_object_active_state (lib/debugobjects.c:1122)
[   29.038176][    C0]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   29.038178][    C0]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   29.038180][    C0]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   29.038182][    C0]  __run_timers (kernel/time/timer.c:1799 kernel/time/timer.c:2374)
[   29.038184][    C0]  ? br_message_age_timer_expired (net/bridge/br_stp_timer.c:54) bridge
[   29.038191][    C0]  ? __bpf_trace_itimer_expire (./include/trace/events/timer.h:407)
[   29.038192][    C0]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   29.038195][    C0]  ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[   29.038197][    C0]  run_timer_softirq (kernel/time/timer.c:2386 kernel/time/timer.c:2395 kernel/time/timer.c:2403)
[   29.038199][    C0]  ? __run_timers (./include/trace/events/timer.h:138 (discriminator 19))
[   29.038201][    C0]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[   29.038203][    C0]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   29.038205][    C0]  handle_softirqs (kernel/softirq.c:645)
[   29.038207][    C0]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   29.038208][    C0]  ? _local_bh_enable (kernel/softirq.c:428 (discriminator 1))
[   29.038210][    C0]  __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767)
[   29.038212][    C0]  irq_exit_rcu (kernel/softirq.c:784)
[   29.038213][    C0]  sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1062 (discriminator 37) arch/x86/kernel/apic/apic.c:1062 (discriminator 37))
[   29.038216][    C0]  </IRQ>
[   29.038217][    C0]  <TASK>
[   29.038217][    C0]  ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:470 (discriminator 2) kernel/locking/lockdep.c:4427 (discriminator 2))
[   29.038219][    C0]  asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:674)
[   29.038222][    C0] RIP: 0010:pv_native_safe_halt (./arch/x86/include/asm/irqflags.h:48 arch/x86/kernel/paravirt.c:63)
[   29.038224][    C0] Code: 48 8b 3d 94 f2 f5 01 e8 1f 00 00 00 48 2b 05 58 b3 95 00 c3 0f 1f 80 00 00 00 00 f3 0f 1e fa eb 07 0f 00 2d 13 a6 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 f2 f5 01 	mov    0x1f5f294(%rip),%rdi        # 0x1f5f29b
   7:	e8 1f 00 00 00       	call   0x2b
   c:	48 2b 05 58 b3 95 00 	sub    0x95b358(%rip),%rax        # 0x95b36b
  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 a6 11 00 	verw   0x11a613(%rip)        # 0x11a63b
  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
[   29.038226][    C0] RSP: 0018:ffffffffb8a07cf8 EFLAGS: 00000296
[   29.038229][    C0] RAX: 00000000000ac67d RBX: ffffffffb8a1c600 RCX: ffffffffb5af0307
[   29.038231][    C0] RDX: ffffffffb8a1c600 RSI: ffffffffb8838b1c RDI: ffffffffb828d8e0
[   29.038232][    C0] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
[   29.038233][    C0] R10: 0000000000000000 R11: 0000000000000001 R12: 1ffffffff7140fa2
[   29.038233][    C0] R13: 0000000000000000 R14: dffffc0000000000 R15: 0000000000014770
[   29.038235][    C0]  ? cpuidle_idle_call.constprop.0 (kernel/sched/idle.c:199)
[   29.038238][    C0]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4488)
[   29.038239][    C0]  default_idle (./arch/x86/include/asm/paravirt.h:62 arch/x86/kernel/process.c:768)
[   29.038241][    C0]  default_idle_call (kernel/sched/idle.c:122)
[   29.038243][    C0]  cpuidle_idle_call.constprop.0 (kernel/sched/idle.c:199)
[   29.038244][    C0]  ? arch_cpu_idle_exit+0x40/0x40
[   29.038246][    C0]  ? mark_tsc_async_resets (arch/x86/kernel/tsc_sync.c:49)
[   29.038248][    C0]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[   29.038249][    C0]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   29.038251][    C0]  do_idle (kernel/sched/idle.c:355)
[   29.038253][    C0]  cpu_startup_entry (kernel/sched/idle.c:454)
[   29.038254][    C0]  rest_init (init/main.c:727)
[   29.038256][    C0]  ? __cpuidle_text_end (??:?)
