======================================
| [   21.085510][  T338] softirqs last disabled at (38973): __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767)
| [   21.085512][  T338] Preemption disabled at:
| [   21.085513][  T338] vprintk_emit (kernel/printk/printk.c:2471)
| [   21.085522][  T338] Tainted: [W]=WARN
[   21.085522][  T338] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   21.085524][  T338] Call Trace:
[   21.085526][  T338]  <TASK>
[   21.085528][  T338]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   21.085533][  T338]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   21.085535][  T338]  __might_resched.cold (kernel/sched/core.c:9234)
[   21.085540][  T338]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   21.085544][  T338]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   21.085549][  T338]  __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))
[   21.085551][  T338]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   21.085557][  T338]  ? 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)
[   21.085560][  T338]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   21.085564][  T338]  put_chars (drivers/char/virtio_console.c:1176)
[   21.085567][  T338]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   21.085571][  T338]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   21.085575][  T338]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   21.085582][  T338]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   21.085585][  T338]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   21.085589][  T338]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   21.085592][  T338]  console_emit_next_record (kernel/printk/printk.c:3183)
[   21.085596][  T338]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   21.085600][  T338]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   21.085603][  T338]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   21.085606][  T338]  console_flush_one_record (kernel/printk/printk.c:3268)
[   21.085610][  T338]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   21.085612][  T338]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   21.085617][  T338]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   21.085620][  T338]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   21.085621][  T338]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   21.085624][  T338]  ? 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))
[   21.085627][  T338]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   21.085629][  T338]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   21.085632][  T338]  vprintk_emit (kernel/printk/printk.c:2479)
[   21.085636][  T338]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   21.085638][  T338]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   21.085641][  T338]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   21.085642][  T338]  ? fast_dput (./include/linux/rcupdate.h:319 (discriminator 2) ./include/linux/rcupdate.h:880 (discriminator 2) fs/dcache.c:948 (discriminator 2))
[   21.085647][  T338]  ? 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
[   21.085650][  T338]  _printk (kernel/printk/printk.c:2504)
[   21.085654][  T338]  ? snapshot_read.cold (user.c:?)
[   21.085657][  T338]  ? __up_write (kernel/locking/rwsem.c:1422 (discriminator 1))
[   21.085661][  T338]  ? 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
[   21.085664][  T338]  ? 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)
[   21.085669][  T338] init_netconsole (drivers/net/netconsole.c:1286) netconsole
[   21.085672][  T338]  ? 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
[   21.085679][  T338]  ? 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
[   21.085681][  T338]  do_one_initcall (init/main.c:1357)
[   21.085685][  T338]  ? trace_event_raw_event_initcall_level (./include/trace/events/initcall.h:10)
[   21.085689][  T338]  ? do_init_module (./include/linux/slab.h:991 (discriminator 1) kernel/module/main.c:3105 (discriminator 1))
[   21.085692][  T338]  ? kasan_unpoison (mm/kasan/shadow.c:146 mm/kasan/shadow.c:178)
[   21.085697][  T338]  do_init_module (kernel/module/main.c:3117)
[   21.085701][  T338]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4488)
[   21.085705][  T338]  ? free_module (./include/trace/events/module.h:50 (discriminator 19))
[   21.085710][  T338]  ? kfree (./include/linux/kasan.h:235 mm/slub.c:2748 mm/slub.c:6499 mm/slub.c:6792)
[   21.085716][  T338]  load_module (kernel/module/main.c:3593)
[   21.085723][  T338]  ? layout_and_allocate.isra.0 (kernel/module/main.c:3016)
[   21.085727][  T338]  ? __ia32_sys_fsconfig (??:?)
[   21.085730][  T338]  ? add_chain_cache (kernel/locking/lockdep.c:3782)
[   21.085735][  T338]  init_module_from_file (kernel/module/main.c:3790)
[   21.085738][  T338]  ? __ia32_sys_init_module (kernel/module/main.c:3647)
[   21.085746][  T338]  ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[   21.085749][  T338]  ? 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)
[   21.085752][  T338]  idempotent_init_module (kernel/module/main.c:3802)
[   21.085755][  T338]  ? init_module_from_file (kernel/module/main.c:3791)
[   21.085761][  T338]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   21.085764][  T338]  ? cap_capable (./include/trace/events/capability.h:26 (discriminator 22) security/commoncap.c:130 (discriminator 22))
[   21.085769][  T338]  __x64_sys_finit_module (kernel/module/main.c:3828 kernel/module/main.c:3812 kernel/module/main.c:3812)
[   21.085771][  T338]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[   21.085775][  T338]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   21.085778][  T338]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   21.085780][  T338]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   21.085783][  T338] RIP: 0033:0x7fdd6812c37d
[   21.085786][  T338] 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
[   21.085788][  T338] RSP: 002b:00007ffeba330018 EFLAGS: 00000246 ORIG_RAX: 0000000000000139
[   21.085791][  T338] RAX: ffffffffffffffda RBX: 000055b910c4b700 RCX: 00007fdd6812c37d
[   21.085792][  T338] RDX: 0000000000000000 RSI: 000055b90f71effd RDI: 0000000000000005
[   21.085793][  T338] RBP: 00007ffeba3300b0 R08: 0000000000000000 R09: 0000000000000000
[   21.085794][  T338] R10: 0000000000000000 R11: 0000000000000246 R12: 000055b90f71effd
[   21.085795][  T338] R13: 000055b910c4b810 R14: 0000000000040000 R15: 0000000000000000
| [   22.290792][  T337] softirqs last disabled at (295699): __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767)
| [   22.290795][  T337] Preemption disabled at:
| [   22.290796][  T337] vprintk_emit (kernel/printk/printk.c:2471)
| [   22.290806][  T337] Tainted: [W]=WARN
[   22.290807][  T337] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   22.290809][  T337] Call Trace:
[   22.290811][  T337]  <TASK>
[   22.290813][  T337]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   22.290819][  T337]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   22.290822][  T337]  __might_resched.cold (kernel/sched/core.c:9234)
[   22.290827][  T337]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   22.290831][  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)
[   22.290836][  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))
[   22.290839][  T337]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   22.290846][  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)
[   22.290850][  T337]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   22.290854][  T337]  put_chars (drivers/char/virtio_console.c:1176)
[   22.290857][  T337]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   22.290859][  T337]  ? printk_get_next_message (kernel/printk/printk.c:3072)
[   22.290864][  T337]  ? validate_chain (kernel/locking/lockdep.c:159 kernel/locking/lockdep.c:191 kernel/locking/lockdep.c:3928)
[   22.290870][  T337]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   22.290874][  T337]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   22.290876][  T337]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   22.290881][  T337]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   22.290886][  T337]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   22.290889][  T337]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   22.290894][  T337]  console_emit_next_record (kernel/printk/printk.c:3183)
