======================================
| [    9.888168][  T171] softirqs last disabled at (40135): __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767)
| [    9.888171][  T171] Preemption disabled at:
| [    9.888171][  T171] vprintk_emit (kernel/printk/printk.c:2471)
| [    9.888181][  T171] Tainted: [W]=WARN
[    9.888182][  T171] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[    9.888184][  T171] Call Trace:
[    9.888185][  T171]  <TASK>
[    9.888187][  T171]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[    9.888192][  T171]  ? vprintk_emit (kernel/printk/printk.c:2471)
[    9.888194][  T171]  __might_resched.cold (kernel/sched/core.c:9234)
[    9.888199][  T171]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[    9.888203][  T171]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[    9.888207][  T171]  __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))
[    9.888209][  T171]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[    9.888215][  T171]  ? 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)
[    9.888218][  T171]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[    9.888221][  T171]  put_chars (drivers/char/virtio_console.c:1176)
[    9.888224][  T171]  ? __send_to_port (drivers/char/virtio_console.c:654)
[    9.888226][  T171]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[    9.888231][  T171]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[    9.888238][  T171]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[    9.888240][  T171]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[    9.888244][  T171]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[    9.888247][  T171]  console_emit_next_record (kernel/printk/printk.c:3183)
[    9.888251][  T171]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[    9.888255][  T171]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[    9.888257][  T171]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[    9.888261][  T171]  console_flush_one_record (kernel/printk/printk.c:3268)
[    9.888265][  T171]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[    9.888266][  T171]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[    9.888271][  T171]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[    9.888274][  T171]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[    9.888275][  T171]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[    9.888277][  T171]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[    9.888280][  T171]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[    9.888282][  T171]  ? vprintk_emit (kernel/printk/printk.c:2478)
[    9.888285][  T171]  vprintk_emit (kernel/printk/printk.c:2479)
[    9.888289][  T171]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[    9.888290][  T171]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[    9.888294][  T171]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[    9.888296][  T171]  ? fast_dput (./include/linux/rcupdate.h:319 (discriminator 2) ./include/linux/rcupdate.h:880 (discriminator 2) fs/dcache.c:948 (discriminator 2))
[    9.888300][  T171]  ? 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
[    9.888304][  T171]  _printk (kernel/printk/printk.c:2504)
[    9.888309][  T171]  ? snapshot_read.cold (user.c:?)
[    9.888311][  T171]  ? __up_write (kernel/locking/rwsem.c:1422 (discriminator 1))
[    9.888315][  T171]  ? 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
[    9.888319][  T171]  ? 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)
[    9.888324][  T171] init_netconsole (drivers/net/netconsole.c:1286) netconsole
[    9.888327][  T171]  ? 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
[    9.888334][  T171]  ? 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
[    9.888337][  T171]  do_one_initcall (init/main.c:1357)
[    9.888340][  T171]  ? trace_event_raw_event_initcall_level (./include/trace/events/initcall.h:10)
[    9.888345][  T171]  ? do_init_module (./include/linux/slab.h:991 (discriminator 1) kernel/module/main.c:3105 (discriminator 1))
[    9.888348][  T171]  ? kasan_unpoison (mm/kasan/shadow.c:146 mm/kasan/shadow.c:178)
[    9.888353][  T171]  do_init_module (kernel/module/main.c:3117)
[    9.888357][  T171]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4488)
[    9.888361][  T171]  ? free_module (./include/trace/events/module.h:50 (discriminator 19))
[    9.888364][  T171]  ? kfree (./include/linux/kasan.h:235 mm/slub.c:2748 mm/slub.c:6499 mm/slub.c:6792)
[    9.888368][  T171]  load_module (kernel/module/main.c:3593)
[    9.888375][  T171]  ? layout_and_allocate.isra.0 (kernel/module/main.c:3016)
[    9.888378][  T171]  ? __ia32_sys_fsconfig (??:?)
