======================================
| [    8.702177][  T169] softirqs last disabled at (24807): __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767)
| [    8.702180][  T169] Preemption disabled at:
| [    8.702180][  T169] vprintk_emit (kernel/printk/printk.c:2471)
| [    8.702189][  T169] Tainted: [W]=WARN
[    8.702190][  T169] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[    8.702191][  T169] Call Trace:
[    8.702193][  T169]  <TASK>
[    8.702194][  T169]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[    8.702199][  T169]  ? vprintk_emit (kernel/printk/printk.c:2471)
[    8.702201][  T169]  __might_resched.cold (kernel/sched/core.c:9234)
[    8.702206][  T169]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[    8.702210][  T169]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[    8.702214][  T169]  __kmalloc_noprof (./include/linux/sched/mm.h:322 (discriminator 2) mm/slub.c:4636 (discriminator 2) mm/slub.c:4974 (discriminator 2) mm/slub.c:5413 (discriminator 2) mm/slub.c:5439 (discriminator 2))
[    8.702216][  T169]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[    8.702222][  T169]  ? do_raw_spin_unlock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:32 ./include/asm-generic/qspinlock.h:58 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141)
[    8.702224][  T169]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[    8.702227][  T169]  put_chars (drivers/char/virtio_console.c:1176)
[    8.702230][  T169]  ? __send_to_port (drivers/char/virtio_console.c:654)
[    8.702233][  T169]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[    8.702238][  T169]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[    8.702244][  T169]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[    8.702246][  T169]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[    8.702250][  T169]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[    8.702253][  T169]  console_emit_next_record (kernel/printk/printk.c:3183)
[    8.702257][  T169]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[    8.702260][  T169]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[    8.702263][  T169]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[    8.702266][  T169]  console_flush_one_record (kernel/printk/printk.c:3268)
[    8.702270][  T169]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[    8.702271][  T169]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[    8.702276][  T169]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[    8.702278][  T169]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[    8.702280][  T169]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[    8.702282][  T169]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[    8.702285][  T169]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[    8.702287][  T169]  ? vprintk_emit (kernel/printk/printk.c:2478)
[    8.702290][  T169]  vprintk_emit (kernel/printk/printk.c:2479)
[    8.702293][  T169]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[    8.702295][  T169]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[    8.702298][  T169]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[    8.702300][  T169]  ? fast_dput (./include/linux/rcupdate.h:319 (discriminator 2) ./include/linux/rcupdate.h:880 (discriminator 2) fs/dcache.c:948 (discriminator 2))
[    8.702304][  T169]  ? cleanup_netconsole (./include/linux/list.h:99 (discriminator 2) ./include/linux/list.h:169 (discriminator 2) ./include/linux/list.h:206 (discriminator 2) ./include/linux/configfs.h:112 (discriminator 2) drivers/net/netconsole.c:1718 (discriminator 2)) netconsole
[    8.702308][  T169]  _printk (kernel/printk/printk.c:2504)
[    8.702312][  T169]  ? snapshot_read.cold (user.c:?)
