======================================
| [   19.226718][  T336] softirqs last disabled at (36733): __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767)
| [   19.226720][  T336] Preemption disabled at:
| [   19.226720][  T336] vprintk_emit (kernel/printk/printk.c:2471)
| [   19.226734][  T336] Tainted: [W]=WARN
[   19.226735][  T336] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   19.226737][  T336] Call Trace:
[   19.226738][  T336]  <TASK>
[   19.226740][  T336]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   19.226745][  T336]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   19.226747][  T336]  __might_resched.cold (kernel/sched/core.c:9234)
[   19.226751][  T336]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   19.226755][  T336]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   19.226760][  T336]  __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))
[   19.226762][  T336]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   19.226769][  T336]  ? 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)
[   19.226772][  T336]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   19.226775][  T336]  put_chars (drivers/char/virtio_console.c:1176)
[   19.226778][  T336]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   19.226782][  T336]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   19.226786][  T336]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   19.226793][  T336]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   19.226795][  T336]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   19.226799][  T336]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   19.226804][  T336]  console_emit_next_record (kernel/printk/printk.c:3183)
[   19.226807][  T336]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   19.226811][  T336]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   19.226814][  T336]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   19.226817][  T336]  console_flush_one_record (kernel/printk/printk.c:3268)
[   19.226821][  T336]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   19.226823][  T336]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   19.226827][  T336]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   19.226830][  T336]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   19.226832][  T336]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   19.226834][  T336]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 18) ./include/trace/events/lock.h:23 (discriminator 18) kernel/locking/lockdep.c:5871 (discriminator 18))
[   19.226837][  T336]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   19.226838][  T336]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   19.226842][  T336]  vprintk_emit (kernel/printk/printk.c:2479)
[   19.226845][  T336]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   19.226847][  T336]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   19.226850][  T336]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   19.226851][  T336]  ? fast_dput (./include/linux/rcupdate.h:319 (discriminator 2) ./include/linux/rcupdate.h:880 (discriminator 2) fs/dcache.c:948 (discriminator 2))
[   19.226855][  T336]  ? 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
[   19.226859][  T336]  _printk (kernel/printk/printk.c:2504)
[   19.226862][  T336]  ? snapshot_read.cold (user.c:?)
[   19.226865][  T336]  ? __up_write (kernel/locking/rwsem.c:1422 (discriminator 1))
[   19.226869][  T336]  ? 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
[   19.226872][  T336]  ? 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)
[   19.226876][  T336] init_netconsole (drivers/net/netconsole.c:1286) netconsole
[   19.226879][  T336]  ? 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
[   19.226885][  T336]  ? 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
[   19.226888][  T336]  do_one_initcall (init/main.c:1357)
[   19.226891][  T336]  ? trace_event_raw_event_initcall_level (./include/trace/events/initcall.h:10)
[   19.226895][  T336]  ? do_init_module (./include/linux/slab.h:991 (discriminator 1) kernel/module/main.c:3105 (discriminator 1))
[   19.226898][  T336]  ? kasan_unpoison (mm/kasan/shadow.c:146 mm/kasan/shadow.c:178)
[   19.226903][  T336]  do_init_module (kernel/module/main.c:3117)
[   19.226907][  T336]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4488)
[   19.226911][  T336]  ? free_module (./include/trace/events/module.h:50 (discriminator 19))
[   19.226914][  T336]  ? kfree (./include/linux/kasan.h:235 mm/slub.c:2748 mm/slub.c:6499 mm/slub.c:6792)
[   19.226918][  T336]  load_module (kernel/module/main.c:3593)
[   19.226924][  T336]  ? layout_and_allocate.isra.0 (kernel/module/main.c:3016)
[   19.226928][  T336]  ? __ia32_sys_fsconfig (??:?)
[   19.226930][  T336]  ? add_chain_cache (kernel/locking/lockdep.c:3782)
[   19.226935][  T336]  init_module_from_file (kernel/module/main.c:3790)
[   19.226938][  T336]  ? __ia32_sys_init_module (kernel/module/main.c:3647)
[   19.226946][  T336]  ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[   19.226949][  T336]  ? 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)
[   19.226952][  T336]  idempotent_init_module (kernel/module/main.c:3802)
[   19.226955][  T336]  ? init_module_from_file (kernel/module/main.c:3791)
[   19.226961][  T336]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   19.226963][  T336]  ? cap_capable (./include/trace/events/capability.h:26 (discriminator 22) security/commoncap.c:130 (discriminator 22))
[   19.226968][  T336]  __x64_sys_finit_module (kernel/module/main.c:3828 kernel/module/main.c:3812 kernel/module/main.c:3812)
[   19.226970][  T336]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[   19.226974][  T336]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   19.226976][  T336]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   19.226979][  T336]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   19.226981][  T336] RIP: 0033:0x7fcda9c3137d
[   19.226984][  T336] 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
[   19.226986][  T336] RSP: 002b:00007ffc780682d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000139
[   19.226988][  T336] RAX: ffffffffffffffda RBX: 0000564640845700 RCX: 00007fcda9c3137d
[   19.226990][  T336] RDX: 0000000000000000 RSI: 00005646373c9ffd RDI: 0000000000000005
[   19.226991][  T336] RBP: 00007ffc78068370 R08: 0000000000000000 R09: 0000000000000000
[   19.226991][  T336] R10: 0000000000000000 R11: 0000000000000246 R12: 00005646373c9ffd
[   19.226992][  T336] R13: 0000564640845810 R14: 0000000000040000 R15: 0000000000000000
| [   20.227429][  T335] softirqs last disabled at (315917): __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767)
| [   20.227431][  T335] Preemption disabled at:
| [   20.227432][  T335] vprintk_emit (kernel/printk/printk.c:2471)
| [   20.227441][  T335] Tainted: [W]=WARN
[   20.227442][  T335] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   20.227444][  T335] Call Trace:
[   20.227446][  T335]  <TASK>
[   20.227447][  T335]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   20.227453][  T335]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   20.227455][  T335]  __might_resched.cold (kernel/sched/core.c:9234)
[   20.227460][  T335]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   20.227464][  T335]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   20.227469][  T335]  __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))
[   20.227472][  T335]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   20.227478][  T335]  ? 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)
[   20.227481][  T335]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   20.227484][  T335]  put_chars (drivers/char/virtio_console.c:1176)
[   20.227488][  T335]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   20.227490][  T335]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   20.227494][  T335]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   20.227496][  T335]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   20.227501][  T335]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   20.227505][  T335]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   20.227510][  T335]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   20.227513][  T335]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   20.227518][  T335]  console_emit_next_record (kernel/printk/printk.c:3183)
[   20.227522][  T335]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   20.227526][  T335]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   20.227529][  T335]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   20.227533][  T335]  console_flush_one_record (kernel/printk/printk.c:3268)
[   20.227537][  T335]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   20.227539][  T335]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   20.227544][  T335]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   20.227547][  T335]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   20.227549][  T335]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   20.227551][  T335]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 18) ./include/trace/events/lock.h:23 (discriminator 18) kernel/locking/lockdep.c:5871 (discriminator 18))
[   20.227554][  T335]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   20.227556][  T335]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   20.227560][  T335]  vprintk_emit (kernel/printk/printk.c:2479)
[   20.227563][  T335]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   20.227566][  T335]  ? rcu_gp_is_expedited (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:32 kernel/rcu/update.c:196)
[   20.227567][  T335]  ? synchronize_rcu (kernel/rcu/tree.c:3410)
[   20.227572][  T335]  _printk (kernel/printk/printk.c:2504)
[   20.227575][  T335]  ? snapshot_read.cold (user.c:?)
