======================================
| [    8.747708][  T169] softirqs last disabled at (26675): __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767)
| [    8.747711][  T169] Preemption disabled at:
| [    8.747712][  T169] vprintk_emit (kernel/printk/printk.c:2471)
| [    8.747720][  T169] Tainted: [W]=WARN
[    8.747720][  T169] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[    8.747722][  T169] Call Trace:
[    8.747723][  T169]  <TASK>
[    8.747725][  T169]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[    8.747730][  T169]  ? vprintk_emit (kernel/printk/printk.c:2471)
[    8.747732][  T169]  __might_resched.cold (kernel/sched/core.c:9234)
[    8.747737][  T169]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[    8.747740][  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)
[    8.747744][  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))
[    8.747746][  T169]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[    8.747752][  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)
[    8.747754][  T169]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[    8.747757][  T169]  put_chars (drivers/char/virtio_console.c:1176)
[    8.747760][  T169]  ? __send_to_port (drivers/char/virtio_console.c:654)
[    8.747763][  T169]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[    8.747768][  T169]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[    8.747774][  T169]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[    8.747776][  T169]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[    8.747779][  T169]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[    8.747783][  T169]  console_emit_next_record (kernel/printk/printk.c:3183)
[    8.747787][  T169]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[    8.747791][  T169]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[    8.747793][  T169]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[    8.747796][  T169]  console_flush_one_record (kernel/printk/printk.c:3268)
[    8.747800][  T169]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[    8.747802][  T169]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[    8.747807][  T169]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[    8.747809][  T169]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[    8.747811][  T169]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[    8.747813][  T169]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[    8.747816][  T169]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[    8.747817][  T169]  ? vprintk_emit (kernel/printk/printk.c:2478)
[    8.747820][  T169]  vprintk_emit (kernel/printk/printk.c:2479)
[    8.747824][  T169]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[    8.747825][  T169]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[    8.747829][  T169]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[    8.747830][  T169]  ? fast_dput (./include/linux/rcupdate.h:319 (discriminator 2) ./include/linux/rcupdate.h:880 (discriminator 2) fs/dcache.c:948 (discriminator 2))
[    8.747835][  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
[    8.747839][  T169]  _printk (kernel/printk/printk.c:2504)
[    8.747842][  T169]  ? snapshot_read.cold (user.c:?)
[    8.747845][  T169]  ? __up_write (kernel/locking/rwsem.c:1422 (discriminator 1))
[    8.747848][  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
[    8.747852][  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)
[    8.747857][  T169] init_netconsole (drivers/net/netconsole.c:1286) netconsole
[    8.747860][  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
[    8.747867][  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
[    8.747870][  T169]  do_one_initcall (init/main.c:1357)
[    8.747873][  T169]  ? trace_event_raw_event_initcall_level (./include/trace/events/initcall.h:10)
[    8.747878][  T169]  ? do_init_module (./include/linux/slab.h:991 (discriminator 1) kernel/module/main.c:3105 (discriminator 1))
[    8.747880][  T169]  ? kasan_unpoison (mm/kasan/shadow.c:146 mm/kasan/shadow.c:178)
[    8.747886][  T169]  do_init_module (kernel/module/main.c:3117)
[    8.747889][  T169]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4488)
[    8.747893][  T169]  ? free_module (./include/trace/events/module.h:50 (discriminator 19))
[    8.747896][  T169]  ? kfree (./include/linux/kasan.h:235 mm/slub.c:2748 mm/slub.c:6499 mm/slub.c:6792)
[    8.747900][  T169]  load_module (kernel/module/main.c:3593)
[    8.747907][  T169]  ? layout_and_allocate.isra.0 (kernel/module/main.c:3016)
[    8.747910][  T169]  ? __ia32_sys_fsconfig (??:?)