[    8.702315][  T169]  ? __up_write (kernel/locking/rwsem.c:1422 (discriminator 1))
[    8.702318][  T169]  ? cleanup_netconsole (./include/linux/list.h:99 (discriminator 2) ./include/linux/list.h:169 (discriminator 2) ./include/linux/list.h:206 (discriminator 2) ./include/linux/configfs.h:112 (discriminator 2) drivers/net/netconsole.c:1718 (discriminator 2)) netconsole
[    8.702321][  T169]  ? configfs_register_subsystem (./include/linux/instrumented.h:112 ./include/linux/atomic/atomic-instrumented.h:1383 fs/configfs/dir.c:173 fs/configfs/dir.c:171 fs/configfs/dir.c:1929)
[    8.702326][  T169] init_netconsole (drivers/net/netconsole.c:1286) netconsole
[    8.702329][  T169]  ? cleanup_netconsole (./include/linux/list.h:99 (discriminator 2) ./include/linux/list.h:169 (discriminator 2) ./include/linux/list.h:206 (discriminator 2) ./include/linux/configfs.h:112 (discriminator 2) drivers/net/netconsole.c:1718 (discriminator 2)) netconsole
[    8.702336][  T169]  ? cleanup_netconsole (./include/linux/list.h:99 (discriminator 2) ./include/linux/list.h:169 (discriminator 2) ./include/linux/list.h:206 (discriminator 2) ./include/linux/configfs.h:112 (discriminator 2) drivers/net/netconsole.c:1718 (discriminator 2)) netconsole
[    8.702338][  T169]  do_one_initcall (init/main.c:1357)
[    8.702342][  T169]  ? trace_event_raw_event_initcall_level (./include/trace/events/initcall.h:10)
[    8.702347][  T169]  ? do_init_module (./include/linux/slab.h:991 (discriminator 1) kernel/module/main.c:3105 (discriminator 1))
[    8.702349][  T169]  ? kasan_unpoison (mm/kasan/shadow.c:146 mm/kasan/shadow.c:178)
[    8.702354][  T169]  do_init_module (kernel/module/main.c:3117)
[    8.702358][  T169]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4488)
[    8.702362][  T169]  ? free_module (./include/trace/events/module.h:50 (discriminator 19))
[    8.702365][  T169]  ? kfree (./include/linux/kasan.h:235 mm/slub.c:2748 mm/slub.c:6499 mm/slub.c:6792)
[    8.702368][  T169]  load_module (kernel/module/main.c:3593)
[    8.702375][  T169]  ? layout_and_allocate.isra.0 (kernel/module/main.c:3016)
[    8.702378][  T169]  ? __ia32_sys_fsconfig (??:?)
[    8.702382][  T169]  ? ovl_real_file (fs/overlayfs/file.c:195)
[    8.702385][  T169]  ? backing_file_read_iter (fs/backing-file.c:211)
[    8.702389][  T169]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[    8.702392][  T169]  init_module_from_file (kernel/module/main.c:3790)
[    8.702396][  T169]  ? __do_sys_init_module (kernel/module/main.c:3664)
[    8.702403][  T169]  ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[    8.702407][  T169]  ? do_raw_spin_unlock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:32 ./include/asm-generic/qspinlock.h:58 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141)
[    8.702409][  T169]  idempotent_init_module (kernel/module/main.c:3802)
[    8.702412][  T169]  ? init_module_from_file (kernel/module/main.c:3791)
[    8.702418][  T169]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[    8.702420][  T169]  ? cap_capable (./include/trace/events/capability.h:26 (discriminator 22) security/commoncap.c:130 (discriminator 22))
[    8.702426][  T169]  __x64_sys_finit_module (kernel/module/main.c:3828 kernel/module/main.c:3812 kernel/module/main.c:3812)
[    8.702427][  T169]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[    8.702432][  T169]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[    8.702433][  T169]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[    8.702436][  T169]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[    8.702438][  T169] RIP: 0033:0x7f944fbe437d
[    8.702441][  T169] Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 4b aa 0f 00 f7 d8 64 89 01 48
All code
========
   0:	ff c3                	inc    %ebx
   2:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
   9:	00 00 00 
   c:	90                   	nop
   d:	f3 0f 1e fa          	endbr64
  11:	48 89 f8             	mov    %rdi,%rax
  14:	48 89 f7             	mov    %rsi,%rdi
  17:	48 89 d6             	mov    %rdx,%rsi
  1a:	48 89 ca             	mov    %rcx,%rdx
  1d:	4d 89 c2             	mov    %r8,%r10
  20:	4d 89 c8             	mov    %r9,%r8
  23:	4c 8b 4c 24 08       	mov    0x8(%rsp),%r9
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 4b aa 0f 00 	mov    0xfaa4b(%rip),%rcx        # 0xfaa85
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 4b aa 0f 00 	mov    0xfaa4b(%rip),%rcx        # 0xfaa5b
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[    8.702443][  T169] RSP: 002b:00007ffd0e3372e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000139
[    8.702446][  T169] RAX: ffffffffffffffda RBX: 0000564e48147700 RCX: 00007f944fbe437d
[    8.702447][  T169] RDX: 0000000000000000 RSI: 0000564e3d63fffd RDI: 0000000000000005
[    8.702448][  T169] RBP: 00007ffd0e337380 R08: 0000000000000000 R09: 0000000000000000
[    8.702449][  T169] R10: 0000000000000000 R11: 0000000000000246 R12: 0000564e3d63fffd
[    8.702449][  T169] R13: 0000564e48147810 R14: 0000000000040000 R15: 0000000000000000
| [   10.660369][  T157] softirqs last disabled at (151648): 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))
| [   10.660371][  T157] Preemption disabled at:
