======================================
| [   10.577788][  T170] softirqs last disabled at (28633): __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767)
| [   10.577791][  T170] Preemption disabled at:
| [   10.577791][  T170] vprintk_emit (kernel/printk/printk.c:2471)
| [   10.577800][  T170] Tainted: [W]=WARN
[   10.577801][  T170] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   10.577803][  T170] Call Trace:
[   10.577805][  T170]  <TASK>
[   10.577806][  T170]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   10.577812][  T170]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   10.577814][  T170]  __might_resched.cold (kernel/sched/core.c:9234)
[   10.577819][  T170]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   10.577822][  T170]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   10.577827][  T170]  __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))
[   10.577829][  T170]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   10.577835][  T170]  ? 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)
[   10.577838][  T170]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   10.577841][  T170]  put_chars (drivers/char/virtio_console.c:1176)
[   10.577843][  T170]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   10.577846][  T170]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   10.577851][  T170]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   10.577857][  T170]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   10.577859][  T170]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   10.577863][  T170]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   10.577866][  T170]  console_emit_next_record (kernel/printk/printk.c:3183)
[   10.577870][  T170]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   10.577874][  T170]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   10.577876][  T170]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   10.577879][  T170]  console_flush_one_record (kernel/printk/printk.c:3268)
[   10.577883][  T170]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   10.577884][  T170]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   10.577889][  T170]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   10.577892][  T170]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   10.577893][  T170]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   10.577895][  T170]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   10.577898][  T170]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   10.577900][  T170]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   10.577903][  T170]  vprintk_emit (kernel/printk/printk.c:2479)
[   10.577906][  T170]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   10.577908][  T170]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   10.577912][  T170]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   10.577913][  T170]  ? fast_dput (./include/linux/rcupdate.h:319 (discriminator 2) ./include/linux/rcupdate.h:880 (discriminator 2) fs/dcache.c:948 (discriminator 2))
[   10.577917][  T170]  ? cleanup_netconsole (./include/linux/list.h:99 (discriminator 2) ./include/linux/list.h:169 (discriminator 2) ./include/linux/list.h:206 (discriminator 2) ./include/linux/configfs.h:112 (discriminator 2) drivers/net/netconsole.c:1718 (discriminator 2)) netconsole
[   10.577922][  T170]  _printk (kernel/printk/printk.c:2504)
[   10.577926][  T170]  ? snapshot_read.cold (user.c:?)
[   10.577929][  T170]  ? __up_write (kernel/locking/rwsem.c:1422 (discriminator 1))
[   10.577932][  T170]  ? cleanup_netconsole (./include/linux/list.h:99 (discriminator 2) ./include/linux/list.h:169 (discriminator 2) ./include/linux/list.h:206 (discriminator 2) ./include/linux/configfs.h:112 (discriminator 2) drivers/net/netconsole.c:1718 (discriminator 2)) netconsole
[   10.577936][  T170]  ? configfs_register_subsystem (./include/linux/instrumented.h:112 ./include/linux/atomic/atomic-instrumented.h:1383 fs/configfs/dir.c:173 fs/configfs/dir.c:171 fs/configfs/dir.c:1929)
[   10.577940][  T170] init_netconsole (drivers/net/netconsole.c:1286) netconsole
[   10.577944][  T170]  ? cleanup_netconsole (./include/linux/list.h:99 (discriminator 2) ./include/linux/list.h:169 (discriminator 2) ./include/linux/list.h:206 (discriminator 2) ./include/linux/configfs.h:112 (discriminator 2) drivers/net/netconsole.c:1718 (discriminator 2)) netconsole
[   10.577950][  T170]  ? cleanup_netconsole (./include/linux/list.h:99 (discriminator 2) ./include/linux/list.h:169 (discriminator 2) ./include/linux/list.h:206 (discriminator 2) ./include/linux/configfs.h:112 (discriminator 2) drivers/net/netconsole.c:1718 (discriminator 2)) netconsole
[   10.577953][  T170]  do_one_initcall (init/main.c:1357)
[   10.577956][  T170]  ? trace_event_raw_event_initcall_level (./include/trace/events/initcall.h:10)
[   10.577961][  T170]  ? do_init_module (./include/linux/slab.h:991 (discriminator 1) kernel/module/main.c:3105 (discriminator 1))
[   10.577964][  T170]  ? kasan_unpoison (mm/kasan/shadow.c:146 mm/kasan/shadow.c:178)
[   10.577969][  T170]  do_init_module (kernel/module/main.c:3117)
[   10.577972][  T170]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4488)
[   10.577977][  T170]  ? free_module (./include/trace/events/module.h:50 (discriminator 19))
[   10.577979][  T170]  ? kfree (./include/linux/kasan.h:235 mm/slub.c:2748 mm/slub.c:6499 mm/slub.c:6792)
[   10.577983][  T170]  load_module (kernel/module/main.c:3593)
[   10.577989][  T170]  ? layout_and_allocate.isra.0 (kernel/module/main.c:3016)
[   10.577993][  T170]  ? __ia32_sys_fsconfig (??:?)