[   20.227577][  T335]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   20.227581][  T335]  ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:470 (discriminator 2) kernel/locking/lockdep.c:4427 (discriminator 2))
[   20.227583][  T335]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4488)
[   20.227587][  T335]  ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:211 (discriminator 1) kernel/locking/spinlock.c:221 (discriminator 1))
[   20.227590][  T335]  ? __free_object (./include/linux/irqflags.h:266 (discriminator 6) lib/debugobjects.c:536 (discriminator 6))
[   20.227595][  T335] enabled_store.cold (drivers/net/netconsole.c:1071 (discriminator 1)) netconsole
[   20.227598][  T335]  ? __kasan_kmalloc (mm/kasan/common.c:398 mm/kasan/common.c:415)
[   20.227602][  T335]  ? netconsole_write_ext (drivers/net/netconsole.c:2504) netconsole
[   20.227604][  T335]  ? down_write_killable_nested (./arch/x86/include/asm/atomic64_64.h:20)
[   20.227606][  T335]  ? __kmalloc_cache_noprof (mm/slub.c:5561 (discriminator 1))
[   20.227608][  T335]  ? configfs_write_iter (./include/linux/slab.h:991 (discriminator 1) fs/configfs/file.c:187 (discriminator 1) fs/configfs/file.c:227 (discriminator 1))
[   20.227612][  T335]  ? netconsole_write_ext (drivers/net/netconsole.c:2504) netconsole
[   20.227614][  T335]  configfs_write_iter (fs/configfs/file.c:207 fs/configfs/file.c:229)
[   20.227617][  T335]  ? configfs_bin_write_iter (fs/configfs/file.c:287 (discriminator 1))
[   20.227619][  T335]  new_sync_write (fs/read_write.c:595)
[   20.227623][  T335]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   20.227626][  T335]  ? new_sync_read (./include/linux/ioprio.h:41)
[   20.227629][  T335]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   20.227631][  T335]  ? ksys_write (fs/read_write.c:739)
[   20.227637][  T335]  vfs_write (fs/read_write.c:687)
[   20.227641][  T335]  ksys_write (fs/read_write.c:739)
[   20.227644][  T335]  ? __ia32_sys_read (fs/read_write.c:723)
[   20.227647][  T335]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   20.227651][  T335]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   20.227653][  T335]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   20.227656][  T335]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   20.227658][  T335] RIP: 0033:0x7f72530d6312
[   20.227662][  T335] Code: 08 0f 85 71 41 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 <c3> 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 f3 0f 1e fa 55 bf 01 00
All code
========
   0:	08 0f                	or     %cl,(%rdi)
   2:	85 71 41             	test   %esi,0x41(%rcx)
   5:	ff                   	(bad)
   6:	ff 49 89             	decl   -0x77(%rcx)
   9:	fb                   	sti
   a:	48 89 f0             	mov    %rsi,%rax
   d:	48 89 d7             	mov    %rdx,%rdi
  10:	48 89 ce             	mov    %rcx,%rsi
  13:	4c 89 c2             	mov    %r8,%rdx
  16:	4d 89 ca             	mov    %r9,%r10
  19:	4c 8b 44 24 08       	mov    0x8(%rsp),%r8
  1e:	4c 8b 4c 24 10       	mov    0x10(%rsp),%r9
  23:	4c 89 5c 24 08       	mov    %r11,0x8(%rsp)
  28:	0f 05                	syscall
  2a:*	c3                   	ret		<-- trapping instruction
  2b:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  32:	00 00 00 
  35:	0f 1f 00             	nopl   (%rax)
  38:	f3 0f 1e fa          	endbr64
  3c:	55                   	push   %rbp
  3d:	bf                   	.byte 0xbf
  3e:	01 00                	add    %eax,(%rax)

Code starting with the faulting instruction
===========================================
   0:	c3                   	ret
   1:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
   8:	00 00 00 
   b:	0f 1f 00             	nopl   (%rax)
   e:	f3 0f 1e fa          	endbr64
  12:	55                   	push   %rbp
  13:	bf                   	.byte 0xbf
  14:	01 00                	add    %eax,(%rax)
[   20.227664][  T335] RSP: 002b:00007ffeeef621b8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   20.227666][  T335] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f72530d6312
[   20.227668][  T335] RDX: 0000000000000001 RSI: 00005621383bd2b0 RDI: 000000000000000b
[   20.227669][  T335] RBP: 00007ffeeef621e0 R08: 0000000000000000 R09: 0000000000000000
[   20.227670][  T335] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f7252f43390
[   20.227671][  T335] R13: 00005621383bd2b0 R14: 000000000000000b R15: 00007f7252ed10d0
| [   21.233144][  T335] softirqs last disabled at (337511): __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767)
| [   21.233146][  T335] Preemption disabled at:
| [   21.233147][  T335] vprintk_emit (kernel/printk/printk.c:2471)
| [   21.233156][  T335] Tainted: [W]=WARN
[   21.233157][  T335] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   21.233159][  T335] Call Trace:
[   21.233161][  T335]  <TASK>
[   21.233163][  T335]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   21.233169][  T335]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   21.233171][  T335]  __might_resched.cold (kernel/sched/core.c:9234)
[   21.233176][  T335]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   21.233180][  T335]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   21.233185][  T335]  __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))
[   21.233188][  T335]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   21.233194][  T335]  ? 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)
[   21.233197][  T335]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   21.233201][  T335]  put_chars (drivers/char/virtio_console.c:1176)
[   21.233204][  T335]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   21.233206][  T335]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   21.233211][  T335]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   21.233213][  T335]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   21.233218][  T335]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   21.233221][  T335]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   21.233226][  T335]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   21.233229][  T335]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   21.233235][  T335]  console_emit_next_record (kernel/printk/printk.c:3183)
[   21.233238][  T335]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   21.233243][  T335]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   21.233245][  T335]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   21.233249][  T335]  console_flush_one_record (kernel/printk/printk.c:3268)
[   21.233254][  T335]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   21.233255][  T335]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   21.233261][  T335]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   21.233264][  T335]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   21.233265][  T335]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   21.233268][  T335]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 18) ./include/trace/events/lock.h:23 (discriminator 18) kernel/locking/lockdep.c:5871 (discriminator 18))
[   21.233272][  T335]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   21.233273][  T335]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   21.233277][  T335]  vprintk_emit (kernel/printk/printk.c:2479)
[   21.233281][  T335]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   21.233283][  T335]  ? rcu_gp_is_expedited (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:32 kernel/rcu/update.c:196)
[   21.233285][  T335]  ? synchronize_rcu (kernel/rcu/tree.c:3410)
[   21.233289][  T335]  _printk (kernel/printk/printk.c:2504)
[   21.233293][  T335]  ? snapshot_read.cold (user.c:?)