[   29.038259][    C0]  ? rest_init (init/main.c:727)
[   29.038261][    C0]  ? acpi_hw_set_mode (drivers/acpi/acpica/hwacpi.c:72 (discriminator 1))
[   29.038264][    C0]  ? cpus_read_unlock (./include/linux/percpu-rwsem.h:125 (discriminator 1) kernel/cpu.c:502 (discriminator 1))
[   29.038267][    C0]  ? acpi_enable (drivers/acpi/acpica/evxfevnt.c:47)
[   29.038269][    C0]  start_kernel (init/main.c:1185)
[   29.038271][    C0]  x86_64_start_reservations (arch/x86/kernel/head64.c:310)
[   29.038273][    C0]  x86_64_start_kernel (arch/x86/kernel/head64.c:291)
[   29.038275][    C0]  common_startup_64 (arch/x86/kernel/head_64.S:418)
| [   29.104665][    C0]
| [   29.104790][    C0]
| [   29.104790][    C0] stack backtrace:
| [   29.104981][    C0] Tainted: [W]=WARN
[   29.104982][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   29.104983][    C0] Call Trace:
[   29.104984][    C0]  <IRQ>
[   29.104985][    C0]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   29.104990][    C0]  print_irq_inversion_bug.part.0.cold (kernel/locking/lockdep.c:4141)
[   29.104993][    C0]  mark_lock_irq (kernel/locking/lockdep.c:4095 kernel/locking/lockdep.c:4174 kernel/locking/lockdep.c:4310)
[   29.104996][    C0]  mark_lock (kernel/locking/lockdep.c:4769)
[   29.104998][    C0]  mark_usage (kernel/locking/lockdep.c:4658)
[   29.105000][    C0]  __lock_acquire (kernel/locking/lockdep.c:5208)
[   29.105002][    C0]  lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   29.105004][    C0]  ? br_forward_delay_timer_expired (./include/linux/spinlock.h:347 net/bridge/br_stp_timer.c:88) bridge
[   29.105011][    C0]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   29.105014][    C0]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   29.105016][    C0]  ? br_message_age_timer_expired (net/bridge/br_stp_timer.c:54) bridge
[   29.105022][    C0]  _raw_spin_lock (./include/linux/spinlock_api_smp.h:190 (discriminator 1) kernel/locking/spinlock.c:173 (discriminator 1))
[   29.105024][    C0]  ? br_forward_delay_timer_expired (./include/linux/spinlock.h:347 net/bridge/br_stp_timer.c:88) bridge
[   29.105030][    C0] br_forward_delay_timer_expired (./include/linux/spinlock.h:347 net/bridge/br_stp_timer.c:88) bridge
[   29.105036][    C0]  ? br_message_age_timer_expired (net/bridge/br_stp_timer.c:54) bridge
[   29.105042][    C0]  call_timer_fn (kernel/time/timer.c:1748)
[   29.105045][    C0]  ? detach_if_pending (./include/linux/list.h:1159)
[   29.105046][    C0]  ? debug_object_active_state (lib/debugobjects.c:1122)
[   29.105050][    C0]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   29.105052][    C0]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   29.105054][    C0]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   29.105056][    C0]  __run_timers (kernel/time/timer.c:1799 kernel/time/timer.c:2374)
[   29.105058][    C0]  ? br_message_age_timer_expired (net/bridge/br_stp_timer.c:54) bridge
[   29.105065][    C0]  ? __bpf_trace_itimer_expire (./include/trace/events/timer.h:407)
[   29.105066][    C0]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   29.105069][    C0]  ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[   29.105072][    C0]  run_timer_softirq (kernel/time/timer.c:2386 kernel/time/timer.c:2395 kernel/time/timer.c:2403)
[   29.105073][    C0]  ? __run_timers (./include/trace/events/timer.h:138 (discriminator 19))
[   29.105075][    C0]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[   29.105078][    C0]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   29.105079][    C0]  handle_softirqs (kernel/softirq.c:645)
[   29.105081][    C0]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   29.105083][    C0]  ? _local_bh_enable (kernel/softirq.c:428 (discriminator 1))
[   29.105085][    C0]  __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767)
[   29.105086][    C0]  irq_exit_rcu (kernel/softirq.c:784)
[   29.105088][    C0]  sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1062 (discriminator 37) arch/x86/kernel/apic/apic.c:1062 (discriminator 37))
[   29.105089][    C0]  </IRQ>
[   29.105090][    C0]  <TASK>
[   29.105091][    C0]  ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:470 (discriminator 2) kernel/locking/lockdep.c:4427 (discriminator 2))
[   29.105092][    C0]  asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:674)
[   29.105094][    C0] RIP: 0010:pv_native_safe_halt (./arch/x86/include/asm/irqflags.h:48 arch/x86/kernel/paravirt.c:63)
[   29.105096][    C0] Code: 48 8b 3d 94 f2 f5 01 e8 1f 00 00 00 48 2b 05 58 b3 95 00 c3 0f 1f 80 00 00 00 00 f3 0f 1e fa eb 07 0f 00 2d 13 a6 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 f2 f5 01 	mov    0x1f5f294(%rip),%rdi        # 0x1f5f29b