[    8.747914][  T169]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[    8.747916][  T169]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[    8.747920][  T169]  init_module_from_file (kernel/module/main.c:3790)
[    8.747924][  T169]  ? __do_sys_init_module (kernel/module/main.c:3664)
[    8.747931][  T169]  ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[    8.747935][  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)
[    8.747937][  T169]  idempotent_init_module (kernel/module/main.c:3802)
[    8.747941][  T169]  ? init_module_from_file (kernel/module/main.c:3791)
[    8.747947][  T169]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[    8.747949][  T169]  ? cap_capable (./include/trace/events/capability.h:26 (discriminator 22) security/commoncap.c:130 (discriminator 22))
[    8.747954][  T169]  __x64_sys_finit_module (kernel/module/main.c:3828 kernel/module/main.c:3812 kernel/module/main.c:3812)
[    8.747956][  T169]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[    8.747960][  T169]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[    8.747962][  T169]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[    8.747965][  T169]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[    8.747967][  T169] RIP: 0033:0x7f1cd2f8937d
[    8.747970][  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
[    8.747972][  T169] RSP: 002b:00007ffeb27178e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000139
[    8.747975][  T169] RAX: ffffffffffffffda RBX: 000055d54a94d700 RCX: 00007f1cd2f8937d
[    8.747976][  T169] RDX: 0000000000000000 RSI: 000055d511843ffd RDI: 0000000000000005
[    8.747977][  T169] RBP: 00007ffeb2717980 R08: 0000000000000000 R09: 0000000000000000
[    8.747977][  T169] R10: 0000000000000000 R11: 0000000000000246 R12: 000055d511843ffd
[    8.747978][  T169] R13: 000055d54a94d810 R14: 0000000000040000 R15: 0000000000000000
| [   10.806754][  T220] softirqs last disabled at (15125): __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767)
| [   10.806757][  T220] Preemption disabled at:
| [   10.806758][  T220] vprintk_emit (kernel/printk/printk.c:2471)
| [   10.806767][  T220] Tainted: [W]=WARN
[   10.806768][  T220] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   10.806769][  T220] Call Trace:
[   10.806771][  T220]  <TASK>
[   10.806773][  T220]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   10.806778][  T220]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   10.806780][  T220]  __might_resched.cold (kernel/sched/core.c:9234)
[   10.806785][  T220]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   10.806788][  T220]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   10.806793][  T220]  __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))
[   10.806795][  T220]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   10.806801][  T220]  ? 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)
[   10.806804][  T220]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   10.806807][  T220]  put_chars (drivers/char/virtio_console.c:1176)
[   10.806810][  T220]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   10.806811][  T220]  ? printk_get_next_message (kernel/printk/printk.c:3072)
[   10.806815][  T220]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   10.806818][  T220]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   10.806822][  T220]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   10.806825][  T220]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   10.806826][  T220]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   10.806830][  T220]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   10.806833][  T220]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   10.806836][  T220]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   10.806840][  T220]  console_emit_next_record (kernel/printk/printk.c:3183)
[   10.806844][  T220]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   10.806848][  T220]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   10.806850][  T220]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   10.806854][  T220]  console_flush_one_record (kernel/printk/printk.c:3268)
[   10.806858][  T220]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   10.806859][  T220]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   10.806864][  T220]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   10.806867][  T220]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   10.806868][  T220]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   10.806871][  T220]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   10.806874][  T220]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   10.806875][  T220]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   10.806879][  T220]  vprintk_emit (kernel/printk/printk.c:2479)
[   10.806882][  T220]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   10.806885][  T220]  ? _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)
[   10.806891][  T220]  devkmsg_emit.constprop.0 (kernel/printk/printk.c:733)
[   10.806895][  T220]  ? vprintk_emit.cold (kernel/printk/printk.c:2449)
[   10.806899][  T220]  ? __kmalloc_noprof (mm/slub.c:5415 mm/slub.c:5439)
[   10.806901][  T220]  ? idr_get_free (??:?)
[   10.806904][  T220]  ? devkmsg_write (./include/linux/slab.h:995 kernel/printk/printk.c:762)
[   10.806907][  T220]  ? _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)
[   10.806910][  T220]  devkmsg_write.cold (kernel/printk/printk.c:796)
[   10.806913][  T220]  ? vprintk_default (kernel/printk/printk.c:2494)
[   10.806915][  T220]  ? handle_pte_fault (mm/memory.c:6558)
[   10.806919][  T220]  ? do_numa_page.isra.0 (mm/memory.c:6319 (discriminator 1))
[   10.806922][  T220]  ? vprintk_default (kernel/printk/printk.c:2494)
[   10.806924][  T220]  new_sync_write (fs/read_write.c:595)
[   10.806929][  T220]  ? new_sync_read (./include/linux/ioprio.h:41)
[   10.806930][  T220]  ? 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))
[   10.806939][  T220]  vfs_write (fs/read_write.c:687)
[   10.806943][  T220]  ksys_write (fs/read_write.c:739)
[   10.806946][  T220]  ? __ia32_sys_read (fs/read_write.c:723)