[   21.233295][  T335]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   21.233299][  T335]  ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:470 (discriminator 2) kernel/locking/lockdep.c:4427 (discriminator 2))
[   21.233300][  T335]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4488)
[   21.233305][  T335]  ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:211 (discriminator 1) kernel/locking/spinlock.c:221 (discriminator 1))
[   21.233308][  T335]  ? __free_object (./include/linux/irqflags.h:266 (discriminator 6) lib/debugobjects.c:536 (discriminator 6))
[   21.233313][  T335] enabled_store.cold (drivers/net/netconsole.c:1071 (discriminator 1)) netconsole
[   21.233316][  T335]  ? __kasan_kmalloc (mm/kasan/common.c:398 mm/kasan/common.c:415)
[   21.233320][  T335]  ? netconsole_write_ext (drivers/net/netconsole.c:2504) netconsole
[   21.233322][  T335]  ? down_write_killable_nested (./arch/x86/include/asm/atomic64_64.h:20)
[   21.233324][  T335]  ? __kmalloc_cache_noprof (mm/slub.c:5561 (discriminator 1))
[   21.233326][  T335]  ? configfs_write_iter (./include/linux/slab.h:991 (discriminator 1) fs/configfs/file.c:187 (discriminator 1) fs/configfs/file.c:227 (discriminator 1))
[   21.233330][  T335]  ? netconsole_write_ext (drivers/net/netconsole.c:2504) netconsole
[   21.233332][  T335]  configfs_write_iter (fs/configfs/file.c:207 fs/configfs/file.c:229)
[   21.233335][  T335]  ? configfs_bin_write_iter (fs/configfs/file.c:287 (discriminator 1))
[   21.233337][  T335]  new_sync_write (fs/read_write.c:595)
[   21.233341][  T335]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   21.233344][  T335]  ? new_sync_read (./include/linux/ioprio.h:41)
[   21.233348][  T335]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   21.233350][  T335]  ? ksys_write (fs/read_write.c:739)
[   21.233356][  T335]  vfs_write (fs/read_write.c:687)
[   21.233360][  T335]  ksys_write (fs/read_write.c:739)
[   21.233363][  T335]  ? __ia32_sys_read (fs/read_write.c:723)
[   21.233366][  T335]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   21.233369][  T335]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   21.233372][  T335]  ? irq_exit_rcu (kernel/softirq.c:786)
[   21.233374][  T335]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   21.233377][  T335] RIP: 0033:0x7f72530d6312
[   21.233380][  T335] Code: 08 0f 85 71 41 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 <c3> 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 f3 0f 1e fa 55 bf 01 00
All code
========
   0:	08 0f                	or     %cl,(%rdi)
   2:	85 71 41             	test   %esi,0x41(%rcx)
   5:	ff                   	(bad)
   6:	ff 49 89             	decl   -0x77(%rcx)
   9:	fb                   	sti
   a:	48 89 f0             	mov    %rsi,%rax
   d:	48 89 d7             	mov    %rdx,%rdi
  10:	48 89 ce             	mov    %rcx,%rsi
  13:	4c 89 c2             	mov    %r8,%rdx
  16:	4d 89 ca             	mov    %r9,%r10
  19:	4c 8b 44 24 08       	mov    0x8(%rsp),%r8
  1e:	4c 8b 4c 24 10       	mov    0x10(%rsp),%r9
  23:	4c 89 5c 24 08       	mov    %r11,0x8(%rsp)
  28:	0f 05                	syscall
  2a:*	c3                   	ret		<-- trapping instruction
  2b:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  32:	00 00 00 
  35:	0f 1f 00             	nopl   (%rax)
  38:	f3 0f 1e fa          	endbr64
  3c:	55                   	push   %rbp
  3d:	bf                   	.byte 0xbf
  3e:	01 00                	add    %eax,(%rax)

Code starting with the faulting instruction
===========================================
   0:	c3                   	ret
   1:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
   8:	00 00 00 
   b:	0f 1f 00             	nopl   (%rax)
   e:	f3 0f 1e fa          	endbr64
  12:	55                   	push   %rbp
  13:	bf                   	.byte 0xbf
  14:	01 00                	add    %eax,(%rax)
[   21.233382][  T335] RSP: 002b:00007ffeeef621b8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   21.233385][  T335] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f72530d6312
[   21.233387][  T335] RDX: 0000000000000001 RSI: 00005621383bd2b0 RDI: 000000000000000b
[   21.233388][  T335] RBP: 00007ffeeef621e0 R08: 0000000000000000 R09: 0000000000000000
[   21.233389][  T335] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f7252f43390
[   21.233390][  T335] R13: 00005621383bd2b0 R14: 000000000000000b R15: 00007f7252ed10d0
| [   22.607541][  T335] softirqs last disabled at (358701): __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767)
| [   22.607543][  T335] Preemption disabled at:
| [   22.607544][  T335] vprintk_emit (kernel/printk/printk.c:2471)
| [   22.607553][  T335] Tainted: [W]=WARN
[   22.607554][  T335] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   22.607556][  T335] Call Trace:
[   22.607557][  T335]  <TASK>
[   22.607559][  T335]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   22.607564][  T335]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   22.607567][  T335]  __might_resched.cold (kernel/sched/core.c:9234)
[   22.607571][  T335]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   22.607575][  T335]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   22.607583][  T335]  __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))
[   22.607586][  T335]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   22.607592][  T335]  ? 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)
[   22.607595][  T335]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   22.607599][  T335]  put_chars (drivers/char/virtio_console.c:1176)
[   22.607602][  T335]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   22.607604][  T335]  ? printk_get_next_message (kernel/printk/printk.c:3072)
[   22.607608][  T335]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   22.607611][  T335]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   22.607615][  T335]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   22.607619][  T335]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   22.607620][  T335]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   22.607624][  T335]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   22.607628][  T335]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   22.607631][  T335]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   22.607635][  T335]  console_emit_next_record (kernel/printk/printk.c:3183)
[   22.607638][  T335]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   22.607642][  T335]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   22.607645][  T335]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   22.607648][  T335]  console_flush_one_record (kernel/printk/printk.c:3268)
[   22.607652][  T335]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   22.607654][  T335]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   22.607659][  T335]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   22.607662][  T335]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   22.607664][  T335]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   22.607666][  T335]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 18) ./include/trace/events/lock.h:23 (discriminator 18) kernel/locking/lockdep.c:5871 (discriminator 18))
[   22.607670][  T335]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   22.607672][  T335]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   22.607675][  T335]  vprintk_emit (kernel/printk/printk.c:2479)
[   22.607678][  T335]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   22.607682][  T335]  ? _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)
[   22.607687][  T335]  devkmsg_emit.constprop.0 (kernel/printk/printk.c:733)
[   22.607691][  T335]  ? vprintk_emit.cold (kernel/printk/printk.c:2449)
[   22.607695][  T335]  ? __kmalloc_noprof (mm/slub.c:5415 mm/slub.c:5439)
[   22.607697][  T335]  ? idr_get_free (??:?)
[   22.607700][  T335]  ? devkmsg_write (./include/linux/slab.h:995 kernel/printk/printk.c:762)
[   22.607703][  T335]  ? _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)
[   22.607706][  T335]  devkmsg_write.cold (kernel/printk/printk.c:796)
[   22.607708][  T335]  ? vprintk_default (kernel/printk/printk.c:2494)
[   22.607713][  T335]  ? vprintk_default (kernel/printk/printk.c:2494)
[   22.607715][  T335]  new_sync_write (fs/read_write.c:595)
[   22.607721][  T335]  ? new_sync_read (./include/linux/ioprio.h:41)
[   22.607725][  T335]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   22.607729][  T335]  ? __fget_files (./include/linux/rcupdate.h:882 fs/file.c:1100)
[   22.607733][  T335]  vfs_write (fs/read_write.c:687)
[   22.607737][  T335]  ksys_write (fs/read_write.c:739)
[   22.607743][  T335]  ? __ia32_sys_read (fs/read_write.c:723)
[   22.607746][  T335]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   22.607750][  T335]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   22.607752][  T335]  ? irq_exit_rcu (kernel/softirq.c:786)
[   22.607755][  T335]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   22.607757][  T335] RIP: 0033:0x7f72530d6312
[   22.607761][  T335] Code: 08 0f 85 71 41 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 <c3> 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 f3 0f 1e fa 55 bf 01 00
All code
========
   0:	08 0f                	or     %cl,(%rdi)
   2:	85 71 41             	test   %esi,0x41(%rcx)
   5:	ff                   	(bad)
   6:	ff 49 89             	decl   -0x77(%rcx)
   9:	fb                   	sti
   a:	48 89 f0             	mov    %rsi,%rax
   d:	48 89 d7             	mov    %rdx,%rdi
  10:	48 89 ce             	mov    %rcx,%rsi
  13:	4c 89 c2             	mov    %r8,%rdx
  16:	4d 89 ca             	mov    %r9,%r10
  19:	4c 8b 44 24 08       	mov    0x8(%rsp),%r8
  1e:	4c 8b 4c 24 10       	mov    0x10(%rsp),%r9
  23:	4c 89 5c 24 08       	mov    %r11,0x8(%rsp)
  28:	0f 05                	syscall
  2a:*	c3                   	ret		<-- trapping instruction
  2b:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  32:	00 00 00 
  35:	0f 1f 00             	nopl   (%rax)
  38:	f3 0f 1e fa          	endbr64
  3c:	55                   	push   %rbp
