======================================
| [    9.224535][  T171] softirqs last disabled at (35399): __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767)
| [    9.224538][  T171] Preemption disabled at:
| [    9.224538][  T171] vprintk_emit (kernel/printk/printk.c:2471)
| [    9.224547][  T171] Tainted: [W]=WARN
[    9.224548][  T171] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[    9.224549][  T171] Call Trace:
[    9.224551][  T171]  <TASK>
[    9.224553][  T171]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[    9.224559][  T171]  ? vprintk_emit (kernel/printk/printk.c:2471)
[    9.224561][  T171]  __might_resched.cold (kernel/sched/core.c:9234)
[    9.224566][  T171]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[    9.224569][  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)
[    9.224574][  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))
[    9.224576][  T171]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[    9.224582][  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)
[    9.224584][  T171]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[    9.224587][  T171]  put_chars (drivers/char/virtio_console.c:1176)
[    9.224590][  T171]  ? __send_to_port (drivers/char/virtio_console.c:654)
[    9.224593][  T171]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[    9.224599][  T171]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[    9.224605][  T171]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[    9.224607][  T171]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[    9.224611][  T171]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[    9.224614][  T171]  console_emit_next_record (kernel/printk/printk.c:3183)
[    9.224618][  T171]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[    9.224623][  T171]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[    9.224625][  T171]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[    9.224628][  T171]  console_flush_one_record (kernel/printk/printk.c:3268)
[    9.224632][  T171]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[    9.224634][  T171]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[    9.224639][  T171]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[    9.224642][  T171]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[    9.224643][  T171]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[    9.224645][  T171]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[    9.224649][  T171]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[    9.224650][  T171]  ? vprintk_emit (kernel/printk/printk.c:2478)
[    9.224654][  T171]  vprintk_emit (kernel/printk/printk.c:2479)
[    9.224658][  T171]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[    9.224659][  T171]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[    9.224663][  T171]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[    9.224664][  T171]  ? fast_dput (./include/linux/rcupdate.h:319 (discriminator 2) ./include/linux/rcupdate.h:880 (discriminator 2) fs/dcache.c:948 (discriminator 2))
[    9.224669][  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
[    9.224673][  T171]  _printk (kernel/printk/printk.c:2504)
[    9.224677][  T171]  ? snapshot_read.cold (user.c:?)
[    9.224680][  T171]  ? __up_write (kernel/locking/rwsem.c:1422 (discriminator 1))
[    9.224683][  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
[    9.224687][  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)
[    9.224692][  T171] init_netconsole (drivers/net/netconsole.c:1286) netconsole
[    9.224696][  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
[    9.224703][  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
[    9.224706][  T171]  do_one_initcall (init/main.c:1357)
[    9.224709][  T171]  ? trace_event_raw_event_initcall_level (./include/trace/events/initcall.h:10)
[    9.224714][  T171]  ? do_init_module (./include/linux/slab.h:991 (discriminator 1) kernel/module/main.c:3105 (discriminator 1))
[    9.224717][  T171]  ? kasan_unpoison (mm/kasan/shadow.c:146 mm/kasan/shadow.c:178)
[    9.224723][  T171]  do_init_module (kernel/module/main.c:3117)
[    9.224726][  T171]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4488)
[    9.224730][  T171]  ? free_module (./include/trace/events/module.h:50 (discriminator 19))
[    9.224733][  T171]  ? kfree (./include/linux/kasan.h:235 mm/slub.c:2748 mm/slub.c:6499 mm/slub.c:6792)
[    9.224737][  T171]  load_module (kernel/module/main.c:3593)
[    9.224744][  T171]  ? layout_and_allocate.isra.0 (kernel/module/main.c:3016)
[    9.224748][  T171]  ? __ia32_sys_fsconfig (??:?)
