======================================
| [    9.554787][  T170] softirqs last disabled at (30383): __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767)
| [    9.554790][  T170] Preemption disabled at:
| [    9.554790][  T170] vprintk_emit (kernel/printk/printk.c:2471)
| [    9.554799][  T170] Tainted: [W]=WARN
[    9.554800][  T170] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[    9.554801][  T170] Call Trace:
[    9.554803][  T170]  <TASK>
[    9.554805][  T170]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[    9.554810][  T170]  ? vprintk_emit (kernel/printk/printk.c:2471)
[    9.554812][  T170]  __might_resched.cold (kernel/sched/core.c:9234)
[    9.554816][  T170]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[    9.554820][  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)
[    9.554825][  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))
[    9.554827][  T170]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[    9.554832][  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)
[    9.554835][  T170]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[    9.554838][  T170]  put_chars (drivers/char/virtio_console.c:1176)
[    9.554841][  T170]  ? __send_to_port (drivers/char/virtio_console.c:654)
[    9.554844][  T170]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[    9.554849][  T170]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[    9.554856][  T170]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[    9.554858][  T170]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[    9.554861][  T170]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[    9.554865][  T170]  console_emit_next_record (kernel/printk/printk.c:3183)
[    9.554869][  T170]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[    9.554873][  T170]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[    9.554875][  T170]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[    9.554878][  T170]  console_flush_one_record (kernel/printk/printk.c:3268)
[    9.554882][  T170]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[    9.554884][  T170]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[    9.554889][  T170]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[    9.554891][  T170]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[    9.554892][  T170]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[    9.554895][  T170]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[    9.554898][  T170]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[    9.554900][  T170]  ? vprintk_emit (kernel/printk/printk.c:2478)
[    9.554903][  T170]  vprintk_emit (kernel/printk/printk.c:2479)
[    9.554906][  T170]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[    9.554908][  T170]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[    9.554912][  T170]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[    9.554913][  T170]  ? fast_dput (./include/linux/rcupdate.h:319 (discriminator 2) ./include/linux/rcupdate.h:880 (discriminator 2) fs/dcache.c:948 (discriminator 2))
[    9.554918][  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
[    9.554922][  T170]  _printk (kernel/printk/printk.c:2504)
[    9.554925][  T170]  ? snapshot_read.cold (user.c:?)
[    9.554928][  T170]  ? __up_write (kernel/locking/rwsem.c:1422 (discriminator 1))
[    9.554932][  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
[    9.554936][  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)
[    9.554940][  T170] init_netconsole (drivers/net/netconsole.c:1286) netconsole
[    9.554944][  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
[    9.554950][  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
[    9.554953][  T170]  do_one_initcall (init/main.c:1357)
[    9.554956][  T170]  ? trace_event_raw_event_initcall_level (./include/trace/events/initcall.h:10)
[    9.554961][  T170]  ? do_init_module (./include/linux/slab.h:991 (discriminator 1) kernel/module/main.c:3105 (discriminator 1))
[    9.554964][  T170]  ? kasan_unpoison (mm/kasan/shadow.c:146 mm/kasan/shadow.c:178)
[    9.554969][  T170]  do_init_module (kernel/module/main.c:3117)
[    9.554972][  T170]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4488)
[    9.554977][  T170]  ? free_module (./include/trace/events/module.h:50 (discriminator 19))
[    9.554980][  T170]  ? kfree (./include/linux/kasan.h:235 mm/slub.c:2748 mm/slub.c:6499 mm/slub.c:6792)
[    9.554983][  T170]  load_module (kernel/module/main.c:3593)
[    9.554990][  T170]  ? layout_and_allocate.isra.0 (kernel/module/main.c:3016)
[    9.554993][  T170]  ? __ia32_sys_fsconfig (??:?)