  3d:	bf                   	.byte 0xbf
  3e:	01 00                	add    %eax,(%rax)

Code starting with the faulting instruction
===========================================
   0:	c3                   	ret
   1:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
   8:	00 00 00 
   b:	0f 1f 00             	nopl   (%rax)
   e:	f3 0f 1e fa          	endbr64
  12:	55                   	push   %rbp
  13:	bf                   	.byte 0xbf
  14:	01 00                	add    %eax,(%rax)
[   22.607763][  T335] RSP: 002b:00007ffeeef621b8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   22.607766][  T335] RAX: ffffffffffffffda RBX: 00000000000002ee RCX: 00007f72530d6312
[   22.607768][  T335] RDX: 00000000000002ee RSI: 00005621383bd2b0 RDI: 000000000000000b
[   22.607769][  T335] RBP: 00007ffeeef621e0 R08: 0000000000000000 R09: 0000000000000000
[   22.607770][  T335] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f7252f43390
[   22.607770][  T335] R13: 00005621383bd2b0 R14: 000000000000000b R15: 00007f7252ed10d0
| [   23.644107][  T335] softirqs last disabled at (384386): __alloc_skb (./include/linux/bottom_half.h:20 (discriminator 2) net/core/skbuff.c:697 (discriminator 2))
| [   23.644109][  T335] Preemption disabled at:
| [   23.644110][  T335] vprintk_emit (kernel/printk/printk.c:2471)
| [   23.644121][  T335] Tainted: [W]=WARN
[   23.644122][  T335] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   23.644124][  T335] Call Trace:
[   23.644126][  T335]  <TASK>
[   23.644128][  T335]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   23.644135][  T335]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   23.644137][  T335]  __might_resched.cold (kernel/sched/core.c:9234)
[   23.644143][  T335]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   23.644147][  T335]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   23.644153][  T335]  __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))
[   23.644156][  T335]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   23.644164][  T335]  ? 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)
[   23.644167][  T335]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   23.644172][  T335]  put_chars (drivers/char/virtio_console.c:1176)
[   23.644176][  T335]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   23.644179][  T335]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   23.644184][  T335]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   23.644187][  T335]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   23.644193][  T335]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   23.644196][  T335]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   23.644203][  T335]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   23.644207][  T335]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   23.644214][  T335]  console_emit_next_record (kernel/printk/printk.c:3183)
[   23.644218][  T335]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   23.644224][  T335]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   23.644227][  T335]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   23.644233][  T335]  console_flush_one_record (kernel/printk/printk.c:3268)
[   23.644238][  T335]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   23.644240][  T335]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   23.644248][  T335]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   23.644251][  T335]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   23.644253][  T335]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   23.644256][  T335]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 18) ./include/trace/events/lock.h:23 (discriminator 18) kernel/locking/lockdep.c:5871 (discriminator 18))
[   23.644261][  T335]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   23.644263][  T335]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   23.644267][  T335]  vprintk_emit (kernel/printk/printk.c:2479)
[   23.644272][  T335]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   23.644276][  T335]  ? rcu_gp_is_expedited (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:32 kernel/rcu/update.c:196)
[   23.644278][  T335]  ? synchronize_rcu (kernel/rcu/tree.c:3410)
[   23.644283][  T335]  _printk (kernel/printk/printk.c:2504)
[   23.644287][  T335]  ? snapshot_read.cold (user.c:?)
[   23.644289][  T335]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   23.644295][  T335]  ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:470 (discriminator 2) kernel/locking/lockdep.c:4427 (discriminator 2))
[   23.644297][  T335]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4488)
[   23.644302][  T335]  ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:211 (discriminator 1) kernel/locking/spinlock.c:221 (discriminator 1))
[   23.644306][  T335]  ? __free_object (./include/linux/irqflags.h:266 (discriminator 6) lib/debugobjects.c:536 (discriminator 6))
[   23.644311][  T335] enabled_store.cold (drivers/net/netconsole.c:1071 (discriminator 1)) netconsole
[   23.644314][  T335]  ? __kasan_kmalloc (mm/kasan/common.c:398 mm/kasan/common.c:415)
[   23.644319][  T335]  ? netconsole_write_ext (drivers/net/netconsole.c:2504) netconsole
[   23.644321][  T335]  ? down_write_killable_nested (./arch/x86/include/asm/atomic64_64.h:20)
[   23.644324][  T335]  ? __kmalloc_cache_noprof (mm/slub.c:5561 (discriminator 1))
[   23.644327][  T335]  ? configfs_write_iter (./include/linux/slab.h:991 (discriminator 1) fs/configfs/file.c:187 (discriminator 1) fs/configfs/file.c:227 (discriminator 1))
[   23.644332][  T335]  ? netconsole_write_ext (drivers/net/netconsole.c:2504) netconsole
[   23.644334][  T335]  configfs_write_iter (fs/configfs/file.c:207 fs/configfs/file.c:229)
[   23.644338][  T335]  ? configfs_bin_write_iter (fs/configfs/file.c:287 (discriminator 1))
[   23.644342][  T335]  new_sync_write (fs/read_write.c:595)
[   23.644346][  T335]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   23.644350][  T335]  ? new_sync_read (./include/linux/ioprio.h:41)
[   23.644354][  T335]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   23.644357][  T335]  ? ksys_write (fs/read_write.c:739)
[   23.644365][  T335]  vfs_write (fs/read_write.c:687)
[   23.644370][  T335]  ksys_write (fs/read_write.c:739)
[   23.644374][  T335]  ? __ia32_sys_read (fs/read_write.c:723)
[   23.644377][  T335]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   23.644382][  T335]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   23.644384][  T335]  ? irq_exit_rcu (kernel/softirq.c:786)
[   23.644389][  T335]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   23.644392][  T335] RIP: 0033:0x7f72530d6312
[   23.644396][  T335] Code: 08 0f 85 71 41 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 <c3> 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 f3 0f 1e fa 55 bf 01 00
All code
========
   0:	08 0f                	or     %cl,(%rdi)
   2:	85 71 41             	test   %esi,0x41(%rcx)
   5:	ff                   	(bad)
   6:	ff 49 89             	decl   -0x77(%rcx)
   9:	fb                   	sti
   a:	48 89 f0             	mov    %rsi,%rax
   d:	48 89 d7             	mov    %rdx,%rdi
  10:	48 89 ce             	mov    %rcx,%rsi
  13:	4c 89 c2             	mov    %r8,%rdx
  16:	4d 89 ca             	mov    %r9,%r10
  19:	4c 8b 44 24 08       	mov    0x8(%rsp),%r8
  1e:	4c 8b 4c 24 10       	mov    0x10(%rsp),%r9
  23:	4c 89 5c 24 08       	mov    %r11,0x8(%rsp)
  28:	0f 05                	syscall
  2a:*	c3                   	ret		<-- trapping instruction
  2b:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  32:	00 00 00 
  35:	0f 1f 00             	nopl   (%rax)
  38:	f3 0f 1e fa          	endbr64
  3c:	55                   	push   %rbp
  3d:	bf                   	.byte 0xbf
  3e:	01 00                	add    %eax,(%rax)

Code starting with the faulting instruction
===========================================
   0:	c3                   	ret
   1:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
   8:	00 00 00 
   b:	0f 1f 00             	nopl   (%rax)
   e:	f3 0f 1e fa          	endbr64
  12:	55                   	push   %rbp
  13:	bf                   	.byte 0xbf
  14:	01 00                	add    %eax,(%rax)
[   23.644399][  T335] RSP: 002b:00007ffeeef621b8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   23.644402][  T335] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f72530d6312
[   23.644404][  T335] RDX: 0000000000000001 RSI: 00005621383bd2b0 RDI: 000000000000000b
[   23.644405][  T335] RBP: 00007ffeeef621e0 R08: 0000000000000000 R09: 0000000000000000
[   23.644406][  T335] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f7252f43390
[   23.644407][  T335] R13: 00005621383bd2b0 R14: 000000000000000b R15: 00007f7252ed10d0
| [   24.649321][  T335] softirqs last disabled at (400092): __alloc_skb (./include/linux/bottom_half.h:20 (discriminator 2) net/core/skbuff.c:697 (discriminator 2))
| [   24.649323][  T335] Preemption disabled at:
| [   24.649324][  T335] vprintk_emit (kernel/printk/printk.c:2471)
| [   24.649334][  T335] Tainted: [W]=WARN
[   24.649335][  T335] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   24.649336][  T335] Call Trace:
[   24.649339][  T335]  <TASK>
[   24.649341][  T335]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   24.649347][  T335]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   24.649349][  T335]  __might_resched.cold (kernel/sched/core.c:9234)
[   24.649354][  T335]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   24.649358][  T335]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   24.649363][  T335]  __kmalloc_noprof (./include/linux/sched/mm.h:322 (discriminator 2) mm/slub.c:4636 (discriminator 2) mm/slub.c:4974 (discriminator 2) mm/slub.c:5413 (discriminator 2) mm/slub.c:5439 (discriminator 2))
[   24.649365][  T335]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   24.649372][  T335]  ? do_raw_spin_unlock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:32 ./include/asm-generic/qspinlock.h:58 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141)