[    9.888382][  T171]  ? ovl_real_file (fs/overlayfs/file.c:195)
[    9.888385][  T171]  ? backing_file_read_iter (fs/backing-file.c:211)
[    9.888389][  T171]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[    9.888392][  T171]  init_module_from_file (kernel/module/main.c:3790)
[    9.888396][  T171]  ? __do_sys_init_module (kernel/module/main.c:3664)
[    9.888404][  T171]  ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[    9.888407][  T171]  ? 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)
[    9.888410][  T171]  idempotent_init_module (kernel/module/main.c:3802)
[    9.888413][  T171]  ? init_module_from_file (kernel/module/main.c:3791)
[    9.888419][  T171]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[    9.888421][  T171]  ? cap_capable (./include/trace/events/capability.h:26 (discriminator 22) security/commoncap.c:130 (discriminator 22))
[    9.888427][  T171]  __x64_sys_finit_module (kernel/module/main.c:3828 kernel/module/main.c:3812 kernel/module/main.c:3812)
[    9.888429][  T171]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[    9.888433][  T171]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[    9.888435][  T171]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[    9.888438][  T171]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[    9.888440][  T171] RIP: 0033:0x7fe5c816f37d
[    9.888444][  T171] 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
[    9.888445][  T171] RSP: 002b:00007fff5c48e5c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000139
[    9.888448][  T171] RAX: ffffffffffffffda RBX: 000055f7dda31700 RCX: 00007fe5c816f37d
[    9.888449][  T171] RDX: 0000000000000000 RSI: 000055f7cbeabffd RDI: 0000000000000005
[    9.888450][  T171] RBP: 00007fff5c48e660 R08: 0000000000000000 R09: 0000000000000000
[    9.888451][  T171] R10: 0000000000000000 R11: 0000000000000246 R12: 000055f7cbeabffd
[    9.888452][  T171] R13: 000055f7dda31810 R14: 0000000000040000 R15: 0000000000000000
| [   13.283641][  T158] softirqs last disabled at (142894): 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))
| [   13.283644][  T158] Preemption disabled at:
| [   13.283645][  T158] vprintk_emit (kernel/printk/printk.c:2471)
| [   13.283655][  T158] Tainted: [W]=WARN
[   13.283656][  T158] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   13.283658][  T158] Call Trace:
[   13.283660][  T158]  <TASK>
[   13.283662][  T158]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   13.283667][  T158]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   13.283669][  T158]  __might_resched.cold (kernel/sched/core.c:9234)
[   13.283674][  T158]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   13.283677][  T158]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   13.283682][  T158]  __kmalloc_noprof (./include/linux/sched/mm.h:322 (discriminator 2) mm/slub.c:4636 (discriminator 2) mm/slub.c:4974 (discriminator 2) mm/slub.c:5413 (discriminator 2) mm/slub.c:5439 (discriminator 2))
[   13.283684][  T158]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   13.283690][  T158]  ? do_raw_spin_unlock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:32 ./include/asm-generic/qspinlock.h:58 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141)
[   13.283692][  T158]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   13.283696][  T158]  put_chars (drivers/char/virtio_console.c:1176)
[   13.283699][  T158]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   13.283700][  T158]  ? printk_get_next_message (kernel/printk/printk.c:3072)
[   13.283704][  T158]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   13.283707][  T158]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   13.283711][  T158]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   13.283714][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   13.283715][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   13.283720][  T158]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   13.283723][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   13.283726][  T158]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   13.283730][  T158]  console_emit_next_record (kernel/printk/printk.c:3183)
[   13.283733][  T158]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   13.283738][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   13.283740][  T158]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   13.283744][  T158]  console_flush_one_record (kernel/printk/printk.c:3268)
[   13.283748][  T158]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   13.283749][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   13.283754][  T158]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   13.283757][  T158]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   13.283759][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   13.283761][  T158]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   13.283765][  T158]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   13.283766][  T158]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   13.283769][  T158]  vprintk_emit (kernel/printk/printk.c:2479)
[   13.283773][  T158]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   13.283776][  T158]  ? _copy_from_iter (./include/linux/instrumented.h:146 lib/iov_iter.c:66 ./include/linux/iov_iter.h:30 ./include/linux/iov_iter.h:302 ./include/linux/iov_iter.h:330 lib/iov_iter.c:261 lib/iov_iter.c:272)
[   13.283782][  T158]  devkmsg_emit.constprop.0 (kernel/printk/printk.c:733)
[   13.283786][  T158]  ? vprintk_emit.cold (kernel/printk/printk.c:2449)
[   13.283790][  T158]  ? __kmalloc_noprof (mm/slub.c:5415 mm/slub.c:5439)
[   13.283792][  T158]  ? idr_get_free (??:?)
