======================================
| [   10.288369][  T169] softirqs last disabled at (29995): __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767)
| [   10.288372][  T169] Preemption disabled at:
| [   10.288372][  T169] vprintk_emit (kernel/printk/printk.c:2471)
| [   10.288383][  T169] Tainted: [W]=WARN
[   10.288384][  T169] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   10.288386][  T169] Call Trace:
[   10.288388][  T169]  <TASK>
[   10.288389][  T169]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   10.288395][  T169]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   10.288397][  T169]  __might_resched.cold (kernel/sched/core.c:9234)
[   10.288401][  T169]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   10.288405][  T169]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   10.288409][  T169]  __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))
[   10.288411][  T169]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   10.288417][  T169]  ? 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)
[   10.288419][  T169]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   10.288422][  T169]  put_chars (drivers/char/virtio_console.c:1176)
[   10.288425][  T169]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   10.288428][  T169]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   10.288433][  T169]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   10.288439][  T169]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   10.288441][  T169]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   10.288444][  T169]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   10.288448][  T169]  console_emit_next_record (kernel/printk/printk.c:3183)
[   10.288451][  T169]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   10.288455][  T169]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   10.288457][  T169]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   10.288461][  T169]  console_flush_one_record (kernel/printk/printk.c:3268)
[   10.288465][  T169]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   10.288466][  T169]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   10.288471][  T169]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   10.288474][  T169]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   10.288475][  T169]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   10.288477][  T169]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   10.288480][  T169]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   10.288482][  T169]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   10.288485][  T169]  vprintk_emit (kernel/printk/printk.c:2479)
[   10.288488][  T169]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   10.288490][  T169]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   10.288494][  T169]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   10.288495][  T169]  ? fast_dput (./include/linux/rcupdate.h:319 (discriminator 2) ./include/linux/rcupdate.h:880 (discriminator 2) fs/dcache.c:948 (discriminator 2))
[   10.288499][  T169]  ? 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
[   10.288503][  T169]  _printk (kernel/printk/printk.c:2504)
[   10.288507][  T169]  ? snapshot_read.cold (user.c:?)
[   10.288510][  T169]  ? __up_write (kernel/locking/rwsem.c:1422 (discriminator 1))
[   10.288513][  T169]  ? 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
[   10.288517][  T169]  ? 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)
[   10.288522][  T169] init_netconsole (drivers/net/netconsole.c:1286) netconsole
[   10.288525][  T169]  ? 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
[   10.288531][  T169]  ? 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
[   10.288534][  T169]  do_one_initcall (init/main.c:1357)
[   10.288537][  T169]  ? trace_event_raw_event_initcall_level (./include/trace/events/initcall.h:10)
[   10.288542][  T169]  ? do_init_module (./include/linux/slab.h:991 (discriminator 1) kernel/module/main.c:3105 (discriminator 1))
[   10.288545][  T169]  ? kasan_unpoison (mm/kasan/shadow.c:146 mm/kasan/shadow.c:178)
[   10.288550][  T169]  do_init_module (kernel/module/main.c:3117)
[   10.288553][  T169]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4488)
[   10.288558][  T169]  ? free_module (./include/trace/events/module.h:50 (discriminator 19))
[   10.288561][  T169]  ? kfree (./include/linux/kasan.h:235 mm/slub.c:2748 mm/slub.c:6499 mm/slub.c:6792)
[   10.288564][  T169]  load_module (kernel/module/main.c:3593)
[   10.288571][  T169]  ? layout_and_allocate.isra.0 (kernel/module/main.c:3016)
[   10.288574][  T169]  ? __ia32_sys_fsconfig (??:?)
