======================================
| [   10.811580][  T179] softirqs last disabled at (60315): __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767)
| [   10.811583][  T179] Preemption disabled at:
| [   10.811583][  T179] vprintk_emit (kernel/printk/printk.c:2471)
| [   10.811593][  T179] Tainted: [W]=WARN
[   10.811593][  T179] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   10.811595][  T179] Call Trace:
[   10.811597][  T179]  <TASK>
[   10.811598][  T179]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   10.811604][  T179]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   10.811606][  T179]  __might_resched.cold (kernel/sched/core.c:9234)
[   10.811615][  T179]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   10.811619][  T179]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   10.811624][  T179]  __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))
[   10.811627][  T179]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   10.811633][  T179]  ? 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)
[   10.811636][  T179]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   10.811639][  T179]  put_chars (drivers/char/virtio_console.c:1176)
[   10.811642][  T179]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   10.811643][  T179]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   10.811648][  T179]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   10.811651][  T179]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   10.811655][  T179]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   10.811658][  T179]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   10.811664][  T179]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   10.811666][  T179]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   10.811671][  T179]  console_emit_next_record (kernel/printk/printk.c:3183)
[   10.811675][  T179]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   10.811677][  T179]  ? console_flush_one_record (./include/linux/rcupdate.h:314 (discriminator 2) ./include/linux/srcu.h:439 (discriminator 2) kernel/printk/printk.c:291 (discriminator 2) kernel/printk/printk.c:3246 (discriminator 2))
[   10.811681][  T179]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   10.811683][  T179]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   10.811687][  T179]  console_flush_one_record (kernel/printk/printk.c:3268)
[   10.811691][  T179]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   10.811693][  T179]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   10.811698][  T179]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   10.811701][  T179]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   10.811703][  T179]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   10.811705][  T179]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   10.811709][  T179]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   10.811711][  T179]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   10.811714][  T179]  vprintk_emit (kernel/printk/printk.c:2479)
[   10.811718][  T179]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   10.811724][  T179]  ? ppp_cleanup (drivers/net/ppp/ppp_generic.c:1603) ppp_generic
[   10.811728][  T179]  _printk (kernel/printk/printk.c:2504)
[   10.811732][  T179]  ? snapshot_read.cold (user.c:?)
[   10.811738][  T179]  ? do_one_initcall (./include/linux/instrumented.h:82 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 ./include/linux/cpumask.h:650 ./include/linux/cpumask.h:1232 ./include/trace/events/initcall.h:27 init/main.c:1356)
[   10.811742][  T179] ppp_init (ppp_generic.mod.c:?) ppp_generic
[   10.811745][  T179]  do_one_initcall (init/main.c:1357)
[   10.811748][  T179]  ? trace_event_raw_event_initcall_level (./include/trace/events/initcall.h:10)
[   10.811752][  T179]  ? do_init_module (./include/linux/slab.h:991 (discriminator 1) kernel/module/main.c:3105 (discriminator 1))
[   10.811755][  T179]  ? kasan_unpoison (mm/kasan/shadow.c:146 mm/kasan/shadow.c:178)
[   10.811760][  T179]  do_init_module (kernel/module/main.c:3117)
[   10.811764][  T179]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4488)
[   10.811768][  T179]  ? free_module (./include/trace/events/module.h:50 (discriminator 19))
[   10.811771][  T179]  ? kfree (./include/linux/kasan.h:235 mm/slub.c:2748 mm/slub.c:6499 mm/slub.c:6792)
[   10.811776][  T179]  load_module (kernel/module/main.c:3593)
[   10.811783][  T179]  ? layout_and_allocate.isra.0 (kernel/module/main.c:3016)
[   10.811788][  T179]  ? backing_file_read_iter (fs/backing-file.c:211)
[   10.811792][  T179]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   10.811796][  T179]  init_module_from_file (kernel/module/main.c:3790)
[   10.811799][  T179]  ? __do_sys_init_module (kernel/module/main.c:3664)
[   10.811807][  T179]  ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[   10.811811][  T179]  ? 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)
[   10.811814][  T179]  idempotent_init_module (kernel/module/main.c:3802)
[   10.811817][  T179]  ? init_module_from_file (kernel/module/main.c:3791)
[   10.811824][  T179]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   10.811826][  T179]  ? cap_capable (./include/trace/events/capability.h:26 (discriminator 22) security/commoncap.c:130 (discriminator 22))