[    9.554997][  T170]  ? ovl_real_file (fs/overlayfs/file.c:195)
[    9.555000][  T170]  ? backing_file_read_iter (fs/backing-file.c:211)
[    9.555004][  T170]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[    9.555008][  T170]  init_module_from_file (kernel/module/main.c:3790)
[    9.555012][  T170]  ? __do_sys_init_module (kernel/module/main.c:3664)
[    9.555019][  T170]  ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[    9.555023][  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)
[    9.555026][  T170]  idempotent_init_module (kernel/module/main.c:3802)
[    9.555029][  T170]  ? init_module_from_file (kernel/module/main.c:3791)
[    9.555035][  T170]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[    9.555037][  T170]  ? cap_capable (./include/trace/events/capability.h:26 (discriminator 22) security/commoncap.c:130 (discriminator 22))
[    9.555043][  T170]  __x64_sys_finit_module (kernel/module/main.c:3828 kernel/module/main.c:3812 kernel/module/main.c:3812)
[    9.555044][  T170]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[    9.555049][  T170]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[    9.555051][  T170]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[    9.555053][  T170]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[    9.555055][  T170] RIP: 0033:0x7f537db0037d
[    9.555059][  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
[    9.555060][  T170] RSP: 002b:00007ffd77b8b488 EFLAGS: 00000246 ORIG_RAX: 0000000000000139
[    9.555063][  T170] RAX: ffffffffffffffda RBX: 0000564d64d37700 RCX: 00007f537db0037d
[    9.555064][  T170] RDX: 0000000000000000 RSI: 0000564d3ceefffd RDI: 0000000000000005
[    9.555065][  T170] RBP: 00007ffd77b8b520 R08: 0000000000000000 R09: 0000000000000000
[    9.555066][  T170] R10: 0000000000000000 R11: 0000000000000246 R12: 0000564d3ceefffd
[    9.555067][  T170] R13: 0000564d64d37810 R14: 0000000000040000 R15: 0000000000000000
| [   12.869127][  T157] softirqs last disabled at (148368): 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))
| [   12.869129][  T157] Preemption disabled at:
| [   12.869130][  T157] vprintk_emit (kernel/printk/printk.c:2471)
| [   12.869139][  T157] Tainted: [W]=WARN
[   12.869140][  T157] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   12.869142][  T157] Call Trace:
[   12.869144][  T157]  <TASK>
[   12.869146][  T157]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   12.869151][  T157]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   12.869153][  T157]  __might_resched.cold (kernel/sched/core.c:9234)
[   12.869158][  T157]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   12.869161][  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)
[   12.869166][  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))
[   12.869168][  T157]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   12.869174][  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)
[   12.869177][  T157]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   12.869180][  T157]  put_chars (drivers/char/virtio_console.c:1176)
[   12.869183][  T157]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   12.869185][  T157]  ? printk_get_next_message (kernel/printk/printk.c:3072)
[   12.869188][  T157]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   12.869191][  T157]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   12.869196][  T157]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   12.869199][  T157]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   12.869200][  T157]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   12.869204][  T157]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   12.869208][  T157]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   12.869211][  T157]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   12.869215][  T157]  console_emit_next_record (kernel/printk/printk.c:3183)
[   12.869218][  T157]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   12.869223][  T157]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   12.869225][  T157]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   12.869228][  T157]  console_flush_one_record (kernel/printk/printk.c:3268)
[   12.869232][  T157]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   12.869234][  T157]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   12.869239][  T157]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   12.869242][  T157]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   12.869244][  T157]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   12.869246][  T157]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   12.869250][  T157]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   12.869251][  T157]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   12.869255][  T157]  vprintk_emit (kernel/printk/printk.c:2479)
[   12.869258][  T157]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   12.869261][  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)
[   12.869267][  T157]  devkmsg_emit.constprop.0 (kernel/printk/printk.c:733)
[   12.869271][  T157]  ? vprintk_emit.cold (kernel/printk/printk.c:2449)
[   12.869275][  T157]  ? __kmalloc_noprof (mm/slub.c:5415 mm/slub.c:5439)
[   12.869277][  T157]  ? idr_get_free (??:?)