[   22.290898][  T337]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   22.290903][  T337]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   22.290906][  T337]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   22.290910][  T337]  console_flush_one_record (kernel/printk/printk.c:3268)
[   22.290915][  T337]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   22.290917][  T337]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   22.290922][  T337]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   22.290926][  T337]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   22.290928][  T337]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   22.290930][  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))
[   22.290934][  T337]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   22.290936][  T337]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   22.290939][  T337]  vprintk_emit (kernel/printk/printk.c:2479)
[   22.290944][  T337]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   22.290946][  T337]  ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:470 (discriminator 2) kernel/locking/lockdep.c:4427 (discriminator 2))
[   22.290948][  T337]  ? irqentry_exit (./include/linux/irq-entry-common.h:507 ./include/linux/irq-entry-common.h:542 kernel/entry/common.c:167)
[   22.290952][  T337]  ? irqentry_exit (./include/linux/irq-entry-common.h:507 ./include/linux/irq-entry-common.h:542 kernel/entry/common.c:167)
[   22.290955][  T337]  ? lockdep_hardirqs_off (kernel/locking/lockdep.c:4527)
[   22.290957][  T337]  ? irqentry_enter (./include/linux/irq-entry-common.h:439 kernel/entry/common.c:120)
[   22.290961][  T337]  _printk (kernel/printk/printk.c:2504)
[   22.290965][  T337]  ? snapshot_read.cold (user.c:?)
[   22.290969][  T337]  ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:210 (discriminator 6) kernel/locking/spinlock.c:221 (discriminator 6))
[   22.290973][  T337]  ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:210 (discriminator 12) kernel/locking/spinlock.c:221 (discriminator 12))
[   22.290978][  T337]  register_console (kernel/printk/printk.c:4212 (discriminator 7))
[   22.290982][  T337]  ? get_init_console_seq.constprop.0.isra.0 (kernel/printk/printk.c:4018)
[   22.290985][  T337]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   22.290991][  T337] enabled_store (drivers/net/netconsole.c:1039) netconsole
[   22.290993][  T337]  ? __kasan_kmalloc (mm/kasan/common.c:398 mm/kasan/common.c:415)
[   22.290997][  T337]  ? netconsole_write_ext (drivers/net/netconsole.c:2504) netconsole
[   22.291000][  T337]  ? down_write_killable_nested (./arch/x86/include/asm/atomic64_64.h:20)
[   22.291002][  T337]  ? __kmalloc_cache_noprof (mm/slub.c:5561 (discriminator 1))
[   22.291005][  T337]  ? configfs_write_iter (./include/linux/slab.h:991 (discriminator 1) fs/configfs/file.c:187 (discriminator 1) fs/configfs/file.c:227 (discriminator 1))
[   22.291009][  T337]  ? netconsole_write_ext (drivers/net/netconsole.c:2504) netconsole
[   22.291011][  T337]  configfs_write_iter (fs/configfs/file.c:207 fs/configfs/file.c:229)
[   22.291014][  T337]  ? configfs_bin_write_iter (fs/configfs/file.c:287 (discriminator 1))
[   22.291017][  T337]  new_sync_write (fs/read_write.c:595)
[   22.291021][  T337]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   22.291024][  T337]  ? new_sync_read (./include/linux/ioprio.h:41)
[   22.291028][  T337]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   22.291030][  T337]  ? ksys_write (fs/read_write.c:739)
[   22.291037][  T337]  vfs_write (fs/read_write.c:687)
[   22.291041][  T337]  ksys_write (fs/read_write.c:739)
[   22.291044][  T337]  ? __ia32_sys_read (fs/read_write.c:723)
[   22.291047][  T337]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   22.291051][  T337]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   22.291054][  T337]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   22.291057][  T337]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   22.291060][  T337] RIP: 0033:0x7f5532734312
[   22.291064][  T337] 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)
[   22.291066][  T337] RSP: 002b:00007ffd407cc148 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   22.291069][  T337] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f5532734312
[   22.291071][  T337] RDX: 0000000000000001 RSI: 0000556863ce12b0 RDI: 0000000000000010
[   22.291072][  T337] RBP: 00007ffd407cc170 R08: 0000000000000000 R09: 0000000000000000
[   22.291073][  T337] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f55325a1390
[   22.291074][  T337] R13: 0000556863ce12b0 R14: 0000000000000010 R15: 00007f553252d0d0
| [   23.381138][  T337] softirqs last disabled at (320485): __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767)
| [   23.381144][  T337] Preemption disabled at:
| [   23.381145][  T337] vprintk_emit (kernel/printk/printk.c:2471)
| [   23.381157][  T337] Tainted: [W]=WARN
[   23.381158][  T337] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   23.381161][  T337] Call Trace:
[   23.381163][  T337]  <TASK>
[   23.381165][  T337]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   23.381172][  T337]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   23.381176][  T337]  __might_resched.cold (kernel/sched/core.c:9234)
[   23.381182][  T337]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   23.381188][  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)
[   23.381195][  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))
[   23.381199][  T337]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   23.381208][  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)
[   23.381212][  T337]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   23.381217][  T337]  put_chars (drivers/char/virtio_console.c:1176)
[   23.381222][  T337]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   23.381225][  T337]  ? printk_get_next_message (kernel/printk/printk.c:3072)
[   23.381231][  T337]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   23.381235][  T337]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   23.381242][  T337]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   23.381247][  T337]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   23.381250][  T337]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   23.381257][  T337]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   23.381263][  T337]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   23.381267][  T337]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   23.381273][  T337]  console_emit_next_record (kernel/printk/printk.c:3183)
[   23.381279][  T337]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   23.381286][  T337]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   23.381291][  T337]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   23.381297][  T337]  console_flush_one_record (kernel/printk/printk.c:3268)
[   23.381304][  T337]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   23.381307][  T337]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   23.381315][  T337]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   23.381320][  T337]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   23.381322][  T337]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   23.381326][  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))
[   23.381332][  T337]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   23.381334][  T337]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   23.381340][  T337]  vprintk_emit (kernel/printk/printk.c:2479)
[   23.381346][  T337]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   23.381351][  T337]  ? _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)
[   23.381359][  T337]  devkmsg_emit.constprop.0 (kernel/printk/printk.c:733)
[   23.381365][  T337]  ? vprintk_emit.cold (kernel/printk/printk.c:2449)
[   23.381371][  T337]  ? __kmalloc_noprof (mm/slub.c:5415 mm/slub.c:5439)
[   23.381374][  T337]  ? idr_get_free (??:?)