[   10.811832][  T179]  __x64_sys_finit_module (kernel/module/main.c:3828 kernel/module/main.c:3812 kernel/module/main.c:3812)
[   10.811835][  T179]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[   10.811838][  T179]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   10.811841][  T179]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   10.811844][  T179]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   10.811846][  T179] RIP: 0033:0x7f3945afc37d
[   10.811850][  T179] Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 4b aa 0f 00 f7 d8 64 89 01 48
All code
========
   0:	ff c3                	inc    %ebx
   2:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
   9:	00 00 00 
   c:	90                   	nop
   d:	f3 0f 1e fa          	endbr64
  11:	48 89 f8             	mov    %rdi,%rax
  14:	48 89 f7             	mov    %rsi,%rdi
  17:	48 89 d6             	mov    %rdx,%rsi
  1a:	48 89 ca             	mov    %rcx,%rdx
  1d:	4d 89 c2             	mov    %r8,%r10
  20:	4d 89 c8             	mov    %r9,%r8
  23:	4c 8b 4c 24 08       	mov    0x8(%rsp),%r9
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 4b aa 0f 00 	mov    0xfaa4b(%rip),%rcx        # 0xfaa85
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 4b aa 0f 00 	mov    0xfaa4b(%rip),%rcx        # 0xfaa5b
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[   10.811851][  T179] RSP: 002b:00007ffc64c46338 EFLAGS: 00000246 ORIG_RAX: 0000000000000139
[   10.811854][  T179] RAX: ffffffffffffffda RBX: 000055702b23bd20 RCX: 00007f3945afc37d
[   10.811855][  T179] RDX: 0000000000000000 RSI: 0000556fffbceffd RDI: 0000000000000006
[   10.811856][  T179] RBP: 00007ffc64c463d0 R08: 0000000000000000 R09: 0000000000000000
[   10.811857][  T179] R10: 0000000000000000 R11: 0000000000000246 R12: 0000556fffbceffd
[   10.811858][  T179] R13: 000055702b23bcd0 R14: 0000000000040000 R15: 0000000000000000
| [   14.248237][  T198] softirqs last disabled at (22535): __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767)
| [   14.248239][  T198] Preemption disabled at:
| [   14.248239][  T198] vprintk_emit (kernel/printk/printk.c:2471)
| [   14.248249][  T198] Tainted: [W]=WARN
[   14.248250][  T198] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   14.248252][  T198] Call Trace:
[   14.248254][  T198]  <TASK>
[   14.248255][  T198]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   14.248261][  T198]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   14.248263][  T198]  __might_resched.cold (kernel/sched/core.c:9234)
[   14.248268][  T198]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   14.248272][  T198]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   14.248277][  T198]  __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))
[   14.248280][  T198]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   14.248286][  T198]  ? 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)
[   14.248288][  T198]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   14.248292][  T198]  put_chars (drivers/char/virtio_console.c:1176)
[   14.248295][  T198]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   14.248296][  T198]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   14.248301][  T198]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   14.248303][  T198]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   14.248308][  T198]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   14.248312][  T198]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   14.248317][  T198]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   14.248319][  T198]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   14.248325][  T198]  console_emit_next_record (kernel/printk/printk.c:3183)
[   14.248329][  T198]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   14.248330][  T198]  ? console_flush_one_record (./include/linux/rcupdate.h:314 (discriminator 2) ./include/linux/srcu.h:439 (discriminator 2) kernel/printk/printk.c:291 (discriminator 2) kernel/printk/printk.c:3246 (discriminator 2))
[   14.248334][  T198]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   14.248336][  T198]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   14.248340][  T198]  console_flush_one_record (kernel/printk/printk.c:3268)
[   14.248344][  T198]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   14.248346][  T198]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   14.248351][  T198]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   14.248354][  T198]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   14.248356][  T198]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   14.248358][  T198]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   14.248362][  T198]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   14.248364][  T198]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   14.248367][  T198]  vprintk_emit (kernel/printk/printk.c:2479)
[   14.248371][  T198]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   14.248377][  T198]  ? ppp_cleanup (drivers/net/ppp/ppp_generic.c:1603) ppp_generic
[   14.248380][  T198]  _printk (kernel/printk/printk.c:2504)
[   14.248384][  T198]  ? snapshot_read.cold (user.c:?)