[   10.577996][  T170]  ? ovl_real_file (fs/overlayfs/file.c:195)
[   10.578000][  T170]  ? backing_file_read_iter (fs/backing-file.c:211)
[   10.578003][  T170]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   10.578007][  T170]  init_module_from_file (kernel/module/main.c:3790)
[   10.578011][  T170]  ? __do_sys_init_module (kernel/module/main.c:3664)
[   10.578018][  T170]  ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[   10.578021][  T170]  ? 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)
[   10.578024][  T170]  idempotent_init_module (kernel/module/main.c:3802)
[   10.578027][  T170]  ? init_module_from_file (kernel/module/main.c:3791)
[   10.578033][  T170]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   10.578035][  T170]  ? cap_capable (./include/trace/events/capability.h:26 (discriminator 22) security/commoncap.c:130 (discriminator 22))
[   10.578041][  T170]  __x64_sys_finit_module (kernel/module/main.c:3828 kernel/module/main.c:3812 kernel/module/main.c:3812)
[   10.578042][  T170]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[   10.578047][  T170]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   10.578048][  T170]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   10.578051][  T170]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   10.578054][  T170] RIP: 0033:0x7fbdf641437d
[   10.578058][  T170] 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
[   10.578060][  T170] RSP: 002b:00007ffc1259f538 EFLAGS: 00000246 ORIG_RAX: 0000000000000139
[   10.578064][  T170] RAX: ffffffffffffffda RBX: 000055a9db136700 RCX: 00007fbdf641437d
[   10.578065][  T170] RDX: 0000000000000000 RSI: 000055a9ad0f1ffd RDI: 0000000000000005
[   10.578067][  T170] RBP: 00007ffc1259f5d0 R08: 0000000000000000 R09: 0000000000000000
[   10.578068][  T170] R10: 0000000000000000 R11: 0000000000000246 R12: 000055a9ad0f1ffd
[   10.578069][  T170] R13: 000055a9db136810 R14: 0000000000040000 R15: 0000000000000000
| [   12.742788][  T158] softirqs last disabled at (143736): restore_fpregs_from_user (./include/linux/bottom_half.h:20 (discriminator 2) ./arch/x86/include/asm/fpu/api.h:69 (discriminator 2) arch/x86/kernel/fpu/signal.c:277 (discriminator 2))
| [   12.742796][  T158] Preemption disabled at:
| [   12.742800][  T158] vprintk_emit (kernel/printk/printk.c:2471)
| [   12.742820][  T158] Tainted: [W]=WARN
[   12.742822][  T158] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   12.742825][  T158] Call Trace:
[   12.742830][  T158]  <TASK>
[   12.742836][  T158]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   12.742849][  T158]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   12.742858][  T158]  __might_resched.cold (kernel/sched/core.c:9234)
[   12.742869][  T158]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   12.742881][  T158]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   12.742896][  T158]  __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))
[   12.742903][  T158]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   12.742918][  T158]  ? 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)
[   12.742926][  T158]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   12.742936][  T158]  put_chars (drivers/char/virtio_console.c:1176)
[   12.742947][  T158]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   12.742955][  T158]  ? printk_get_next_message (kernel/printk/printk.c:3072)
[   12.742964][  T158]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   12.742974][  T158]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   12.742985][  T158]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   12.742996][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   12.743000][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   12.743013][  T158]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   12.743024][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   12.743035][  T158]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   12.743045][  T158]  console_emit_next_record (kernel/printk/printk.c:3183)