[   10.288577][  T169]  ? ovl_real_file (fs/overlayfs/file.c:195)
[   10.288580][  T169]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   10.288583][  T169]  ? backing_file_read_iter (fs/backing-file.c:211)
[   10.288586][  T169]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   10.288590][  T169]  init_module_from_file (kernel/module/main.c:3790)
[   10.288594][  T169]  ? __do_sys_init_module (kernel/module/main.c:3664)
[   10.288601][  T169]  ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[   10.288604][  T169]  ? 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)
[   10.288607][  T169]  idempotent_init_module (kernel/module/main.c:3802)
[   10.288610][  T169]  ? init_module_from_file (kernel/module/main.c:3791)
[   10.288616][  T169]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   10.288618][  T169]  ? cap_capable (./include/trace/events/capability.h:26 (discriminator 22) security/commoncap.c:130 (discriminator 22))
[   10.288624][  T169]  __x64_sys_finit_module (kernel/module/main.c:3828 kernel/module/main.c:3812 kernel/module/main.c:3812)
[   10.288626][  T169]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[   10.288630][  T169]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   10.288632][  T169]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   10.288635][  T169]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   10.288637][  T169] RIP: 0033:0x7ff48be4c37d
[   10.288640][  T169] 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
[   10.288642][  T169] RSP: 002b:00007ffe92ba7f78 EFLAGS: 00000246 ORIG_RAX: 0000000000000139
[   10.288645][  T169] RAX: ffffffffffffffda RBX: 000055ee6a207700 RCX: 00007ff48be4c37d
[   10.288646][  T169] RDX: 0000000000000000 RSI: 000055ee44535ffd RDI: 0000000000000005
[   10.288647][  T169] RBP: 00007ffe92ba8010 R08: 0000000000000000 R09: 0000000000000000
[   10.288647][  T169] R10: 0000000000000000 R11: 0000000000000246 R12: 000055ee44535ffd
[   10.288648][  T169] R13: 000055ee6a207810 R14: 0000000000040000 R15: 0000000000000000
| [   12.464741][  T222] softirqs last disabled at (11925): __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767)
| [   12.464744][  T222] Preemption disabled at:
| [   12.464745][  T222] vprintk_emit (kernel/printk/printk.c:2471)
| [   12.464754][  T222] Tainted: [W]=WARN
[   12.464755][  T222] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   12.464757][  T222] Call Trace:
[   12.464758][  T222]  <TASK>
[   12.464760][  T222]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   12.464765][  T222]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   12.464767][  T222]  __might_resched.cold (kernel/sched/core.c:9234)
[   12.464772][  T222]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   12.464776][  T222]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   12.464780][  T222]  __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))
[   12.464782][  T222]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   12.464788][  T222]  ? 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)
[   12.464790][  T222]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   12.464793][  T222]  put_chars (drivers/char/virtio_console.c:1176)
[   12.464796][  T222]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   12.464798][  T222]  ? printk_get_next_message (kernel/printk/printk.c:3072)
[   12.464801][  T222]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   12.464804][  T222]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   12.464808][  T222]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   12.464811][  T222]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   12.464812][  T222]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   12.464816][  T222]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   12.464819][  T222]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   12.464822][  T222]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   12.464826][  T222]  console_emit_next_record (kernel/printk/printk.c:3183)
[   12.464829][  T222]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   12.464833][  T222]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   12.464836][  T222]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   12.464839][  T222]  console_flush_one_record (kernel/printk/printk.c:3268)
[   12.464843][  T222]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   12.464845][  T222]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   12.464850][  T222]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   12.464852][  T222]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   12.464854][  T222]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   12.464856][  T222]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   12.464859][  T222]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   12.464861][  T222]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   12.464864][  T222]  vprintk_emit (kernel/printk/printk.c:2479)
[   12.464867][  T222]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   12.464870][  T222]  ? _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)
[   12.464876][  T222]  devkmsg_emit.constprop.0 (kernel/printk/printk.c:733)
[   12.464880][  T222]  ? vprintk_emit.cold (kernel/printk/printk.c:2449)
[   12.464884][  T222]  ? __kmalloc_noprof (mm/slub.c:5415 mm/slub.c:5439)
[   12.464886][  T222]  ? idr_get_free (??:?)
[   12.464890][  T222]  ? devkmsg_write (./include/linux/slab.h:995 kernel/printk/printk.c:762)
[   12.464893][  T222]  ? _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)
[   12.464896][  T222]  devkmsg_write.cold (kernel/printk/printk.c:796)
[   12.464898][  T222]  ? vprintk_default (kernel/printk/printk.c:2494)
[   12.464900][  T222]  ? handle_pte_fault (mm/memory.c:6558)
[   12.464905][  T222]  ? do_numa_page.isra.0 (mm/memory.c:6319 (discriminator 1))
[   12.464907][  T222]  ? vprintk_default (kernel/printk/printk.c:2494)
[   12.464910][  T222]  new_sync_write (fs/read_write.c:595)
[   12.464915][  T222]  ? new_sync_read (./include/linux/ioprio.h:41)
[   12.464916][  T222]  ? 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))
[   12.464924][  T222]  vfs_write (fs/read_write.c:687)
[   12.464928][  T222]  ksys_write (fs/read_write.c:739)
[   12.464931][  T222]  ? __ia32_sys_read (fs/read_write.c:723)