[   14.248388][  T198]  ? ppp_cleanup (drivers/net/ppp/ppp_generic.c:1603) ppp_generic
[   14.248391][  T198]  ? 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)
[   14.248393][  T198]  ? ppp_cleanup (drivers/net/ppp/ppp_generic.c:1603) ppp_generic
[   14.248396][  T198]  ? 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)
[   14.248399][  T198] bsdcomp_init (drivers/net/ppp/bsd_comp.c:297) bsd_comp
[   14.248401][  T198]  do_one_initcall (init/main.c:1357)
[   14.248405][  T198]  ? trace_event_raw_event_initcall_level (./include/trace/events/initcall.h:10)
[   14.248409][  T198]  ? do_init_module (./include/linux/slab.h:991 (discriminator 1) kernel/module/main.c:3105 (discriminator 1))
[   14.248413][  T198]  ? kasan_unpoison (mm/kasan/shadow.c:146 mm/kasan/shadow.c:178)
[   14.248418][  T198]  do_init_module (kernel/module/main.c:3117)
[   14.248422][  T198]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4488)
[   14.248425][  T198]  ? free_module (./include/trace/events/module.h:50 (discriminator 19))
[   14.248429][  T198]  ? kfree (./include/linux/kasan.h:235 mm/slub.c:2748 mm/slub.c:6499 mm/slub.c:6792)
[   14.248433][  T198]  load_module (kernel/module/main.c:3593)
[   14.248440][  T198]  ? layout_and_allocate.isra.0 (kernel/module/main.c:3016)
[   14.248444][  T198]  ? __ia32_sys_fsconfig (??:?)
[   14.248447][  T198]  ? ovl_real_file (fs/overlayfs/file.c:195)
[   14.248451][  T198]  ? backing_file_read_iter (fs/backing-file.c:211)
[   14.248454][  T198]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   14.248458][  T198]  init_module_from_file (kernel/module/main.c:3790)
[   14.248461][  T198]  ? __do_sys_init_module (kernel/module/main.c:3664)
[   14.248469][  T198]  ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[   14.248473][  T198]  ? 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)
[   14.248476][  T198]  idempotent_init_module (kernel/module/main.c:3802)
[   14.248480][  T198]  ? init_module_from_file (kernel/module/main.c:3791)
[   14.248486][  T198]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   14.248488][  T198]  ? cap_capable (./include/trace/events/capability.h:26 (discriminator 22) security/commoncap.c:130 (discriminator 22))
[   14.248494][  T198]  __x64_sys_finit_module (kernel/module/main.c:3828 kernel/module/main.c:3812 kernel/module/main.c:3812)
[   14.248496][  T198]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[   14.248500][  T198]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   14.248503][  T198]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   14.248505][  T198]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   14.248508][  T198] RIP: 0033:0x7f25c780e37d
[   14.248511][  T198] 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
[   14.248513][  T198] RSP: 002b:00007ffe93b06b58 EFLAGS: 00000246 ORIG_RAX: 0000000000000139
[   14.248515][  T198] RAX: ffffffffffffffda RBX: 0000560f021c6810 RCX: 00007f25c780e37d
[   14.248517][  T198] RDX: 0000000000000000 RSI: 0000560ed7c8cffd RDI: 0000000000000000
[   14.248518][  T198] RBP: 00007ffe93b06bf0 R08: 0000000000000000 R09: 0000000000000000
[   14.248519][  T198] R10: 0000000000000000 R11: 0000000000000246 R12: 0000560ed7c8cffd
[   14.248519][  T198] R13: 0000560f021c69e0 R14: 0000000000040000 R15: 0000000000000000
| [   18.832404][  T223] softirqs last disabled at (671967): __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767)
| [   18.832408][  T223] Preemption disabled at:
| [   18.832408][  T223] 0x0
| [   18.832421][  T223] Tainted: [W]=WARN
[   18.832422][  T223] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   18.832425][  T223] Call Trace:
[   18.832427][  T223]  <TASK>
[   18.832429][  T223]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   18.832437][  T223]  __might_resched.cold (kernel/sched/core.c:9234)
[   18.832444][  T223]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   18.832450][  T223]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   18.832457][  T223]  __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))
[   18.832461][  T223]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   18.832470][  T223]  ? 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)
[   18.832474][  T223]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   18.832479][  T223]  put_chars (drivers/char/virtio_console.c:1176)
[   18.832482][  T223]  ? prb_final_commit (kernel/printk/printk_ringbuffer.c:1842)
