======================================
| [   18.886493][  T337] softirqs last disabled at (49599): __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767)
| [   18.886495][  T337] Preemption disabled at:
| [   18.886496][  T337] vprintk_emit (kernel/printk/printk.c:2471)
| [   18.886504][  T337] Tainted: [W]=WARN
[   18.886505][  T337] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   18.886507][  T337] Call Trace:
[   18.886508][  T337]  <TASK>
[   18.886510][  T337]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   18.886515][  T337]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   18.886517][  T337]  __might_resched.cold (kernel/sched/core.c:9234)
[   18.886521][  T337]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   18.886525][  T337]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   18.886530][  T337]  __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))
[   18.886532][  T337]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   18.886538][  T337]  ? 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)
[   18.886541][  T337]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   18.886544][  T337]  put_chars (drivers/char/virtio_console.c:1176)
[   18.886548][  T337]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   18.886551][  T337]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   18.886556][  T337]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   18.886563][  T337]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   18.886565][  T337]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   18.886569][  T337]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   18.886572][  T337]  console_emit_next_record (kernel/printk/printk.c:3183)
[   18.886576][  T337]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   18.886580][  T337]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   18.886582][  T337]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   18.886586][  T337]  console_flush_one_record (kernel/printk/printk.c:3268)
[   18.886590][  T337]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   18.886592][  T337]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   18.886597][  T337]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   18.886599][  T337]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   18.886601][  T337]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   18.886603][  T337]  ? 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))
[   18.886607][  T337]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   18.886608][  T337]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   18.886611][  T337]  vprintk_emit (kernel/printk/printk.c:2479)
[   18.886615][  T337]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   18.886617][  T337]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   18.886620][  T337]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   18.886621][  T337]  ? fast_dput (./include/linux/rcupdate.h:319 (discriminator 2) ./include/linux/rcupdate.h:880 (discriminator 2) fs/dcache.c:948 (discriminator 2))
[   18.886625][  T337]  ? 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
[   18.886629][  T337]  _printk (kernel/printk/printk.c:2504)
[   18.886632][  T337]  ? snapshot_read.cold (user.c:?)
[   18.886635][  T337]  ? __up_write (kernel/locking/rwsem.c:1422 (discriminator 1))
[   18.886639][  T337]  ? 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
[   18.886642][  T337]  ? 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)
[   18.886646][  T337] init_netconsole (drivers/net/netconsole.c:1286) netconsole
[   18.886649][  T337]  ? 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
[   18.886656][  T337]  ? 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
[   18.886658][  T337]  do_one_initcall (init/main.c:1357)
[   18.886661][  T337]  ? trace_event_raw_event_initcall_level (./include/trace/events/initcall.h:10)
[   18.886666][  T337]  ? do_init_module (./include/linux/slab.h:991 (discriminator 1) kernel/module/main.c:3105 (discriminator 1))
[   18.886669][  T337]  ? kasan_unpoison (mm/kasan/shadow.c:146 mm/kasan/shadow.c:178)
[   18.886674][  T337]  do_init_module (kernel/module/main.c:3117)
[   18.886677][  T337]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4488)
[   18.886681][  T337]  ? free_module (./include/trace/events/module.h:50 (discriminator 19))
[   18.886684][  T337]  ? kfree (./include/linux/kasan.h:235 mm/slub.c:2748 mm/slub.c:6499 mm/slub.c:6792)
[   18.886688][  T337]  load_module (kernel/module/main.c:3593)
[   18.886695][  T337]  ? layout_and_allocate.isra.0 (kernel/module/main.c:3016)
[   18.886698][  T337]  ? __ia32_sys_fsconfig (??:?)