   7:	e8 1f 00 00 00       	call   0x2b
   c:	48 2b 05 58 b3 95 00 	sub    0x95b358(%rip),%rax        # 0x95b36b
  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 a6 11 00 	verw   0x11a613(%rip)        # 0x11a63b
  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
[   29.105098][    C0] RSP: 0018:ffffffffb8a07cf8 EFLAGS: 00000296
[   29.105100][    C0] RAX: 00000000000ac67d RBX: ffffffffb8a1c600 RCX: ffffffffb5af0307
[   29.105101][    C0] RDX: ffffffffb8a1c600 RSI: ffffffffb8838b1c RDI: ffffffffb828d8e0
[   29.105102][    C0] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
[   29.105103][    C0] R10: 0000000000000000 R11: 0000000000000001 R12: 1ffffffff7140fa2
[   29.105104][    C0] R13: 0000000000000000 R14: dffffc0000000000 R15: 0000000000014770
[   29.105106][    C0]  ? cpuidle_idle_call.constprop.0 (kernel/sched/idle.c:199)
[   29.105108][    C0]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4488)
[   29.105109][    C0]  default_idle (./arch/x86/include/asm/paravirt.h:62 arch/x86/kernel/process.c:768)
[   29.105111][    C0]  default_idle_call (kernel/sched/idle.c:122)
[   29.105113][    C0]  cpuidle_idle_call.constprop.0 (kernel/sched/idle.c:199)
[   29.105114][    C0]  ? arch_cpu_idle_exit+0x40/0x40
[   29.105116][    C0]  ? mark_tsc_async_resets (arch/x86/kernel/tsc_sync.c:49)
[   29.105118][    C0]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[   29.105119][    C0]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   29.105121][    C0]  do_idle (kernel/sched/idle.c:355)
[   29.105123][    C0]  cpu_startup_entry (kernel/sched/idle.c:454)
[   29.105124][    C0]  rest_init (init/main.c:727)
[   29.105126][    C0]  ? __cpuidle_text_end (??:?)
[   29.105129][    C0]  ? rest_init (init/main.c:727)
[   29.105131][    C0]  ? acpi_hw_set_mode (drivers/acpi/acpica/hwacpi.c:72 (discriminator 1))
[   29.105135][    C0]  ? cpus_read_unlock (./include/linux/percpu-rwsem.h:125 (discriminator 1) kernel/cpu.c:502 (discriminator 1))
[   29.105137][    C0]  ? acpi_enable (drivers/acpi/acpica/evxfevnt.c:47)
[   29.105140][    C0]  start_kernel (init/main.c:1185)
[   29.105141][    C0]  x86_64_start_reservations (arch/x86/kernel/head64.c:310)
[   29.105143][    C0]  x86_64_start_kernel (arch/x86/kernel/head64.c:291)
[   29.105145][    C0]  common_startup_64 (arch/x86/kernel/head_64.S:418)
| [   33.596783][   T92] softirqs last disabled at (83605): __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767)
| [   33.596786][   T92] Preemption disabled at:
| [   33.596786][   T92] 0x0
| [   33.596796][   T92] Tainted: [W]=WARN
[   33.596797][   T92] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   33.596799][   T92] Workqueue: events_unbound linkwatch_event
[   33.596805][   T92] Call Trace:
[   33.596807][   T92]  <TASK>
[   33.596808][   T92]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   33.596813][   T92]  __might_resched.cold (kernel/sched/core.c:9234)
[   33.596817][   T92]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   33.596820][   T92]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   33.596824][   T92]  __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))
[   33.596827][   T92]  ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[   33.596830][   T92]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   33.596833][   T92]  ? 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)
[   33.596835][   T92]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   33.596837][   T92]  put_chars (drivers/char/virtio_console.c:1176)
[   33.596839][   T92]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   33.596840][   T92]  ? printk_get_next_message (kernel/printk/printk.c:3072)
[   33.596843][   T92]  ? console_prepend_replay (kernel/printk/printk.c:3005)
[   33.596845][   T92]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   33.596849][   T92]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   33.596850][   T92]  ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[   33.596852][   T92]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   33.596853][   T92]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   33.596855][   T92]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   33.596857][   T92]  console_emit_next_record (kernel/printk/printk.c:3183)
[   33.596860][   T92]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   33.596862][   T92]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   33.596863][   T92]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   33.596865][   T92]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   33.596870][   T92]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   33.596872][   T92]  ? console_flush_one_record (kernel/printk/printk.c:3247)
