======================================
| # [   17.011529][  T158] R13: 0000000000000023 R14: 00005611d6d42ab0 R15: 0000000000000000
| # [   17.011542][  T158]  </TASK>
| # 31b/0x3e0
| # [   17.011193][  T158] Tainted: [W]=WARN
# [   17.011195][  T158] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
# [   17.011197][  T158] Call Trace:
# [   17.011199][  T158]  <TASK>
# [   17.011202][  T158]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
# [   17.011209][  T158]  ? vprintk_emit (kernel/printk/printk.c:2471)
# [   17.011212][  T158]  __might_resched.cold (kernel/sched/core.c:9234)
# [   17.011218][  T158]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
# [   17.011223][  T158]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
# [   17.011231][  T158]  __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))
# [   17.011234][  T158]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
# [   17.011243][  T158]  ? 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)
# [   17.011247][  T158]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
# [   17.011252][  T158]  put_chars (drivers/char/virtio_console.c:1176)
# [   17.011257][  T158]  ? __send_to_port (drivers/char/virtio_console.c:654)
# [   17.011259][  T158]  ? printk_get_next_message (kernel/printk/printk.c:3072)
# [   17.011265][  T158]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
# [   17.011269][  T158]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
# [   17.011277][  T158]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
# [   17.011281][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
# [   17.011283][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
# [   17.011291][  T158]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
# [   17.011297][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
# [   17.011301][  T158]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
# [   17.011308][  T158]  console_emit_next_record (kernel/printk/printk.c:3183)
# [   17.011314][  T158]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
# [   17.011322][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
# [   17.011325][  T158]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
# [   17.011332][  T158]  console_flush_one_record (kernel/printk/printk.c:3268)
# [   17.011382][  T158]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
# [   17.011387][  T158]  ? _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)
# [   17.011396][  T158]  devkmsg_emit.constprop.0 (kernel/printk/printk.c:733)
# [   17.011401][  T158]  ? vprintk_emit.cold (kernel/printk/printk.c:2449)
# [   17.011408][  T158]  ? __kmalloc_noprof (mm/slub.c:5415 mm/slub.c:5439)
# [   17.011411][  T158]  ? idr_get_free (??:?)
# [   17.011416][  T158]  ? devkmsg_write (./include/linux/slab.h:995 kernel/printk/printk.c:762)
# [   17.011421][  T158]  ? _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)
# [   17.011425][  T158]  devkmsg_write.cold (kernel/printk/printk.c:796)
# [   17.011430][  T158]  ? vprintk_default (kernel/printk/printk.c:2494)
# [   17.011432][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
# [   17.011436][  T158]  ? vfs_lock_file (./include/linux/fs.h:1348)
# [   17.011442][  T158]  ? vprintk_default (kernel/printk/printk.c:2494)
# [   17.011446][  T158]  new_sync_write (fs/read_write.c:595)
# [   17.011454][  T158]  ? new_sync_read (./include/linux/ioprio.h:41)
# [   17.011457][  T158]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
# [   17.011471][  T158]  vfs_write (fs/read_write.c:687)
# [   17.011479][  T158]  ksys_write (fs/read_write.c:739)
# [   17.011483][  T158]  ? __ia32_sys_read (fs/read_write.c:723)
# [   17.011486][  T158]  ? 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)
# [   17.011491][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
not ok 1 selftests: drivers/net/netconsole: netcons_basic.sh # exit=1
make: Leaving directory '/srv/vmksft/testing/wt-14/tools/testing/selftests'
| [   10.046847][  T170] softirqs last disabled at (32463): __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767)
| [   10.046850][  T170] Preemption disabled at:
| [   10.046851][  T170] vprintk_emit (kernel/printk/printk.c:2471)
| [   10.046861][  T170] Tainted: [W]=WARN
[   10.046862][  T170] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   10.046863][  T170] Call Trace:
[   10.046865][  T170]  <TASK>