[   18.886701][  T337]  ? add_chain_cache (kernel/locking/lockdep.c:3782)
[   18.886706][  T337]  init_module_from_file (kernel/module/main.c:3790)
[   18.886709][  T337]  ? __ia32_sys_init_module (kernel/module/main.c:3647)
[   18.886717][  T337]  ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[   18.886720][  T337]  ? 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)
[   18.886723][  T337]  idempotent_init_module (kernel/module/main.c:3802)
[   18.886726][  T337]  ? init_module_from_file (kernel/module/main.c:3791)
[   18.886732][  T337]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   18.886734][  T337]  ? cap_capable (./include/trace/events/capability.h:26 (discriminator 22) security/commoncap.c:130 (discriminator 22))
[   18.886739][  T337]  __x64_sys_finit_module (kernel/module/main.c:3828 kernel/module/main.c:3812 kernel/module/main.c:3812)
[   18.886741][  T337]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[   18.886745][  T337]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   18.886747][  T337]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   18.886750][  T337]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   18.886752][  T337] RIP: 0033:0x7f808133037d
[   18.886755][  T337] 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
[   18.886757][  T337] RSP: 002b:00007ffe66d2a2f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000139
[   18.886759][  T337] RAX: ffffffffffffffda RBX: 0000557469656700 RCX: 00007f808133037d
[   18.886761][  T337] RDX: 0000000000000000 RSI: 0000557441d14ffd RDI: 0000000000000005
[   18.886762][  T337] RBP: 00007ffe66d2a390 R08: 0000000000000000 R09: 0000000000000000
[   18.886762][  T337] R10: 0000000000000000 R11: 0000000000000246 R12: 0000557441d14ffd
[   18.886763][  T337] R13: 0000557469656810 R14: 0000000000040000 R15: 0000000000000000
| [   20.272746][  T393] softirqs last disabled at (338351): __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767)
| [   20.272748][  T393] Preemption disabled at:
| [   20.272749][  T393] vprintk_emit (kernel/printk/printk.c:2471)
| [   20.272758][  T393] Tainted: [W]=WARN
[   20.272759][  T393] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   20.272760][  T393] Call Trace:
[   20.272762][  T393]  <TASK>
[   20.272764][  T393]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   20.272769][  T393]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   20.272771][  T393]  __might_resched.cold (kernel/sched/core.c:9234)
[   20.272776][  T393]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   20.272780][  T393]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   20.272785][  T393]  __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))
[   20.272787][  T393]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   20.272794][  T393]  ? 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)
[   20.272801][  T393]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   20.272805][  T393]  put_chars (drivers/char/virtio_console.c:1176)
[   20.272808][  T393]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   20.272810][  T393]  ? printk_get_next_message (kernel/printk/printk.c:3072)
[   20.272813][  T393]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   20.272816][  T393]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   20.272820][  T393]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   20.272823][  T393]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   20.272825][  T393]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   20.272829][  T393]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   20.272832][  T393]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   20.272835][  T393]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   20.272839][  T393]  console_emit_next_record (kernel/printk/printk.c:3183)
[   20.272842][  T393]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   20.272846][  T393]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   20.272849][  T393]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   20.272853][  T393]  console_flush_one_record (kernel/printk/printk.c:3268)
[   20.272857][  T393]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   20.272858][  T393]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   20.272865][  T393]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   20.272868][  T393]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   20.272870][  T393]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   20.272872][  T393]  ? 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))
[   20.272876][  T393]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   20.272877][  T393]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   20.272880][  T393]  vprintk_emit (kernel/printk/printk.c:2479)
[   20.272884][  T393]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   20.272888][  T393]  ? kasan_save_track (mm/kasan/common.c:78)
[   20.272893][  T393]  _printk (kernel/printk/printk.c:2504)
[   20.272896][  T393]  ? snapshot_read.cold (user.c:?)
[   20.272900][  T393]  ? tracefs_init_fs_context (./include/linux/slab.h:991 (discriminator 1) ./include/linux/slab.h:1312 (discriminator 1) fs/tracefs/inode.c:506 (discriminator 1))
[   20.272907][  T393]  trace_automount.cold (kernel/trace/trace.c:8994 (discriminator 1))
[   20.272911][  T393]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   20.272913][  T393]  __traverse_mounts (fs/namei.c:1565 fs/namei.c:1618)
[   20.272919][  T393]  step_into_slowpath (fs/namei.c:1647 fs/namei.c:1749 fs/namei.c:2104)
[   20.272922][  T393]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   20.272925][  T393]  ? pick_link (fs/namei.c:798 (discriminator 12))
[   20.272928][  T393]  ? __d_lookup (./include/linux/rcupdate.h:882 fs/dcache.c:2638)
[   20.272932][  T393]  ? lookup_fast (fs/namei.c:1878)
[   20.272936][  T393]  link_path_walk (fs/namei.c:2152 fs/namei.c:2288 fs/namei.c:2656)
[   20.272939][  T393]  ? __raw_spin_lock_init (./include/linux/lockdep.h:135 ./include/linux/lockdep.h:142 kernel/locking/spinlock_debug.c:25)