[   33.596874][   T92]  console_flush_one_record (kernel/printk/printk.c:3268)
[   33.596876][   T92]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   33.596879][   T92]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   33.596880][   T92]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   33.596882][   T92]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   33.596884][   T92]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   33.596885][   T92]  ? lock_release (./include/trace/events/lock.h:68 (discriminator 22) kernel/locking/lockdep.c:5920 (discriminator 22))
[   33.596887][   T92]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   33.596888][   T92]  ? __rcu_read_lock (kernel/rcu/tree_plugin.h:391 (discriminator 6) kernel/rcu/tree_plugin.h:414 (discriminator 6))
[   33.596890][   T92]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   33.596893][   T92]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   33.596895][   T92]  vprintk_emit (kernel/printk/printk.c:2479)
[   33.596898][   T92]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   33.596900][   T92]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   33.596902][   T92]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[   33.596905][   T92]  _printk (kernel/printk/printk.c:2504)
[   33.596909][   T92]  ? snapshot_read.cold (user.c:?)
[   33.596911][   T92]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   33.596912][   T92]  ? fib6_del (net/ipv6/ip6_fib.c:2069)
[   33.596917][   T92] br_set_state (net/bridge/br_stp.c:57 (discriminator 2)) bridge
[   33.596931][   T92] br_stp_disable_port (net/bridge/br_stp_if.c:106) bridge
[   33.596939][   T92] br_port_carrier_check (net/bridge/br_if.c:95) bridge
[   33.596948][   T92] br_device_event (net/bridge/br.c:101) bridge
[   33.596957][   T92]  ? _sub_I_65535_1+0x4d0/0x4d0 stp
[   33.596960][   T92]  ? addrconf_notify (net/ipv6/addrconf.c:3749)
[   33.596963][   T92]  notifier_call_chain (kernel/notifier.c:85)
[   33.596966][   T92]  netif_state_change (net/core/dev.c:1625)
[   33.596969][   T92]  ? dev_deactivate (net/sched/sch_generic.c:1429)
[   33.596972][   T92]  ? call_netdevice_notifiers_info (./include/net/net_namespace.h:422 (discriminator 7))
[   33.596974][   T92]  ? rfc2863_policy (net/core/link_watch.c:52 net/core/link_watch.c:76)
[   33.596976][   T92]  ? linkwatch_do_dev (net/core/link_watch.c:184 net/core/link_watch.c:166)
[   33.596978][   T92]  __linkwatch_run_queue (net/core/link_watch.c:240)
[   33.596980][   T92]  ? linkwatch_do_dev (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   33.596981][   T92]  ? debug_object_active_state (lib/debugobjects.c:1122)
[   33.596985][   T92]  linkwatch_event (net/core/link_watch.c:314 (discriminator 11))
[   33.596987][   T92]  ? __linkwatch_run_queue (./include/linux/list.h:577)
[   33.596989][   T92]  process_one_work (kernel/workqueue.c:3387)
[   33.596993][   T92]  ? __queue_delayed_work (kernel/workqueue.c:2622)
[   33.596996][   T92]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   33.596998][   T92]  ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[   33.597000][   T92]  worker_thread (kernel/workqueue.c:3470 kernel/workqueue.c:3551)
[   33.597003][   T92]  ? rescuer_thread (./include/linux/list.h:419 (discriminator 3))
[   33.597005][   T92]  kthread (kernel/kthread.c:436)
[   33.597007][   T92]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[   33.597008][   T92]  ? kthread_affine_preferred (kernel/kthread.c:857)
[   33.597010][   T92]  ret_from_fork (arch/x86/kernel/process.c:158)
[   33.597013][   T92]  ? arch_exit_to_user_mode_prepare.isra.0 (arch/x86/entry/vdso/vma.c:80 (discriminator 1))
[   33.597015][   T92]  ? __switch_to (arch/x86/kernel/process_64.c:403 arch/x86/kernel/process_64.c:663)
[   33.597017][   T92]  ? kthread_affine_preferred (kernel/kthread.c:857)
[   33.597019][   T92]  ret_from_fork_asm (arch/x86/entry/entry_64.S:245)
| [   38.870236][   T92] softirqs last disabled at (83605): __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767)
| [   38.870238][   T92] Preemption disabled at:
| [   38.870239][   T92] 0x0
| [   38.870249][   T92] Tainted: [W]=WARN
[   38.870250][   T92] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   38.870251][   T92] Workqueue: events_unbound linkwatch_event
[   38.870257][   T92] Call Trace:
[   38.870259][   T92]  <TASK>
[   38.870260][   T92]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   38.870266][   T92]  __might_resched.cold (kernel/sched/core.c:9234)