[   24.649375][  T335]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   24.649378][  T335]  put_chars (drivers/char/virtio_console.c:1176)
[   24.649381][  T335]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   24.649383][  T335]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   24.649388][  T335]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   24.649390][  T335]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   24.649395][  T335]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   24.649398][  T335]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   24.649404][  T335]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   24.649407][  T335]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   24.649412][  T335]  console_emit_next_record (kernel/printk/printk.c:3183)
[   24.649416][  T335]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   24.649420][  T335]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   24.649423][  T335]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   24.649427][  T335]  console_flush_one_record (kernel/printk/printk.c:3268)
[   24.649431][  T335]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   24.649432][  T335]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   24.649438][  T335]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   24.649441][  T335]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   24.649443][  T335]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   24.649445][  T335]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 18) ./include/trace/events/lock.h:23 (discriminator 18) kernel/locking/lockdep.c:5871 (discriminator 18))
[   24.649449][  T335]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   24.649450][  T335]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   24.649454][  T335]  vprintk_emit (kernel/printk/printk.c:2479)
[   24.649458][  T335]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   24.649460][  T335]  ? rcu_gp_is_expedited (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:32 kernel/rcu/update.c:196)
[   24.649462][  T335]  ? synchronize_rcu (kernel/rcu/tree.c:3410)
[   24.649466][  T335]  _printk (kernel/printk/printk.c:2504)
[   24.649469][  T335]  ? snapshot_read.cold (user.c:?)
[   24.649471][  T335]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   24.649475][  T335]  ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:470 (discriminator 2) kernel/locking/lockdep.c:4427 (discriminator 2))
[   24.649477][  T335]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4488)
[   24.649481][  T335]  ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:211 (discriminator 1) kernel/locking/spinlock.c:221 (discriminator 1))
[   24.649484][  T335]  ? __free_object (./include/linux/irqflags.h:266 (discriminator 6) lib/debugobjects.c:536 (discriminator 6))
[   24.649489][  T335] enabled_store.cold (drivers/net/netconsole.c:1071 (discriminator 1)) netconsole
[   24.649492][  T335]  ? __kasan_kmalloc (mm/kasan/common.c:398 mm/kasan/common.c:415)
[   24.649496][  T335]  ? netconsole_write_ext (drivers/net/netconsole.c:2504) netconsole
[   24.649498][  T335]  ? down_write_killable_nested (./arch/x86/include/asm/atomic64_64.h:20)
[   24.649500][  T335]  ? __kmalloc_cache_noprof (mm/slub.c:5561 (discriminator 1))
[   24.649503][  T335]  ? configfs_write_iter (./include/linux/slab.h:991 (discriminator 1) fs/configfs/file.c:187 (discriminator 1) fs/configfs/file.c:227 (discriminator 1))
[   24.649507][  T335]  ? netconsole_write_ext (drivers/net/netconsole.c:2504) netconsole
[   24.649509][  T335]  configfs_write_iter (fs/configfs/file.c:207 fs/configfs/file.c:229)
[   24.649511][  T335]  ? configfs_bin_write_iter (fs/configfs/file.c:287 (discriminator 1))
[   24.649514][  T335]  new_sync_write (fs/read_write.c:595)
[   24.649517][  T335]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   24.649520][  T335]  ? new_sync_read (./include/linux/ioprio.h:41)
[   24.649524][  T335]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   24.649525][  T335]  ? ksys_write (fs/read_write.c:739)
[   24.649532][  T335]  vfs_write (fs/read_write.c:687)
[   24.649536][  T335]  ksys_write (fs/read_write.c:739)
[   24.649538][  T335]  ? __ia32_sys_read (fs/read_write.c:723)
[   24.649541][  T335]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   24.649545][  T335]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   24.649547][  T335]  ? irq_exit_rcu (kernel/softirq.c:786)
[   24.649551][  T335]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   24.649553][  T335] RIP: 0033:0x7f72530d6312
[   24.649557][  T335] Code: 08 0f 85 71 41 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 <c3> 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 f3 0f 1e fa 55 bf 01 00
All code
========
   0:	08 0f                	or     %cl,(%rdi)
   2:	85 71 41             	test   %esi,0x41(%rcx)
   5:	ff                   	(bad)
   6:	ff 49 89             	decl   -0x77(%rcx)
   9:	fb                   	sti
   a:	48 89 f0             	mov    %rsi,%rax
   d:	48 89 d7             	mov    %rdx,%rdi
  10:	48 89 ce             	mov    %rcx,%rsi
  13:	4c 89 c2             	mov    %r8,%rdx
  16:	4d 89 ca             	mov    %r9,%r10
  19:	4c 8b 44 24 08       	mov    0x8(%rsp),%r8
  1e:	4c 8b 4c 24 10       	mov    0x10(%rsp),%r9
  23:	4c 89 5c 24 08       	mov    %r11,0x8(%rsp)
  28:	0f 05                	syscall
  2a:*	c3                   	ret		<-- trapping instruction
  2b:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  32:	00 00 00 
  35:	0f 1f 00             	nopl   (%rax)
  38:	f3 0f 1e fa          	endbr64
  3c:	55                   	push   %rbp
  3d:	bf                   	.byte 0xbf
  3e:	01 00                	add    %eax,(%rax)

Code starting with the faulting instruction
===========================================
   0:	c3                   	ret
   1:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
   8:	00 00 00 
   b:	0f 1f 00             	nopl   (%rax)
   e:	f3 0f 1e fa          	endbr64
  12:	55                   	push   %rbp
  13:	bf                   	.byte 0xbf
  14:	01 00                	add    %eax,(%rax)
[   24.649559][  T335] RSP: 002b:00007ffeeef621b8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   24.649562][  T335] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f72530d6312
[   24.649563][  T335] RDX: 0000000000000001 RSI: 00005621383bd2b0 RDI: 000000000000000b
[   24.649564][  T335] RBP: 00007ffeeef621e0 R08: 0000000000000000 R09: 0000000000000000
[   24.649565][  T335] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f7252f43390
[   24.649566][  T335] R13: 00005621383bd2b0 R14: 000000000000000b R15: 00007f7252ed10d0
| [   26.044665][  T335] softirqs last disabled at (433573): __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767)
| [   26.044668][  T335] Preemption disabled at:
| [   26.044668][  T335] vprintk_emit (kernel/printk/printk.c:2471)
| [   26.044677][  T335] Tainted: [W]=WARN
[   26.044678][  T335] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   26.044680][  T335] Call Trace:
[   26.044682][  T335]  <TASK>
[   26.044683][  T335]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   26.044688][  T335]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   26.044691][  T335]  __might_resched.cold (kernel/sched/core.c:9234)
[   26.044695][  T335]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   26.044699][  T335]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   26.044704][  T335]  __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))
[   26.044707][  T335]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   26.044713][  T335]  ? 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)
[   26.044716][  T335]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   26.044720][  T335]  put_chars (drivers/char/virtio_console.c:1176)
[   26.044723][  T335]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   26.044725][  T335]  ? printk_get_next_message (kernel/printk/printk.c:3072)
[   26.044728][  T335]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   26.044731][  T335]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   26.044735][  T335]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   26.044739][  T335]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   26.044741][  T335]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   26.044745][  T335]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   26.044749][  T335]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   26.044752][  T335]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   26.044761][  T335]  console_emit_next_record (kernel/printk/printk.c:3183)
[   26.044764][  T335]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   26.044769][  T335]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   26.044771][  T335]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   26.044775][  T335]  console_flush_one_record (kernel/printk/printk.c:3268)
[   26.044779][  T335]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   26.044781][  T335]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   26.044786][  T335]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   26.044788][  T335]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   26.044790][  T335]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   26.044792][  T335]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 18) ./include/trace/events/lock.h:23 (discriminator 18) kernel/locking/lockdep.c:5871 (discriminator 18))
[   26.044796][  T335]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   26.044798][  T335]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   26.044801][  T335]  vprintk_emit (kernel/printk/printk.c:2479)
[   26.044806][  T335]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   26.044809][  T335]  ? _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)
[   26.044815][  T335]  devkmsg_emit.constprop.0 (kernel/printk/printk.c:733)
[   26.044819][  T335]  ? vprintk_emit.cold (kernel/printk/printk.c:2449)
[   26.044823][  T335]  ? __kmalloc_noprof (mm/slub.c:5415 mm/slub.c:5439)
[   26.044825][  T335]  ? idr_get_free (??:?)