[   13.283796][  T158]  ? devkmsg_write (./include/linux/slab.h:995 kernel/printk/printk.c:762)
[   13.283799][  T158]  ? _copy_from_iter (./include/linux/instrumented.h:146 lib/iov_iter.c:66 ./include/linux/iov_iter.h:30 ./include/linux/iov_iter.h:302 ./include/linux/iov_iter.h:330 lib/iov_iter.c:261 lib/iov_iter.c:272)
[   13.283802][  T158]  devkmsg_write.cold (kernel/printk/printk.c:796)
[   13.283804][  T158]  ? vprintk_default (kernel/printk/printk.c:2494)
[   13.283806][  T158]  ? handle_pte_fault (mm/memory.c:6582)
[   13.283811][  T158]  ? do_numa_page.isra.0 (mm/memory.c:6319 (discriminator 1))
[   13.283813][  T158]  ? vprintk_default (kernel/printk/printk.c:2494)
[   13.283816][  T158]  new_sync_write (fs/read_write.c:595)
[   13.283821][  T158]  ? new_sync_read (./include/linux/ioprio.h:41)
[   13.283823][  T158]  ? lock_vma_under_rcu (./include/linux/rcupdate.h:319 (discriminator 2) ./include/linux/rcupdate.h:880 (discriminator 2) mm/mmap_lock.c:329 (discriminator 2))
[   13.283831][  T158]  vfs_write (fs/read_write.c:687)
[   13.283835][  T158]  ksys_write (fs/read_write.c:739)
[   13.283838][  T158]  ? __ia32_sys_read (fs/read_write.c:723)
[   13.283841][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   13.283843][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   13.283846][  T158]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   13.283849][  T158]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   13.283852][  T158]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   13.283855][  T158] RIP: 0033:0x7f31e8e2854e
[   13.283859][  T158] Code: 4d 89 d8 e8 b4 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 03 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 b4 bd 00 00       	call   0xbdbc
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 03 ff ff ff       	call   0xffffffffffffff3c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 03 ff ff ff       	call   0xffffffffffffff12
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[   13.283861][  T158] RSP: 002b:00007ffe02ea4c60 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[   13.283864][  T158] RAX: ffffffffffffffda RBX: 00007f31e8fa9580 RCX: 00007f31e8e2854e
[   13.283865][  T158] RDX: 0000000000000023 RSI: 0000558505967790 RDI: 0000000000000001
[   13.283866][  T158] RBP: 00007ffe02ea4c70 R08: 0000000000000000 R09: 0000000000000000
[   13.283867][  T158] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000023
[   13.283868][  T158] R13: 0000000000000023 R14: 0000558505967790 R15: 0000000000000000
| [   15.011550][  T158] softirqs last disabled at (168612): 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))
| [   15.011552][  T158] Preemption disabled at:
| [   15.011553][  T158] vprintk_emit (kernel/printk/printk.c:2471)
| [   15.011563][  T158] Tainted: [W]=WARN
[   15.011564][  T158] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   15.011566][  T158] Call Trace:
[   15.011568][  T158]  <TASK>
[   15.011570][  T158]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   15.011575][  T158]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   15.011577][  T158]  __might_resched.cold (kernel/sched/core.c:9234)
[   15.011582][  T158]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   15.011585][  T158]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   15.011590][  T158]  __kmalloc_noprof (./include/linux/sched/mm.h:322 (discriminator 2) mm/slub.c:4636 (discriminator 2) mm/slub.c:4974 (discriminator 2) mm/slub.c:5413 (discriminator 2) mm/slub.c:5439 (discriminator 2))
[   15.011592][  T158]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   15.011598][  T158]  ? do_raw_spin_unlock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:32 ./include/asm-generic/qspinlock.h:58 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141)
[   15.011601][  T158]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   15.011604][  T158]  put_chars (drivers/char/virtio_console.c:1176)
[   15.011607][  T158]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   15.011609][  T158]  ? printk_get_next_message (kernel/printk/printk.c:3072)
[   15.011612][  T158]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   15.011615][  T158]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   15.011619][  T158]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   15.011622][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   15.011623][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   15.011628][  T158]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   15.011631][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   15.011634][  T158]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   15.011638][  T158]  console_emit_next_record (kernel/printk/printk.c:3183)
[   15.011643][  T158]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   15.011647][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   15.011650][  T158]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   15.011653][  T158]  console_flush_one_record (kernel/printk/printk.c:3268)
[   15.011657][  T158]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   15.011659][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   15.011664][  T158]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   15.011667][  T158]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   15.011668][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   15.011671][  T158]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   15.011674][  T158]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   15.011676][  T158]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   15.011679][  T158]  vprintk_emit (kernel/printk/printk.c:2479)
[   15.011682][  T158]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   15.011685][  T158]  ? _copy_from_iter (./include/linux/instrumented.h:146 lib/iov_iter.c:66 ./include/linux/iov_iter.h:30 ./include/linux/iov_iter.h:302 ./include/linux/iov_iter.h:330 lib/iov_iter.c:261 lib/iov_iter.c:272)
[   15.011691][  T158]  devkmsg_emit.constprop.0 (kernel/printk/printk.c:733)
[   15.011695][  T158]  ? vprintk_emit.cold (kernel/printk/printk.c:2449)
[   15.011700][  T158]  ? __kmalloc_noprof (mm/slub.c:5415 mm/slub.c:5439)
[   15.011701][  T158]  ? idr_get_free (??:?)