[   12.743056][  T158]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   12.743069][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   12.743078][  T158]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   12.743090][  T158]  console_flush_one_record (kernel/printk/printk.c:3268)
[   12.743105][  T158]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   12.743111][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   12.743126][  T158]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   12.743136][  T158]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   12.743144][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   12.743150][  T158]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   12.743163][  T158]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   12.743169][  T158]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   12.743181][  T158]  vprintk_emit (kernel/printk/printk.c:2479)
[   12.743192][  T158]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   12.743203][  T158]  ? _copy_from_iter (./include/linux/instrumented.h:146 lib/iov_iter.c:66 ./include/linux/iov_iter.h:30 ./include/linux/iov_iter.h:302 ./include/linux/iov_iter.h:330 lib/iov_iter.c:261 lib/iov_iter.c:272)
[   12.743220][  T158]  devkmsg_emit.constprop.0 (kernel/printk/printk.c:733)
[   12.743231][  T158]  ? vprintk_emit.cold (kernel/printk/printk.c:2449)
[   12.743244][  T158]  ? __kmalloc_noprof (mm/slub.c:5415 mm/slub.c:5439)
[   12.743253][  T158]  ? idr_get_free (??:?)
[   12.743263][  T158]  ? devkmsg_write (./include/linux/slab.h:995 kernel/printk/printk.c:762)
[   12.743272][  T158]  ? _copy_from_iter (./include/linux/instrumented.h:146 lib/iov_iter.c:66 ./include/linux/iov_iter.h:30 ./include/linux/iov_iter.h:302 ./include/linux/iov_iter.h:330 lib/iov_iter.c:261 lib/iov_iter.c:272)
[   12.743282][  T158]  devkmsg_write.cold (kernel/printk/printk.c:796)
[   12.743293][  T158]  ? vprintk_default (kernel/printk/printk.c:2494)
[   12.743299][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   12.743306][  T158]  ? vfs_lock_file (./include/linux/fs.h:1348)
[   12.743319][  T158]  ? vprintk_default (kernel/printk/printk.c:2494)
[   12.743328][  T158]  new_sync_write (fs/read_write.c:595)
[   12.743343][  T158]  ? new_sync_read (./include/linux/ioprio.h:41)
[   12.743350][  T158]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   12.743371][  T158]  vfs_write (fs/read_write.c:687)
[   12.743384][  T158]  ksys_write (fs/read_write.c:739)
[   12.743395][  T158]  ? __ia32_sys_read (fs/read_write.c:723)
[   12.743401][  T158]  ? 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)
[   12.743411][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   12.743421][  T158]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   12.743431][  T158]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   12.743439][  T158]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   12.743449][  T158] RIP: 0033:0x7fef94e2754e
[   12.743457][  T158] 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
[   12.743462][  T158] RSP: 002b:00007ffc75f902b0 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[   12.743470][  T158] RAX: ffffffffffffffda RBX: 00007fef94fa8580 RCX: 00007fef94e2754e
[   12.743473][  T158] RDX: 0000000000000025 RSI: 00005616998deff0 RDI: 0000000000000001
[   12.743477][  T158] RBP: 00007ffc75f902c0 R08: 0000000000000000 R09: 0000000000000000
[   12.743480][  T158] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000025
[   12.743485][  T158] R13: 0000000000000025 R14: 00005616998deff0 R15: 0000000000000000
| [   13.742833][  T158] softirqs last disabled at (329725): __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767)
| [   13.742836][  T158] Preemption disabled at:
| [   13.742837][  T158] vprintk_emit (kernel/printk/printk.c:2471)
| [   13.742846][  T158] Tainted: [W]=WARN
[   13.742847][  T158] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   13.742849][  T158] Call Trace:
[   13.742851][  T158]  <TASK>
[   13.742852][  T158]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   13.742858][  T158]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   13.742860][  T158]  __might_resched.cold (kernel/sched/core.c:9234)
[   13.742864][  T158]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   13.742868][  T158]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   13.742873][  T158]  __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))