[   26.044828][  T335]  ? devkmsg_write (./include/linux/slab.h:995 kernel/printk/printk.c:762)
[   26.044831][  T335]  ? _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)
[   26.044833][  T335]  devkmsg_write.cold (kernel/printk/printk.c:796)
[   26.044836][  T335]  ? vprintk_default (kernel/printk/printk.c:2494)
[   26.044840][  T335]  ? vprintk_default (kernel/printk/printk.c:2494)
[   26.044843][  T335]  new_sync_write (fs/read_write.c:595)
[   26.044849][  T335]  ? new_sync_read (./include/linux/ioprio.h:41)
[   26.044853][  T335]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   26.044857][  T335]  ? __fget_files (./include/linux/rcupdate.h:882 fs/file.c:1100)
[   26.044861][  T335]  vfs_write (fs/read_write.c:687)
[   26.044865][  T335]  ksys_write (fs/read_write.c:739)
[   26.044867][  T335]  ? __ia32_sys_read (fs/read_write.c:723)
[   26.044870][  T335]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   26.044873][  T335]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   26.044876][  T335]  ? irq_exit_rcu (kernel/softirq.c:786)
[   26.044879][  T335]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   26.044881][  T335] RIP: 0033:0x7f72530d6312
[   26.044885][  T335] Code: 08 0f 85 71 41 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 <c3> 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 f3 0f 1e fa 55 bf 01 00
All code
========
   0:	08 0f                	or     %cl,(%rdi)
   2:	85 71 41             	test   %esi,0x41(%rcx)
   5:	ff                   	(bad)
   6:	ff 49 89             	decl   -0x77(%rcx)
   9:	fb                   	sti
   a:	48 89 f0             	mov    %rsi,%rax
   d:	48 89 d7             	mov    %rdx,%rdi
  10:	48 89 ce             	mov    %rcx,%rsi
  13:	4c 89 c2             	mov    %r8,%rdx
  16:	4d 89 ca             	mov    %r9,%r10
  19:	4c 8b 44 24 08       	mov    0x8(%rsp),%r8
  1e:	4c 8b 4c 24 10       	mov    0x10(%rsp),%r9
  23:	4c 89 5c 24 08       	mov    %r11,0x8(%rsp)
  28:	0f 05                	syscall
  2a:*	c3                   	ret		<-- trapping instruction
  2b:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  32:	00 00 00 
  35:	0f 1f 00             	nopl   (%rax)
  38:	f3 0f 1e fa          	endbr64
  3c:	55                   	push   %rbp
  3d:	bf                   	.byte 0xbf
  3e:	01 00                	add    %eax,(%rax)

Code starting with the faulting instruction
===========================================
   0:	c3                   	ret
   1:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
   8:	00 00 00 
   b:	0f 1f 00             	nopl   (%rax)
   e:	f3 0f 1e fa          	endbr64
  12:	55                   	push   %rbp
  13:	bf                   	.byte 0xbf
  14:	01 00                	add    %eax,(%rax)
[   26.044887][  T335] RSP: 002b:00007ffeeef621b8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   26.044890][  T335] RAX: ffffffffffffffda RBX: 0000000000000316 RCX: 00007f72530d6312
[   26.044892][  T335] RDX: 0000000000000316 RSI: 00005621383bd2b0 RDI: 000000000000000b
[   26.044893][  T335] RBP: 00007ffeeef621e0 R08: 0000000000000000 R09: 0000000000000000
[   26.044894][  T335] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f7252f43390
[   26.044895][  T335] R13: 00005621383bd2b0 R14: 000000000000000b R15: 00007f7252ed10d0
| [   27.049995][  T335] softirqs last disabled at (461948): __alloc_skb (./include/linux/bottom_half.h:20 (discriminator 2) net/core/skbuff.c:697 (discriminator 2))
| [   27.049999][  T335] Preemption disabled at:
| [   27.050000][  T335] vprintk_emit (kernel/printk/printk.c:2471)
| [   27.050009][  T335] Tainted: [W]=WARN
[   27.050010][  T335] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   27.050011][  T335] Call Trace:
[   27.050014][  T335]  <TASK>
[   27.050016][  T335]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   27.050022][  T335]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   27.050024][  T335]  __might_resched.cold (kernel/sched/core.c:9234)
[   27.050029][  T335]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   27.050033][  T335]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   27.050038][  T335]  __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))
[   27.050040][  T335]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   27.050046][  T335]  ? 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)
[   27.050049][  T335]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   27.050053][  T335]  put_chars (drivers/char/virtio_console.c:1176)
[   27.050056][  T335]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   27.050058][  T335]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   27.050062][  T335]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   27.050065][  T335]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   27.050070][  T335]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   27.050073][  T335]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   27.050078][  T335]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   27.050081][  T335]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   27.050086][  T335]  console_emit_next_record (kernel/printk/printk.c:3183)
[   27.050090][  T335]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   27.050095][  T335]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   27.050097][  T335]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   27.050101][  T335]  console_flush_one_record (kernel/printk/printk.c:3268)
[   27.050105][  T335]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   27.050107][  T335]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   27.050112][  T335]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   27.050115][  T335]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   27.050117][  T335]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   27.050119][  T335]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 18) ./include/trace/events/lock.h:23 (discriminator 18) kernel/locking/lockdep.c:5871 (discriminator 18))
[   27.050123][  T335]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   27.050125][  T335]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   27.050128][  T335]  vprintk_emit (kernel/printk/printk.c:2479)
[   27.050132][  T335]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   27.050135][  T335]  ? rcu_gp_is_expedited (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:32 kernel/rcu/update.c:196)
[   27.050136][  T335]  ? synchronize_rcu (kernel/rcu/tree.c:3410)
[   27.050140][  T335]  _printk (kernel/printk/printk.c:2504)
[   27.050144][  T335]  ? snapshot_read.cold (user.c:?)