[    9.224751][  T171]  ? ovl_real_file (fs/overlayfs/file.c:195)
[    9.224755][  T171]  ? backing_file_read_iter (fs/backing-file.c:211)
[    9.224759][  T171]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[    9.224762][  T171]  init_module_from_file (kernel/module/main.c:3790)
[    9.224766][  T171]  ? __do_sys_init_module (kernel/module/main.c:3664)
[    9.224775][  T171]  ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[    9.224778][  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)
[    9.224781][  T171]  idempotent_init_module (kernel/module/main.c:3802)
[    9.224784][  T171]  ? init_module_from_file (kernel/module/main.c:3791)
[    9.224790][  T171]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[    9.224792][  T171]  ? cap_capable (./include/trace/events/capability.h:26 (discriminator 22) security/commoncap.c:130 (discriminator 22))
[    9.224798][  T171]  __x64_sys_finit_module (kernel/module/main.c:3828 kernel/module/main.c:3812 kernel/module/main.c:3812)
[    9.224800][  T171]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[    9.224804][  T171]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[    9.224806][  T171]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[    9.224809][  T171]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[    9.224811][  T171] RIP: 0033:0x7f53a658137d
[    9.224815][  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
[    9.224816][  T171] RSP: 002b:00007ffc3dbd2b88 EFLAGS: 00000246 ORIG_RAX: 0000000000000139
[    9.224819][  T171] RAX: ffffffffffffffda RBX: 000055d1bc5d5700 RCX: 00007f53a658137d
[    9.224821][  T171] RDX: 0000000000000000 RSI: 000055d180a22ffd RDI: 0000000000000005
[    9.224821][  T171] RBP: 00007ffc3dbd2c20 R08: 0000000000000000 R09: 0000000000000000
[    9.224822][  T171] R10: 0000000000000000 R11: 0000000000000246 R12: 000055d180a22ffd
[    9.224823][  T171] R13: 000055d1bc5d5810 R14: 0000000000040000 R15: 0000000000000000
| [   12.531230][  T158] softirqs last disabled at (142085): __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767)
| [   12.531233][  T158] Preemption disabled at:
| [   12.531234][  T158] vprintk_emit (kernel/printk/printk.c:2471)
| [   12.531244][  T158] Tainted: [W]=WARN
[   12.531245][  T158] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   12.531246][  T158] Call Trace:
[   12.531248][  T158]  <TASK>
[   12.531250][  T158]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   12.531255][  T158]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   12.531258][  T158]  __might_resched.cold (kernel/sched/core.c:9234)
[   12.531262][  T158]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   12.531265][  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)
[   12.531270][  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))
[   12.531272][  T158]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   12.531278][  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)
[   12.531281][  T158]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   12.531284][  T158]  put_chars (drivers/char/virtio_console.c:1176)
[   12.531287][  T158]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   12.531288][  T158]  ? printk_get_next_message (kernel/printk/printk.c:3072)
[   12.531292][  T158]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   12.531295][  T158]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   12.531299][  T158]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   12.531301][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   12.531303][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   12.531307][  T158]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   12.531311][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   12.531313][  T158]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   12.531317][  T158]  console_emit_next_record (kernel/printk/printk.c:3183)
[   12.531321][  T158]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   12.531325][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   12.531327][  T158]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   12.531331][  T158]  console_flush_one_record (kernel/printk/printk.c:3268)
[   12.531335][  T158]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   12.531337][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   12.531341][  T158]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   12.531344][  T158]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   12.531346][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   12.531348][  T158]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   12.531351][  T158]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   12.531352][  T158]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   12.531356][  T158]  vprintk_emit (kernel/printk/printk.c:2479)
[   12.531359][  T158]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   12.531362][  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)
[   12.531367][  T158]  devkmsg_emit.constprop.0 (kernel/printk/printk.c:733)
[   12.531372][  T158]  ? vprintk_emit.cold (kernel/printk/printk.c:2449)
[   12.531376][  T158]  ? __kmalloc_noprof (mm/slub.c:5415 mm/slub.c:5439)
[   12.531377][  T158]  ? idr_get_free (??:?)