[   23.381378][  T337]  ? devkmsg_write (./include/linux/slab.h:995 kernel/printk/printk.c:762)
[   23.381383][  T337]  ? _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)
[   23.381387][  T337]  devkmsg_write.cold (kernel/printk/printk.c:796)
[   23.381392][  T337]  ? vprintk_default (kernel/printk/printk.c:2494)
[   23.381395][  T337]  ? finish_task_switch.isra.0 (./include/linux/instrumented.h:112 ./include/linux/atomic/atomic-instrumented.h:1383 ./include/linux/sched/mm.h:54 ./include/linux/sched/mm.h:83 ./include/linux/sched/mm.h:110 kernel/sched/core.c:5402)
[   23.381398][  T337]  ? __switch_to (arch/x86/kernel/process_64.c:403 arch/x86/kernel/process_64.c:663)
[   23.381402][  T337]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   23.381406][  T337]  ? trace_sched_exit_tp (./include/trace/events/sched.h:886 (discriminator 22))
[   23.381410][  T337]  ? vprintk_default (kernel/printk/printk.c:2494)
[   23.381414][  T337]  new_sync_write (fs/read_write.c:595)
[   23.381422][  T337]  ? new_sync_read (./include/linux/ioprio.h:41)
[   23.381430][  T337]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   23.381432][  T337]  ? preempt_schedule_irq (kernel/sched/core.c:7591)
[   23.381441][  T337]  ? __fget_files (./include/linux/rcupdate.h:882 fs/file.c:1100)
[   23.381446][  T337]  vfs_write (fs/read_write.c:687)
[   23.381453][  T337]  ksys_write (fs/read_write.c:739)
[   23.381458][  T337]  ? __ia32_sys_read (fs/read_write.c:723)
[   23.381462][  T337]  ? fpregs_restore_userregs (./include/linux/instrumented.h:97 ./include/asm-generic/bitops/instrumented-atomic.h:41 ./include/linux/thread_info.h:109 arch/x86/kernel/fpu/context.h:79)
[   23.381466][  T337]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   23.381472][  T337]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   23.381475][  T337]  ? irq_exit_rcu (kernel/softirq.c:786)
[   23.381479][  T337]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   23.381483][  T337] RIP: 0033:0x7f5532734312
[   23.381492][  T337] 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)
[   23.381495][  T337] RSP: 002b:00007ffd407cc148 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   23.381499][  T337] RAX: ffffffffffffffda RBX: 00000000000002ee RCX: 00007f5532734312
[   23.381501][  T337] RDX: 00000000000002ee RSI: 0000556863ce12b0 RDI: 000000000000000b
[   23.381503][  T337] RBP: 00007ffd407cc170 R08: 0000000000000000 R09: 0000000000000000
[   23.381504][  T337] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f55325a1390
[   23.381506][  T337] R13: 0000556863ce12b0 R14: 000000000000000b R15: 00007f553252d0d0
| [   24.390188][  T337] softirqs last disabled at (349956): __alloc_skb (./include/linux/bottom_half.h:20 (discriminator 2) net/core/skbuff.c:697 (discriminator 2))
| [   24.390192][  T337] Preemption disabled at:
| [   24.390193][  T337] vprintk_emit (kernel/printk/printk.c:2471)
| [   24.390204][  T337] Tainted: [W]=WARN
[   24.390205][  T337] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   24.390207][  T337] Call Trace:
[   24.390209][  T337]  <TASK>
[   24.390211][  T337]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   24.390217][  T337]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   24.390219][  T337]  __might_resched.cold (kernel/sched/core.c:9234)
[   24.390225][  T337]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   24.390229][  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)
[   24.390234][  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))
[   24.390237][  T337]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   24.390244][  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)
[   24.390247][  T337]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   24.390251][  T337]  put_chars (drivers/char/virtio_console.c:1176)
[   24.390255][  T337]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   24.390257][  T337]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   24.390262][  T337]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   24.390265][  T337]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   24.390270][  T337]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   24.390274][  T337]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   24.390280][  T337]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   24.390284][  T337]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   24.390290][  T337]  console_emit_next_record (kernel/printk/printk.c:3183)
[   24.390294][  T337]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   24.390300][  T337]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   24.390302][  T337]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   24.390307][  T337]  console_flush_one_record (kernel/printk/printk.c:3268)
[   24.390312][  T337]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   24.390314][  T337]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   24.390321][  T337]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   24.390324][  T337]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   24.390326][  T337]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   24.390329][  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))
[   24.390333][  T337]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   24.390335][  T337]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   24.390339][  T337]  vprintk_emit (kernel/printk/printk.c:2479)
[   24.390344][  T337]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   24.390347][  T337]  ? rcu_gp_is_expedited (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:32 kernel/rcu/update.c:196)
[   24.390349][  T337]  ? synchronize_rcu (kernel/rcu/tree.c:3410)
[   24.390354][  T337]  _printk (kernel/printk/printk.c:2504)
[   24.390358][  T337]  ? snapshot_read.cold (user.c:?)