| [   10.660372][  T157] vprintk_emit (kernel/printk/printk.c:2471)
| [   10.660380][  T157] Tainted: [W]=WARN
[   10.660381][  T157] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   10.660383][  T157] Call Trace:
[   10.660385][  T157]  <TASK>
[   10.660387][  T157]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   10.660392][  T157]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   10.660394][  T157]  __might_resched.cold (kernel/sched/core.c:9234)
[   10.660398][  T157]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   10.660402][  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)
[   10.660406][  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))
[   10.660408][  T157]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   10.660414][  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)
[   10.660416][  T157]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   10.660419][  T157]  put_chars (drivers/char/virtio_console.c:1176)
[   10.660422][  T157]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   10.660424][  T157]  ? printk_get_next_message (kernel/printk/printk.c:3072)
[   10.660427][  T157]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   10.660430][  T157]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   10.660434][  T157]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   10.660437][  T157]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   10.660438][  T157]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   10.660442][  T157]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   10.660445][  T157]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   10.660448][  T157]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   10.660452][  T157]  console_emit_next_record (kernel/printk/printk.c:3183)
[   10.660455][  T157]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   10.660459][  T157]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   10.660461][  T157]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   10.660468][  T157]  console_flush_one_record (kernel/printk/printk.c:3268)
[   10.660472][  T157]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   10.660474][  T157]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   10.660478][  T157]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   10.660481][  T157]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   10.660482][  T157]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   10.660484][  T157]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   10.660488][  T157]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   10.660489][  T157]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   10.660492][  T157]  vprintk_emit (kernel/printk/printk.c:2479)
[   10.660495][  T157]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   10.660498][  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)
[   10.660504][  T157]  devkmsg_emit.constprop.0 (kernel/printk/printk.c:733)
[   10.660508][  T157]  ? vprintk_emit.cold (kernel/printk/printk.c:2449)
[   10.660512][  T157]  ? __kmalloc_noprof (mm/slub.c:5415 mm/slub.c:5439)
[   10.660514][  T157]  ? idr_get_free (??:?)
[   10.660518][  T157]  ? devkmsg_write (./include/linux/slab.h:995 kernel/printk/printk.c:762)
[   10.660520][  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)
[   10.660523][  T157]  devkmsg_write.cold (kernel/printk/printk.c:796)
[   10.660526][  T157]  ? vprintk_default (kernel/printk/printk.c:2494)
[   10.660528][  T157]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   10.660530][  T157]  ? vfs_lock_file (./include/linux/fs.h:1348)
[   10.660534][  T157]  ? vprintk_default (kernel/printk/printk.c:2494)
[   10.660536][  T157]  new_sync_write (fs/read_write.c:595)
[   10.660541][  T157]  ? new_sync_read (./include/linux/ioprio.h:41)
[   10.660542][  T157]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   10.660550][  T157]  vfs_write (fs/read_write.c:687)
[   10.660554][  T157]  ksys_write (fs/read_write.c:739)
[   10.660557][  T157]  ? __ia32_sys_read (fs/read_write.c:723)
[   10.660559][  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)
[   10.660561][  T157]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   10.660564][  T157]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   10.660567][  T157]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   10.660570][  T157]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   10.660572][  T157] RIP: 0033:0x7f4d9670754e
[   10.660576][  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
[   10.660578][  T157] RSP: 002b:00007ffdfb9a0980 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[   10.660580][  T157] RAX: ffffffffffffffda RBX: 00007f4d96888580 RCX: 00007f4d9670754e
[   10.660582][  T157] RDX: 0000000000000025 RSI: 000056307039bff0 RDI: 0000000000000001
[   10.660583][  T157] RBP: 00007ffdfb9a0990 R08: 0000000000000000 R09: 0000000000000000
[   10.660584][  T157] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000025
[   10.660585][  T157] R13: 0000000000000025 R14: 000056307039bff0 R15: 0000000000000000
| [   11.690194][  T267] softirqs last disabled at (11728): 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))