[   10.046867][  T170]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   10.046872][  T170]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   10.046874][  T170]  __might_resched.cold (kernel/sched/core.c:9234)
[   10.046879][  T170]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   10.046882][  T170]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   10.046887][  T170]  __kmalloc_noprof (./include/linux/sched/mm.h:322 (discriminator 2) mm/slub.c:4636 (discriminator 2) mm/slub.c:4974 (discriminator 2) mm/slub.c:5413 (discriminator 2) mm/slub.c:5439 (discriminator 2))
[   10.046889][  T170]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   10.046895][  T170]  ? do_raw_spin_unlock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:32 ./include/asm-generic/qspinlock.h:58 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141)
[   10.046897][  T170]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   10.046900][  T170]  put_chars (drivers/char/virtio_console.c:1176)
[   10.046903][  T170]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   10.046906][  T170]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   10.046911][  T170]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   10.046917][  T170]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   10.046919][  T170]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   10.046923][  T170]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   10.046927][  T170]  console_emit_next_record (kernel/printk/printk.c:3183)
[   10.046930][  T170]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   10.046934][  T170]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   10.046936][  T170]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   10.046940][  T170]  console_flush_one_record (kernel/printk/printk.c:3268)
[   10.046944][  T170]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   10.046945][  T170]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   10.046950][  T170]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   10.046953][  T170]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   10.046954][  T170]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   10.046956][  T170]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   10.046960][  T170]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   10.046961][  T170]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   10.046964][  T170]  vprintk_emit (kernel/printk/printk.c:2479)
[   10.046968][  T170]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   10.046969][  T170]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   10.046973][  T170]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   10.046975][  T170]  ? fast_dput (./include/linux/rcupdate.h:319 (discriminator 2) ./include/linux/rcupdate.h:880 (discriminator 2) fs/dcache.c:948 (discriminator 2))
[   10.046984][  T170]  ? 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
[   10.046988][  T170]  _printk (kernel/printk/printk.c:2504)
[   10.046992][  T170]  ? snapshot_read.cold (user.c:?)
[   10.046995][  T170]  ? __up_write (kernel/locking/rwsem.c:1422 (discriminator 1))
[   10.046998][  T170]  ? 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
[   10.047002][  T170]  ? 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)
[   10.047007][  T170] init_netconsole (drivers/net/netconsole.c:1286) netconsole
[   10.047010][  T170]  ? 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
[   10.047017][  T170]  ? 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
[   10.047020][  T170]  do_one_initcall (init/main.c:1357)
[   10.047024][  T170]  ? trace_event_raw_event_initcall_level (./include/trace/events/initcall.h:10)
[   10.047029][  T170]  ? do_init_module (./include/linux/slab.h:991 (discriminator 1) kernel/module/main.c:3105 (discriminator 1))
[   10.047031][  T170]  ? kasan_unpoison (mm/kasan/shadow.c:146 mm/kasan/shadow.c:178)
[   10.047037][  T170]  do_init_module (kernel/module/main.c:3117)
[   10.047040][  T170]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4488)
[   10.047044][  T170]  ? free_module (./include/trace/events/module.h:50 (discriminator 19))
[   10.047047][  T170]  ? kfree (./include/linux/kasan.h:235 mm/slub.c:2748 mm/slub.c:6499 mm/slub.c:6792)
[   10.047051][  T170]  load_module (kernel/module/main.c:3593)
[   10.047058][  T170]  ? layout_and_allocate.isra.0 (kernel/module/main.c:3016)
[   10.047061][  T170]  ? __ia32_sys_fsconfig (??:?)