[   10.806948][  T220]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   10.806950][  T220]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   10.806953][  T220]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   10.806956][  T220]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   10.806959][  T220]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   10.806961][  T220] RIP: 0033:0x7fe2f688f54e
[   10.806965][  T220] 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
[   10.806967][  T220] RSP: 002b:00007ffc2bc95810 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[   10.806970][  T220] RAX: ffffffffffffffda RBX: 00007fe2f6a10580 RCX: 00007fe2f688f54e
[   10.806971][  T220] RDX: 0000000000000021 RSI: 0000557022dad060 RDI: 0000000000000001
[   10.806972][  T220] RBP: 00007ffc2bc95820 R08: 0000000000000000 R09: 0000000000000000
[   10.806973][  T220] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000021
[   10.806974][  T220] R13: 0000000000000021 R14: 0000557022dad060 R15: 00007fe2f6a10668
| [   12.017433][  T269] softirqs last disabled at (11523): __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767)
| [   12.017435][  T269] Preemption disabled at:
| [   12.017436][  T269] vprintk_emit (kernel/printk/printk.c:2471)
| [   12.017444][  T269] Tainted: [W]=WARN
[   12.017445][  T269] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   12.017447][  T269] Call Trace:
[   12.017449][  T269]  <TASK>
[   12.017450][  T269]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   12.017456][  T269]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   12.017458][  T269]  __might_resched.cold (kernel/sched/core.c:9234)
[   12.017463][  T269]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   12.017466][  T269]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   12.017471][  T269]  __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))
[   12.017473][  T269]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   12.017485][  T269]  ? 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)
[   12.017488][  T269]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   12.017491][  T269]  put_chars (drivers/char/virtio_console.c:1176)
[   12.017494][  T269]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   12.017495][  T269]  ? printk_get_next_message (kernel/printk/printk.c:3072)
[   12.017498][  T269]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   12.017501][  T269]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   12.017505][  T269]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   12.017508][  T269]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   12.017510][  T269]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   12.017514][  T269]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   12.017516][  T269]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   12.017519][  T269]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   12.017523][  T269]  console_emit_next_record (kernel/printk/printk.c:3183)
[   12.017526][  T269]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   12.017530][  T269]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   12.017532][  T269]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   12.017536][  T269]  console_flush_one_record (kernel/printk/printk.c:3268)
[   12.017540][  T269]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   12.017541][  T269]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   12.017546][  T269]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   12.017549][  T269]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   12.017550][  T269]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   12.017552][  T269]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   12.017556][  T269]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   12.017557][  T269]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   12.017560][  T269]  vprintk_emit (kernel/printk/printk.c:2479)
[   12.017564][  T269]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   12.017567][  T269]  ? _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)
[   12.017572][  T269]  devkmsg_emit.constprop.0 (kernel/printk/printk.c:733)
[   12.017576][  T269]  ? vprintk_emit.cold (kernel/printk/printk.c:2449)
[   12.017580][  T269]  ? __kmalloc_noprof (mm/slub.c:5415 mm/slub.c:5439)
[   12.017581][  T269]  ? idr_get_free (??:?)
[   12.017585][  T269]  ? devkmsg_write (./include/linux/slab.h:995 kernel/printk/printk.c:762)
[   12.017588][  T269]  ? _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)
[   12.017591][  T269]  devkmsg_write.cold (kernel/printk/printk.c:796)
[   12.017594][  T269]  ? vprintk_default (kernel/printk/printk.c:2494)
[   12.017595][  T269]  ? handle_pte_fault (mm/memory.c:6558)
[   12.017600][  T269]  ? do_numa_page.isra.0 (mm/memory.c:6319 (discriminator 1))
[   12.017602][  T269]  ? vprintk_default (kernel/printk/printk.c:2494)
[   12.017605][  T269]  new_sync_write (fs/read_write.c:595)
[   12.017609][  T269]  ? new_sync_read (./include/linux/ioprio.h:41)
[   12.017611][  T269]  ? 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))
[   12.017619][  T269]  vfs_write (fs/read_write.c:687)
[   12.017623][  T269]  ksys_write (fs/read_write.c:739)
[   12.017625][  T269]  ? __ia32_sys_read (fs/read_write.c:723)
[   12.017628][  T269]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   12.017630][  T269]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   12.017633][  T269]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   12.017635][  T269]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   12.017638][  T269]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   12.017641][  T269] RIP: 0033:0x7f451ce0654e
[   12.017644][  T269] 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
[   12.017646][  T269] RSP: 002b:00007ffee97e0410 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[   12.017649][  T269] RAX: ffffffffffffffda RBX: 00007f451cf87580 RCX: 00007f451ce0654e
[   12.017651][  T269] RDX: 0000000000000021 RSI: 000056265ccf3060 RDI: 0000000000000001
[   12.017652][  T269] RBP: 00007ffee97e0420 R08: 0000000000000000 R09: 0000000000000000
[   12.017653][  T269] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000021


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