[   13.742875][  T158]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   13.742881][  T158]  ? 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)
[   13.742883][  T158]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   13.742886][  T158]  put_chars (drivers/char/virtio_console.c:1176)
[   13.742889][  T158]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   13.742890][  T158]  ? printk_get_next_message (kernel/printk/printk.c:3072)
[   13.742894][  T158]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   13.742897][  T158]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   13.742901][  T158]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   13.742904][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   13.742905][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   13.742909][  T158]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   13.742912][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   13.742915][  T158]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   13.742919][  T158]  console_emit_next_record (kernel/printk/printk.c:3183)
[   13.742922][  T158]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   13.742926][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   13.742929][  T158]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   13.742932][  T158]  console_flush_one_record (kernel/printk/printk.c:3268)
[   13.742936][  T158]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   13.742938][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   13.742943][  T158]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   13.742945][  T158]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   13.742947][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   13.742949][  T158]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   13.742952][  T158]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   13.742954][  T158]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   13.742957][  T158]  vprintk_emit (kernel/printk/printk.c:2479)
[   13.742960][  T158]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   13.742963][  T158]  ? _copy_from_iter (./include/linux/instrumented.h:146 lib/iov_iter.c:66 ./include/linux/iov_iter.h:30 ./include/linux/iov_iter.h:302 ./include/linux/iov_iter.h:330 lib/iov_iter.c:261 lib/iov_iter.c:272)
[   13.742969][  T158]  devkmsg_emit.constprop.0 (kernel/printk/printk.c:733)
[   13.742973][  T158]  ? vprintk_emit.cold (kernel/printk/printk.c:2449)
[   13.742977][  T158]  ? __kmalloc_noprof (mm/slub.c:5415 mm/slub.c:5439)
[   13.742979][  T158]  ? idr_get_free (??:?)
[   13.742983][  T158]  ? devkmsg_write (./include/linux/slab.h:995 kernel/printk/printk.c:762)
[   13.742986][  T158]  ? _copy_from_iter (./include/linux/instrumented.h:146 lib/iov_iter.c:66 ./include/linux/iov_iter.h:30 ./include/linux/iov_iter.h:302 ./include/linux/iov_iter.h:330 lib/iov_iter.c:261 lib/iov_iter.c:272)
[   13.742989][  T158]  devkmsg_write.cold (kernel/printk/printk.c:796)
[   13.742992][  T158]  ? vprintk_default (kernel/printk/printk.c:2494)
[   13.742993][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   13.742995][  T158]  ? vfs_lock_file (./include/linux/fs.h:1348)
[   13.743000][  T158]  ? vprintk_default (kernel/printk/printk.c:2494)
[   13.743002][  T158]  new_sync_write (fs/read_write.c:595)
[   13.743007][  T158]  ? new_sync_read (./include/linux/ioprio.h:41)
[   13.743009][  T158]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   13.743017][  T158]  vfs_write (fs/read_write.c:687)
[   13.743021][  T158]  ksys_write (fs/read_write.c:739)
[   13.743024][  T158]  ? __ia32_sys_read (fs/read_write.c:723)
[   13.743025][  T158]  ? 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)
[   13.743028][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   13.743031][  T158]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   13.743033][  T158]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   13.743037][  T158]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   13.743039][  T158] RIP: 0033:0x7fef94e2754e