[   20.272941][  T393]  ? vfs_rename (./include/linux/list.h:457 (discriminator 5))
[   20.272944][  T393]  ? __asan_memset (mm/kasan/shadow.c:84 (discriminator 1))
[   20.272947][  T393]  ? init_file.isra.0 (./include/linux/instrumented.h:97 ./include/linux/atomic/atomic-instrumented.h:3223 ./include/linux/file_ref.h:61 fs/file_table.c:229)
[   20.272951][  T393]  path_openat (fs/namei.c:4996 (discriminator 1))
[   20.272952][  T393]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   20.272954][  T393]  ? kernel_tmpfile_open (fs/namei.c:4942)
[   20.272958][  T393]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   20.272962][  T393]  do_file_open (fs/namei.c:5029)
[   20.272965][  T393]  ? path_openat (./include/linux/mount.h:68 (discriminator 3))
[   20.272967][  T393]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   20.272976][  T393]  ? _raw_spin_unlock (./include/linux/spinlock_api_smp.h:201 (discriminator 1) kernel/locking/spinlock.c:213 (discriminator 1))
[   20.272980][  T393]  ? alloc_fd (./include/linux/spinlock.h:401 fs/file.c:610)
[   20.272986][  T393]  do_sys_openat2 (fs/open.c:1417 (discriminator 5))
[   20.272989][  T393]  ? build_open_flags (fs/open.c:1319 (discriminator 3))
[   20.272992][  T393]  ? kmem_cache_free (./include/linux/kasan.h:235 mm/slub.c:2748 mm/slub.c:6499 mm/slub.c:6626)
[   20.272997][  T393]  __x64_sys_openat (fs/open.c:1423 fs/open.c:1439 fs/open.c:1434 fs/open.c:1434)
[   20.272999][  T393]  ? generic_file_open (./include/linux/fs.h:1143 (discriminator 4))
[   20.273002][  T393]  ? __x64_sys_open (fs/open.c:1427)
[   20.273005][  T393]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   20.273008][  T393]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[   20.273012][  T393]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   20.273014][  T393]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   20.273018][  T393]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   20.273020][  T393] RIP: 0033:0x7fb960e0b54e
[   20.273024][  T393] Code: 4d 89 d8 e8 b4 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 03 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 b4 bd 00 00       	call   0xbdbc
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 03 ff ff ff       	call   0xffffffffffffff3c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 03 ff ff ff       	call   0xffffffffffffff12
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[   20.273026][  T393] RSP: 002b:00007ffdf82a8ca0 EFLAGS: 00000202 ORIG_RAX: 0000000000000101
[   20.273029][  T393] RAX: ffffffffffffffda RBX: 000056206663f010 RCX: 00007fb960e0b54e
[   20.273030][  T393] RDX: 0000000000000000 RSI: 0000562066749aa0 RDI: ffffffffffffff9c
[   20.273031][  T393] RBP: 00007ffdf82a8cb0 R08: 0000000000000000 R09: 0000000000000000
[   20.273032][  T393] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000008
[   20.273033][  T393] R13: 00007fb9612f444d R14: 00007fb9612f444d R15: 0000000000000001
| [   21.314767][  T336] softirqs last disabled at (320180): __alloc_skb (./include/linux/bottom_half.h:20 (discriminator 2) net/core/skbuff.c:697 (discriminator 2))
| [   21.314770][  T336] Preemption disabled at:
| [   21.314770][  T336] vprintk_emit (kernel/printk/printk.c:2471)
| [   21.314780][  T336] Tainted: [W]=WARN
[   21.314781][  T336] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   21.314783][  T336] Call Trace:
[   21.314784][  T336]  <TASK>
[   21.314786][  T336]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   21.314791][  T336]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   21.314794][  T336]  __might_resched.cold (kernel/sched/core.c:9234)
[   21.314798][  T336]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   21.314806][  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)
[   21.314811][  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))
[   21.314813][  T336]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   21.314820][  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)
[   21.314823][  T336]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   21.314826][  T336]  put_chars (drivers/char/virtio_console.c:1176)
[   21.314829][  T336]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   21.314831][  T336]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   21.314836][  T336]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   21.314838][  T336]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   21.314843][  T336]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   21.314846][  T336]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   21.314851][  T336]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   21.314855][  T336]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   21.314860][  T336]  console_emit_next_record (kernel/printk/printk.c:3183)
[   21.314865][  T336]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   21.314870][  T336]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   21.314872][  T336]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   21.314877][  T336]  console_flush_one_record (kernel/printk/printk.c:3268)
[   21.314881][  T336]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   21.314883][  T336]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   21.314889][  T336]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   21.314892][  T336]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   21.314893][  T336]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   21.314896][  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))
[   21.314900][  T336]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   21.314901][  T336]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   21.314905][  T336]  vprintk_emit (kernel/printk/printk.c:2479)
[   21.314908][  T336]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   21.314911][  T336]  ? rcu_gp_is_expedited (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:32 kernel/rcu/update.c:196)
[   21.314913][  T336]  ? synchronize_rcu (kernel/rcu/tree.c:3410)
[   21.314917][  T336]  _printk (kernel/printk/printk.c:2504)
[   21.314920][  T336]  ? snapshot_read.cold (user.c:?)