[   12.869281][  T157]  ? devkmsg_write (./include/linux/slab.h:995 kernel/printk/printk.c:762)
[   12.869285][  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)
[   12.869287][  T157]  devkmsg_write.cold (kernel/printk/printk.c:796)
[   12.869290][  T157]  ? vprintk_default (kernel/printk/printk.c:2494)
[   12.869292][  T157]  ? handle_pte_fault (mm/memory.c:6582)
[   12.869297][  T157]  ? do_numa_page.isra.0 (mm/memory.c:6319 (discriminator 1))
[   12.869300][  T157]  ? vprintk_default (kernel/printk/printk.c:2494)
[   12.869305][  T157]  new_sync_write (fs/read_write.c:595)
[   12.869311][  T157]  ? new_sync_read (./include/linux/ioprio.h:41)
[   12.869312][  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))
[   12.869321][  T157]  vfs_write (fs/read_write.c:687)
[   12.869325][  T157]  ksys_write (fs/read_write.c:739)
[   12.869328][  T157]  ? __ia32_sys_read (fs/read_write.c:723)
[   12.869331][  T157]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   12.869333][  T157]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   12.869337][  T157]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   12.869339][  T157]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   12.869342][  T157]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   12.869345][  T157] RIP: 0033:0x7f60876b354e
[   12.869349][  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
[   12.869350][  T157] RSP: 002b:00007fff39f08580 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[   12.869353][  T157] RAX: ffffffffffffffda RBX: 00007f6087834580 RCX: 00007f60876b354e
[   12.869355][  T157] RDX: 0000000000000023 RSI: 0000556819a6b790 RDI: 0000000000000001
[   12.869356][  T157] RBP: 00007fff39f08590 R08: 0000000000000000 R09: 0000000000000000
[   12.869357][  T157] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000023
[   12.869358][  T157] R13: 0000000000000023 R14: 0000556819a6b790 R15: 0000000000000000
| [   14.400608][  T157] softirqs last disabled at (169730): 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))
| [   14.400610][  T157] Preemption disabled at:
| [   14.400611][  T157] vprintk_emit (kernel/printk/printk.c:2471)
| [   14.400619][  T157] Tainted: [W]=WARN
[   14.400620][  T157] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   14.400622][  T157] Call Trace:
[   14.400624][  T157]  <TASK>
[   14.400625][  T157]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   14.400631][  T157]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   14.400633][  T157]  __might_resched.cold (kernel/sched/core.c:9234)
[   14.400638][  T157]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   14.400641][  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)
[   14.400646][  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))
[   14.400649][  T157]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   14.400655][  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)
[   14.400663][  T157]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   14.400669][  T157]  put_chars (drivers/char/virtio_console.c:1176)
[   14.400672][  T157]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   14.400674][  T157]  ? printk_get_next_message (kernel/printk/printk.c:3072)
[   14.400678][  T157]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   14.400681][  T157]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   14.400685][  T157]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   14.400688][  T157]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   14.400689][  T157]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   14.400694][  T157]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   14.400697][  T157]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   14.400700][  T157]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   14.400704][  T157]  console_emit_next_record (kernel/printk/printk.c:3183)
[   14.400708][  T157]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   14.400713][  T157]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   14.400715][  T157]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   14.400719][  T157]  console_flush_one_record (kernel/printk/printk.c:3268)
[   14.400723][  T157]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   14.400725][  T157]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   14.400730][  T157]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   14.400733][  T157]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   14.400734][  T157]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   14.400737][  T157]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   14.400740][  T157]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   14.400741][  T157]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   14.400745][  T157]  vprintk_emit (kernel/printk/printk.c:2479)
[   14.400748][  T157]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   14.400751][  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)
[   14.400758][  T157]  devkmsg_emit.constprop.0 (kernel/printk/printk.c:733)
[   14.400762][  T157]  ? vprintk_emit.cold (kernel/printk/printk.c:2449)
[   14.400766][  T157]  ? __kmalloc_noprof (mm/slub.c:5415 mm/slub.c:5439)
[   14.400768][  T157]  ? idr_get_free (??:?)