[   13.743043][  T158] 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
[   13.743045][  T158] RSP: 002b:00007ffc75f902b0 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[   13.743048][  T158] RAX: ffffffffffffffda RBX: 00007fef94fa8580 RCX: 00007fef94e2754e
[   13.743050][  T158] RDX: 0000000000000026 RSI: 00005616998deff0 RDI: 0000000000000001
[   13.743051][  T158] RBP: 00007ffc75f902c0 R08: 0000000000000000 R09: 0000000000000000
[   13.743052][  T158] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000026
[   13.743053][  T158] R13: 0000000000000026 R14: 00005616998deff0 R15: 0000000000000000
| [   14.757975][  T158] softirqs last disabled at (475912): restore_fpregs_from_user (./include/linux/bottom_half.h:20 (discriminator 2) ./arch/x86/include/asm/fpu/api.h:69 (discriminator 2) arch/x86/kernel/fpu/signal.c:277 (discriminator 2))
| [   14.757977][  T158] Preemption disabled at:
| [   14.757978][  T158] vprintk_emit (kernel/printk/printk.c:2471)
| [   14.757986][  T158] Tainted: [W]=WARN
[   14.757987][  T158] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   14.757989][  T158] Call Trace:
[   14.757991][  T158]  <TASK>
[   14.757992][  T158]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   14.757997][  T158]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   14.757999][  T158]  __might_resched.cold (kernel/sched/core.c:9234)
[   14.758004][  T158]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   14.758007][  T158]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   14.758012][  T158]  __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))
[   14.758014][  T158]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   14.758020][  T158]  ? 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)
[   14.758023][  T158]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   14.758025][  T158]  put_chars (drivers/char/virtio_console.c:1176)
[   14.758028][  T158]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   14.758029][  T158]  ? printk_get_next_message (kernel/printk/printk.c:3072)
[   14.758033][  T158]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   14.758036][  T158]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   14.758040][  T158]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   14.758042][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   14.758044][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   14.758048][  T158]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   14.758051][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   14.758054][  T158]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   14.758058][  T158]  console_emit_next_record (kernel/printk/printk.c:3183)
[   14.758061][  T158]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   14.758065][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   14.758067][  T158]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   14.758071][  T158]  console_flush_one_record (kernel/printk/printk.c:3268)
[   14.758074][  T158]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   14.758076][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   14.758081][  T158]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   14.758083][  T158]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   14.758085][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   14.758087][  T158]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   14.758090][  T158]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   14.758092][  T158]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   14.758095][  T158]  vprintk_emit (kernel/printk/printk.c:2479)
[   14.758098][  T158]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   14.758101][  T158]  ? _copy_from_iter (./include/linux/instrumented.h:146 lib/iov_iter.c:66 ./include/linux/iov_iter.h:30 ./include/linux/iov_iter.h:302 ./include/linux/iov_iter.h:330 lib/iov_iter.c:261 lib/iov_iter.c:272)
[   14.758107][  T158]  devkmsg_emit.constprop.0 (kernel/printk/printk.c:733)
[   14.758111][  T158]  ? vprintk_emit.cold (kernel/printk/printk.c:2449)
[   14.758115][  T158]  ? __kmalloc_noprof (mm/slub.c:5415 mm/slub.c:5439)
[   14.758116][  T158]  ? idr_get_free (??:?)