| [   11.690196][  T267] Preemption disabled at:
| [   11.690197][  T267] vprintk_emit (kernel/printk/printk.c:2471)
| [   11.690206][  T267] Tainted: [W]=WARN
[   11.690207][  T267] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   11.690208][  T267] Call Trace:
[   11.690210][  T267]  <TASK>
[   11.690211][  T267]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   11.690216][  T267]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   11.690218][  T267]  __might_resched.cold (kernel/sched/core.c:9234)
[   11.690223][  T267]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   11.690226][  T267]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   11.690231][  T267]  __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))
[   11.690233][  T267]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   11.690239][  T267]  ? 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)
[   11.690241][  T267]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   11.690244][  T267]  put_chars (drivers/char/virtio_console.c:1176)
[   11.690247][  T267]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   11.690248][  T267]  ? printk_get_next_message (kernel/printk/printk.c:3072)
[   11.690251][  T267]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   11.690254][  T267]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   11.690259][  T267]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   11.690261][  T267]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   11.690263][  T267]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   11.690267][  T267]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   11.690270][  T267]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   11.690273][  T267]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   11.690277][  T267]  console_emit_next_record (kernel/printk/printk.c:3183)
[   11.690280][  T267]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   11.690284][  T267]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   11.690286][  T267]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   11.690290][  T267]  console_flush_one_record (kernel/printk/printk.c:3268)
[   11.690294][  T267]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   11.690295][  T267]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   11.690300][  T267]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   11.690302][  T267]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   11.690304][  T267]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   11.690306][  T267]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   11.690309][  T267]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   11.690311][  T267]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   11.690314][  T267]  vprintk_emit (kernel/printk/printk.c:2479)
[   11.690317][  T267]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   11.690320][  T267]  ? _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)
[   11.690326][  T267]  devkmsg_emit.constprop.0 (kernel/printk/printk.c:733)
[   11.690329][  T267]  ? vprintk_emit.cold (kernel/printk/printk.c:2449)
[   11.690333][  T267]  ? __kmalloc_noprof (mm/slub.c:5415 mm/slub.c:5439)
[   11.690335][  T267]  ? idr_get_free (??:?)
[   11.690339][  T267]  ? devkmsg_write (./include/linux/slab.h:995 kernel/printk/printk.c:762)
[   11.690342][  T267]  ? _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)
[   11.690345][  T267]  devkmsg_write.cold (kernel/printk/printk.c:796)
[   11.690347][  T267]  ? vprintk_default (kernel/printk/printk.c:2494)
[   11.690349][  T267]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   11.690351][  T267]  ? vfs_lock_file (./include/linux/fs.h:1348)
[   11.690355][  T267]  ? vprintk_default (kernel/printk/printk.c:2494)
[   11.690358][  T267]  new_sync_write (fs/read_write.c:595)
[   11.690362][  T267]  ? new_sync_read (./include/linux/ioprio.h:41)
[   11.690364][  T267]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   11.690372][  T267]  vfs_write (fs/read_write.c:687)
[   11.690376][  T267]  ksys_write (fs/read_write.c:739)
[   11.690379][  T267]  ? __ia32_sys_read (fs/read_write.c:723)
[   11.690380][  T267]  ? 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)
[   11.690383][  T267]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   11.690386][  T267]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   11.690388][  T267]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   11.690391][  T267]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   11.690393][  T267] RIP: 0033:0x7f4d9670754e
[   11.690397][  T267] 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
[   11.690399][  T267] RSP: 002b:00007ffdfb9a0380 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[   11.690402][  T267] RAX: ffffffffffffffda RBX: 00007f4d96888580 RCX: 00007f4d9670754e
[   11.690403][  T267] RDX: 0000000000000037 RSI: 000056307039bff0 RDI: 0000000000000001
[   11.690404][  T267] RBP: 00007ffdfb9a0390 R08: 0000000000000000 R09: 0000000000000000
[   11.690405][  T267] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000037
[   11.690406][  T267] R13: 0000000000000037 R14: 000056307039bff0 R15: 0000000000000000