[   21.314922][  T336]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   21.314927][  T336]  ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:470 (discriminator 2) kernel/locking/lockdep.c:4427 (discriminator 2))
[   21.314928][  T336]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4488)
[   21.314932][  T336]  ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:211 (discriminator 1) kernel/locking/spinlock.c:221 (discriminator 1))
[   21.314936][  T336]  ? __free_object (./include/linux/irqflags.h:266 (discriminator 6) lib/debugobjects.c:536 (discriminator 6))
[   21.314941][  T336] enabled_store.cold (drivers/net/netconsole.c:1071 (discriminator 1)) netconsole
[   21.314944][  T336]  ? __kasan_kmalloc (mm/kasan/common.c:398 mm/kasan/common.c:415)
[   21.314947][  T336]  ? netconsole_write_ext (drivers/net/netconsole.c:2504) netconsole
[   21.314950][  T336]  ? down_write_killable_nested (./arch/x86/include/asm/atomic64_64.h:20)
[   21.314952][  T336]  ? __kmalloc_cache_noprof (mm/slub.c:5561 (discriminator 1))
[   21.314954][  T336]  ? configfs_write_iter (./include/linux/slab.h:991 (discriminator 1) fs/configfs/file.c:187 (discriminator 1) fs/configfs/file.c:227 (discriminator 1))
[   21.314958][  T336]  ? netconsole_write_ext (drivers/net/netconsole.c:2504) netconsole
[   21.314960][  T336]  configfs_write_iter (fs/configfs/file.c:207 fs/configfs/file.c:229)
[   21.314963][  T336]  ? configfs_bin_write_iter (fs/configfs/file.c:287 (discriminator 1))
[   21.314965][  T336]  new_sync_write (fs/read_write.c:595)
[   21.314969][  T336]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   21.314972][  T336]  ? new_sync_read (./include/linux/ioprio.h:41)
[   21.314975][  T336]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   21.314977][  T336]  ? ksys_write (fs/read_write.c:739)
[   21.314984][  T336]  vfs_write (fs/read_write.c:687)
[   21.314988][  T336]  ksys_write (fs/read_write.c:739)
[   21.314991][  T336]  ? __ia32_sys_read (fs/read_write.c:723)
[   21.314994][  T336]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   21.314998][  T336]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   21.315000][  T336]  ? common_interrupt (arch/x86/kernel/irq.c:273 (discriminator 18))
[   21.315003][  T336]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   21.315005][  T336] RIP: 0033:0x7f478be2d312
[   21.315009][  T336] 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)
[   21.315010][  T336] RSP: 002b:00007ffc86445258 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   21.315013][  T336] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f478be2d312
[   21.315015][  T336] RDX: 0000000000000001 RSI: 0000563f6f4862b0 RDI: 000000000000000b
[   21.315016][  T336] RBP: 00007ffc86445280 R08: 0000000000000000 R09: 0000000000000000
[   21.315017][  T336] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f478bc9a390
[   21.315018][  T336] R13: 0000563f6f4862b0 R14: 000000000000000b R15: 00007f478bc290d0
| [   22.663792][  T336] softirqs last disabled at (339759): __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767)
| [   22.663795][  T336] Preemption disabled at:
| [   22.663796][  T336] vprintk_emit (kernel/printk/printk.c:2471)
| [   22.663805][  T336] Tainted: [W]=WARN
[   22.663806][  T336] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   22.663814][  T336] Call Trace:
[   22.663815][  T336]  <TASK>
[   22.663817][  T336]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   22.663823][  T336]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   22.663825][  T336]  __might_resched.cold (kernel/sched/core.c:9234)
[   22.663830][  T336]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   22.663834][  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)
[   22.663838][  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))
[   22.663841][  T336]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   22.663847][  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)
[   22.663850][  T336]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   22.663854][  T336]  put_chars (drivers/char/virtio_console.c:1176)
[   22.663857][  T336]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   22.663861][  T336]  ? printk_get_next_message (kernel/printk/printk.c:3072)
[   22.663865][  T336]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   22.663868][  T336]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   22.663871][  T336]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   22.663875][  T336]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   22.663876][  T336]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   22.663881][  T336]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   22.663884][  T336]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   22.663887][  T336]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   22.663891][  T336]  console_emit_next_record (kernel/printk/printk.c:3183)
[   22.663894][  T336]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   22.663898][  T336]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   22.663901][  T336]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   22.663904][  T336]  console_flush_one_record (kernel/printk/printk.c:3268)
[   22.663908][  T336]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   22.663910][  T336]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   22.663915][  T336]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   22.663918][  T336]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   22.663920][  T336]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   22.663922][  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))
[   22.663925][  T336]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   22.663927][  T336]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   22.663930][  T336]  vprintk_emit (kernel/printk/printk.c:2479)
[   22.663933][  T336]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   22.663936][  T336]  ? _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)
[   22.663941][  T336]  devkmsg_emit.constprop.0 (kernel/printk/printk.c:733)
[   22.663945][  T336]  ? vprintk_emit.cold (kernel/printk/printk.c:2449)
[   22.663949][  T336]  ? __kmalloc_noprof (mm/slub.c:5415 mm/slub.c:5439)
[   22.663951][  T336]  ? idr_get_free (??:?)