[   12.531381][  T158]  ? devkmsg_write (./include/linux/slab.h:995 kernel/printk/printk.c:762)
[   12.531384][  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)
[   12.531387][  T158]  devkmsg_write.cold (kernel/printk/printk.c:796)
[   12.531390][  T158]  ? vprintk_default (kernel/printk/printk.c:2494)
[   12.531391][  T158]  ? handle_pte_fault (mm/memory.c:6582)
[   12.531396][  T158]  ? do_numa_page.isra.0 (mm/memory.c:6319 (discriminator 1))
[   12.531399][  T158]  ? vprintk_default (kernel/printk/printk.c:2494)
[   12.531401][  T158]  new_sync_write (fs/read_write.c:595)
[   12.531406][  T158]  ? new_sync_read (./include/linux/ioprio.h:41)
[   12.531407][  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))
[   12.531416][  T158]  vfs_write (fs/read_write.c:687)
[   12.531420][  T158]  ksys_write (fs/read_write.c:739)
[   12.531422][  T158]  ? __ia32_sys_read (fs/read_write.c:723)
[   12.531425][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   12.531427][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   12.531430][  T158]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   12.531432][  T158]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   12.531435][  T158]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   12.531438][  T158] RIP: 0033:0x7f2840fee54e
[   12.531442][  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
[   12.531443][  T158] RSP: 002b:00007ffde420e740 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[   12.531447][  T158] RAX: ffffffffffffffda RBX: 00007f284116f580 RCX: 00007f2840fee54e
[   12.531448][  T158] RDX: 0000000000000023 RSI: 000055a86a2e8790 RDI: 0000000000000001
[   12.531449][  T158] RBP: 00007ffde420e750 R08: 0000000000000000 R09: 0000000000000000
[   12.531450][  T158] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000023
[   12.531451][  T158] R13: 0000000000000023 R14: 000055a86a2e8790 R15: 0000000000000000
| [   14.073073][  T158] softirqs last disabled at (173981): __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767)
| [   14.073076][  T158] Preemption disabled at:
| [   14.073076][  T158] vprintk_emit (kernel/printk/printk.c:2471)
| [   14.073086][  T158] Tainted: [W]=WARN
[   14.073087][  T158] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   14.073089][  T158] Call Trace:
[   14.073091][  T158]  <TASK>
[   14.073092][  T158]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   14.073097][  T158]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   14.073099][  T158]  __might_resched.cold (kernel/sched/core.c:9234)
[   14.073104][  T158]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   14.073107][  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)
[   14.073112][  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))
[   14.073114][  T158]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   14.073120][  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)
[   14.073122][  T158]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   14.073125][  T158]  put_chars (drivers/char/virtio_console.c:1176)
[   14.073128][  T158]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   14.073130][  T158]  ? printk_get_next_message (kernel/printk/printk.c:3072)
[   14.073133][  T158]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   14.073136][  T158]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   14.073140][  T158]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   14.073142][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   14.073144][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   14.073148][  T158]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   14.073151][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   14.073154][  T158]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   14.073158][  T158]  console_emit_next_record (kernel/printk/printk.c:3183)
[   14.073161][  T158]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   14.073165][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   14.073167][  T158]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   14.073171][  T158]  console_flush_one_record (kernel/printk/printk.c:3268)
[   14.073175][  T158]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   14.073177][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   14.073182][  T158]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   14.073185][  T158]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   14.073186][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   14.073188][  T158]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   14.073192][  T158]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   14.073193][  T158]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   14.073196][  T158]  vprintk_emit (kernel/printk/printk.c:2479)
[   14.073204][  T158]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   14.073207][  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)
[   14.073212][  T158]  devkmsg_emit.constprop.0 (kernel/printk/printk.c:733)
[   14.073216][  T158]  ? vprintk_emit.cold (kernel/printk/printk.c:2449)
[   14.073220][  T158]  ? __kmalloc_noprof (mm/slub.c:5415 mm/slub.c:5439)
[   14.073222][  T158]  ? idr_get_free (??:?)