[   27.050145][  T335]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   27.050149][  T335]  ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:470 (discriminator 2) kernel/locking/lockdep.c:4427 (discriminator 2))
[   27.050151][  T335]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4488)
[   27.050155][  T335]  ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:211 (discriminator 1) kernel/locking/spinlock.c:221 (discriminator 1))
[   27.050158][  T335]  ? __free_object (./include/linux/irqflags.h:266 (discriminator 6) lib/debugobjects.c:536 (discriminator 6))
[   27.050163][  T335] enabled_store.cold (drivers/net/netconsole.c:1071 (discriminator 1)) netconsole
[   27.050166][  T335]  ? __kasan_kmalloc (mm/kasan/common.c:398 mm/kasan/common.c:415)
[   27.050170][  T335]  ? netconsole_write_ext (drivers/net/netconsole.c:2504) netconsole
[   27.050172][  T335]  ? down_write_killable_nested (./arch/x86/include/asm/atomic64_64.h:20)
[   27.050174][  T335]  ? __kmalloc_cache_noprof (mm/slub.c:5561 (discriminator 1))
[   27.050177][  T335]  ? configfs_write_iter (./include/linux/slab.h:991 (discriminator 1) fs/configfs/file.c:187 (discriminator 1) fs/configfs/file.c:227 (discriminator 1))
[   27.050181][  T335]  ? netconsole_write_ext (drivers/net/netconsole.c:2504) netconsole
[   27.050182][  T335]  configfs_write_iter (fs/configfs/file.c:207 fs/configfs/file.c:229)
[   27.050185][  T335]  ? configfs_bin_write_iter (fs/configfs/file.c:287 (discriminator 1))
[   27.050187][  T335]  new_sync_write (fs/read_write.c:595)
[   27.050191][  T335]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   27.050194][  T335]  ? new_sync_read (./include/linux/ioprio.h:41)
[   27.050197][  T335]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   27.050199][  T335]  ? ksys_write (fs/read_write.c:739)
[   27.050205][  T335]  vfs_write (fs/read_write.c:687)
[   27.050209][  T335]  ksys_write (fs/read_write.c:739)
[   27.050212][  T335]  ? __ia32_sys_read (fs/read_write.c:723)
[   27.050215][  T335]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   27.050218][  T335]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   27.050221][  T335]  ? irq_exit_rcu (kernel/softirq.c:786)
[   27.050225][  T335]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   27.050227][  T335] RIP: 0033:0x7f72530d6312
[   27.050231][  T335] Code: 08 0f 85 71 41 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 <c3> 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 f3 0f 1e fa 55 bf 01 00
All code
========
   0:	08 0f                	or     %cl,(%rdi)
   2:	85 71 41             	test   %esi,0x41(%rcx)
   5:	ff                   	(bad)
   6:	ff 49 89             	decl   -0x77(%rcx)
   9:	fb                   	sti
   a:	48 89 f0             	mov    %rsi,%rax
   d:	48 89 d7             	mov    %rdx,%rdi
  10:	48 89 ce             	mov    %rcx,%rsi
  13:	4c 89 c2             	mov    %r8,%rdx
  16:	4d 89 ca             	mov    %r9,%r10
  19:	4c 8b 44 24 08       	mov    0x8(%rsp),%r8
  1e:	4c 8b 4c 24 10       	mov    0x10(%rsp),%r9
  23:	4c 89 5c 24 08       	mov    %r11,0x8(%rsp)
  28:	0f 05                	syscall
  2a:*	c3                   	ret		<-- trapping instruction
  2b:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  32:	00 00 00 
  35:	0f 1f 00             	nopl   (%rax)
  38:	f3 0f 1e fa          	endbr64
  3c:	55                   	push   %rbp
  3d:	bf                   	.byte 0xbf
  3e:	01 00                	add    %eax,(%rax)

Code starting with the faulting instruction
===========================================
   0:	c3                   	ret
   1:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
   8:	00 00 00 
   b:	0f 1f 00             	nopl   (%rax)
   e:	f3 0f 1e fa          	endbr64
  12:	55                   	push   %rbp
  13:	bf                   	.byte 0xbf
  14:	01 00                	add    %eax,(%rax)
[   27.050233][  T335] RSP: 002b:00007ffeeef621b8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   27.050235][  T335] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f72530d6312
[   27.050237][  T335] RDX: 0000000000000001 RSI: 00005621383bd2b0 RDI: 000000000000000b
[   27.050238][  T335] RBP: 00007ffeeef621e0 R08: 0000000000000000 R09: 0000000000000000
[   27.050239][  T335] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f7252f43390
[   27.050240][  T335] R13: 00005621383bd2b0 R14: 000000000000000b R15: 00007f7252ed10d0
| [   28.391391][  T335] softirqs last disabled at (483523): __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767)
| [   28.391393][  T335] Preemption disabled at:
| [   28.391394][  T335] vprintk_emit (kernel/printk/printk.c:2471)
| [   28.391403][  T335] Tainted: [W]=WARN
[   28.391404][  T335] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   28.391407][  T335] Call Trace:
[   28.391409][  T335]  <TASK>
[   28.391411][  T335]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   28.391417][  T335]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   28.391419][  T335]  __might_resched.cold (kernel/sched/core.c:9234)
[   28.391424][  T335]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   28.391428][  T335]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   28.391433][  T335]  __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))
[   28.391435][  T335]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   28.391441][  T335]  ? 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)
[   28.391444][  T335]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   28.391448][  T335]  put_chars (drivers/char/virtio_console.c:1176)
[   28.391451][  T335]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   28.391453][  T335]  ? printk_get_next_message (kernel/printk/printk.c:3072)
[   28.391456][  T335]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   28.391459][  T335]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   28.391463][  T335]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   28.391466][  T335]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   28.391468][  T335]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   28.391472][  T335]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   28.391476][  T335]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   28.391478][  T335]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   28.391482][  T335]  console_emit_next_record (kernel/printk/printk.c:3183)
[   28.391486][  T335]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   28.391490][  T335]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   28.391492][  T335]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   28.391496][  T335]  console_flush_one_record (kernel/printk/printk.c:3268)
[   28.391500][  T335]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   28.391501][  T335]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   28.391506][  T335]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   28.391509][  T335]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   28.391511][  T335]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   28.391513][  T335]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 18) ./include/trace/events/lock.h:23 (discriminator 18) kernel/locking/lockdep.c:5871 (discriminator 18))
[   28.391516][  T335]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   28.391518][  T335]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   28.391521][  T335]  vprintk_emit (kernel/printk/printk.c:2479)
[   28.391524][  T335]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   28.391527][  T335]  ? _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)
[   28.391533][  T335]  devkmsg_emit.constprop.0 (kernel/printk/printk.c:733)
[   28.391537][  T335]  ? vprintk_emit.cold (kernel/printk/printk.c:2449)
[   28.391540][  T335]  ? __kmalloc_noprof (mm/slub.c:5415 mm/slub.c:5439)
[   28.391542][  T335]  ? idr_get_free (??:?)