| [   12.689542][  T157] softirqs last disabled at (607497): __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767)
| [   12.689545][  T157] Preemption disabled at:
| [   12.689546][  T157] vprintk_emit (kernel/printk/printk.c:2471)
| [   12.689555][  T157] Tainted: [W]=WARN
[   12.689555][  T157] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   12.689557][  T157] Call Trace:
[   12.689559][  T157]  <TASK>
[   12.689560][  T157]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   12.689565][  T157]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   12.689568][  T157]  __might_resched.cold (kernel/sched/core.c:9234)
[   12.689572][  T157]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   12.689576][  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)
[   12.689580][  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))
[   12.689582][  T157]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   12.689587][  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)
[   12.689590][  T157]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   12.689593][  T157]  put_chars (drivers/char/virtio_console.c:1176)
[   12.689595][  T157]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   12.689597][  T157]  ? printk_get_next_message (kernel/printk/printk.c:3072)
[   12.689600][  T157]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   12.689603][  T157]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   12.689607][  T157]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   12.689609][  T157]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   12.689610][  T157]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   12.689615][  T157]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   12.689618][  T157]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   12.689620][  T157]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   12.689624][  T157]  console_emit_next_record (kernel/printk/printk.c:3183)
[   12.689627][  T157]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   12.689631][  T157]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   12.689633][  T157]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   12.689637][  T157]  console_flush_one_record (kernel/printk/printk.c:3268)
[   12.689641][  T157]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   12.689642][  T157]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   12.689647][  T157]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   12.689650][  T157]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   12.689651][  T157]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   12.689653][  T157]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   12.689657][  T157]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   12.689658][  T157]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   12.689661][  T157]  vprintk_emit (kernel/printk/printk.c:2479)
[   12.689664][  T157]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   12.689667][  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)
[   12.689673][  T157]  devkmsg_emit.constprop.0 (kernel/printk/printk.c:733)
[   12.689676][  T157]  ? vprintk_emit.cold (kernel/printk/printk.c:2449)
[   12.689680][  T157]  ? __kmalloc_noprof (mm/slub.c:5415 mm/slub.c:5439)
[   12.689682][  T157]  ? idr_get_free (??:?)
[   12.689685][  T157]  ? devkmsg_write (./include/linux/slab.h:995 kernel/printk/printk.c:762)
[   12.689688][  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)
[   12.689691][  T157]  devkmsg_write.cold (kernel/printk/printk.c:796)
[   12.689694][  T157]  ? vprintk_default (kernel/printk/printk.c:2494)
[   12.689695][  T157]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   12.689698][  T157]  ? vfs_lock_file (./include/linux/fs.h:1348)
[   12.689702][  T157]  ? vprintk_default (kernel/printk/printk.c:2494)
[   12.689704][  T157]  new_sync_write (fs/read_write.c:595)
[   12.689709][  T157]  ? new_sync_read (./include/linux/ioprio.h:41)
[   12.689710][  T157]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   12.689718][  T157]  vfs_write (fs/read_write.c:687)
[   12.689722][  T157]  ksys_write (fs/read_write.c:739)
[   12.689725][  T157]  ? __ia32_sys_read (fs/read_write.c:723)
[   12.689726][  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)
[   12.689729][  T157]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   12.689732][  T157]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   12.689734][  T157]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   12.689737][  T157]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   12.689739][  T157] RIP: 0033:0x7f4d9670754e
[   12.689743][  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
[   12.689745][  T157] RSP: 002b:00007ffdfb9a0980 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[   12.689748][  T157] RAX: ffffffffffffffda RBX: 00007f4d96888580 RCX: 00007f4d9670754e
[   12.689749][  T157] RDX: 0000000000000026 RSI: 000056307039bff0 RDI: 0000000000000001
[   12.689750][  T157] RBP: 00007ffdfb9a0990 R08: 0000000000000000 R09: 0000000000000000
[   12.689751][  T157] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000026
[   12.689752][  T157] R13: 0000000000000026 R14: 000056307039bff0 R15: 0000000000000000