[   22.663954][  T336]  ? devkmsg_write (./include/linux/slab.h:995 kernel/printk/printk.c:762)
[   22.663957][  T336]  ? _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)
[   22.663959][  T336]  devkmsg_write.cold (kernel/printk/printk.c:796)
[   22.663962][  T336]  ? vprintk_default (kernel/printk/printk.c:2494)
[   22.663966][  T336]  ? vprintk_default (kernel/printk/printk.c:2494)
[   22.663969][  T336]  new_sync_write (fs/read_write.c:595)
[   22.663975][  T336]  ? new_sync_read (./include/linux/ioprio.h:41)
[   22.663979][  T336]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   22.663984][  T336]  ? __fget_files (./include/linux/rcupdate.h:882 fs/file.c:1100)
[   22.663987][  T336]  vfs_write (fs/read_write.c:687)
[   22.663991][  T336]  ksys_write (fs/read_write.c:739)
[   22.663993][  T336]  ? __ia32_sys_read (fs/read_write.c:723)
[   22.663996][  T336]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   22.663999][  T336]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   22.664002][  T336]  ? irq_exit_rcu (kernel/softirq.c:786)
[   22.664005][  T336]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   22.664007][  T336] RIP: 0033:0x7f478be2d312
[   22.664011][  T336] 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)
[   22.664013][  T336] RSP: 002b:00007ffc86445258 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   22.664016][  T336] RAX: ffffffffffffffda RBX: 00000000000002ee RCX: 00007f478be2d312
[   22.664018][  T336] RDX: 00000000000002ee RSI: 0000563f6f4862b0 RDI: 000000000000000b
[   22.664019][  T336] RBP: 00007ffc86445280 R08: 0000000000000000 R09: 0000000000000000
[   22.664020][  T336] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f478bc9a390
[   22.664021][  T336] R13: 0000563f6f4862b0 R14: 000000000000000b R15: 00007f478bc290d0
| [   24.072406][  T336] softirqs last disabled at (365721): __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767)
| [   24.072409][  T336] Preemption disabled at:
| [   24.072409][  T336] vprintk_emit (kernel/printk/printk.c:2471)
| [   24.072418][  T336] Tainted: [W]=WARN
[   24.072419][  T336] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   24.072422][  T336] Call Trace:
[   24.072423][  T336]  <TASK>
[   24.072425][  T336]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   24.072430][  T336]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   24.072433][  T336]  __might_resched.cold (kernel/sched/core.c:9234)
[   24.072437][  T336]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   24.072441][  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)
[   24.072446][  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))
[   24.072448][  T336]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   24.072455][  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)
[   24.072458][  T336]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   24.072461][  T336]  put_chars (drivers/char/virtio_console.c:1176)
[   24.072465][  T336]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   24.072467][  T336]  ? printk_get_next_message (kernel/printk/printk.c:3072)
[   24.072470][  T336]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   24.072472][  T336]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   24.072476][  T336]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   24.072480][  T336]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   24.072482][  T336]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   24.072486][  T336]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   24.072489][  T336]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   24.072492][  T336]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   24.072496][  T336]  console_emit_next_record (kernel/printk/printk.c:3183)
[   24.072499][  T336]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   24.072504][  T336]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   24.072506][  T336]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   24.072509][  T336]  console_flush_one_record (kernel/printk/printk.c:3268)
[   24.072513][  T336]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   24.072515][  T336]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   24.072520][  T336]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   24.072523][  T336]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   24.072524][  T336]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   24.072527][  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))
[   24.072530][  T336]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   24.072532][  T336]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   24.072535][  T336]  vprintk_emit (kernel/printk/printk.c:2479)
[   24.072538][  T336]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   24.072541][  T336]  ? _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)
[   24.072547][  T336]  devkmsg_emit.constprop.0 (kernel/printk/printk.c:733)
[   24.072551][  T336]  ? vprintk_emit.cold (kernel/printk/printk.c:2449)
[   24.072554][  T336]  ? __kmalloc_noprof (mm/slub.c:5415 mm/slub.c:5439)
[   24.072556][  T336]  ? idr_get_free (??:?)
