======================================
| [   11.383891][  T176] softirqs last disabled at (29903): __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767)
| [   11.383894][  T176] Preemption disabled at:
| [   11.383894][  T176] 0x0
| [   11.383904][  T176] Tainted: [W]=WARN
[   11.383905][  T176] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   11.383907][  T176] Call Trace:
[   11.383909][  T176]  <TASK>
[   11.383910][  T176]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   11.383916][  T176]  __might_resched.cold (kernel/sched/core.c:9234)
[   11.383920][  T176]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   11.383923][  T176]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   11.383928][  T176]  __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))
[   11.383931][  T176]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   11.383937][  T176]  ? 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)
[   11.383940][  T176]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   11.383943][  T176]  put_chars (drivers/char/virtio_console.c:1176)
[   11.383946][  T176]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   11.383952][  T176]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   11.383959][  T176]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   11.383962][  T176]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   11.383967][  T176]  console_emit_next_record (kernel/printk/printk.c:3183)
[   11.383970][  T176]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   11.383971][  T176]  ? 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))
[   11.383974][  T176]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   11.383977][  T176]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   11.383981][  T176]  console_flush_one_record (kernel/printk/printk.c:3268)
[   11.383985][  T176]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   11.383986][  T176]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   11.383991][  T176]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   11.383993][  T176]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   11.383995][  T176]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   11.383997][  T176]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   11.384000][  T176]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   11.384002][  T176]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   11.384005][  T176]  vprintk_emit (kernel/printk/printk.c:2479)
[   11.384008][  T176]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   11.384011][  T176]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   11.384015][  T176]  _printk (kernel/printk/printk.c:2504)
[   11.384018][  T176]  ? snapshot_read.cold (user.c:?)
[   11.384021][  T176]  ? 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)
[   11.384023][  T176]  ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[   11.384027][  T176]  ? 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)
[   11.384030][  T176]  do_exit.cold (kernel/exit.c:889 (discriminator 4) kernel/exit.c:1043 (discriminator 4))
[   11.384034][  T176]  ? exit_notify (kernel/exit.c:780)
[   11.384035][  T176]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   11.384038][  T176]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   11.384042][  T176]  do_group_exit (kernel/exit.c:1151)
[   11.384045][  T176]  __x64_sys_exit_group (kernel/exit.c:1162 kernel/exit.c:1160 kernel/exit.c:1160)
[   11.384047][  T176]  x64_sys_call (./arch/x86/include/generated/asm/syscalls_64.h:232)
[   11.384050][  T176]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   11.384053][  T176]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   11.384056][  T176]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   11.384058][  T176] RIP: 0033:0x7f836d4371b8
[   11.384061][  T176] Code: Unable to access opcode bytes at 0x7f836d43718e.

Code starting with the faulting instruction
===========================================
[   11.384061][  T176] RSP: 002b:00007fff73026aa8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
[   11.384064][  T176] RAX: ffffffffffffffda RBX: 00007f836d567f88 RCX: 00007f836d4371b8
[   11.384065][  T176] RDX: 00007f836d181fc8 RSI: fffffffffffffeb8 RDI: 0000000000000000
[   11.384066][  T176] RBP: 00007fff73026b00 R08: 0000000000000000 R09: 0000000000000050
[   11.384067][  T176] R10: 00007fff730268c0 R11: 0000000000000246 R12: 0000000000000001


Finger prints:
__irq_exit_rcu:dump_stack_lvl:__kmalloc_noprof:put_chars:hvc_console_print