[   28.391546][  T335]  ? devkmsg_write (./include/linux/slab.h:995 kernel/printk/printk.c:762)
[   28.391549][  T335]  ? _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)
[   28.391551][  T335]  devkmsg_write.cold (kernel/printk/printk.c:796)
[   28.391554][  T335]  ? vprintk_default (kernel/printk/printk.c:2494)
[   28.391558][  T335]  ? vprintk_default (kernel/printk/printk.c:2494)
[   28.391561][  T335]  new_sync_write (fs/read_write.c:595)
[   28.391566][  T335]  ? new_sync_read (./include/linux/ioprio.h:41)
[   28.391570][  T335]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   28.391575][  T335]  ? __fget_files (./include/linux/rcupdate.h:882 fs/file.c:1100)
[   28.391578][  T335]  vfs_write (fs/read_write.c:687)
[   28.391582][  T335]  ksys_write (fs/read_write.c:739)
[   28.391585][  T335]  ? __ia32_sys_read (fs/read_write.c:723)
[   28.391587][  T335]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   28.391591][  T335]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   28.391593][  T335]  ? irq_exit_rcu (kernel/softirq.c:786)
[   28.391596][  T335]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   28.391598][  T335] RIP: 0033:0x7f72530d6312
[   28.391602][  T335] Code: 08 0f 85 71 41 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 <c3> 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 f3 0f 1e fa 55 bf 01 00
All code
========
   0:	08 0f                	or     %cl,(%rdi)
   2:	85 71 41             	test   %esi,0x41(%rcx)
   5:	ff                   	(bad)
   6:	ff 49 89             	decl   -0x77(%rcx)
   9:	fb                   	sti
   a:	48 89 f0             	mov    %rsi,%rax
   d:	48 89 d7             	mov    %rdx,%rdi
  10:	48 89 ce             	mov    %rcx,%rsi
  13:	4c 89 c2             	mov    %r8,%rdx
  16:	4d 89 ca             	mov    %r9,%r10
  19:	4c 8b 44 24 08       	mov    0x8(%rsp),%r8
  1e:	4c 8b 4c 24 10       	mov    0x10(%rsp),%r9
  23:	4c 89 5c 24 08       	mov    %r11,0x8(%rsp)
  28:	0f 05                	syscall
  2a:*	c3                   	ret		<-- trapping instruction
  2b:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  32:	00 00 00 
  35:	0f 1f 00             	nopl   (%rax)
  38:	f3 0f 1e fa          	endbr64
  3c:	55                   	push   %rbp
  3d:	bf                   	.byte 0xbf
  3e:	01 00                	add    %eax,(%rax)

Code starting with the faulting instruction
===========================================
   0:	c3                   	ret
   1:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
   8:	00 00 00 
   b:	0f 1f 00             	nopl   (%rax)
   e:	f3 0f 1e fa          	endbr64
  12:	55                   	push   %rbp
  13:	bf                   	.byte 0xbf
  14:	01 00                	add    %eax,(%rax)
[   28.391604][  T335] RSP: 002b:00007ffeeef621b8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   28.391608][  T335] RAX: ffffffffffffffda RBX: 0000000000000316 RCX: 00007f72530d6312
[   28.391609][  T335] RDX: 0000000000000316 RSI: 00005621383bd2b0 RDI: 000000000000000b
[   28.391611][  T335] RBP: 00007ffeeef621e0 R08: 0000000000000000 R09: 0000000000000000
[   28.391612][  T335] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f7252f43390
[   28.391613][  T335] R13: 00005621383bd2b0 R14: 000000000000000b R15: 00007f7252ed10d0
| [   29.390880][  T335] softirqs last disabled at (503861): __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767)
| [   29.390882][  T335] Preemption disabled at:
| [   29.390883][  T335] vprintk_emit (kernel/printk/printk.c:2471)
| [   29.390892][  T335] Tainted: [W]=WARN
[   29.390894][  T335] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   29.390896][  T335] Call Trace:
[   29.390897][  T335]  <TASK>
[   29.390899][  T335]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   29.390904][  T335]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   29.390906][  T335]  __might_resched.cold (kernel/sched/core.c:9234)
[   29.390911][  T335]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   29.390915][  T335]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   29.390920][  T335]  __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))
[   29.390922][  T335]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   29.390929][  T335]  ? 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)
[   29.390931][  T335]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   29.390935][  T335]  put_chars (drivers/char/virtio_console.c:1176)
[   29.390938][  T335]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   29.390940][  T335]  ? printk_get_next_message (kernel/printk/printk.c:3072)
[   29.390943][  T335]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   29.390946][  T335]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   29.390950][  T335]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   29.390953][  T335]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   29.390955][  T335]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   29.390959][  T335]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   29.390963][  T335]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   29.390966][  T335]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   29.390969][  T335]  console_emit_next_record (kernel/printk/printk.c:3183)
[   29.390973][  T335]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   29.390977][  T335]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   29.390979][  T335]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   29.390983][  T335]  console_flush_one_record (kernel/printk/printk.c:3268)
[   29.390987][  T335]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   29.390989][  T335]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   29.390994][  T335]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   29.390996][  T335]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   29.390998][  T335]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   29.391000][  T335]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 18) ./include/trace/events/lock.h:23 (discriminator 18) kernel/locking/lockdep.c:5871 (discriminator 18))
[   29.391004][  T335]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   29.391005][  T335]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   29.391009][  T335]  vprintk_emit (kernel/printk/printk.c:2479)
[   29.391012][  T335]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   29.391015][  T335]  ? _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)
[   29.391021][  T335]  devkmsg_emit.constprop.0 (kernel/printk/printk.c:733)
[   29.391024][  T335]  ? vprintk_emit.cold (kernel/printk/printk.c:2449)
[   29.391028][  T335]  ? __kmalloc_noprof (mm/slub.c:5415 mm/slub.c:5439)
[   29.391030][  T335]  ? idr_get_free (??:?)
[   29.391033][  T335]  ? devkmsg_write (./include/linux/slab.h:995 kernel/printk/printk.c:762)
[   29.391037][  T335]  ? _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)
[   29.391039][  T335]  devkmsg_write.cold (kernel/printk/printk.c:796)
[   29.391042][  T335]  ? vprintk_default (kernel/printk/printk.c:2494)
[   29.391046][  T335]  ? vprintk_default (kernel/printk/printk.c:2494)
[   29.391049][  T335]  new_sync_write (fs/read_write.c:595)
[   29.391054][  T335]  ? new_sync_read (./include/linux/ioprio.h:41)
[   29.391059][  T335]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   29.391063][  T335]  ? __fget_files (./include/linux/rcupdate.h:882 fs/file.c:1100)
[   29.391067][  T335]  vfs_write (fs/read_write.c:687)
[   29.391071][  T335]  ksys_write (fs/read_write.c:739)
[   29.391073][  T335]  ? __ia32_sys_read (fs/read_write.c:723)
[   29.391076][  T335]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   29.391079][  T335]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   29.391082][  T335]  ? irq_exit_rcu (kernel/softirq.c:786)
[   29.391085][  T335]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   29.391087][  T335] RIP: 0033:0x7f72530d6312
[   29.391091][  T335] Code: 08 0f 85 71 41 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 <c3> 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 f3 0f 1e fa 55 bf 01 00
All code
========
   0:	08 0f                	or     %cl,(%rdi)
   2:	85 71 41             	test   %esi,0x41(%rcx)
   5:	ff                   	(bad)
   6:	ff 49 89             	decl   -0x77(%rcx)
   9:	fb                   	sti
   a:	48 89 f0             	mov    %rsi,%rax
   d:	48 89 d7             	mov    %rdx,%rdi
  10:	48 89 ce             	mov    %rcx,%rsi
  13:	4c 89 c2             	mov    %r8,%rdx
  16:	4d 89 ca             	mov    %r9,%r10
  19:	4c 8b 44 24 08       	mov    0x8(%rsp),%r8
  1e:	4c 8b 4c 24 10       	mov    0x10(%rsp),%r9
  23:	4c 89 5c 24 08       	mov    %r11,0x8(%rsp)
  28:	0f 05                	syscall
  2a:*	c3                   	ret		<-- trapping instruction
  2b:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  32:	00 00 00 
  35:	0f 1f 00             	nopl   (%rax)
  38:	f3 0f 1e fa          	endbr64
  3c:	55                   	push   %rbp
  3d:	bf                   	.byte 0xbf
  3e:	01 00                	add    %eax,(%rax)

Code starting with the faulting instruction
===========================================
   0:	c3                   	ret
   1:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
   8:	00 00 00 
   b:	0f 1f 00             	nopl   (%rax)
   e:	f3 0f 1e fa          	endbr64
  12:	55                   	push   %rbp
  13:	bf                   	.byte 0xbf
  14:	01 00                	add    %eax,(%rax)
[   29.391093][  T335] RSP: 002b:00007ffeeef621b8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   29.391096][  T335] RAX: ffffffffffffffda RBX: 0000000000000316 RCX: 00007f72530d6312
[   29.391097][  T335] RDX: 0000000000000316 RSI: 00005621383bd2b0 RDI: 000000000000000b
[   29.391098][  T335] RBP: 00007ffeeef621e0 R08: 0000000000000000 R09: 0000000000000000
[   29.391099][  T335] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f7252f43390


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