[   24.072560][  T336]  ? devkmsg_write (./include/linux/slab.h:995 kernel/printk/printk.c:762)
[   24.072563][  T336]  ? _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)
[   24.072565][  T336]  devkmsg_write.cold (kernel/printk/printk.c:796)
[   24.072568][  T336]  ? vprintk_default (kernel/printk/printk.c:2494)
[   24.072572][  T336]  ? vprintk_default (kernel/printk/printk.c:2494)
[   24.072575][  T336]  new_sync_write (fs/read_write.c:595)
[   24.072580][  T336]  ? new_sync_read (./include/linux/ioprio.h:41)
[   24.072585][  T336]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   24.072589][  T336]  ? __fget_files (./include/linux/rcupdate.h:882 fs/file.c:1100)
[   24.072593][  T336]  vfs_write (fs/read_write.c:687)
[   24.072596][  T336]  ksys_write (fs/read_write.c:739)
[   24.072599][  T336]  ? __ia32_sys_read (fs/read_write.c:723)
[   24.072601][  T336]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   24.072605][  T336]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   24.072607][  T336]  ? irq_exit_rcu (kernel/softirq.c:786)
[   24.072610][  T336]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   24.072612][  T336] RIP: 0033:0x7f478be2d312
[   24.072617][  T336] 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)
[   24.072619][  T336] RSP: 002b:00007ffc86445258 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   24.072622][  T336] RAX: ffffffffffffffda RBX: 00000000000002ee RCX: 00007f478be2d312
[   24.072623][  T336] RDX: 00000000000002ee RSI: 0000563f6f4862b0 RDI: 000000000000000b
[   24.072624][  T336] RBP: 00007ffc86445280 R08: 0000000000000000 R09: 0000000000000000
[   24.072625][  T336] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f478bc9a390
[   24.072626][  T336] R13: 0000563f6f4862b0 R14: 000000000000000b R15: 00007f478bc290d0
| [   25.088357][  T336] softirqs last disabled at (403196): __alloc_skb (./include/linux/bottom_half.h:20 (discriminator 2) net/core/skbuff.c:697 (discriminator 2))
| [   25.088359][  T336] Preemption disabled at:
| [   25.088360][  T336] vprintk_emit (kernel/printk/printk.c:2471)
| [   25.088369][  T336] Tainted: [W]=WARN
[   25.088370][  T336] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   25.088372][  T336] Call Trace:
[   25.088374][  T336]  <TASK>
[   25.088375][  T336]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   25.088381][  T336]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   25.088383][  T336]  __might_resched.cold (kernel/sched/core.c:9234)
[   25.088388][  T336]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   25.088392][  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)
[   25.088397][  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))
[   25.088399][  T336]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   25.088406][  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)
[   25.088409][  T336]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   25.088412][  T336]  put_chars (drivers/char/virtio_console.c:1176)
[   25.088416][  T336]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   25.088417][  T336]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   25.088422][  T336]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   25.088424][  T336]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   25.088429][  T336]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   25.088432][  T336]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   25.088437][  T336]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   25.088441][  T336]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   25.088446][  T336]  console_emit_next_record (kernel/printk/printk.c:3183)
[   25.088450][  T336]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   25.088454][  T336]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   25.088457][  T336]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   25.088461][  T336]  console_flush_one_record (kernel/printk/printk.c:3268)
[   25.088465][  T336]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   25.088467][  T336]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   25.088472][  T336]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   25.088475][  T336]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   25.088477][  T336]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   25.088479][  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))
[   25.088483][  T336]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   25.088485][  T336]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   25.088488][  T336]  vprintk_emit (kernel/printk/printk.c:2479)
[   25.088492][  T336]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   25.088495][  T336]  ? rcu_gp_is_expedited (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:32 kernel/rcu/update.c:196)
[   25.088496][  T336]  ? synchronize_rcu (kernel/rcu/tree.c:3410)
[   25.088500][  T336]  _printk (kernel/printk/printk.c:2504)
[   25.088504][  T336]  ? snapshot_read.cold (user.c:?)
[   25.088506][  T336]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   25.088510][  T336]  ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:470 (discriminator 2) kernel/locking/lockdep.c:4427 (discriminator 2))
[   25.088511][  T336]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4488)
[   25.088515][  T336]  ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:211 (discriminator 1) kernel/locking/spinlock.c:221 (discriminator 1))
[   25.088518][  T336]  ? __free_object (./include/linux/irqflags.h:266 (discriminator 6) lib/debugobjects.c:536 (discriminator 6))
[   25.088523][  T336] enabled_store.cold (drivers/net/netconsole.c:1071 (discriminator 1)) netconsole