[   14.758120][  T158]  ? devkmsg_write (./include/linux/slab.h:995 kernel/printk/printk.c:762)
[   14.758123][  T158]  ? _copy_from_iter (./include/linux/instrumented.h:146 lib/iov_iter.c:66 ./include/linux/iov_iter.h:30 ./include/linux/iov_iter.h:302 ./include/linux/iov_iter.h:330 lib/iov_iter.c:261 lib/iov_iter.c:272)
[   14.758126][  T158]  devkmsg_write.cold (kernel/printk/printk.c:796)
[   14.758129][  T158]  ? vprintk_default (kernel/printk/printk.c:2494)
[   14.758130][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   14.758132][  T158]  ? vfs_lock_file (./include/linux/fs.h:1348)
[   14.758137][  T158]  ? vprintk_default (kernel/printk/printk.c:2494)
[   14.758139][  T158]  new_sync_write (fs/read_write.c:595)
[   14.758144][  T158]  ? new_sync_read (./include/linux/ioprio.h:41)
[   14.758146][  T158]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   14.758153][  T158]  vfs_write (fs/read_write.c:687)
[   14.758158][  T158]  ksys_write (fs/read_write.c:739)
[   14.758160][  T158]  ? __ia32_sys_read (fs/read_write.c:723)
[   14.758162][  T158]  ? 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)
[   14.758165][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   14.758168][  T158]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   14.758170][  T158]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   14.758174][  T158]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   14.758176][  T158] RIP: 0033:0x7fef94e2754e
[   14.758180][  T158] Code: 4d 89 d8 e8 b4 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 03 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 b4 bd 00 00       	call   0xbdbc
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 03 ff ff ff       	call   0xffffffffffffff3c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 03 ff ff ff       	call   0xffffffffffffff12
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[   14.758182][  T158] RSP: 002b:00007ffc75f902b0 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[   14.758185][  T158] RAX: ffffffffffffffda RBX: 00007fef94fa8580 RCX: 00007fef94e2754e
[   14.758186][  T158] RDX: 0000000000000026 RSI: 00005616998deff0 RDI: 0000000000000001
[   14.758187][  T158] RBP: 00007ffc75f902c0 R08: 0000000000000000 R09: 0000000000000000
[   14.758188][  T158] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000026
[   14.758189][  T158] R13: 0000000000000026 R14: 00005616998deff0 R15: 0000000000000000
| [   15.786531][  T158] softirqs last disabled at (629120): restore_fpregs_from_user (./include/linux/bottom_half.h:20 (discriminator 2) ./arch/x86/include/asm/fpu/api.h:69 (discriminator 2) arch/x86/kernel/fpu/signal.c:277 (discriminator 2))
| [   15.786535][  T158] Preemption disabled at:
| [   15.786536][  T158] vprintk_emit (kernel/printk/printk.c:2471)
| [   15.786548][  T158] Tainted: [W]=WARN
[   15.786549][  T158] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   15.786552][  T158] Call Trace:
[   15.786554][  T158]  <TASK>
[   15.786557][  T158]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   15.786563][  T158]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   15.786567][  T158]  __might_resched.cold (kernel/sched/core.c:9234)
[   15.786578][  T158]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   15.786584][  T158]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   15.786591][  T158]  __kmalloc_noprof (./include/linux/sched/mm.h:322 (discriminator 2) mm/slub.c:4636 (discriminator 2) mm/slub.c:4974 (discriminator 2) mm/slub.c:5413 (discriminator 2) mm/slub.c:5439 (discriminator 2))
[   15.786594][  T158]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   15.786603][  T158]  ? do_raw_spin_unlock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:32 ./include/asm-generic/qspinlock.h:58 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141)
[   15.786607][  T158]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   15.786612][  T158]  put_chars (drivers/char/virtio_console.c:1176)
[   15.786617][  T158]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   15.786619][  T158]  ? printk_get_next_message (kernel/printk/printk.c:3072)
[   15.786624][  T158]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   15.786629][  T158]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   15.786636][  T158]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   15.786640][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   15.786643][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   15.786656][  T158]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   15.786661][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   15.786666][  T158]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   15.786673][  T158]  console_emit_next_record (kernel/printk/printk.c:3183)
[   15.786679][  T158]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   15.786686][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   15.786689][  T158]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   15.786696][  T158]  console_flush_one_record (kernel/printk/printk.c:3268)
[   15.786702][  T158]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   15.786705][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   15.786714][  T158]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   15.786718][  T158]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   15.786721][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   15.786725][  T158]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   15.786731][  T158]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   15.786733][  T158]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   15.786738][  T158]  vprintk_emit (kernel/printk/printk.c:2479)
[   15.786744][  T158]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   15.786749][  T158]  ? _copy_from_iter (./include/linux/instrumented.h:146 lib/iov_iter.c:66 ./include/linux/iov_iter.h:30 ./include/linux/iov_iter.h:302 ./include/linux/iov_iter.h:330 lib/iov_iter.c:261 lib/iov_iter.c:272)
[   15.786758][  T158]  devkmsg_emit.constprop.0 (kernel/printk/printk.c:733)
[   15.786763][  T158]  ? vprintk_emit.cold (kernel/printk/printk.c:2449)
[   15.786770][  T158]  ? __kmalloc_noprof (mm/slub.c:5415 mm/slub.c:5439)
[   15.786773][  T158]  ? idr_get_free (??:?)