[   38.870270][   T92]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   38.870273][   T92]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   38.870277][   T92]  __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))
[   38.870281][   T92]  ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[   38.870284][   T92]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   38.870287][   T92]  ? 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)
[   38.870289][   T92]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   38.870291][   T92]  put_chars (drivers/char/virtio_console.c:1176)
[   38.870293][   T92]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   38.870295][   T92]  ? printk_get_next_message (kernel/printk/printk.c:3072)
[   38.870298][   T92]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   38.870301][   T92]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   38.870304][   T92]  ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[   38.870305][   T92]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   38.870307][   T92]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   38.870310][   T92]  console_emit_next_record (kernel/printk/printk.c:3183)
[   38.870312][   T92]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   38.870314][   T92]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   38.870315][   T92]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   38.870317][   T92]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   38.870319][   T92]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   38.870320][   T92]  ? console_flush_one_record (kernel/printk/printk.c:3247)
[   38.870322][   T92]  console_flush_one_record (kernel/printk/printk.c:3268)
[   38.870324][   T92]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   38.870327][   T92]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   38.870328][   T92]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   38.870330][   T92]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   38.870331][   T92]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   38.870333][   T92]  ? lock_release (./include/trace/events/lock.h:68 (discriminator 22) kernel/locking/lockdep.c:5920 (discriminator 22))
[   38.870334][   T92]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   38.870336][   T92]  ? __rcu_read_lock (kernel/rcu/tree_plugin.h:391 (discriminator 6) kernel/rcu/tree_plugin.h:414 (discriminator 6))
[   38.870338][   T92]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   38.870340][   T92]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   38.870342][   T92]  vprintk_emit (kernel/printk/printk.c:2479)
[   38.870344][   T92]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   38.870346][   T92]  ? do_raw_read_unlock (kernel/locking/spinlock_debug.c:180)
[   38.870348][   T92]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   38.870349][   T92]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   38.870351][   T92]  _printk (kernel/printk/printk.c:2504)
[   38.870354][   T92]  ? snapshot_read.cold (user.c:?)
[   38.870356][   T92]  ? netif_get_link_ksettings (net/ethtool/ioctl.c:450)
[   38.870359][   T92]  ? port_cost (net/bridge/br_if.c:40) bridge
[   38.870371][   T92]  ? br_multicast_flood (??:?) bridge
[   38.870384][   T92] br_set_state (net/bridge/br_stp.c:57 (discriminator 2)) bridge
[   38.870392][   T92] br_init_port (net/bridge/br_stp_if.c:39) bridge
[   38.870400][   T92] br_stp_enable_port (net/bridge/br_stp_if.c:93) bridge
[   38.870406][   T92] br_port_carrier_check (net/bridge/br_if.c:90) bridge
[   38.870413][   T92] br_device_event (net/bridge/br.c:101) bridge
[   38.870420][   T92]  ? fib6_ifdown (net/ipv6/route.c:4976)
[   38.870424][   T92]  ? _sub_I_65535_1+0x4d0/0x4d0 stp
[   38.870426][   T92]  ? addrconf_notify (net/ipv6/addrconf.c:3764)
[   38.870430][   T92]  notifier_call_chain (kernel/notifier.c:85)
[   38.870432][   T92]  netif_state_change (net/core/dev.c:1625)
[   38.870435][   T92]  ? call_netdevice_notifiers_info (./include/net/net_namespace.h:422 (discriminator 7))
[   38.870438][   T92]  ? linkwatch_do_dev (net/core/link_watch.c:182 net/core/link_watch.c:166)
[   38.870439][   T92]  __linkwatch_run_queue (net/core/link_watch.c:240)
[   38.870441][   T92]  ? linkwatch_do_dev (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   38.870442][   T92]  ? debug_object_active_state (lib/debugobjects.c:1122)
[   38.870446][   T92]  linkwatch_event (net/core/link_watch.c:314 (discriminator 11))
[   38.870448][   T92]  ? __linkwatch_run_queue (./include/linux/list.h:577)
[   38.870450][   T92]  process_one_work (kernel/workqueue.c:3387)
[   38.870454][   T92]  ? __queue_delayed_work (kernel/workqueue.c:2622)
