======================================
| [   10.684951][  T170] softirqs last disabled at (44187): __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767)
| [   10.684954][  T170] Preemption disabled at:
| [   10.684954][  T170] vprintk_emit (kernel/printk/printk.c:2471)
| [   10.684963][  T170] Tainted: [W]=WARN
[   10.684964][  T170] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   10.684966][  T170] Call Trace:
[   10.684967][  T170]  <TASK>
[   10.684969][  T170]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   10.684974][  T170]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   10.684976][  T170]  __might_resched.cold (kernel/sched/core.c:9234)
[   10.684981][  T170]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   10.684985][  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)
[   10.684989][  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))
[   10.684992][  T170]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   10.684997][  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)
[   10.685000][  T170]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   10.685003][  T170]  put_chars (drivers/char/virtio_console.c:1176)
[   10.685005][  T170]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   10.685008][  T170]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   10.685013][  T170]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   10.685019][  T170]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   10.685021][  T170]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   10.685025][  T170]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   10.685028][  T170]  console_emit_next_record (kernel/printk/printk.c:3183)
[   10.685032][  T170]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   10.685036][  T170]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   10.685038][  T170]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   10.685041][  T170]  console_flush_one_record (kernel/printk/printk.c:3268)
[   10.685045][  T170]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   10.685047][  T170]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   10.685051][  T170]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   10.685054][  T170]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   10.685055][  T170]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   10.685057][  T170]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   10.685061][  T170]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   10.685062][  T170]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   10.685065][  T170]  vprintk_emit (kernel/printk/printk.c:2479)
[   10.685069][  T170]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   10.685070][  T170]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   10.685074][  T170]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   10.685075][  T170]  ? fast_dput (./include/linux/rcupdate.h:319 (discriminator 2) ./include/linux/rcupdate.h:880 (discriminator 2) fs/dcache.c:948 (discriminator 2))
[   10.685080][  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
[   10.685084][  T170]  _printk (kernel/printk/printk.c:2504)
[   10.685088][  T170]  ? snapshot_read.cold (user.c:?)
[   10.685091][  T170]  ? __up_write (kernel/locking/rwsem.c:1422 (discriminator 1))
[   10.685094][  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
[   10.685098][  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)
[   10.685102][  T170] init_netconsole (drivers/net/netconsole.c:1286) netconsole
[   10.685106][  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
[   10.685112][  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
[   10.685115][  T170]  do_one_initcall (init/main.c:1357)
[   10.685118][  T170]  ? trace_event_raw_event_initcall_level (./include/trace/events/initcall.h:10)
[   10.685123][  T170]  ? do_init_module (./include/linux/slab.h:991 (discriminator 1) kernel/module/main.c:3105 (discriminator 1))
[   10.685126][  T170]  ? kasan_unpoison (mm/kasan/shadow.c:146 mm/kasan/shadow.c:178)
[   10.685131][  T170]  do_init_module (kernel/module/main.c:3117)
[   10.685134][  T170]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4488)
[   10.685139][  T170]  ? free_module (./include/trace/events/module.h:50 (discriminator 19))
[   10.685141][  T170]  ? kfree (./include/linux/kasan.h:235 mm/slub.c:2748 mm/slub.c:6499 mm/slub.c:6792)
[   10.685145][  T170]  load_module (kernel/module/main.c:3593)
[   10.685151][  T170]  ? layout_and_allocate.isra.0 (kernel/module/main.c:3016)
[   10.685155][  T170]  ? __ia32_sys_fsconfig (??:?)