[   14.073226][  T158]  ? devkmsg_write (./include/linux/slab.h:995 kernel/printk/printk.c:762)
[   14.073229][  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)
[   14.073231][  T158]  devkmsg_write.cold (kernel/printk/printk.c:796)
[   14.073234][  T158]  ? vprintk_default (kernel/printk/printk.c:2494)
[   14.073236][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   14.073238][  T158]  ? vfs_lock_file (./include/linux/fs.h:1348)
[   14.073242][  T158]  ? vprintk_default (kernel/printk/printk.c:2494)
[   14.073245][  T158]  new_sync_write (fs/read_write.c:595)
[   14.073250][  T158]  ? new_sync_read (./include/linux/ioprio.h:41)
[   14.073251][  T158]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   14.073259][  T158]  vfs_write (fs/read_write.c:687)
[   14.073263][  T158]  ksys_write (fs/read_write.c:739)
[   14.073266][  T158]  ? __ia32_sys_read (fs/read_write.c:723)
[   14.073268][  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)
[   14.073270][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   14.073274][  T158]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   14.073276][  T158]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   14.073279][  T158]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   14.073282][  T158] RIP: 0033:0x7f2840fee54e
[   14.073285][  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
[   14.073287][  T158] RSP: 002b:00007ffde420e740 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[   14.073290][  T158] RAX: ffffffffffffffda RBX: 00007f284116f580 RCX: 00007f2840fee54e
[   14.073291][  T158] RDX: 0000000000000023 RSI: 000055a86a2e8790 RDI: 0000000000000001
[   14.073292][  T158] RBP: 00007ffde420e750 R08: 0000000000000000 R09: 0000000000000000
[   14.073293][  T158] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000023
[   14.073294][  T158] R13: 0000000000000023 R14: 000055a86a2e8790 R15: 0000000000000000
| [   15.551101][  T158] softirqs last disabled at (195787): __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767)
| [   15.551104][  T158] Preemption disabled at:
| [   15.551104][  T158] vprintk_emit (kernel/printk/printk.c:2471)
| [   15.551114][  T158] Tainted: [W]=WARN
[   15.551115][  T158] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   15.551117][  T158] Call Trace:
[   15.551119][  T158]  <TASK>
[   15.551120][  T158]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   15.551126][  T158]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   15.551128][  T158]  __might_resched.cold (kernel/sched/core.c:9234)
[   15.551133][  T158]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   15.551137][  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)
[   15.551142][  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))
[   15.551144][  T158]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   15.551150][  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)
[   15.551152][  T158]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   15.551156][  T158]  put_chars (drivers/char/virtio_console.c:1176)
[   15.551159][  T158]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   15.551160][  T158]  ? printk_get_next_message (kernel/printk/printk.c:3072)
[   15.551164][  T158]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   15.551167][  T158]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   15.551171][  T158]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   15.551174][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   15.551176][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   15.551180][  T158]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   15.551183][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   15.551186][  T158]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   15.551190][  T158]  console_emit_next_record (kernel/printk/printk.c:3183)
[   15.551193][  T158]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   15.551198][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   15.551200][  T158]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   15.551209][  T158]  console_flush_one_record (kernel/printk/printk.c:3268)
[   15.551213][  T158]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   15.551215][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   15.551220][  T158]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   15.551222][  T158]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   15.551224][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   15.551226][  T158]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   15.551229][  T158]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   15.551231][  T158]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   15.551234][  T158]  vprintk_emit (kernel/printk/printk.c:2479)
[   15.551237][  T158]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   15.551240][  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)
[   15.551246][  T158]  devkmsg_emit.constprop.0 (kernel/printk/printk.c:733)
[   15.551250][  T158]  ? vprintk_emit.cold (kernel/printk/printk.c:2449)
[   15.551254][  T158]  ? __kmalloc_noprof (mm/slub.c:5415 mm/slub.c:5439)
[   15.551256][  T158]  ? idr_get_free (??:?)
[   15.551260][  T158]  ? devkmsg_write (./include/linux/slab.h:995 kernel/printk/printk.c:762)
[   15.551263][  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)
[   15.551265][  T158]  devkmsg_write.cold (kernel/printk/printk.c:796)
[   15.551268][  T158]  ? vprintk_default (kernel/printk/printk.c:2494)
[   15.551270][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   15.551272][  T158]  ? vfs_lock_file (./include/linux/fs.h:1348)
[   15.551276][  T158]  ? vprintk_default (kernel/printk/printk.c:2494)
[   15.551279][  T158]  new_sync_write (fs/read_write.c:595)
[   15.551283][  T158]  ? new_sync_read (./include/linux/ioprio.h:41)
[   15.551285][  T158]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   15.551293][  T158]  vfs_write (fs/read_write.c:687)
[   15.551297][  T158]  ksys_write (fs/read_write.c:739)
[   15.551300][  T158]  ? __ia32_sys_read (fs/read_write.c:723)