[   12.464933][  T222]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   12.464935][  T222]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   12.464939][  T222]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   12.464941][  T222]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   12.464944][  T222]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   12.464946][  T222] RIP: 0033:0x7fe439ab254e
[   12.464950][  T222] 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
[   12.464952][  T222] RSP: 002b:00007ffc9cd87310 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[   12.464955][  T222] RAX: ffffffffffffffda RBX: 00007fe439c33580 RCX: 00007fe439ab254e
[   12.464957][  T222] RDX: 0000000000000021 RSI: 0000563eca380060 RDI: 0000000000000001
[   12.464958][  T222] RBP: 00007ffc9cd87320 R08: 0000000000000000 R09: 0000000000000000
[   12.464959][  T222] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000021
[   12.464960][  T222] R13: 0000000000000021 R14: 0000563eca380060 R15: 00007fe439c33668
| [   13.595356][  T267] softirqs last disabled at (7559): __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767)
| [   13.595359][  T267] Preemption disabled at:
| [   13.595360][  T267] vprintk_emit (kernel/printk/printk.c:2471)
| [   13.595369][  T267] Tainted: [W]=WARN
[   13.595370][  T267] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   13.595372][  T267] Call Trace:
[   13.595376][  T267]  <TASK>
[   13.595378][  T267]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   13.595384][  T267]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   13.595386][  T267]  __might_resched.cold (kernel/sched/core.c:9234)
[   13.595390][  T267]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   13.595394][  T267]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   13.595399][  T267]  __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))
[   13.595401][  T267]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   13.595406][  T267]  ? 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)
[   13.595409][  T267]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   13.595412][  T267]  put_chars (drivers/char/virtio_console.c:1176)
[   13.595415][  T267]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   13.595416][  T267]  ? printk_get_next_message (kernel/printk/printk.c:3072)
[   13.595419][  T267]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   13.595422][  T267]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   13.595426][  T267]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   13.595429][  T267]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   13.595431][  T267]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   13.595435][  T267]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   13.595438][  T267]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   13.595441][  T267]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   13.595445][  T267]  console_emit_next_record (kernel/printk/printk.c:3183)
[   13.595449][  T267]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   13.595453][  T267]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   13.595455][  T267]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   13.595459][  T267]  console_flush_one_record (kernel/printk/printk.c:3268)
[   13.595463][  T267]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   13.595464][  T267]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   13.595469][  T267]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   13.595472][  T267]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   13.595473][  T267]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   13.595475][  T267]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   13.595479][  T267]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   13.595482][  T267]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   13.595487][  T267]  vprintk_emit (kernel/printk/printk.c:2479)
[   13.595491][  T267]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   13.595494][  T267]  ? _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)
[   13.595500][  T267]  devkmsg_emit.constprop.0 (kernel/printk/printk.c:733)
[   13.595504][  T267]  ? vprintk_emit.cold (kernel/printk/printk.c:2449)
[   13.595508][  T267]  ? __kmalloc_noprof (mm/slub.c:5415 mm/slub.c:5439)
[   13.595510][  T267]  ? idr_get_free (??:?)
[   13.595514][  T267]  ? devkmsg_write (./include/linux/slab.h:995 kernel/printk/printk.c:762)
[   13.595517][  T267]  ? _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)
[   13.595519][  T267]  devkmsg_write.cold (kernel/printk/printk.c:796)
[   13.595522][  T267]  ? vprintk_default (kernel/printk/printk.c:2494)
[   13.595524][  T267]  ? handle_pte_fault (mm/memory.c:6558)
[   13.595529][  T267]  ? do_numa_page.isra.0 (mm/memory.c:6319 (discriminator 1))
[   13.595531][  T267]  ? vprintk_default (kernel/printk/printk.c:2494)
[   13.595534][  T267]  new_sync_write (fs/read_write.c:595)
[   13.595539][  T267]  ? new_sync_read (./include/linux/ioprio.h:41)
[   13.595540][  T267]  ? 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))
[   13.595548][  T267]  vfs_write (fs/read_write.c:687)
[   13.595552][  T267]  ksys_write (fs/read_write.c:739)
[   13.595555][  T267]  ? __ia32_sys_read (fs/read_write.c:723)
[   13.595557][  T267]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   13.595560][  T267]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   13.595563][  T267]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   13.595565][  T267]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   13.595568][  T267]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   13.595571][  T267] RIP: 0033:0x7f82d66e754e
[   13.595575][  T267] 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
[   13.595577][  T267] RSP: 002b:00007ffc83003570 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[   13.595580][  T267] RAX: ffffffffffffffda RBX: 00007f82d6868580 RCX: 00007f82d66e754e
[   13.595581][  T267] RDX: 0000000000000021 RSI: 000055c8ce266060 RDI: 0000000000000001
[   13.595582][  T267] RBP: 00007ffc83003580 R08: 0000000000000000 R09: 0000000000000000
[   13.595583][  T267] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000021


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