[   14.400772][  T157]  ? devkmsg_write (./include/linux/slab.h:995 kernel/printk/printk.c:762)
[   14.400775][  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)
[   14.400778][  T157]  devkmsg_write.cold (kernel/printk/printk.c:796)
[   14.400781][  T157]  ? vprintk_default (kernel/printk/printk.c:2494)
[   14.400783][  T157]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   14.400785][  T157]  ? vfs_lock_file (./include/linux/fs.h:1348)
[   14.400790][  T157]  ? vprintk_default (kernel/printk/printk.c:2494)
[   14.400792][  T157]  new_sync_write (fs/read_write.c:595)
[   14.400797][  T157]  ? new_sync_read (./include/linux/ioprio.h:41)
[   14.400799][  T157]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   14.400807][  T157]  vfs_write (fs/read_write.c:687)
[   14.400812][  T157]  ksys_write (fs/read_write.c:739)
[   14.400815][  T157]  ? __ia32_sys_read (fs/read_write.c:723)
[   14.400817][  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)
[   14.400820][  T157]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   14.400823][  T157]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   14.400826][  T157]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   14.400829][  T157]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   14.400831][  T157] RIP: 0033:0x7f60876b354e
[   14.400835][  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
[   14.400837][  T157] RSP: 002b:00007fff39f08580 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[   14.400840][  T157] RAX: ffffffffffffffda RBX: 00007f6087834580 RCX: 00007f60876b354e
[   14.400842][  T157] RDX: 0000000000000023 RSI: 0000556819a6b790 RDI: 0000000000000001
[   14.400843][  T157] RBP: 00007fff39f08590 R08: 0000000000000000 R09: 0000000000000000
[   14.400844][  T157] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000023
[   14.400845][  T157] R13: 0000000000000023 R14: 0000556819a6b790 R15: 0000000000000000
| [   15.858533][  T157] softirqs last disabled at (188965): __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767)
| [   15.858536][  T157] Preemption disabled at:
| [   15.858537][  T157] vprintk_emit (kernel/printk/printk.c:2471)
| [   15.858546][  T157] Tainted: [W]=WARN
[   15.858547][  T157] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   15.858549][  T157] Call Trace:
[   15.858551][  T157]  <TASK>
[   15.858552][  T157]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   15.858558][  T157]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   15.858560][  T157]  __might_resched.cold (kernel/sched/core.c:9234)
[   15.858565][  T157]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   15.858569][  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)
[   15.858574][  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))
[   15.858576][  T157]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   15.858583][  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)
[   15.858585][  T157]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   15.858589][  T157]  put_chars (drivers/char/virtio_console.c:1176)
[   15.858592][  T157]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   15.858593][  T157]  ? printk_get_next_message (kernel/printk/printk.c:3072)
[   15.858597][  T157]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   15.858600][  T157]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   15.858604][  T157]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   15.858607][  T157]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   15.858609][  T157]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   15.858613][  T157]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   15.858616][  T157]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   15.858620][  T157]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   15.858623][  T157]  console_emit_next_record (kernel/printk/printk.c:3183)
[   15.858627][  T157]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   15.858632][  T157]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   15.858634][  T157]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   15.858638][  T157]  console_flush_one_record (kernel/printk/printk.c:3268)
[   15.858642][  T157]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   15.858644][  T157]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   15.858649][  T157]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   15.858652][  T157]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   15.858653][  T157]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   15.858655][  T157]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   15.858661][  T157]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   15.858663][  T157]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   15.858668][  T157]  vprintk_emit (kernel/printk/printk.c:2479)
[   15.858679][  T157]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   15.858683][  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)
[   15.858691][  T157]  devkmsg_emit.constprop.0 (kernel/printk/printk.c:733)
[   15.858696][  T157]  ? vprintk_emit.cold (kernel/printk/printk.c:2449)
[   15.858702][  T157]  ? __kmalloc_noprof (mm/slub.c:5415 mm/slub.c:5439)
[   15.858704][  T157]  ? idr_get_free (??:?)