[   15.786778][  T158]  ? devkmsg_write (./include/linux/slab.h:995 kernel/printk/printk.c:762)
[   15.786783][  T158]  ? _copy_from_iter (./include/linux/instrumented.h:146 lib/iov_iter.c:66 ./include/linux/iov_iter.h:30 ./include/linux/iov_iter.h:302 ./include/linux/iov_iter.h:330 lib/iov_iter.c:261 lib/iov_iter.c:272)
[   15.786787][  T158]  devkmsg_write.cold (kernel/printk/printk.c:796)
[   15.786792][  T158]  ? vprintk_default (kernel/printk/printk.c:2494)
[   15.786794][  T158]  ? handle_pte_fault (mm/memory.c:6582)
[   15.786801][  T158]  ? do_numa_page.isra.0 (mm/memory.c:6319 (discriminator 1))
[   15.786805][  T158]  ? vprintk_default (kernel/printk/printk.c:2494)
[   15.786809][  T158]  new_sync_write (fs/read_write.c:595)
[   15.786816][  T158]  ? new_sync_read (./include/linux/ioprio.h:41)
[   15.786819][  T158]  ? lock_vma_under_rcu (./include/linux/rcupdate.h:319 (discriminator 2) ./include/linux/rcupdate.h:880 (discriminator 2) mm/mmap_lock.c:329 (discriminator 2))
[   15.786833][  T158]  vfs_write (fs/read_write.c:687)
[   15.786840][  T158]  ksys_write (fs/read_write.c:739)
[   15.786845][  T158]  ? __ia32_sys_read (fs/read_write.c:723)
[   15.786849][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   15.786852][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   15.786858][  T158]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   15.786862][  T158]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   15.786867][  T158]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   15.786870][  T158] RIP: 0033:0x7fef94e2754e
[   15.786875][  T158] Code: 4d 89 d8 e8 b4 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 03 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 b4 bd 00 00       	call   0xbdbc
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 03 ff ff ff       	call   0xffffffffffffff3c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 03 ff ff ff       	call   0xffffffffffffff12
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[   15.786877][  T158] RSP: 002b:00007ffc75f902b0 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[   15.786881][  T158] RAX: ffffffffffffffda RBX: 00007fef94fa8580 RCX: 00007fef94e2754e
[   15.786884][  T158] RDX: 0000000000000027 RSI: 00005616998deff0 RDI: 0000000000000001
[   15.786885][  T158] RBP: 00007ffc75f902c0 R08: 0000000000000000 R09: 0000000000000000
[   15.786887][  T158] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000027
[   15.786888][  T158] R13: 0000000000000027 R14: 00005616998deff0 R15: 0000000000000000
| [   16.796497][  T158] softirqs last disabled at (818330): restore_fpregs_from_user (./include/linux/bottom_half.h:20 (discriminator 2) ./arch/x86/include/asm/fpu/api.h:69 (discriminator 2) arch/x86/kernel/fpu/signal.c:277 (discriminator 2))
| [   16.796500][  T158] Preemption disabled at:
| [   16.796501][  T158] vprintk_emit (kernel/printk/printk.c:2471)
| [   16.796514][  T158] Tainted: [W]=WARN
[   16.796515][  T158] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   16.796518][  T158] Call Trace:
[   16.796520][  T158]  <TASK>
[   16.796523][  T158]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   16.796529][  T158]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   16.796532][  T158]  __might_resched.cold (kernel/sched/core.c:9234)
[   16.796539][  T158]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   16.796544][  T158]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   16.796551][  T158]  __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))
[   16.796555][  T158]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   16.796564][  T158]  ? 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)
[   16.796567][  T158]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   16.796577][  T158]  put_chars (drivers/char/virtio_console.c:1176)
[   16.796581][  T158]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   16.796584][  T158]  ? printk_get_next_message (kernel/printk/printk.c:3072)