[   18.832486][  T223]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   18.832492][  T223]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   18.832497][  T223]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   18.832501][  T223]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   18.832507][  T223]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   18.832512][  T223]  ? mark_usage (kernel/locking/lockdep.c:4690)
[   18.832515][  T223]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   18.832517][  T223]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   18.832524][  T223]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   18.832528][  T223]  ? console_emit_next_record (kernel/printk/printk.c:3095 (discriminator 2) kernel/printk/printk.c:3182 (discriminator 2))
[   18.832533][  T223]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   18.832537][  T223]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   18.832544][  T223]  console_emit_next_record (kernel/printk/printk.c:3183)
[   18.832550][  T223]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   18.832553][  T223]  ? console_flush_one_record (./include/linux/rcupdate.h:314 (discriminator 2) ./include/linux/srcu.h:439 (discriminator 2) kernel/printk/printk.c:291 (discriminator 2) kernel/printk/printk.c:3246 (discriminator 2))
[   18.832558][  T223]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   18.832562][  T223]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   18.832568][  T223]  console_flush_one_record (kernel/printk/printk.c:3268)
[   18.832575][  T223]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   18.832578][  T223]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   18.832587][  T223]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   18.832592][  T223]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   18.832595][  T223]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   18.832598][  T223]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   18.832605][  T223]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   18.832607][  T223]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   18.832613][  T223]  vprintk_emit (kernel/printk/printk.c:2479)
[   18.832619][  T223]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   18.832625][  T223]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   18.832632][  T223]  _printk (kernel/printk/printk.c:2504)
[   18.832641][  T223]  ? snapshot_read.cold (user.c:?)
[   18.832646][  T223]  ? do_raw_spin_lock (./include/linux/instrumented.h:55 ./include/linux/atomic/atomic-instrumented.h:1301 ./include/asm-generic/qspinlock.h:112 kernel/locking/spinlock_debug.c:116)
[   18.832650][  T223]  ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[   18.832657][  T223]  ? do_raw_spin_lock (./include/linux/instrumented.h:55 ./include/linux/atomic/atomic-instrumented.h:1301 ./include/asm-generic/qspinlock.h:112 kernel/locking/spinlock_debug.c:116)
[   18.832661][  T223]  do_exit.cold (kernel/exit.c:889 (discriminator 4) kernel/exit.c:1043 (discriminator 4))
[   18.832667][  T223]  ? exit_notify (kernel/exit.c:780)
[   18.832676][  T223]  __x64_sys_exit (kernel/exit.c:1118 kernel/exit.c:1116 kernel/exit.c:1116)
[   18.832679][  T223]  x64_sys_call (./arch/x86/include/generated/asm/syscalls_64.h:61)
[   18.832683][  T223]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   18.832688][  T223]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   18.832692][  T223]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   18.832695][  T223] RIP: 0033:0x7fd82d43fc49
[   18.832699][  T223] Code: Unable to access opcode bytes at 0x7fd82d43fc1f.

Code starting with the faulting instruction
===========================================
[   18.832701][  T223] RSP: 002b:00007fd82cbfee60 EFLAGS: 00000246 ORIG_RAX: 000000000000003c
[   18.832704][  T223] RAX: ffffffffffffffda RBX: 00007fd82cbff6c0 RCX: 00007fd82d43fc49
[   18.832706][  T223] RDX: 0000000000000000 RSI: 0000000000801000 RDI: 0000000000000000
[   18.832707][  T223] RBP: 00007fd82cbfef70 R08: 0000000000000001 R09: 00007fd82cbff6c0
[   18.832709][  T223] R10: 0000000000000008 R11: 0000000000000246 R12: 00007fd82c3ff000


Finger prints:
__irq_exit_rcu:dump_stack_lvl:__kmalloc_noprof:put_chars:hvc_console_print
__irq_exit_rcu:vprintk_emit:dump_stack_lvl:__kmalloc_noprof:put_chars