[   10.685158][  T170]  ? ovl_real_file (fs/overlayfs/file.c:195)
[   10.685161][  T170]  ? backing_file_read_iter (fs/backing-file.c:211)
[   10.685165][  T170]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   10.685169][  T170]  init_module_from_file (kernel/module/main.c:3790)
[   10.685172][  T170]  ? __do_sys_init_module (kernel/module/main.c:3664)
[   10.685180][  T170]  ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[   10.685183][  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)
[   10.685185][  T170]  idempotent_init_module (kernel/module/main.c:3802)
[   10.685188][  T170]  ? init_module_from_file (kernel/module/main.c:3791)
[   10.685194][  T170]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   10.685196][  T170]  ? cap_capable (./include/trace/events/capability.h:26 (discriminator 22) security/commoncap.c:130 (discriminator 22))
[   10.685202][  T170]  __x64_sys_finit_module (kernel/module/main.c:3828 kernel/module/main.c:3812 kernel/module/main.c:3812)
[   10.685204][  T170]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[   10.685208][  T170]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   10.685210][  T170]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   10.685213][  T170]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   10.685215][  T170] RIP: 0033:0x7f452689337d
[   10.685219][  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
[   10.685220][  T170] RSP: 002b:00007ffcc8112e28 EFLAGS: 00000246 ORIG_RAX: 0000000000000139
[   10.685223][  T170] RAX: ffffffffffffffda RBX: 000055a50a681700 RCX: 00007f452689337d
[   10.685224][  T170] RDX: 0000000000000000 RSI: 000055a4d8085ffd RDI: 0000000000000005
[   10.685225][  T170] RBP: 00007ffcc8112ec0 R08: 0000000000000000 R09: 0000000000000000
[   10.685226][  T170] R10: 0000000000000000 R11: 0000000000000246 R12: 000055a4d8085ffd
[   10.685227][  T170] R13: 000055a50a681810 R14: 0000000000040000 R15: 0000000000000000
| [   14.154721][  T157] softirqs last disabled at (145436): 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))
| [   14.154724][  T157] Preemption disabled at:
| [   14.154724][  T157] vprintk_emit (kernel/printk/printk.c:2471)
| [   14.154734][  T157] Tainted: [W]=WARN
[   14.154735][  T157] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   14.154737][  T157] Call Trace:
[   14.154738][  T157]  <TASK>
[   14.154740][  T157]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   14.154745][  T157]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   14.154747][  T157]  __might_resched.cold (kernel/sched/core.c:9234)
[   14.154752][  T157]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   14.154756][  T157]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   14.154761][  T157]  __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))
[   14.154763][  T157]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   14.154769][  T157]  ? 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)
[   14.154772][  T157]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   14.154775][  T157]  put_chars (drivers/char/virtio_console.c:1176)
[   14.154778][  T157]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   14.154780][  T157]  ? printk_get_next_message (kernel/printk/printk.c:3072)
[   14.154783][  T157]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   14.154786][  T157]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   14.154790][  T157]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   14.154793][  T157]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   14.154794][  T157]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   14.154799][  T157]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   14.154802][  T157]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   14.154805][  T157]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   14.154809][  T157]  console_emit_next_record (kernel/printk/printk.c:3183)
[   14.154812][  T157]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   14.154817][  T157]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   14.154819][  T157]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   14.154823][  T157]  console_flush_one_record (kernel/printk/printk.c:3268)
[   14.154827][  T157]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   14.154829][  T157]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   14.154834][  T157]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   14.154836][  T157]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   14.154838][  T157]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   14.154840][  T157]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   14.154844][  T157]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   14.154845][  T157]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   14.154849][  T157]  vprintk_emit (kernel/printk/printk.c:2479)
[   14.154852][  T157]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   14.154855][  T157]  ? _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)
[   14.154861][  T157]  devkmsg_emit.constprop.0 (kernel/printk/printk.c:733)
[   14.154865][  T157]  ? vprintk_emit.cold (kernel/printk/printk.c:2449)
[   14.154870][  T157]  ? __kmalloc_noprof (mm/slub.c:5415 mm/slub.c:5439)
[   14.154871][  T157]  ? idr_get_free (??:?)