[   15.858708][  T157]  ? devkmsg_write (./include/linux/slab.h:995 kernel/printk/printk.c:762)
[   15.858713][  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)
[   15.858717][  T157]  devkmsg_write.cold (kernel/printk/printk.c:796)
[   15.858720][  T157]  ? vprintk_default (kernel/printk/printk.c:2494)
[   15.858723][  T157]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   15.858726][  T157]  ? vfs_lock_file (./include/linux/fs.h:1348)
[   15.858731][  T157]  ? vprintk_default (kernel/printk/printk.c:2494)
[   15.858735][  T157]  new_sync_write (fs/read_write.c:595)
[   15.858740][  T157]  ? new_sync_read (./include/linux/ioprio.h:41)
[   15.858742][  T157]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   15.858751][  T157]  vfs_write (fs/read_write.c:687)
[   15.858755][  T157]  ksys_write (fs/read_write.c:739)
[   15.858758][  T157]  ? __ia32_sys_read (fs/read_write.c:723)
[   15.858759][  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)
[   15.858762][  T157]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   15.858766][  T157]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   15.858768][  T157]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   15.858771][  T157]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   15.858774][  T157] RIP: 0033:0x7f60876b354e
[   15.858778][  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
[   15.858780][  T157] RSP: 002b:00007fff39f08580 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[   15.858783][  T157] RAX: ffffffffffffffda RBX: 00007f6087834580 RCX: 00007f60876b354e
[   15.858784][  T157] RDX: 0000000000000023 RSI: 0000556819a6b790 RDI: 0000000000000001
[   15.858785][  T157] RBP: 00007fff39f08590 R08: 0000000000000000 R09: 0000000000000000
[   15.858786][  T157] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000023
[   15.858787][  T157] R13: 0000000000000023 R14: 0000556819a6b790 R15: 0000000000000000
| [   17.347717][  T157] softirqs last disabled at (210526): 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))
| [   17.347719][  T157] Preemption disabled at:
| [   17.347720][  T157] vprintk_emit (kernel/printk/printk.c:2471)
| [   17.347730][  T157] Tainted: [W]=WARN
[   17.347731][  T157] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   17.347733][  T157] Call Trace:
[   17.347735][  T157]  <TASK>
[   17.347737][  T157]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   17.347742][  T157]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   17.347744][  T157]  __might_resched.cold (kernel/sched/core.c:9234)
[   17.347749][  T157]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   17.347753][  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)
[   17.347758][  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))
[   17.347760][  T157]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   17.347766][  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)
[   17.347769][  T157]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   17.347772][  T157]  put_chars (drivers/char/virtio_console.c:1176)
[   17.347776][  T157]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   17.347777][  T157]  ? printk_get_next_message (kernel/printk/printk.c:3072)
[   17.347781][  T157]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   17.347784][  T157]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   17.347788][  T157]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   17.347791][  T157]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   17.347792][  T157]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   17.347797][  T157]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   17.347800][  T157]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   17.347803][  T157]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   17.347807][  T157]  console_emit_next_record (kernel/printk/printk.c:3183)
[   17.347811][  T157]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   17.347815][  T157]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   17.347818][  T157]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   17.347821][  T157]  console_flush_one_record (kernel/printk/printk.c:3268)
[   17.347826][  T157]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   17.347827][  T157]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   17.347833][  T157]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   17.347836][  T157]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   17.347837][  T157]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   17.347840][  T157]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   17.347843][  T157]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   17.347845][  T157]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   17.347848][  T157]  vprintk_emit (kernel/printk/printk.c:2479)
[   17.347852][  T157]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   17.347855][  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)
[   17.347861][  T157]  devkmsg_emit.constprop.0 (kernel/printk/printk.c:733)
[   17.347865][  T157]  ? vprintk_emit.cold (kernel/printk/printk.c:2449)
[   17.347869][  T157]  ? __kmalloc_noprof (mm/slub.c:5415 mm/slub.c:5439)
[   17.347871][  T157]  ? idr_get_free (??:?)
[   17.347876][  T157]  ? devkmsg_write (./include/linux/slab.h:995 kernel/printk/printk.c:762)
[   17.347879][  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)
[   17.347882][  T157]  devkmsg_write.cold (kernel/printk/printk.c:796)
[   17.347884][  T157]  ? vprintk_default (kernel/printk/printk.c:2494)
[   17.347886][  T157]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   17.347888][  T157]  ? vfs_lock_file (./include/linux/fs.h:1348)
[   17.347893][  T157]  ? vprintk_default (kernel/printk/printk.c:2494)
[   17.347896][  T157]  new_sync_write (fs/read_write.c:595)
[   17.347901][  T157]  ? new_sync_read (./include/linux/ioprio.h:41)
[   17.347902][  T157]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   17.347911][  T157]  vfs_write (fs/read_write.c:687)
[   17.347916][  T157]  ksys_write (fs/read_write.c:739)
[   17.347919][  T157]  ? __ia32_sys_read (fs/read_write.c:723)
[   17.347921][  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)