[   24.390360][  T337]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   24.390365][  T337]  ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:470 (discriminator 2) kernel/locking/lockdep.c:4427 (discriminator 2))
[   24.390367][  T337]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4488)
[   24.390371][  T337]  ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:211 (discriminator 1) kernel/locking/spinlock.c:221 (discriminator 1))
[   24.390375][  T337]  ? __free_object (./include/linux/irqflags.h:266 (discriminator 6) lib/debugobjects.c:536 (discriminator 6))
[   24.390380][  T337] enabled_store.cold (drivers/net/netconsole.c:1071 (discriminator 1)) netconsole
[   24.390383][  T337]  ? __kasan_kmalloc (mm/kasan/common.c:398 mm/kasan/common.c:415)
[   24.390388][  T337]  ? netconsole_write_ext (drivers/net/netconsole.c:2504) netconsole
[   24.390390][  T337]  ? down_write_killable_nested (./arch/x86/include/asm/atomic64_64.h:20)
[   24.390393][  T337]  ? __kmalloc_cache_noprof (mm/slub.c:5561 (discriminator 1))
[   24.390395][  T337]  ? configfs_write_iter (./include/linux/slab.h:991 (discriminator 1) fs/configfs/file.c:187 (discriminator 1) fs/configfs/file.c:227 (discriminator 1))
[   24.390399][  T337]  ? netconsole_write_ext (drivers/net/netconsole.c:2504) netconsole
[   24.390401][  T337]  configfs_write_iter (fs/configfs/file.c:207 fs/configfs/file.c:229)
[   24.390404][  T337]  ? configfs_bin_write_iter (fs/configfs/file.c:287 (discriminator 1))
[   24.390407][  T337]  new_sync_write (fs/read_write.c:595)
[   24.390411][  T337]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   24.390415][  T337]  ? new_sync_read (./include/linux/ioprio.h:41)
[   24.390419][  T337]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   24.390421][  T337]  ? ksys_write (fs/read_write.c:739)
[   24.390428][  T337]  vfs_write (fs/read_write.c:687)
[   24.390432][  T337]  ksys_write (fs/read_write.c:739)
[   24.390435][  T337]  ? __ia32_sys_read (fs/read_write.c:723)
[   24.390438][  T337]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   24.390442][  T337]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   24.390445][  T337]  ? irq_exit_rcu (kernel/softirq.c:786)
[   24.390449][  T337]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   24.390452][  T337] RIP: 0033:0x7f5532734312
[   24.390456][  T337] 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)
[   24.390458][  T337] RSP: 002b:00007ffd407cc148 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   24.390461][  T337] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f5532734312
[   24.390463][  T337] RDX: 0000000000000001 RSI: 0000556863ce12b0 RDI: 000000000000000b
[   24.390464][  T337] RBP: 00007ffd407cc170 R08: 0000000000000000 R09: 0000000000000000
[   24.390465][  T337] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f55325a1390
[   24.390466][  T337] R13: 0000556863ce12b0 R14: 000000000000000b R15: 00007f553252d0d0
| [   25.780320][  T337] softirqs last disabled at (372123): __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767)
| [   25.780322][  T337] Preemption disabled at:
| [   25.780323][  T337] vprintk_emit (kernel/printk/printk.c:2471)
| [   25.780334][  T337] Tainted: [W]=WARN
[   25.780335][  T337] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   25.780337][  T337] Call Trace:
[   25.780339][  T337]  <TASK>
[   25.780341][  T337]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   25.780347][  T337]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   25.780350][  T337]  __might_resched.cold (kernel/sched/core.c:9234)
[   25.780355][  T337]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   25.780359][  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)
[   25.780364][  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))
[   25.780367][  T337]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   25.780373][  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)
[   25.780376][  T337]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   25.780380][  T337]  put_chars (drivers/char/virtio_console.c:1176)
[   25.780384][  T337]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   25.780386][  T337]  ? printk_get_next_message (kernel/printk/printk.c:3072)
[   25.780389][  T337]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   25.780393][  T337]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   25.780397][  T337]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   25.780401][  T337]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   25.780403][  T337]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   25.780407][  T337]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   25.780411][  T337]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   25.780414][  T337]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   25.780418][  T337]  console_emit_next_record (kernel/printk/printk.c:3183)
[   25.780422][  T337]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   25.780426][  T337]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   25.780428][  T337]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   25.780432][  T337]  console_flush_one_record (kernel/printk/printk.c:3268)
[   25.780436][  T337]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   25.780438][  T337]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   25.780443][  T337]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   25.780446][  T337]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   25.780448][  T337]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   25.780451][  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))
[   25.780454][  T337]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   25.780456][  T337]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   25.780460][  T337]  vprintk_emit (kernel/printk/printk.c:2479)
[   25.780463][  T337]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   25.780466][  T337]  ? _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)
[   25.780472][  T337]  devkmsg_emit.constprop.0 (kernel/printk/printk.c:733)
[   25.780476][  T337]  ? vprintk_emit.cold (kernel/printk/printk.c:2449)
[   25.780480][  T337]  ? __kmalloc_noprof (mm/slub.c:5415 mm/slub.c:5439)
[   25.780482][  T337]  ? idr_get_free (??:?)