[   10.047065][  T170]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   10.047068][  T170]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   10.047072][  T170]  init_module_from_file (kernel/module/main.c:3790)
[   10.047075][  T170]  ? __do_sys_init_module (kernel/module/main.c:3664)
[   10.047083][  T170]  ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[   10.047086][  T170]  ? do_raw_spin_unlock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:32 ./include/asm-generic/qspinlock.h:58 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141)
[   10.047089][  T170]  idempotent_init_module (kernel/module/main.c:3802)
[   10.047092][  T170]  ? init_module_from_file (kernel/module/main.c:3791)
[   10.047098][  T170]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   10.047100][  T170]  ? cap_capable (./include/trace/events/capability.h:26 (discriminator 22) security/commoncap.c:130 (discriminator 22))
[   10.047106][  T170]  __x64_sys_finit_module (kernel/module/main.c:3828 kernel/module/main.c:3812 kernel/module/main.c:3812)
[   10.047108][  T170]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[   10.047113][  T170]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   10.047115][  T170]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   10.047117][  T170]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   10.047120][  T170] RIP: 0033:0x7f177680837d
[   10.047123][  T170] Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 4b aa 0f 00 f7 d8 64 89 01 48
All code
========
   0:	ff c3                	inc    %ebx
   2:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
   9:	00 00 00 
   c:	90                   	nop
   d:	f3 0f 1e fa          	endbr64
  11:	48 89 f8             	mov    %rdi,%rax
  14:	48 89 f7             	mov    %rsi,%rdi
  17:	48 89 d6             	mov    %rdx,%rsi
  1a:	48 89 ca             	mov    %rcx,%rdx
  1d:	4d 89 c2             	mov    %r8,%r10
  20:	4d 89 c8             	mov    %r9,%r8
  23:	4c 8b 4c 24 08       	mov    0x8(%rsp),%r9
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 4b aa 0f 00 	mov    0xfaa4b(%rip),%rcx        # 0xfaa85
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 4b aa 0f 00 	mov    0xfaa4b(%rip),%rcx        # 0xfaa5b
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[   10.047125][  T170] RSP: 002b:00007ffe69efa788 EFLAGS: 00000246 ORIG_RAX: 0000000000000139
[   10.047127][  T170] RAX: ffffffffffffffda RBX: 000055cb366c5700 RCX: 00007f177680837d
[   10.047129][  T170] RDX: 0000000000000000 RSI: 000055caf8660ffd RDI: 0000000000000005
[   10.047129][  T170] RBP: 00007ffe69efa820 R08: 0000000000000000 R09: 0000000000000000
[   10.047130][  T170] R10: 0000000000000000 R11: 0000000000000246 R12: 000055caf8660ffd
[   10.047131][  T170] R13: 000055cb366c5810 R14: 0000000000040000 R15: 0000000000000000
| [   13.253219][  T158] softirqs last disabled at (136678): restore_fpregs_from_user (./include/linux/bottom_half.h:20 (discriminator 2) ./arch/x86/include/asm/fpu/api.h:69 (discriminator 2) arch/x86/kernel/fpu/signal.c:277 (discriminator 2))
| [   13.253222][  T158] Preemption disabled at:
| [   13.253223][  T158] vprintk_emit (kernel/printk/printk.c:2471)
| [   13.253232][  T158] Tainted: [W]=WARN
[   13.253233][  T158] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   13.253235][  T158] Call Trace:
[   13.253237][  T158]  <TASK>
[   13.253239][  T158]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   13.253244][  T158]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   13.253246][  T158]  __might_resched.cold (kernel/sched/core.c:9234)
[   13.253251][  T158]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   13.253255][  T158]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   13.253259][  T158]  __kmalloc_noprof (./include/linux/sched/mm.h:322 (discriminator 2) mm/slub.c:4636 (discriminator 2) mm/slub.c:4974 (discriminator 2) mm/slub.c:5413 (discriminator 2) mm/slub.c:5439 (discriminator 2))
[   13.253261][  T158]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   13.253267][  T158]  ? do_raw_spin_unlock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:32 ./include/asm-generic/qspinlock.h:58 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141)
[   13.253270][  T158]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   13.253273][  T158]  put_chars (drivers/char/virtio_console.c:1176)
[   13.253276][  T158]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   13.253277][  T158]  ? printk_get_next_message (kernel/printk/printk.c:3072)
[   13.253280][  T158]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   13.253283][  T158]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   13.253287][  T158]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   13.253290][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   13.253292][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   13.253296][  T158]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   13.253299][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   13.253302][  T158]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   13.253306][  T158]  console_emit_next_record (kernel/printk/printk.c:3183)