[   15.551301][  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)
[   15.551304][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   15.551307][  T158]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   15.551310][  T158]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   15.551313][  T158]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   15.551316][  T158] RIP: 0033:0x7f2840fee54e
[   15.551319][  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
[   15.551321][  T158] RSP: 002b:00007ffde420e740 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[   15.551324][  T158] RAX: ffffffffffffffda RBX: 00007f284116f580 RCX: 00007f2840fee54e
[   15.551326][  T158] RDX: 0000000000000023 RSI: 000055a86a2e8790 RDI: 0000000000000001
[   15.551327][  T158] RBP: 00007ffde420e750 R08: 0000000000000000 R09: 0000000000000000
[   15.551328][  T158] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000023
[   15.551329][  T158] R13: 0000000000000023 R14: 000055a86a2e8790 R15: 0000000000000000
| [   17.184284][  T158] softirqs last disabled at (221260): 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))
| [   17.184286][  T158] Preemption disabled at:
| [   17.184287][  T158] vprintk_emit (kernel/printk/printk.c:2471)
| [   17.184296][  T158] Tainted: [W]=WARN
[   17.184297][  T158] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   17.184300][  T158] Call Trace:
[   17.184302][  T158]  <TASK>
[   17.184303][  T158]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   17.184308][  T158]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   17.184310][  T158]  __might_resched.cold (kernel/sched/core.c:9234)
[   17.184315][  T158]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   17.184319][  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)
[   17.184323][  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))
[   17.184325][  T158]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   17.184331][  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)
[   17.184333][  T158]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   17.184336][  T158]  put_chars (drivers/char/virtio_console.c:1176)
[   17.184339][  T158]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   17.184340][  T158]  ? printk_get_next_message (kernel/printk/printk.c:3072)
[   17.184343][  T158]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   17.184346][  T158]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   17.184351][  T158]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   17.184353][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   17.184355][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   17.184359][  T158]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   17.184362][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   17.184365][  T158]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   17.184368][  T158]  console_emit_next_record (kernel/printk/printk.c:3183)
[   17.184372][  T158]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   17.184376][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   17.184378][  T158]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   17.184382][  T158]  console_flush_one_record (kernel/printk/printk.c:3268)
[   17.184386][  T158]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   17.184388][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   17.184393][  T158]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   17.184395][  T158]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   17.184397][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   17.184399][  T158]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   17.184403][  T158]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   17.184404][  T158]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   17.184407][  T158]  vprintk_emit (kernel/printk/printk.c:2479)
[   17.184411][  T158]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   17.184414][  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)
[   17.184420][  T158]  devkmsg_emit.constprop.0 (kernel/printk/printk.c:733)
[   17.184424][  T158]  ? vprintk_emit.cold (kernel/printk/printk.c:2449)
[   17.184428][  T158]  ? __kmalloc_noprof (mm/slub.c:5415 mm/slub.c:5439)
[   17.184430][  T158]  ? idr_get_free (??:?)
[   17.184433][  T158]  ? devkmsg_write (./include/linux/slab.h:995 kernel/printk/printk.c:762)
[   17.184436][  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)
[   17.184439][  T158]  devkmsg_write.cold (kernel/printk/printk.c:796)
[   17.184442][  T158]  ? vprintk_default (kernel/printk/printk.c:2494)
[   17.184444][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   17.184446][  T158]  ? vfs_lock_file (./include/linux/fs.h:1348)
[   17.184450][  T158]  ? vprintk_default (kernel/printk/printk.c:2494)
[   17.184453][  T158]  new_sync_write (fs/read_write.c:595)
[   17.184457][  T158]  ? new_sync_read (./include/linux/ioprio.h:41)
[   17.184459][  T158]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   17.184467][  T158]  vfs_write (fs/read_write.c:687)
[   17.184471][  T158]  ksys_write (fs/read_write.c:739)
[   17.184474][  T158]  ? __ia32_sys_read (fs/read_write.c:723)
[   17.184476][  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)
[   17.184478][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   17.184482][  T158]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   17.184484][  T158]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   17.184487][  T158]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   17.184489][  T158] RIP: 0033:0x7f2840fee54e
[   17.184493][  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
[   17.184495][  T158] RSP: 002b:00007ffde420e740 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[   17.184498][  T158] RAX: ffffffffffffffda RBX: 00007f284116f580 RCX: 00007f2840fee54e
[   17.184499][  T158] RDX: 0000000000000023 RSI: 000055a86a2e8790 RDI: 0000000000000001
[   17.184500][  T158] RBP: 00007ffde420e750 R08: 0000000000000000 R09: 0000000000000000
[   17.184502][  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