[   25.780485][  T337]  ? devkmsg_write (./include/linux/slab.h:995 kernel/printk/printk.c:762)
[   25.780488][  T337]  ? _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)
[   25.780491][  T337]  devkmsg_write.cold (kernel/printk/printk.c:796)
[   25.780494][  T337]  ? vprintk_default (kernel/printk/printk.c:2494)
[   25.780498][  T337]  ? vprintk_default (kernel/printk/printk.c:2494)
[   25.780501][  T337]  new_sync_write (fs/read_write.c:595)
[   25.780507][  T337]  ? new_sync_read (./include/linux/ioprio.h:41)
[   25.780518][  T337]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   25.780522][  T337]  ? __fget_files (./include/linux/rcupdate.h:882 fs/file.c:1100)
[   25.780526][  T337]  vfs_write (fs/read_write.c:687)
[   25.780530][  T337]  ksys_write (fs/read_write.c:739)
[   25.780533][  T337]  ? __ia32_sys_read (fs/read_write.c:723)
[   25.780536][  T337]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   25.780539][  T337]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   25.780542][  T337]  ? irq_exit_rcu (kernel/softirq.c:786)
[   25.780544][  T337]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   25.780547][  T337] RIP: 0033:0x7f5532734312
[   25.780551][  T337] 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)
[   25.780553][  T337] RSP: 002b:00007ffd407cc148 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   25.780557][  T337] RAX: ffffffffffffffda RBX: 00000000000002ee RCX: 00007f5532734312
[   25.780558][  T337] RDX: 00000000000002ee RSI: 0000556863ce12b0 RDI: 000000000000000b
[   25.780560][  T337] RBP: 00007ffd407cc170 R08: 0000000000000000 R09: 0000000000000000
[   25.780561][  T337] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f55325a1390
[   25.780562][  T337] R13: 0000556863ce12b0 R14: 000000000000000b R15: 00007f553252d0d0
| [   26.833898][  T337] softirqs last disabled at (389589): __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767)
| [   26.833901][  T337] Preemption disabled at:
| [   26.833902][  T337] vprintk_emit (kernel/printk/printk.c:2471)
| [   26.833912][  T337] Tainted: [W]=WARN
[   26.833913][  T337] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   26.833915][  T337] Call Trace:
[   26.833917][  T337]  <TASK>
[   26.833918][  T337]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   26.833925][  T337]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   26.833927][  T337]  __might_resched.cold (kernel/sched/core.c:9234)
[   26.833932][  T337]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   26.833936][  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)
[   26.833941][  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))
[   26.833944][  T337]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   26.833951][  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)
[   26.833954][  T337]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   26.833958][  T337]  put_chars (drivers/char/virtio_console.c:1176)
[   26.833961][  T337]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   26.833963][  T337]  ? printk_get_next_message (kernel/printk/printk.c:3072)
[   26.833967][  T337]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   26.833970][  T337]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   26.833974][  T337]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   26.833978][  T337]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   26.833979][  T337]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   26.833984][  T337]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   26.833987][  T337]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   26.833990][  T337]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   26.833994][  T337]  console_emit_next_record (kernel/printk/printk.c:3183)
[   26.833998][  T337]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   26.834002][  T337]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   26.834005][  T337]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   26.834008][  T337]  console_flush_one_record (kernel/printk/printk.c:3268)
[   26.834013][  T337]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   26.834014][  T337]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   26.834019][  T337]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   26.834022][  T337]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   26.834024][  T337]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   26.834027][  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))
[   26.834030][  T337]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   26.834032][  T337]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   26.834035][  T337]  vprintk_emit (kernel/printk/printk.c:2479)
[   26.834039][  T337]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   26.834042][  T337]  ? _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)
[   26.834048][  T337]  devkmsg_emit.constprop.0 (kernel/printk/printk.c:733)
[   26.834052][  T337]  ? vprintk_emit.cold (kernel/printk/printk.c:2449)
[   26.834056][  T337]  ? __kmalloc_noprof (mm/slub.c:5415 mm/slub.c:5439)
[   26.834058][  T337]  ? idr_get_free (??:?)
[   26.834062][  T337]  ? devkmsg_write (./include/linux/slab.h:995 kernel/printk/printk.c:762)
[   26.834065][  T337]  ? _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)
[   26.834067][  T337]  devkmsg_write.cold (kernel/printk/printk.c:796)
[   26.834070][  T337]  ? vprintk_default (kernel/printk/printk.c:2494)
[   26.834075][  T337]  ? vprintk_default (kernel/printk/printk.c:2494)
[   26.834077][  T337]  new_sync_write (fs/read_write.c:595)
[   26.834084][  T337]  ? new_sync_read (./include/linux/ioprio.h:41)
[   26.834088][  T337]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   26.834093][  T337]  ? __fget_files (./include/linux/rcupdate.h:882 fs/file.c:1100)
[   26.834096][  T337]  vfs_write (fs/read_write.c:687)
[   26.834100][  T337]  ksys_write (fs/read_write.c:739)
[   26.834103][  T337]  ? __ia32_sys_read (fs/read_write.c:723)
[   26.834106][  T337]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   26.834109][  T337]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   26.834112][  T337]  ? irq_exit_rcu (kernel/softirq.c:786)
[   26.834115][  T337]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   26.834117][  T337] RIP: 0033:0x7f5532734312
[   26.834122][  T337] 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)
[   26.834124][  T337] RSP: 002b:00007ffd407cc148 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   26.834127][  T337] RAX: ffffffffffffffda RBX: 00000000000002ee RCX: 00007f5532734312
[   26.834128][  T337] RDX: 00000000000002ee RSI: 0000556863ce12b0 RDI: 000000000000000b
[   26.834129][  T337] RBP: 00007ffd407cc170 R08: 0000000000000000 R09: 0000000000000000
[   26.834130][  T337] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f55325a1390
[   26.834131][  T337] R13: 0000556863ce12b0 R14: 000000000000000b R15: 00007f553252d0d0
| [   27.837246][  T337] softirqs last disabled at (415691): __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767)
| [   27.837249][  T337] Preemption disabled at:
| [   27.837249][  T337] vprintk_emit (kernel/printk/printk.c:2471)
| [   27.837260][  T337] Tainted: [W]=WARN
[   27.837261][  T337] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   27.837264][  T337] Call Trace:
[   27.837266][  T337]  <TASK>
[   27.837267][  T337]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   27.837273][  T337]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   27.837276][  T337]  __might_resched.cold (kernel/sched/core.c:9234)
[   27.837281][  T337]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   27.837285][  T337]  ? kmem_cache_alloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5010)
[   27.837290][  T337]  kmem_cache_alloc_noprof (./include/linux/sched/mm.h:322 (discriminator 2) mm/slub.c:4636 (discriminator 2) mm/slub.c:4974 (discriminator 2) mm/slub.c:5010 (discriminator 2))