[   13.253309][  T158]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   13.253314][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   13.253316][  T158]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   13.253319][  T158]  console_flush_one_record (kernel/printk/printk.c:3268)
[   13.253323][  T158]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   13.253325][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   13.253330][  T158]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   13.253332][  T158]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   13.253334][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   13.253336][  T158]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   13.253340][  T158]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   13.253341][  T158]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   13.253344][  T158]  vprintk_emit (kernel/printk/printk.c:2479)
[   13.253348][  T158]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   13.253351][  T158]  ? _copy_from_iter (./include/linux/instrumented.h:146 lib/iov_iter.c:66 ./include/linux/iov_iter.h:30 ./include/linux/iov_iter.h:302 ./include/linux/iov_iter.h:330 lib/iov_iter.c:261 lib/iov_iter.c:272)
[   13.253357][  T158]  devkmsg_emit.constprop.0 (kernel/printk/printk.c:733)
[   13.253360][  T158]  ? vprintk_emit.cold (kernel/printk/printk.c:2449)
[   13.253364][  T158]  ? __kmalloc_noprof (mm/slub.c:5415 mm/slub.c:5439)
[   13.253366][  T158]  ? idr_get_free (??:?)
[   13.253370][  T158]  ? devkmsg_write (./include/linux/slab.h:995 kernel/printk/printk.c:762)
[   13.253373][  T158]  ? _copy_from_iter (./include/linux/instrumented.h:146 lib/iov_iter.c:66 ./include/linux/iov_iter.h:30 ./include/linux/iov_iter.h:302 ./include/linux/iov_iter.h:330 lib/iov_iter.c:261 lib/iov_iter.c:272)
[   13.253376][  T158]  devkmsg_write.cold (kernel/printk/printk.c:796)
[   13.253378][  T158]  ? vprintk_default (kernel/printk/printk.c:2494)
[   13.253380][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   13.253382][  T158]  ? vfs_lock_file (./include/linux/fs.h:1348)
[   13.253387][  T158]  ? vprintk_default (kernel/printk/printk.c:2494)
[   13.253389][  T158]  new_sync_write (fs/read_write.c:595)
[   13.253394][  T158]  ? new_sync_read (./include/linux/ioprio.h:41)
[   13.253395][  T158]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   13.253403][  T158]  vfs_write (fs/read_write.c:687)
[   13.253407][  T158]  ksys_write (fs/read_write.c:739)
[   13.253410][  T158]  ? __ia32_sys_read (fs/read_write.c:723)
[   13.253412][  T158]  ? do_raw_spin_unlock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:32 ./include/asm-generic/qspinlock.h:58 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141)
[   13.253415][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   13.253418][  T158]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   13.253420][  T158]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   13.253423][  T158]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   13.253426][  T158] RIP: 0033:0x7f097b07554e
[   13.253430][  T158] Code: 4d 89 d8 e8 b4 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 03 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 b4 bd 00 00       	call   0xbdbc
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 03 ff ff ff       	call   0xffffffffffffff3c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 03 ff ff ff       	call   0xffffffffffffff12
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[   13.253432][  T158] RSP: 002b:00007ffc09a46cf0 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[   13.253435][  T158] RAX: ffffffffffffffda RBX: 00007f097b1f6580 RCX: 00007f097b07554e
[   13.253436][  T158] RDX: 0000000000000023 RSI: 00005611d6d42ab0 RDI: 0000000000000001
[   13.253437][  T158] RBP: 00007ffc09a46d00 R08: 0000000000000000 R09: 0000000000000000
[   13.253438][  T158] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000023
[   13.253439][  T158] R13: 0000000000000023 R14: 00005611d6d42ab0 R15: 0000000000000000
| [   17.011174][  T158] softirqs last disabled at (272671): __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767)
| [   17.011179][  T158] Preemption disabled at:
| [   17.011180][  T158] vprintk_emit (kernel/printk/printk.c:2471)
| [   17.011193][  T158] Tainted: [W]=WARN
[   17.011195][  T158] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   17.011197][  T158] Call Trace:
[   17.011199][  T158]  <TASK>
[   17.011202][  T158]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   17.011209][  T158]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   17.011212][  T158]  __might_resched.cold (kernel/sched/core.c:9234)