[   25.088526][  T336]  ? __kasan_kmalloc (mm/kasan/common.c:398 mm/kasan/common.c:415)
[   25.088530][  T336]  ? netconsole_write_ext (drivers/net/netconsole.c:2504) netconsole
[   25.088532][  T336]  ? down_write_killable_nested (./arch/x86/include/asm/atomic64_64.h:20)
[   25.088534][  T336]  ? __kmalloc_cache_noprof (mm/slub.c:5561 (discriminator 1))
[   25.088536][  T336]  ? configfs_write_iter (./include/linux/slab.h:991 (discriminator 1) fs/configfs/file.c:187 (discriminator 1) fs/configfs/file.c:227 (discriminator 1))
[   25.088540][  T336]  ? netconsole_write_ext (drivers/net/netconsole.c:2504) netconsole
[   25.088542][  T336]  configfs_write_iter (fs/configfs/file.c:207 fs/configfs/file.c:229)
[   25.088545][  T336]  ? configfs_bin_write_iter (fs/configfs/file.c:287 (discriminator 1))
[   25.088547][  T336]  new_sync_write (fs/read_write.c:595)
[   25.088551][  T336]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   25.088553][  T336]  ? new_sync_read (./include/linux/ioprio.h:41)
[   25.088557][  T336]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   25.088559][  T336]  ? ksys_write (fs/read_write.c:739)
[   25.088565][  T336]  vfs_write (fs/read_write.c:687)
[   25.088569][  T336]  ksys_write (fs/read_write.c:739)
[   25.088572][  T336]  ? __ia32_sys_read (fs/read_write.c:723)
[   25.088575][  T336]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   25.088578][  T336]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   25.088580][  T336]  ? irq_exit_rcu (kernel/softirq.c:786)
[   25.088584][  T336]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   25.088587][  T336] RIP: 0033:0x7f478be2d312
[   25.088591][  T336] 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)
[   25.088593][  T336] RSP: 002b:00007ffc86445258 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   25.088595][  T336] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f478be2d312
[   25.088597][  T336] RDX: 0000000000000001 RSI: 0000563f6f4862b0 RDI: 000000000000000b
[   25.088598][  T336] RBP: 00007ffc86445280 R08: 0000000000000000 R09: 0000000000000000
[   25.088599][  T336] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f478bc9a390
[   25.088600][  T336] R13: 0000563f6f4862b0 R14: 000000000000000b R15: 00007f478bc290d0
| [   26.416307][  T336] softirqs last disabled at (426005): __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767)
| [   26.416309][  T336] Preemption disabled at:
| [   26.416310][  T336] vprintk_emit (kernel/printk/printk.c:2471)
| [   26.416321][  T336] Tainted: [W]=WARN
[   26.416322][  T336] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   26.416324][  T336] Call Trace:
[   26.416326][  T336]  <TASK>
[   26.416328][  T336]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   26.416333][  T336]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   26.416335][  T336]  __might_resched.cold (kernel/sched/core.c:9234)
[   26.416340][  T336]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   26.416344][  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)
[   26.416349][  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))
[   26.416351][  T336]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   26.416357][  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)
[   26.416360][  T336]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   26.416364][  T336]  put_chars (drivers/char/virtio_console.c:1176)
[   26.416367][  T336]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   26.416369][  T336]  ? printk_get_next_message (kernel/printk/printk.c:3072)
[   26.416373][  T336]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   26.416375][  T336]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   26.416379][  T336]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   26.416383][  T336]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   26.416385][  T336]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   26.416389][  T336]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   26.416392][  T336]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   26.416395][  T336]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   26.416399][  T336]  console_emit_next_record (kernel/printk/printk.c:3183)
[   26.416402][  T336]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   26.416407][  T336]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   26.416409][  T336]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   26.416413][  T336]  console_flush_one_record (kernel/printk/printk.c:3268)
[   26.416417][  T336]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   26.416419][  T336]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   26.416424][  T336]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   26.416426][  T336]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   26.416428][  T336]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   26.416430][  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))
[   26.416434][  T336]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   26.416435][  T336]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   26.416439][  T336]  vprintk_emit (kernel/printk/printk.c:2479)
[   26.416442][  T336]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   26.416445][  T336]  ? _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)
[   26.416451][  T336]  devkmsg_emit.constprop.0 (kernel/printk/printk.c:733)
[   26.416454][  T336]  ? vprintk_emit.cold (kernel/printk/printk.c:2449)
[   26.416458][  T336]  ? __kmalloc_noprof (mm/slub.c:5415 mm/slub.c:5439)
[   26.416460][  T336]  ? idr_get_free (??:?)