[   27.837293][  T337]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   27.837296][  T337]  ? __alloc_object (mm/kmemleak.c:504 (discriminator 1) mm/kmemleak.c:686 (discriminator 1))
[   27.837302][  T337]  __alloc_object (mm/kmemleak.c:504 (discriminator 1) mm/kmemleak.c:686 (discriminator 1))
[   27.837304][  T337]  ? kasan_quarantine_reduce (./include/linux/srcu.h:498 mm/kasan/quarantine.c:287)
[   27.837307][  T337]  __create_object (mm/kmemleak.c:801)
[   27.837311][  T337]  __kmalloc_noprof (./include/linux/kmemleak.h:44 mm/slub.c:4696 mm/slub.c:4996 mm/slub.c:5413 mm/slub.c:5439)
[   27.837314][  T337]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   27.837321][  T337]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   27.837324][  T337]  put_chars (drivers/char/virtio_console.c:1176)
[   27.837327][  T337]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   27.837330][  T337]  ? printk_get_next_message (kernel/printk/printk.c:3072)
[   27.837333][  T337]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   27.837336][  T337]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   27.837340][  T337]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   27.837344][  T337]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   27.837345][  T337]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   27.837350][  T337]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   27.837354][  T337]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   27.837357][  T337]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   27.837361][  T337]  console_emit_next_record (kernel/printk/printk.c:3183)
[   27.837365][  T337]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   27.837370][  T337]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   27.837372][  T337]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   27.837376][  T337]  console_flush_one_record (kernel/printk/printk.c:3268)
[   27.837380][  T337]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   27.837382][  T337]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   27.837388][  T337]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   27.837391][  T337]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   27.837392][  T337]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   27.837395][  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))
[   27.837399][  T337]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   27.837401][  T337]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   27.837404][  T337]  vprintk_emit (kernel/printk/printk.c:2479)
[   27.837408][  T337]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   27.837411][  T337]  ? _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)
[   27.837417][  T337]  devkmsg_emit.constprop.0 (kernel/printk/printk.c:733)
[   27.837421][  T337]  ? vprintk_emit.cold (kernel/printk/printk.c:2449)
[   27.837425][  T337]  ? __kmalloc_noprof (mm/slub.c:5415 mm/slub.c:5439)
[   27.837427][  T337]  ? idr_get_free (??:?)
[   27.837430][  T337]  ? devkmsg_write (./include/linux/slab.h:995 kernel/printk/printk.c:762)
[   27.837434][  T337]  ? _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)
[   27.837436][  T337]  devkmsg_write.cold (kernel/printk/printk.c:796)
[   27.837439][  T337]  ? vprintk_default (kernel/printk/printk.c:2494)
[   27.837444][  T337]  ? vprintk_default (kernel/printk/printk.c:2494)
[   27.837447][  T337]  new_sync_write (fs/read_write.c:595)
[   27.837452][  T337]  ? new_sync_read (./include/linux/ioprio.h:41)
[   27.837456][  T337]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   27.837461][  T337]  ? __fget_files (./include/linux/rcupdate.h:882 fs/file.c:1100)
[   27.837465][  T337]  vfs_write (fs/read_write.c:687)
[   27.837469][  T337]  ksys_write (fs/read_write.c:739)
[   27.837472][  T337]  ? __ia32_sys_read (fs/read_write.c:723)
[   27.837475][  T337]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   27.837478][  T337]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   27.837481][  T337]  ? irq_exit_rcu (kernel/softirq.c:786)
[   27.837484][  T337]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   27.837486][  T337] RIP: 0033:0x7f5532734312
[   27.837491][  T337] 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)
[   27.837493][  T337] RSP: 002b:00007ffd407cc148 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   27.837497][  T337] RAX: ffffffffffffffda RBX: 0000000000000316 RCX: 00007f5532734312
[   27.837498][  T337] RDX: 0000000000000316 RSI: 0000556863ce12b0 RDI: 000000000000000b
[   27.837500][  T337] RBP: 00007ffd407cc170 R08: 0000000000000000 R09: 0000000000000000
[   27.837501][  T337] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f55325a1390
[   27.837501][  T337] R13: 0000556863ce12b0 R14: 000000000000000b R15: 00007f553252d0d0
| [   28.842253][  T337] softirqs last disabled at (440724): __alloc_skb (./include/linux/bottom_half.h:20 (discriminator 2) net/core/skbuff.c:697 (discriminator 2))
| [   28.842255][  T337] Preemption disabled at:
| [   28.842256][  T337] vprintk_emit (kernel/printk/printk.c:2471)
| [   28.842266][  T337] Tainted: [W]=WARN
[   28.842267][  T337] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   28.842269][  T337] Call Trace:
[   28.842271][  T337]  <TASK>
[   28.842273][  T337]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   28.842279][  T337]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   28.842282][  T337]  __might_resched.cold (kernel/sched/core.c:9234)
[   28.842286][  T337]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   28.842291][  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)
[   28.842296][  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))
[   28.842299][  T337]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   28.842306][  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)
[   28.842309][  T337]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   28.842312][  T337]  put_chars (drivers/char/virtio_console.c:1176)
[   28.842316][  T337]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   28.842318][  T337]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   28.842323][  T337]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   28.842325][  T337]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   28.842330][  T337]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   28.842333][  T337]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   28.842339][  T337]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   28.842342][  T337]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   28.842348][  T337]  console_emit_next_record (kernel/printk/printk.c:3183)
[   28.842353][  T337]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   28.842359][  T337]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   28.842362][  T337]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   28.842366][  T337]  console_flush_one_record (kernel/printk/printk.c:3268)
[   28.842371][  T337]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   28.842372][  T337]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   28.842378][  T337]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   28.842381][  T337]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   28.842383][  T337]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   28.842385][  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))
[   28.842390][  T337]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   28.842391][  T337]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   28.842395][  T337]  vprintk_emit (kernel/printk/printk.c:2479)
[   28.842399][  T337]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   28.842402][  T337]  ? rcu_gp_is_expedited (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:32 kernel/rcu/update.c:196)
[   28.842404][  T337]  ? synchronize_rcu (kernel/rcu/tree.c:3410)
[   28.842408][  T337]  _printk (kernel/printk/printk.c:2504)
[   28.842412][  T337]  ? snapshot_read.cold (user.c:?)