[   17.011218][  T158]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   17.011223][  T158]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   17.011231][  T158]  __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))
[   17.011234][  T158]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   17.011243][  T158]  ? 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)
[   17.011247][  T158]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   17.011252][  T158]  put_chars (drivers/char/virtio_console.c:1176)
[   17.011257][  T158]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   17.011259][  T158]  ? printk_get_next_message (kernel/printk/printk.c:3072)
[   17.011265][  T158]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   17.011269][  T158]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   17.011277][  T158]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   17.011281][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   17.011283][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   17.011291][  T158]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   17.011297][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   17.011301][  T158]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   17.011308][  T158]  console_emit_next_record (kernel/printk/printk.c:3183)
[   17.011314][  T158]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   17.011322][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   17.011325][  T158]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   17.011332][  T158]  console_flush_one_record (kernel/printk/printk.c:3268)
[   17.011339][  T158]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   17.011342][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   17.011351][  T158]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   17.011356][  T158]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   17.011358][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   17.011362][  T158]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   17.011368][  T158]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   17.011371][  T158]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   17.011376][  T158]  vprintk_emit (kernel/printk/printk.c:2479)
[   17.011382][  T158]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   17.011387][  T158]  ? _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)
[   17.011396][  T158]  devkmsg_emit.constprop.0 (kernel/printk/printk.c:733)
[   17.011401][  T158]  ? vprintk_emit.cold (kernel/printk/printk.c:2449)
[   17.011408][  T158]  ? __kmalloc_noprof (mm/slub.c:5415 mm/slub.c:5439)
[   17.011411][  T158]  ? idr_get_free (??:?)
[   17.011416][  T158]  ? devkmsg_write (./include/linux/slab.h:995 kernel/printk/printk.c:762)
[   17.011421][  T158]  ? _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)
[   17.011425][  T158]  devkmsg_write.cold (kernel/printk/printk.c:796)
[   17.011430][  T158]  ? vprintk_default (kernel/printk/printk.c:2494)
[   17.011432][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   17.011436][  T158]  ? vfs_lock_file (./include/linux/fs.h:1348)
[   17.011442][  T158]  ? vprintk_default (kernel/printk/printk.c:2494)
[   17.011446][  T158]  new_sync_write (fs/read_write.c:595)
[   17.011454][  T158]  ? new_sync_read (./include/linux/ioprio.h:41)
[   17.011457][  T158]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   17.011471][  T158]  vfs_write (fs/read_write.c:687)
[   17.011479][  T158]  ksys_write (fs/read_write.c:739)
[   17.011483][  T158]  ? __ia32_sys_read (fs/read_write.c:723)
[   17.011486][  T158]  ? 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)
[   17.011491][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   17.011497][  T158]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   17.011500][  T158]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   17.011505][  T158]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   17.011509][  T158] RIP: 0033:0x7f097b07554e
[   17.011514][  T158] 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
[   17.011517][  T158] RSP: 002b:00007ffc09a46cf0 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[   17.011521][  T158] RAX: ffffffffffffffda RBX: 00007f097b1f6580 RCX: 00007f097b07554e
[   17.011524][  T158] RDX: 0000000000000023 RSI: 00005611d6d42ab0 RDI: 0000000000000001
[   17.011525][  T158] RBP: 00007ffc09a46d00 R08: 0000000000000000 R09: 0000000000000000
[   17.011527][  T158] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000023


Finger prints:
__irq_exit_rcu:vprintk_emit:dump_stack_lvl:__kmalloc_noprof:put_chars
__kmalloc_noprof:put_chars:hvc_console_print:console_emit_next_record:console_flush_one_record
restore_fpregs_from_user:vprintk_emit:dump_stack_lvl:__kmalloc_noprof:put_chars