[   17.347923][  T157]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   17.347927][  T157]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   17.347930][  T157]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   17.347933][  T157]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   17.347935][  T157] RIP: 0033:0x7f60876b354e
[   17.347939][  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
[   17.347941][  T157] RSP: 002b:00007fff39f08580 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[   17.347945][  T157] RAX: ffffffffffffffda RBX: 00007f6087834580 RCX: 00007f60876b354e
[   17.347946][  T157] RDX: 0000000000000023 RSI: 0000556819a6b790 RDI: 0000000000000001
[   17.347947][  T157] RBP: 00007fff39f08590 R08: 0000000000000000 R09: 0000000000000000
[   17.347948][  T157] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000023
[   17.347949][  T157] R13: 0000000000000023 R14: 0000556819a6b790 R15: 0000000000000000
| [   24.197045][  T712] softirqs last disabled at (2393): __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767)
| [   24.197048][  T712] Preemption disabled at:
| [   24.197049][  T712] vprintk_emit (kernel/printk/printk.c:2471)
| [   24.197058][  T712] Tainted: [W]=WARN
[   24.197059][  T712] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   24.197061][  T712] Call Trace:
[   24.197063][  T712]  <TASK>
[   24.197065][  T712]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   24.197070][  T712]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   24.197072][  T712]  __might_resched.cold (kernel/sched/core.c:9234)
[   24.197077][  T712]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   24.197081][  T712]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   24.197086][  T712]  __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))
[   24.197088][  T712]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   24.197094][  T712]  ? 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)
[   24.197097][  T712]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   24.197100][  T712]  put_chars (drivers/char/virtio_console.c:1176)
[   24.197103][  T712]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   24.197105][  T712]  ? printk_get_next_message (kernel/printk/printk.c:3072)
[   24.197109][  T712]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   24.197112][  T712]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   24.197116][  T712]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   24.197119][  T712]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   24.197120][  T712]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   24.197124][  T712]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   24.197128][  T712]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   24.197131][  T712]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   24.197134][  T712]  console_emit_next_record (kernel/printk/printk.c:3183)
[   24.197138][  T712]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   24.197143][  T712]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   24.197145][  T712]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   24.197149][  T712]  console_flush_one_record (kernel/printk/printk.c:3268)
[   24.197153][  T712]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   24.197155][  T712]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   24.197161][  T712]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   24.197163][  T712]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   24.197165][  T712]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   24.197167][  T712]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   24.197171][  T712]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   24.197173][  T712]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   24.197176][  T712]  vprintk_emit (kernel/printk/printk.c:2479)
[   24.197180][  T712]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   24.197183][  T712]  ? _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)
[   24.197189][  T712]  devkmsg_emit.constprop.0 (kernel/printk/printk.c:733)
[   24.197194][  T712]  ? vprintk_emit.cold (kernel/printk/printk.c:2449)
[   24.197198][  T712]  ? __kmalloc_noprof (mm/slub.c:5415 mm/slub.c:5439)
[   24.197200][  T712]  ? idr_get_free (??:?)
[   24.197204][  T712]  ? devkmsg_write (./include/linux/slab.h:995 kernel/printk/printk.c:762)
[   24.197207][  T712]  ? _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)
[   24.197210][  T712]  devkmsg_write.cold (kernel/printk/printk.c:796)
[   24.197213][  T712]  ? vprintk_default (kernel/printk/printk.c:2494)
[   24.197214][  T712]  ? handle_pte_fault (mm/memory.c:6558)
[   24.197220][  T712]  ? do_numa_page.isra.0 (mm/memory.c:6319 (discriminator 1))
[   24.197222][  T712]  ? vprintk_default (kernel/printk/printk.c:2494)
[   24.197225][  T712]  new_sync_write (fs/read_write.c:595)
[   24.197230][  T712]  ? new_sync_read (./include/linux/ioprio.h:41)
[   24.197231][  T712]  ? 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))
[   24.197241][  T712]  vfs_write (fs/read_write.c:687)
[   24.197245][  T712]  ksys_write (fs/read_write.c:739)
[   24.197249][  T712]  ? __ia32_sys_read (fs/read_write.c:723)
[   24.197251][  T712]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   24.197253][  T712]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   24.197257][  T712]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   24.197259][  T712]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   24.197263][  T712]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   24.197265][  T712] RIP: 0033:0x7f60876b354e
[   24.197269][  T712] 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
[   24.197271][  T712] RSP: 002b:00007fff39f07d50 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[   24.197274][  T712] RAX: ffffffffffffffda RBX: 00007f6087834580 RCX: 00007f60876b354e
[   24.197276][  T712] RDX: 0000000000000025 RSI: 0000556819a6b790 RDI: 0000000000000001
[   24.197277][  T712] RBP: 00007fff39f07d60 R08: 0000000000000000 R09: 0000000000000000
[   24.197278][  T712] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000025


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