[   38.870455][   T92]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   38.870457][   T92]  ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[   38.870459][   T92]  worker_thread (kernel/workqueue.c:3470 kernel/workqueue.c:3551)
[   38.870462][   T92]  ? rescuer_thread (./include/linux/list.h:419 (discriminator 3))
[   38.870464][   T92]  kthread (kernel/kthread.c:436)
[   38.870466][   T92]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[   38.870468][   T92]  ? kthread_affine_preferred (kernel/kthread.c:857)
[   38.870470][   T92]  ret_from_fork (arch/x86/kernel/process.c:158)
[   38.870473][   T92]  ? arch_exit_to_user_mode_prepare.isra.0 (arch/x86/entry/vdso/vma.c:80 (discriminator 1))
[   38.870475][   T92]  ? __switch_to (arch/x86/kernel/process_64.c:403 arch/x86/kernel/process_64.c:663)
[   38.870477][   T92]  ? kthread_affine_preferred (kernel/kthread.c:857)
[   38.870479][   T92]  ret_from_fork_asm (arch/x86/entry/entry_64.S:245)
| [   52.774333][   T39] softirqs last disabled at (95117): __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767)
| [   52.774335][   T39] Preemption disabled at:
| [   52.774336][   T39] 0x0
| [   52.774346][   T39] Tainted: [W]=WARN
[   52.774347][   T39] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   52.774349][   T39] Workqueue: events_unbound linkwatch_event
[   52.774356][   T39] Call Trace:
[   52.774357][   T39]  <TASK>
[   52.774358][   T39]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   52.774364][   T39]  __might_resched.cold (kernel/sched/core.c:9234)
[   52.774368][   T39]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   52.774371][   T39]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   52.774375][   T39]  __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))
[   52.774379][   T39]  ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[   52.774382][   T39]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   52.774385][   T39]  ? 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)
[   52.774387][   T39]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   52.774389][   T39]  put_chars (drivers/char/virtio_console.c:1176)
[   52.774390][   T39]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   52.774392][   T39]  ? printk_get_next_message (kernel/printk/printk.c:3072)
[   52.774395][   T39]  ? console_prepend_replay (kernel/printk/printk.c:3005)
[   52.774397][   T39]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   52.774401][   T39]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   52.774402][   T39]  ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[   52.774404][   T39]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   52.774405][   T39]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   52.774407][   T39]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   52.774409][   T39]  console_emit_next_record (kernel/printk/printk.c:3183)
[   52.774412][   T39]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   52.774414][   T39]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   52.774415][   T39]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   52.774417][   T39]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   52.774419][   T39]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   52.774420][   T39]  ? console_flush_one_record (kernel/printk/printk.c:3247)
[   52.774422][   T39]  console_flush_one_record (kernel/printk/printk.c:3268)
[   52.774424][   T39]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   52.774427][   T39]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   52.774429][   T39]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   52.774430][   T39]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   52.774432][   T39]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   52.774434][   T39]  ? lock_release (./include/trace/events/lock.h:68 (discriminator 22) kernel/locking/lockdep.c:5920 (discriminator 22))
[   52.774435][   T39]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   52.774436][   T39]  ? __rcu_read_lock (kernel/rcu/tree_plugin.h:391 (discriminator 6) kernel/rcu/tree_plugin.h:414 (discriminator 6))
[   52.774438][   T39]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   52.774441][   T39]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   52.774443][   T39]  vprintk_emit (kernel/printk/printk.c:2479)
[   52.774446][   T39]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   52.774448][   T39]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   52.774450][   T39]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[   52.774453][   T39]  _printk (kernel/printk/printk.c:2504)
[   52.774456][   T39]  ? snapshot_read.cold (user.c:?)