[   14.154875][  T157]  ? devkmsg_write (./include/linux/slab.h:995 kernel/printk/printk.c:762)
[   14.154878][  T157]  ? _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)
[   14.154881][  T157]  devkmsg_write.cold (kernel/printk/printk.c:796)
[   14.154884][  T157]  ? vprintk_default (kernel/printk/printk.c:2494)
[   14.154886][  T157]  ? handle_pte_fault (mm/memory.c:6582)
[   14.154891][  T157]  ? do_numa_page.isra.0 (mm/memory.c:6319 (discriminator 1))
[   14.154893][  T157]  ? vprintk_default (kernel/printk/printk.c:2494)
[   14.154895][  T157]  new_sync_write (fs/read_write.c:595)
[   14.154900][  T157]  ? new_sync_read (./include/linux/ioprio.h:41)
[   14.154902][  T157]  ? 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))
[   14.154911][  T157]  vfs_write (fs/read_write.c:687)
[   14.154915][  T157]  ksys_write (fs/read_write.c:739)
[   14.154918][  T157]  ? __ia32_sys_read (fs/read_write.c:723)
[   14.154920][  T157]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   14.154922][  T157]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   14.154926][  T157]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   14.154928][  T157]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   14.154932][  T157]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   14.154934][  T157] RIP: 0033:0x7fbc3d27a54e
[   14.154938][  T157] 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
[   14.154940][  T157] RSP: 002b:00007ffe11461630 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[   14.154943][  T157] RAX: ffffffffffffffda RBX: 00007fbc3d3fb580 RCX: 00007fbc3d27a54e
[   14.154944][  T157] RDX: 0000000000000023 RSI: 0000560caf025790 RDI: 0000000000000001
[   14.154945][  T157] RBP: 00007ffe11461640 R08: 0000000000000000 R09: 0000000000000000
[   14.154946][  T157] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000023
[   14.154947][  T157] R13: 0000000000000023 R14: 0000560caf025790 R15: 0000000000000000
| [   15.789193][  T157] softirqs last disabled at (177542): 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))
| [   15.789195][  T157] Preemption disabled at:
| [   15.789196][  T157] vprintk_emit (kernel/printk/printk.c:2471)
| [   15.789206][  T157] Tainted: [W]=WARN
[   15.789207][  T157] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   15.789209][  T157] Call Trace:
[   15.789211][  T157]  <TASK>
[   15.789213][  T157]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   15.789218][  T157]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   15.789220][  T157]  __might_resched.cold (kernel/sched/core.c:9234)
[   15.789225][  T157]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   15.789229][  T157]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   15.789234][  T157]  __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))
[   15.789236][  T157]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   15.789242][  T157]  ? 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)
[   15.789245][  T157]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   15.789248][  T157]  put_chars (drivers/char/virtio_console.c:1176)
[   15.789251][  T157]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   15.789258][  T157]  ? printk_get_next_message (kernel/printk/printk.c:3072)
[   15.789261][  T157]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   15.789264][  T157]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   15.789269][  T157]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   15.789272][  T157]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   15.789273][  T157]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   15.789281][  T157]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   15.789284][  T157]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   15.789287][  T157]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   15.789291][  T157]  console_emit_next_record (kernel/printk/printk.c:3183)
[   15.789294][  T157]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   15.789299][  T157]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   15.789301][  T157]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   15.789305][  T157]  console_flush_one_record (kernel/printk/printk.c:3268)
[   15.789309][  T157]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   15.789311][  T157]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   15.789316][  T157]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   15.789318][  T157]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   15.789320][  T157]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   15.789322][  T157]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   15.789326][  T157]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   15.789327][  T157]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   15.789331][  T157]  vprintk_emit (kernel/printk/printk.c:2479)
[   15.789334][  T157]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   15.789337][  T157]  ? _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)
[   15.789343][  T157]  devkmsg_emit.constprop.0 (kernel/printk/printk.c:733)
[   15.789347][  T157]  ? vprintk_emit.cold (kernel/printk/printk.c:2449)
[   15.789351][  T157]  ? __kmalloc_noprof (mm/slub.c:5415 mm/slub.c:5439)
[   15.789353][  T157]  ? idr_get_free (??:?)
[   15.789357][  T157]  ? devkmsg_write (./include/linux/slab.h:995 kernel/printk/printk.c:762)
[   15.789360][  T157]  ? _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)
[   15.789363][  T157]  devkmsg_write.cold (kernel/printk/printk.c:796)
[   15.789366][  T157]  ? vprintk_default (kernel/printk/printk.c:2494)
[   15.789368][  T157]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   15.789370][  T157]  ? vfs_lock_file (./include/linux/fs.h:1348)
[   15.789374][  T157]  ? vprintk_default (kernel/printk/printk.c:2494)
[   15.789377][  T157]  new_sync_write (fs/read_write.c:595)
[   15.789382][  T157]  ? new_sync_read (./include/linux/ioprio.h:41)
[   15.789383][  T157]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   15.789392][  T157]  vfs_write (fs/read_write.c:687)
[   15.789396][  T157]  ksys_write (fs/read_write.c:739)
[   15.789399][  T157]  ? __ia32_sys_read (fs/read_write.c:723)
[   15.789401][  T157]  ? 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)
