======================================
| [   22.152039][  T518] softirqs last disabled at (7352596): fpu__clear_user_states (./include/linux/bottom_half.h:20 (discriminator 2) ./arch/x86/include/asm/fpu/api.h:69 (discriminator 2) arch/x86/kernel/fpu/core.c:835 (discriminator 2))
| [   22.152041][  T518] Preemption disabled at:
| [   22.152042][  T518] 0x0
| [   22.152053][  T518] Tainted: [W]=WARN
[   22.152054][  T518] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   22.152056][  T518] Call Trace:
[   22.152058][  T518]  <TASK>
[   22.152059][  T518]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   22.152065][  T518]  __might_resched.cold (kernel/sched/core.c:9234)
[   22.152070][  T518]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   22.152074][  T518]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   22.152079][  T518]  __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))
[   22.152081][  T518]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   22.152087][  T518]  ? 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)
[   22.152090][  T518]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   22.152093][  T518]  put_chars (drivers/char/virtio_console.c:1176)
[   22.152096][  T518]  ? prb_final_commit (kernel/printk/printk_ringbuffer.c:1842)
[   22.152098][  T518]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   22.152101][  T518]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   22.152105][  T518]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   22.152108][  T518]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   22.152111][  T518]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   22.152115][  T518]  ? mark_usage (kernel/locking/lockdep.c:4690)
[   22.152116][  T518]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   22.152118][  T518]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   22.152122][  T518]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   22.152124][  T518]  ? console_emit_next_record (kernel/printk/printk.c:3095 (discriminator 2) kernel/printk/printk.c:3182 (discriminator 2))
[   22.152127][  T518]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   22.152130][  T518]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   22.152134][  T518]  console_emit_next_record (kernel/printk/printk.c:3183)
[   22.152138][  T518]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   22.152140][  T518]  ? console_flush_one_record (./include/linux/rcupdate.h:314 (discriminator 2) ./include/linux/srcu.h:439 (discriminator 2) kernel/printk/printk.c:291 (discriminator 2) kernel/printk/printk.c:3246 (discriminator 2))
[   22.152143][  T518]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   22.152145][  T518]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   22.152149][  T518]  console_flush_one_record (kernel/printk/printk.c:3268)
[   22.152153][  T518]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   22.152155][  T518]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   22.152160][  T518]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   22.152163][  T518]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   22.152165][  T518]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   22.152168][  T518]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   22.152171][  T518]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   22.152173][  T518]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   22.152176][  T518]  vprintk_emit (kernel/printk/printk.c:2479)
[   22.152180][  T518]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   22.152184][  T518]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   22.152187][  T518]  _printk (kernel/printk/printk.c:2504)
[   22.152191][  T518]  ? snapshot_read.cold (user.c:?)
[   22.152194][  T518]  ? do_raw_spin_lock (./include/linux/instrumented.h:55 ./include/linux/atomic/atomic-instrumented.h:1301 ./include/asm-generic/qspinlock.h:112 kernel/locking/spinlock_debug.c:116)
[   22.152196][  T518]  ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[   22.152200][  T518]  ? do_raw_spin_lock (./include/linux/instrumented.h:55 ./include/linux/atomic/atomic-instrumented.h:1301 ./include/asm-generic/qspinlock.h:112 kernel/locking/spinlock_debug.c:116)
[   22.152203][  T518]  do_exit.cold (kernel/exit.c:889 (discriminator 4) kernel/exit.c:1043 (discriminator 4))
[   22.152207][  T518]  ? exit_notify (kernel/exit.c:780)
[   22.152212][  T518]  __x64_sys_exit (kernel/exit.c:1118 kernel/exit.c:1116 kernel/exit.c:1116)
[   22.152214][  T518]  x64_sys_call (./arch/x86/include/generated/asm/syscalls_64.h:61)
[   22.152216][  T518]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   22.152220][  T518]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   22.152223][  T518]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   22.152225][  T518] RIP: 0033:0x7f6eeec07c49
[   22.152228][  T518] Code: Unable to access opcode bytes at 0x7f6eeec07c1f.

Code starting with the faulting instruction
===========================================
[   22.152229][  T518] RSP: 002b:00007f6eee3c6e60 EFLAGS: 00000246 ORIG_RAX: 000000000000003c
[   22.152231][  T518] RAX: ffffffffffffffda RBX: 00007f6eee3c76c0 RCX: 00007f6eeec07c49
[   22.152233][  T518] RDX: 0000000000000000 RSI: 0000000000801000 RDI: 0000000000000000
[   22.152233][  T518] RBP: 00007f6eee3c6f70 R08: 0000000000000001 R09: 00007f6eee3c76c0
[   22.152234][  T518] R10: 0000000000000008 R11: 0000000000000246 R12: 00007f6eedbc7000


Finger prints:
fpu__clear_user_states:dump_stack_lvl:__kmalloc_noprof:put_chars:hvc_console_print