[   28.842413][  T337]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   28.842418][  T337]  ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:470 (discriminator 2) kernel/locking/lockdep.c:4427 (discriminator 2))
[   28.842419][  T337]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4488)
[   28.842424][  T337]  ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:211 (discriminator 1) kernel/locking/spinlock.c:221 (discriminator 1))
[   28.842427][  T337]  ? __free_object (./include/linux/irqflags.h:266 (discriminator 6) lib/debugobjects.c:536 (discriminator 6))
[   28.842432][  T337] enabled_store.cold (drivers/net/netconsole.c:1071 (discriminator 1)) netconsole
[   28.842435][  T337]  ? __kasan_kmalloc (mm/kasan/common.c:398 mm/kasan/common.c:415)
[   28.842439][  T337]  ? netconsole_write_ext (drivers/net/netconsole.c:2504) netconsole
[   28.842441][  T337]  ? down_write_killable_nested (./arch/x86/include/asm/atomic64_64.h:20)
[   28.842444][  T337]  ? __kmalloc_cache_noprof (mm/slub.c:5561 (discriminator 1))
[   28.842446][  T337]  ? configfs_write_iter (./include/linux/slab.h:991 (discriminator 1) fs/configfs/file.c:187 (discriminator 1) fs/configfs/file.c:227 (discriminator 1))
[   28.842450][  T337]  ? netconsole_write_ext (drivers/net/netconsole.c:2504) netconsole
[   28.842452][  T337]  configfs_write_iter (fs/configfs/file.c:207 fs/configfs/file.c:229)
[   28.842455][  T337]  ? configfs_bin_write_iter (fs/configfs/file.c:287 (discriminator 1))
[   28.842458][  T337]  new_sync_write (fs/read_write.c:595)
[   28.842461][  T337]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   28.842464][  T337]  ? new_sync_read (./include/linux/ioprio.h:41)
[   28.842468][  T337]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   28.842470][  T337]  ? ksys_write (fs/read_write.c:739)
[   28.842477][  T337]  vfs_write (fs/read_write.c:687)
[   28.842481][  T337]  ksys_write (fs/read_write.c:739)
[   28.842484][  T337]  ? __ia32_sys_read (fs/read_write.c:723)
[   28.842486][  T337]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   28.842488][  T337]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   28.842492][  T337]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   28.842494][  T337]  ? irq_exit_rcu (kernel/softirq.c:786)
[   28.842498][  T337]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   28.842501][  T337] RIP: 0033:0x7f5532734312
[   28.842505][  T337] 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)
[   28.842507][  T337] RSP: 002b:00007ffd407cc148 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   28.842510][  T337] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f5532734312
[   28.842512][  T337] RDX: 0000000000000001 RSI: 0000556863ce12b0 RDI: 000000000000000b
[   28.842513][  T337] RBP: 00007ffd407cc170 R08: 0000000000000000 R09: 0000000000000000
[   28.842514][  T337] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f55325a1390
[   28.842515][  T337] R13: 0000556863ce12b0 R14: 000000000000000b R15: 00007f553252d0d0
| [   30.233717][  T337] softirqs last disabled at (466285): __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767)
| [   30.233719][  T337] Preemption disabled at:
| [   30.233720][  T337] vprintk_emit (kernel/printk/printk.c:2471)
| [   30.233730][  T337] Tainted: [W]=WARN
[   30.233731][  T337] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   30.233733][  T337] Call Trace:
[   30.233735][  T337]  <TASK>
[   30.233737][  T337]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   30.233743][  T337]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   30.233745][  T337]  __might_resched.cold (kernel/sched/core.c:9234)
[   30.233750][  T337]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   30.233754][  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)
[   30.233759][  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))
[   30.233762][  T337]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   30.233768][  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)
[   30.233771][  T337]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   30.233775][  T337]  put_chars (drivers/char/virtio_console.c:1176)
[   30.233778][  T337]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   30.233781][  T337]  ? printk_get_next_message (kernel/printk/printk.c:3072)
[   30.233784][  T337]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   30.233787][  T337]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   30.233791][  T337]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   30.233795][  T337]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   30.233797][  T337]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   30.233801][  T337]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   30.233805][  T337]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   30.233808][  T337]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   30.233812][  T337]  console_emit_next_record (kernel/printk/printk.c:3183)
[   30.233816][  T337]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   30.233821][  T337]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   30.233823][  T337]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   30.233827][  T337]  console_flush_one_record (kernel/printk/printk.c:3268)
[   30.233831][  T337]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   30.233833][  T337]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   30.233838][  T337]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   30.233841][  T337]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   30.233843][  T337]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   30.233846][  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))
[   30.233849][  T337]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   30.233851][  T337]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   30.233854][  T337]  vprintk_emit (kernel/printk/printk.c:2479)
[   30.233858][  T337]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   30.233861][  T337]  ? _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)
[   30.233870][  T337]  devkmsg_emit.constprop.0 (kernel/printk/printk.c:733)
[   30.233874][  T337]  ? vprintk_emit.cold (kernel/printk/printk.c:2449)
[   30.233878][  T337]  ? __kmalloc_noprof (mm/slub.c:5415 mm/slub.c:5439)
[   30.233881][  T337]  ? idr_get_free (??:?)