| [   13.730421][  T157] softirqs last disabled at (791092): 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))
| [   13.730424][  T157] Preemption disabled at:
| [   13.730425][  T157] vprintk_emit (kernel/printk/printk.c:2471)
| [   13.730433][  T157] Tainted: [W]=WARN
[   13.730434][  T157] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   13.730436][  T157] Call Trace:
[   13.730438][  T157]  <TASK>
[   13.730439][  T157]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   13.730444][  T157]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   13.730446][  T157]  __might_resched.cold (kernel/sched/core.c:9234)
[   13.730451][  T157]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   13.730454][  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)
[   13.730459][  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))
[   13.730461][  T157]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   13.730472][  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)
[   13.730474][  T157]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   13.730477][  T157]  put_chars (drivers/char/virtio_console.c:1176)
[   13.730480][  T157]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   13.730481][  T157]  ? printk_get_next_message (kernel/printk/printk.c:3072)
[   13.730485][  T157]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   13.730487][  T157]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   13.730492][  T157]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   13.730494][  T157]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   13.730495][  T157]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   13.730499][  T157]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   13.730502][  T157]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   13.730505][  T157]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   13.730509][  T157]  console_emit_next_record (kernel/printk/printk.c:3183)
[   13.730512][  T157]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   13.730516][  T157]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   13.730518][  T157]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   13.730522][  T157]  console_flush_one_record (kernel/printk/printk.c:3268)
[   13.730526][  T157]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   13.730527][  T157]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   13.730532][  T157]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   13.730535][  T157]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   13.730536][  T157]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   13.730538][  T157]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   13.730542][  T157]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   13.730543][  T157]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   13.730546][  T157]  vprintk_emit (kernel/printk/printk.c:2479)
[   13.730549][  T157]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   13.730552][  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)
[   13.730558][  T157]  devkmsg_emit.constprop.0 (kernel/printk/printk.c:733)
[   13.730562][  T157]  ? vprintk_emit.cold (kernel/printk/printk.c:2449)
[   13.730566][  T157]  ? __kmalloc_noprof (mm/slub.c:5415 mm/slub.c:5439)
[   13.730567][  T157]  ? idr_get_free (??:?)
[   13.730571][  T157]  ? devkmsg_write (./include/linux/slab.h:995 kernel/printk/printk.c:762)
[   13.730574][  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)
[   13.730577][  T157]  devkmsg_write.cold (kernel/printk/printk.c:796)
[   13.730580][  T157]  ? vprintk_default (kernel/printk/printk.c:2494)
[   13.730581][  T157]  ? handle_pte_fault (mm/memory.c:6582)
[   13.730586][  T157]  ? do_numa_page.isra.0 (mm/memory.c:6319 (discriminator 1))
[   13.730589][  T157]  ? vprintk_default (kernel/printk/printk.c:2494)
[   13.730591][  T157]  new_sync_write (fs/read_write.c:595)
[   13.730596][  T157]  ? new_sync_read (./include/linux/ioprio.h:41)
[   13.730597][  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))
[   13.730605][  T157]  vfs_write (fs/read_write.c:687)
[   13.730609][  T157]  ksys_write (fs/read_write.c:739)
[   13.730612][  T157]  ? __ia32_sys_read (fs/read_write.c:723)
[   13.730614][  T157]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   13.730616][  T157]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   13.730620][  T157]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   13.730622][  T157]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   13.730625][  T157]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   13.730627][  T157] RIP: 0033:0x7f4d9670754e
[   13.730630][  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
[   13.730632][  T157] RSP: 002b:00007ffdfb9a0980 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[   13.730635][  T157] RAX: ffffffffffffffda RBX: 00007f4d96888580 RCX: 00007f4d9670754e
[   13.730637][  T157] RDX: 0000000000000027 RSI: 000056307039bff0 RDI: 0000000000000001
[   13.730638][  T157] RBP: 00007ffdfb9a0990 R08: 0000000000000000 R09: 0000000000000000
[   13.730639][  T157] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000027


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