[   15.011705][  T158]  ? devkmsg_write (./include/linux/slab.h:995 kernel/printk/printk.c:762)
[   15.011708][  T158]  ? _copy_from_iter (./include/linux/instrumented.h:146 lib/iov_iter.c:66 ./include/linux/iov_iter.h:30 ./include/linux/iov_iter.h:302 ./include/linux/iov_iter.h:330 lib/iov_iter.c:261 lib/iov_iter.c:272)
[   15.011711][  T158]  devkmsg_write.cold (kernel/printk/printk.c:796)
[   15.011714][  T158]  ? vprintk_default (kernel/printk/printk.c:2494)
[   15.011715][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   15.011718][  T158]  ? vfs_lock_file (./include/linux/fs.h:1348)
[   15.011722][  T158]  ? vprintk_default (kernel/printk/printk.c:2494)
[   15.011725][  T158]  new_sync_write (fs/read_write.c:595)
[   15.011730][  T158]  ? new_sync_read (./include/linux/ioprio.h:41)
[   15.011731][  T158]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   15.011740][  T158]  vfs_write (fs/read_write.c:687)
[   15.011744][  T158]  ksys_write (fs/read_write.c:739)
[   15.011747][  T158]  ? __ia32_sys_read (fs/read_write.c:723)
[   15.011748][  T158]  ? do_raw_spin_unlock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:32 ./include/asm-generic/qspinlock.h:58 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141)
[   15.011751][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   15.011755][  T158]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   15.011757][  T158]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   15.011761][  T158]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   15.011763][  T158] RIP: 0033:0x7f31e8e2854e
[   15.011767][  T158] Code: 4d 89 d8 e8 b4 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 03 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 b4 bd 00 00       	call   0xbdbc
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 03 ff ff ff       	call   0xffffffffffffff3c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 03 ff ff ff       	call   0xffffffffffffff12
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[   15.011769][  T158] RSP: 002b:00007ffe02ea4c60 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[   15.011772][  T158] RAX: ffffffffffffffda RBX: 00007f31e8fa9580 RCX: 00007f31e8e2854e
[   15.011774][  T158] RDX: 0000000000000023 RSI: 0000558505967790 RDI: 0000000000000001
[   15.011775][  T158] RBP: 00007ffe02ea4c70 R08: 0000000000000000 R09: 0000000000000000
[   15.011776][  T158] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000023
[   15.011777][  T158] R13: 0000000000000023 R14: 0000558505967790 R15: 0000000000000000
| [   16.523853][  T158] softirqs last disabled at (199738): restore_fpregs_from_user (./include/linux/bottom_half.h:20 (discriminator 2) ./arch/x86/include/asm/fpu/api.h:69 (discriminator 2) arch/x86/kernel/fpu/signal.c:277 (discriminator 2))
| [   16.523855][  T158] Preemption disabled at:
| [   16.523856][  T158] vprintk_emit (kernel/printk/printk.c:2471)
| [   16.523865][  T158] Tainted: [W]=WARN
[   16.523866][  T158] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   16.523868][  T158] Call Trace:
[   16.523870][  T158]  <TASK>
[   16.523872][  T158]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   16.523877][  T158]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   16.523879][  T158]  __might_resched.cold (kernel/sched/core.c:9234)
[   16.523884][  T158]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   16.523888][  T158]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   16.523892][  T158]  __kmalloc_noprof (./include/linux/sched/mm.h:322 (discriminator 2) mm/slub.c:4636 (discriminator 2) mm/slub.c:4974 (discriminator 2) mm/slub.c:5413 (discriminator 2) mm/slub.c:5439 (discriminator 2))
[   16.523894][  T158]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   16.523900][  T158]  ? do_raw_spin_unlock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:32 ./include/asm-generic/qspinlock.h:58 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141)
[   16.523903][  T158]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   16.523906][  T158]  put_chars (drivers/char/virtio_console.c:1176)
[   16.523909][  T158]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   16.523910][  T158]  ? printk_get_next_message (kernel/printk/printk.c:3072)