[   30.233884][  T337]  ? devkmsg_write (./include/linux/slab.h:995 kernel/printk/printk.c:762)
[   30.233887][  T337]  ? _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)
[   30.233890][  T337]  devkmsg_write.cold (kernel/printk/printk.c:796)
[   30.233893][  T337]  ? vprintk_default (kernel/printk/printk.c:2494)
[   30.233897][  T337]  ? vprintk_default (kernel/printk/printk.c:2494)
[   30.233900][  T337]  new_sync_write (fs/read_write.c:595)
[   30.233906][  T337]  ? new_sync_read (./include/linux/ioprio.h:41)
[   30.233910][  T337]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   30.233915][  T337]  ? __fget_files (./include/linux/rcupdate.h:882 fs/file.c:1100)
[   30.233919][  T337]  vfs_write (fs/read_write.c:687)
[   30.233923][  T337]  ksys_write (fs/read_write.c:739)
[   30.233926][  T337]  ? __ia32_sys_read (fs/read_write.c:723)
[   30.233929][  T337]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   30.233933][  T337]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   30.233936][  T337]  ? irq_exit_rcu (kernel/softirq.c:786)
[   30.233938][  T337]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   30.233941][  T337] RIP: 0033:0x7f5532734312
[   30.233945][  T337] 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)
[   30.233947][  T337] RSP: 002b:00007ffd407cc148 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   30.233950][  T337] RAX: ffffffffffffffda RBX: 0000000000000316 RCX: 00007f5532734312
[   30.233952][  T337] RDX: 0000000000000316 RSI: 0000556863ce12b0 RDI: 000000000000000b
[   30.233953][  T337] RBP: 00007ffd407cc170 R08: 0000000000000000 R09: 0000000000000000
[   30.233954][  T337] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f55325a1390
[   30.233955][  T337] R13: 0000556863ce12b0 R14: 000000000000000b R15: 00007f553252d0d0
| [   31.232944][  T337] softirqs last disabled at (488609): __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767)
| [   31.232946][  T337] Preemption disabled at:
| [   31.232947][  T337] vprintk_emit (kernel/printk/printk.c:2471)
| [   31.232957][  T337] Tainted: [W]=WARN
[   31.232958][  T337] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   31.232960][  T337] Call Trace:
[   31.232962][  T337]  <TASK>
[   31.232963][  T337]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   31.232969][  T337]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   31.232972][  T337]  __might_resched.cold (kernel/sched/core.c:9234)
[   31.232976][  T337]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   31.232981][  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)
[   31.232986][  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))
[   31.232988][  T337]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   31.232995][  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)
[   31.232998][  T337]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   31.233001][  T337]  put_chars (drivers/char/virtio_console.c:1176)
[   31.233004][  T337]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   31.233006][  T337]  ? printk_get_next_message (kernel/printk/printk.c:3072)
[   31.233010][  T337]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   31.233013][  T337]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   31.233017][  T337]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   31.233020][  T337]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   31.233022][  T337]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   31.233026][  T337]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   31.233030][  T337]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   31.233033][  T337]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   31.233037][  T337]  console_emit_next_record (kernel/printk/printk.c:3183)
[   31.233040][  T337]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   31.233044][  T337]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   31.233047][  T337]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   31.233051][  T337]  console_flush_one_record (kernel/printk/printk.c:3268)
[   31.233055][  T337]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   31.233057][  T337]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   31.233062][  T337]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   31.233064][  T337]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   31.233066][  T337]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   31.233069][  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))
[   31.233072][  T337]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   31.233074][  T337]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   31.233077][  T337]  vprintk_emit (kernel/printk/printk.c:2479)
[   31.233081][  T337]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   31.233084][  T337]  ? _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)
[   31.233090][  T337]  devkmsg_emit.constprop.0 (kernel/printk/printk.c:733)
[   31.233093][  T337]  ? vprintk_emit.cold (kernel/printk/printk.c:2449)
[   31.233097][  T337]  ? __kmalloc_noprof (mm/slub.c:5415 mm/slub.c:5439)
[   31.233099][  T337]  ? idr_get_free (??:?)
[   31.233103][  T337]  ? devkmsg_write (./include/linux/slab.h:995 kernel/printk/printk.c:762)
[   31.233106][  T337]  ? _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)
[   31.233108][  T337]  devkmsg_write.cold (kernel/printk/printk.c:796)
[   31.233111][  T337]  ? vprintk_default (kernel/printk/printk.c:2494)
[   31.233114][  T337]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   31.233116][  T337]  ? assoc_array_subtree_iterate (lib/assoc_array.c:99)
[   31.233119][  T337]  ? vprintk_default (kernel/printk/printk.c:2494)
[   31.233122][  T337]  new_sync_write (fs/read_write.c:595)
[   31.233126][  T337]  ? static_obj (kernel/locking/lockdep.c:868 (discriminator 1))
[   31.233129][  T337]  ? new_sync_read (./include/linux/ioprio.h:41)
[   31.233133][  T337]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   31.233138][  T337]  ? __fget_files (./include/linux/rcupdate.h:882 fs/file.c:1100)
[   31.233142][  T337]  vfs_write (fs/read_write.c:687)
[   31.233146][  T337]  ksys_write (fs/read_write.c:739)
[   31.233148][  T337]  ? __ia32_sys_read (fs/read_write.c:723)
[   31.233151][  T337]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   31.233155][  T337]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   31.233158][  T337]  ? irq_exit_rcu (kernel/softirq.c:786)
[   31.233160][  T337]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   31.233163][  T337] RIP: 0033:0x7f5532734312
[   31.233167][  T337] 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)
[   31.233169][  T337] RSP: 002b:00007ffd407cc148 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   31.233172][  T337] RAX: ffffffffffffffda RBX: 0000000000000316 RCX: 00007f5532734312
[   31.233174][  T337] RDX: 0000000000000316 RSI: 0000556863ce12b0 RDI: 000000000000000b
[   31.233175][  T337] RBP: 00007ffd407cc170 R08: 0000000000000000 R09: 0000000000000000
[   31.233176][  T337] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f55325a1390


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
__irq_exit_rcu:vprintk_emit:dump_stack_lvl:kmem_cache_alloc_noprof:__alloc_object