[   52.774459][   T39]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   52.774460][   T39]  ? fib6_del (net/ipv6/ip6_fib.c:2069)
[   52.774465][   T39] br_set_state (net/bridge/br_stp.c:57 (discriminator 2)) bridge
[   52.774478][   T39] br_stp_disable_port (net/bridge/br_stp_if.c:106) bridge
[   52.774486][   T39] br_port_carrier_check (net/bridge/br_if.c:95) bridge
[   52.774501][   T39] br_device_event (net/bridge/br.c:101) bridge
[   52.774509][   T39]  ? _sub_I_65535_1+0x4d0/0x4d0 stp
[   52.774511][   T39]  ? addrconf_notify (net/ipv6/addrconf.c:3749)
[   52.774515][   T39]  notifier_call_chain (kernel/notifier.c:85)
[   52.774518][   T39]  netif_state_change (net/core/dev.c:1625)
[   52.774521][   T39]  ? dev_deactivate (net/sched/sch_generic.c:1429)
[   52.774524][   T39]  ? call_netdevice_notifiers_info (./include/net/net_namespace.h:422 (discriminator 7))
[   52.774526][   T39]  ? rfc2863_policy (net/core/link_watch.c:52 net/core/link_watch.c:76)
[   52.774527][   T39]  ? linkwatch_do_dev (net/core/link_watch.c:184 net/core/link_watch.c:166)
[   52.774529][   T39]  __linkwatch_run_queue (net/core/link_watch.c:240)
[   52.774531][   T39]  ? linkwatch_do_dev (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   52.774532][   T39]  ? debug_object_active_state (lib/debugobjects.c:1122)
[   52.774536][   T39]  linkwatch_event (net/core/link_watch.c:314 (discriminator 11))
[   52.774538][   T39]  ? __linkwatch_run_queue (./include/linux/list.h:577)
[   52.774540][   T39]  process_one_work (kernel/workqueue.c:3387)
[   52.774544][   T39]  ? __queue_delayed_work (kernel/workqueue.c:2622)
[   52.774545][   T39]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   52.774547][   T39]  ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[   52.774550][   T39]  worker_thread (kernel/workqueue.c:3470 kernel/workqueue.c:3551)
[   52.774553][   T39]  ? rescuer_thread (./include/linux/list.h:419 (discriminator 3))
[   52.774554][   T39]  kthread (kernel/kthread.c:436)
[   52.774556][   T39]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[   52.774557][   T39]  ? kthread_affine_preferred (kernel/kthread.c:857)
[   52.774559][   T39]  ret_from_fork (arch/x86/kernel/process.c:158)
[   52.774562][   T39]  ? arch_exit_to_user_mode_prepare.isra.0 (arch/x86/entry/vdso/vma.c:80 (discriminator 1))
[   52.774564][   T39]  ? __switch_to (arch/x86/kernel/process_64.c:403 arch/x86/kernel/process_64.c:663)
[   52.774567][   T39]  ? kthread_affine_preferred (kernel/kthread.c:857)
[   52.774569][   T39]  ret_from_fork_asm (arch/x86/entry/entry_64.S:245)
| [   58.028569][   T38] softirqs last disabled at (31939): __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767)
| [   58.028571][   T38] Preemption disabled at:
| [   58.028572][   T38] 0x0
| [   58.028581][   T38] Tainted: [W]=WARN
[   58.028582][   T38] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   58.028584][   T38] Workqueue: events_unbound linkwatch_event
[   58.028590][   T38] Call Trace:
[   58.028591][   T38]  <TASK>
[   58.028593][   T38]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   58.028598][   T38]  __might_resched.cold (kernel/sched/core.c:9234)
[   58.028602][   T38]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   58.028605][   T38]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   58.028609][   T38]  __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))
[   58.028613][   T38]  ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[   58.028615][   T38]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   58.028619][   T38]  ? 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)
[   58.028621][   T38]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   58.028623][   T38]  put_chars (drivers/char/virtio_console.c:1176)
[   58.028625][   T38]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   58.028626][   T38]  ? printk_get_next_message (kernel/printk/printk.c:3072)
[   58.028629][   T38]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   58.028633][   T38]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   58.028635][   T38]  ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[   58.028637][   T38]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   58.028639][   T38]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   58.028641][   T38]  console_emit_next_record (kernel/printk/printk.c:3183)
[   58.028643][   T38]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   58.028645][   T38]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   58.028647][   T38]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   58.028648][   T38]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   58.028650][   T38]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   58.028652][   T38]  ? console_flush_one_record (kernel/printk/printk.c:3247)
[   58.028653][   T38]  console_flush_one_record (kernel/printk/printk.c:3268)
[   58.028656][   T38]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   58.028658][   T38]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   58.028660][   T38]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   58.028662][   T38]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   58.028663][   T38]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   58.028665][   T38]  ? lock_release (./include/trace/events/lock.h:68 (discriminator 22) kernel/locking/lockdep.c:5920 (discriminator 22))
[   58.028666][   T38]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   58.028668][   T38]  ? __rcu_read_lock (kernel/rcu/tree_plugin.h:391 (discriminator 6) kernel/rcu/tree_plugin.h:414 (discriminator 6))
[   58.028670][   T38]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   58.028672][   T38]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   58.028674][   T38]  vprintk_emit (kernel/printk/printk.c:2479)
[   58.028676][   T38]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   58.028678][   T38]  ? do_raw_read_unlock (kernel/locking/spinlock_debug.c:180)
[   58.028679][   T38]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   58.028681][   T38]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   58.028683][   T38]  _printk (kernel/printk/printk.c:2504)
[   58.028686][   T38]  ? snapshot_read.cold (user.c:?)