[   16.796589][  T158]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   16.796594][  T158]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   16.796601][  T158]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   16.796605][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   16.796607][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   16.796615][  T158]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   16.796620][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   16.796625][  T158]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   16.796631][  T158]  console_emit_next_record (kernel/printk/printk.c:3183)
[   16.796637][  T158]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   16.796652][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   16.796655][  T158]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   16.796662][  T158]  console_flush_one_record (kernel/printk/printk.c:3268)
[   16.796668][  T158]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   16.796671][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   16.796680][  T158]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   16.796684][  T158]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   16.796687][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   16.796690][  T158]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   16.796696][  T158]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   16.796699][  T158]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   16.796704][  T158]  vprintk_emit (kernel/printk/printk.c:2479)
[   16.796709][  T158]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   16.796714][  T158]  ? _copy_from_iter (./include/linux/instrumented.h:146 lib/iov_iter.c:66 ./include/linux/iov_iter.h:30 ./include/linux/iov_iter.h:302 ./include/linux/iov_iter.h:330 lib/iov_iter.c:261 lib/iov_iter.c:272)
[   16.796722][  T158]  devkmsg_emit.constprop.0 (kernel/printk/printk.c:733)
[   16.796728][  T158]  ? vprintk_emit.cold (kernel/printk/printk.c:2449)
[   16.796734][  T158]  ? __kmalloc_noprof (mm/slub.c:5415 mm/slub.c:5439)
[   16.796737][  T158]  ? idr_get_free (??:?)
[   16.796742][  T158]  ? devkmsg_write (./include/linux/slab.h:995 kernel/printk/printk.c:762)
[   16.796747][  T158]  ? _copy_from_iter (./include/linux/instrumented.h:146 lib/iov_iter.c:66 ./include/linux/iov_iter.h:30 ./include/linux/iov_iter.h:302 ./include/linux/iov_iter.h:330 lib/iov_iter.c:261 lib/iov_iter.c:272)
[   16.796752][  T158]  devkmsg_write.cold (kernel/printk/printk.c:796)
[   16.796756][  T158]  ? vprintk_default (kernel/printk/printk.c:2494)
[   16.796759][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   16.796762][  T158]  ? vfs_lock_file (./include/linux/fs.h:1348)
[   16.796769][  T158]  ? vprintk_default (kernel/printk/printk.c:2494)
[   16.796773][  T158]  new_sync_write (fs/read_write.c:595)
[   16.796780][  T158]  ? new_sync_read (./include/linux/ioprio.h:41)
[   16.796782][  T158]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   16.796797][  T158]  vfs_write (fs/read_write.c:687)
[   16.796804][  T158]  ksys_write (fs/read_write.c:739)
[   16.796809][  T158]  ? __ia32_sys_read (fs/read_write.c:723)
[   16.796811][  T158]  ? 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)
[   16.796816][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   16.796821][  T158]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   16.796825][  T158]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   16.796830][  T158]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   16.796833][  T158] RIP: 0033:0x7fef94e2754e
[   16.796839][  T158] 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
[   16.796841][  T158] RSP: 002b:00007ffc75f902b0 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[   16.796846][  T158] RAX: ffffffffffffffda RBX: 00007fef94fa8580 RCX: 00007fef94e2754e
[   16.796848][  T158] RDX: 0000000000000027 RSI: 00005616998deff0 RDI: 0000000000000001
[   16.796849][  T158] RBP: 00007ffc75f902c0 R08: 0000000000000000 R09: 0000000000000000
[   16.796851][  T158] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000027


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