[   16.523914][  T158]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   16.523917][  T158]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   16.523921][  T158]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   16.523924][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   16.523925][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   16.523930][  T158]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   16.523933][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   16.523936][  T158]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   16.523939][  T158]  console_emit_next_record (kernel/printk/printk.c:3183)
[   16.523943][  T158]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   16.523947][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   16.523950][  T158]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   16.523953][  T158]  console_flush_one_record (kernel/printk/printk.c:3268)
[   16.523957][  T158]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   16.523959][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   16.523964][  T158]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   16.523967][  T158]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   16.523968][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   16.523971][  T158]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   16.523974][  T158]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   16.523976][  T158]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   16.523979][  T158]  vprintk_emit (kernel/printk/printk.c:2479)
[   16.523982][  T158]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   16.523985][  T158]  ? _copy_from_iter (./include/linux/instrumented.h:146 lib/iov_iter.c:66 ./include/linux/iov_iter.h:30 ./include/linux/iov_iter.h:302 ./include/linux/iov_iter.h:330 lib/iov_iter.c:261 lib/iov_iter.c:272)
[   16.523991][  T158]  devkmsg_emit.constprop.0 (kernel/printk/printk.c:733)
[   16.523995][  T158]  ? vprintk_emit.cold (kernel/printk/printk.c:2449)
[   16.523999][  T158]  ? __kmalloc_noprof (mm/slub.c:5415 mm/slub.c:5439)
[   16.524001][  T158]  ? idr_get_free (??:?)
[   16.524005][  T158]  ? devkmsg_write (./include/linux/slab.h:995 kernel/printk/printk.c:762)
[   16.524008][  T158]  ? _copy_from_iter (./include/linux/instrumented.h:146 lib/iov_iter.c:66 ./include/linux/iov_iter.h:30 ./include/linux/iov_iter.h:302 ./include/linux/iov_iter.h:330 lib/iov_iter.c:261 lib/iov_iter.c:272)
[   16.524011][  T158]  devkmsg_write.cold (kernel/printk/printk.c:796)
[   16.524014][  T158]  ? vprintk_default (kernel/printk/printk.c:2494)
[   16.524016][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   16.524018][  T158]  ? vfs_lock_file (./include/linux/fs.h:1348)
[   16.524022][  T158]  ? vprintk_default (kernel/printk/printk.c:2494)
[   16.524029][  T158]  new_sync_write (fs/read_write.c:595)
[   16.524034][  T158]  ? new_sync_read (./include/linux/ioprio.h:41)
[   16.524036][  T158]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   16.524044][  T158]  vfs_write (fs/read_write.c:687)
[   16.524048][  T158]  ksys_write (fs/read_write.c:739)
[   16.524051][  T158]  ? __ia32_sys_read (fs/read_write.c:723)
[   16.524053][  T158]  ? do_raw_spin_unlock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:32 ./include/asm-generic/qspinlock.h:58 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141)
[   16.524055][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   16.524059][  T158]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   16.524061][  T158]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   16.524064][  T158]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   16.524067][  T158] RIP: 0033:0x7f31e8e2854e
[   16.524071][  T158] Code: 4d 89 d8 e8 b4 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 03 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 b4 bd 00 00       	call   0xbdbc
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 03 ff ff ff       	call   0xffffffffffffff3c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 03 ff ff ff       	call   0xffffffffffffff12
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[   16.524073][  T158] RSP: 002b:00007ffe02ea4c60 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[   16.524076][  T158] RAX: ffffffffffffffda RBX: 00007f31e8fa9580 RCX: 00007f31e8e2854e
[   16.524078][  T158] RDX: 0000000000000023 RSI: 0000558505967790 RDI: 0000000000000001
[   16.524079][  T158] RBP: 00007ffe02ea4c70 R08: 0000000000000000 R09: 0000000000000000
[   16.524080][  T158] 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