[   58.028688][   T38]  ? netif_get_link_ksettings (net/ethtool/ioctl.c:450)
[   58.028691][   T38]  ? port_cost (net/bridge/br_if.c:40) bridge
[   58.028704][   T38]  ? br_multicast_flood (??:?) bridge
[   58.028712][   T38] br_set_state (net/bridge/br_stp.c:57 (discriminator 2)) bridge
[   58.028720][   T38] br_init_port (net/bridge/br_stp_if.c:39) bridge
[   58.028727][   T38] br_stp_enable_port (net/bridge/br_stp_if.c:93) bridge
[   58.028735][   T38] br_port_carrier_check (net/bridge/br_if.c:90) bridge
[   58.028742][   T38] br_device_event (net/bridge/br.c:101) bridge
[   58.028750][   T38]  ? fib6_ifdown (net/ipv6/route.c:4976)
[   58.028753][   T38]  ? _sub_I_65535_1+0x4d0/0x4d0 stp
[   58.028755][   T38]  ? addrconf_notify (net/ipv6/addrconf.c:3764)
[   58.028759][   T38]  notifier_call_chain (kernel/notifier.c:85)
[   58.028762][   T38]  netif_state_change (net/core/dev.c:1625)
[   58.028765][   T38]  ? call_netdevice_notifiers_info (./include/net/net_namespace.h:422 (discriminator 7))
[   58.028767][   T38]  ? linkwatch_do_dev (net/core/link_watch.c:182 net/core/link_watch.c:166)
[   58.028768][   T38]  __linkwatch_run_queue (net/core/link_watch.c:240)
[   58.028770][   T38]  ? linkwatch_do_dev (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   58.028772][   T38]  ? debug_object_active_state (lib/debugobjects.c:1122)
[   58.028776][   T38]  linkwatch_event (net/core/link_watch.c:314 (discriminator 11))
[   58.028777][   T38]  ? __linkwatch_run_queue (./include/linux/list.h:577)
[   58.028779][   T38]  process_one_work (kernel/workqueue.c:3387)
[   58.028783][   T38]  ? __queue_delayed_work (kernel/workqueue.c:2622)
[   58.028785][   T38]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   58.028786][   T38]  ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[   58.028788][   T38]  worker_thread (kernel/workqueue.c:3470 kernel/workqueue.c:3551)
[   58.028791][   T38]  ? rescuer_thread (./include/linux/list.h:419 (discriminator 3))
[   58.028793][   T38]  kthread (kernel/kthread.c:436)
[   58.028795][   T38]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[   58.028797][   T38]  ? kthread_affine_preferred (kernel/kthread.c:857)
[   58.028799][   T38]  ret_from_fork (arch/x86/kernel/process.c:158)
[   58.028802][   T38]  ? arch_exit_to_user_mode_prepare.isra.0 (arch/x86/entry/vdso/vma.c:80 (discriminator 1))
[   58.028804][   T38]  ? __switch_to (arch/x86/kernel/process_64.c:403 arch/x86/kernel/process_64.c:663)
[   58.028806][   T38]  ? kthread_affine_preferred (kernel/kthread.c:857)


Finger prints:
mark_lock_irq:mark_lock:mark_usage:__lock_acquire:_raw_spin_lock
__irq_exit_rcu:schedule_preempt_disabled:dump_stack_lvl:__kmalloc_noprof:put_chars
__irq_exit_rcu:vprintk_emit:dump_stack_lvl:__kmalloc_noprof:put_chars
__irq_exit_rcu:dump_stack_lvl:__kmalloc_noprof:put_chars:hvc_console_print