[   15.789403][  T157]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   15.789407][  T157]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   15.789409][  T157]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   15.789412][  T157]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   15.789415][  T157] RIP: 0033:0x7fbc3d27a54e
[   15.789419][  T157] 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
[   15.789421][  T157] RSP: 002b:00007ffe11461630 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[   15.789424][  T157] RAX: ffffffffffffffda RBX: 00007fbc3d3fb580 RCX: 00007fbc3d27a54e
[   15.789426][  T157] RDX: 0000000000000023 RSI: 0000560caf025790 RDI: 0000000000000001
[   15.789427][  T157] RBP: 00007ffe11461640 R08: 0000000000000000 R09: 0000000000000000
[   15.789428][  T157] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000023
[   15.789429][  T157] R13: 0000000000000023 R14: 0000560caf025790 R15: 0000000000000000
| [   17.436348][  T157] softirqs last disabled at (208587): __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767)
| [   17.436351][  T157] Preemption disabled at:
| [   17.436351][  T157] vprintk_emit (kernel/printk/printk.c:2471)
| [   17.436361][  T157] Tainted: [W]=WARN
[   17.436362][  T157] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   17.436364][  T157] Call Trace:
[   17.436366][  T157]  <TASK>
[   17.436368][  T157]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   17.436373][  T157]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   17.436375][  T157]  __might_resched.cold (kernel/sched/core.c:9234)
[   17.436380][  T157]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   17.436383][  T157]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   17.436388][  T157]  __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))
[   17.436390][  T157]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   17.436396][  T157]  ? 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)
[   17.436398][  T157]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   17.436402][  T157]  put_chars (drivers/char/virtio_console.c:1176)
[   17.436404][  T157]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   17.436406][  T157]  ? printk_get_next_message (kernel/printk/printk.c:3072)
[   17.436409][  T157]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   17.436412][  T157]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   17.436416][  T157]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   17.436419][  T157]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   17.436420][  T157]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   17.436424][  T157]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   17.436427][  T157]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   17.436430][  T157]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   17.436434][  T157]  console_emit_next_record (kernel/printk/printk.c:3183)
[   17.436437][  T157]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   17.436441][  T157]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   17.436443][  T157]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   17.436447][  T157]  console_flush_one_record (kernel/printk/printk.c:3268)
[   17.436451][  T157]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   17.436452][  T157]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   17.436457][  T157]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   17.436460][  T157]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   17.436461][  T157]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   17.436463][  T157]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   17.436467][  T157]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   17.436468][  T157]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   17.436471][  T157]  vprintk_emit (kernel/printk/printk.c:2479)
[   17.436474][  T157]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   17.436477][  T157]  ? _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)
[   17.436483][  T157]  devkmsg_emit.constprop.0 (kernel/printk/printk.c:733)
[   17.436487][  T157]  ? vprintk_emit.cold (kernel/printk/printk.c:2449)
[   17.436491][  T157]  ? __kmalloc_noprof (mm/slub.c:5415 mm/slub.c:5439)
[   17.436492][  T157]  ? idr_get_free (??:?)
[   17.436496][  T157]  ? devkmsg_write (./include/linux/slab.h:995 kernel/printk/printk.c:762)
[   17.436499][  T157]  ? _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)
[   17.436502][  T157]  devkmsg_write.cold (kernel/printk/printk.c:796)
[   17.436505][  T157]  ? vprintk_default (kernel/printk/printk.c:2494)
[   17.436506][  T157]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   17.436508][  T157]  ? vfs_lock_file (./include/linux/fs.h:1348)
[   17.436513][  T157]  ? vprintk_default (kernel/printk/printk.c:2494)
[   17.436515][  T157]  new_sync_write (fs/read_write.c:595)
[   17.436520][  T157]  ? new_sync_read (./include/linux/ioprio.h:41)
[   17.436521][  T157]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   17.436529][  T157]  vfs_write (fs/read_write.c:687)
[   17.436533][  T157]  ksys_write (fs/read_write.c:739)
[   17.436536][  T157]  ? __ia32_sys_read (fs/read_write.c:723)
[   17.436537][  T157]  ? 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)
[   17.436540][  T157]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   17.436543][  T157]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   17.436545][  T157]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   17.436548][  T157]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   17.436551][  T157] RIP: 0033:0x7fbc3d27a54e
[   17.436555][  T157] 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
[   17.436557][  T157] RSP: 002b:00007ffe11461630 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[   17.436560][  T157] RAX: ffffffffffffffda RBX: 00007fbc3d3fb580 RCX: 00007fbc3d27a54e
[   17.436561][  T157] RDX: 0000000000000023 RSI: 0000560caf025790 RDI: 0000000000000001
[   17.436562][  T157] RBP: 00007ffe11461640 R08: 0000000000000000 R09: 0000000000000000
[   17.436563][  T157] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000023


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