[   26.416463][  T336]  ? devkmsg_write (./include/linux/slab.h:995 kernel/printk/printk.c:762)
[   26.416467][  T336]  ? _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)
[   26.416469][  T336]  devkmsg_write.cold (kernel/printk/printk.c:796)
[   26.416472][  T336]  ? vprintk_default (kernel/printk/printk.c:2494)
[   26.416476][  T336]  ? vprintk_default (kernel/printk/printk.c:2494)
[   26.416478][  T336]  new_sync_write (fs/read_write.c:595)
[   26.416486][  T336]  ? new_sync_read (./include/linux/ioprio.h:41)
[   26.416490][  T336]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   26.416495][  T336]  ? __fget_files (./include/linux/rcupdate.h:882 fs/file.c:1100)
[   26.416498][  T336]  vfs_write (fs/read_write.c:687)
[   26.416502][  T336]  ksys_write (fs/read_write.c:739)
[   26.416505][  T336]  ? __ia32_sys_read (fs/read_write.c:723)
[   26.416508][  T336]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   26.416511][  T336]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   26.416514][  T336]  ? irq_exit_rcu (kernel/softirq.c:786)
[   26.416516][  T336]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   26.416519][  T336] RIP: 0033:0x7f478be2d312
[   26.416523][  T336] 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)
[   26.416525][  T336] RSP: 002b:00007ffc86445258 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   26.416528][  T336] RAX: ffffffffffffffda RBX: 0000000000000316 RCX: 00007f478be2d312
[   26.416530][  T336] RDX: 0000000000000316 RSI: 0000563f6f4862b0 RDI: 000000000000000b
[   26.416531][  T336] RBP: 00007ffc86445280 R08: 0000000000000000 R09: 0000000000000000
[   26.416532][  T336] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f478bc9a390
[   26.416532][  T336] R13: 0000563f6f4862b0 R14: 000000000000000b R15: 00007f478bc290d0
| [   27.790124][  T336] softirqs last disabled at (452439): __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767)
| [   27.790126][  T336] Preemption disabled at:
| [   27.790126][  T336] vprintk_emit (kernel/printk/printk.c:2471)
| [   27.790135][  T336] Tainted: [W]=WARN
[   27.790136][  T336] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   27.790138][  T336] Call Trace:
[   27.790140][  T336]  <TASK>
[   27.790141][  T336]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   27.790147][  T336]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   27.790149][  T336]  __might_resched.cold (kernel/sched/core.c:9234)
[   27.790154][  T336]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   27.790158][  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)
[   27.790163][  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))
[   27.790165][  T336]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   27.790172][  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)
[   27.790175][  T336]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   27.790178][  T336]  put_chars (drivers/char/virtio_console.c:1176)
[   27.790181][  T336]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   27.790183][  T336]  ? printk_get_next_message (kernel/printk/printk.c:3072)
[   27.790187][  T336]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   27.790190][  T336]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   27.790194][  T336]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   27.790197][  T336]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   27.790199][  T336]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   27.790203][  T336]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   27.790207][  T336]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   27.790209][  T336]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   27.790213][  T336]  console_emit_next_record (kernel/printk/printk.c:3183)
[   27.790217][  T336]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   27.790221][  T336]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   27.790223][  T336]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   27.790227][  T336]  console_flush_one_record (kernel/printk/printk.c:3268)
[   27.790231][  T336]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   27.790233][  T336]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   27.790238][  T336]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   27.790241][  T336]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   27.790243][  T336]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   27.790245][  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))
[   27.790248][  T336]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   27.790250][  T336]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   27.790253][  T336]  vprintk_emit (kernel/printk/printk.c:2479)
[   27.790257][  T336]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   27.790260][  T336]  ? _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)
[   27.790265][  T336]  devkmsg_emit.constprop.0 (kernel/printk/printk.c:733)
[   27.790269][  T336]  ? vprintk_emit.cold (kernel/printk/printk.c:2449)
[   27.790273][  T336]  ? __kmalloc_noprof (mm/slub.c:5415 mm/slub.c:5439)
[   27.790275][  T336]  ? idr_get_free (??:?)
[   27.790278][  T336]  ? devkmsg_write (./include/linux/slab.h:995 kernel/printk/printk.c:762)
[   27.790281][  T336]  ? _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)
[   27.790284][  T336]  devkmsg_write.cold (kernel/printk/printk.c:796)
[   27.790286][  T336]  ? vprintk_default (kernel/printk/printk.c:2494)
[   27.790291][  T336]  ? vprintk_default (kernel/printk/printk.c:2494)
[   27.790293][  T336]  new_sync_write (fs/read_write.c:595)
[   27.790299][  T336]  ? new_sync_read (./include/linux/ioprio.h:41)
[   27.790303][  T336]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   27.790307][  T336]  ? __fget_files (./include/linux/rcupdate.h:882 fs/file.c:1100)
[   27.790311][  T336]  vfs_write (fs/read_write.c:687)
[   27.790315][  T336]  ksys_write (fs/read_write.c:739)
[   27.790318][  T336]  ? __ia32_sys_read (fs/read_write.c:723)
[   27.790320][  T336]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   27.790324][  T336]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   27.790327][  T336]  ? irq_exit_rcu (kernel/softirq.c:786)
[   27.790329][  T336]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   27.790331][  T336] RIP: 0033:0x7f478be2d312
[   27.790336][  T336] 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)
[   27.790338][  T336] RSP: 002b:00007ffc86445258 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   27.790341][  T336] RAX: ffffffffffffffda RBX: 0000000000000316 RCX: 00007f478be2d312
[   27.790342][  T336] RDX: 0000000000000316 RSI: 0000563f6f4862b0 RDI: 000000000000000b
[   27.790343][  T336] RBP: 00007ffc86445280 R08: 0000000000000000 R09: 0000000000000000
[   27.790344][  T336] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f478bc9a390


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