======================================
| [   12.675420][  T258] softirqs last disabled at (44430): sk_common_release (./include/net/sock.h:2138 net/core/sock.c:4066)
| [   12.675422][  T258] Preemption disabled at:
| [   12.675423][  T258] 0x0
| [   12.675433][  T258] Tainted: [W]=WARN
[   12.675434][  T258] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   12.675436][  T258] Call Trace:
[   12.675437][  T258]  <TASK>
[   12.675439][  T258]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   12.675444][  T258]  __might_resched.cold (kernel/sched/core.c:9234)
[   12.675449][  T258]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   12.675452][  T258]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   12.675456][  T258]  __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))
[   12.675459][  T258]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   12.675465][  T258]  ? 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)
[   12.675468][  T258]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   12.675471][  T258]  put_chars (drivers/char/virtio_console.c:1176)
[   12.675474][  T258]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   12.675480][  T258]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   12.675487][  T258]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   12.675489][  T258]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   12.675493][  T258]  console_emit_next_record (kernel/printk/printk.c:3183)
[   12.675497][  T258]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   12.675498][  T258]  ? 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))
[   12.675500][  T258]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   12.675504][  T258]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   12.675508][  T258]  console_flush_one_record (kernel/printk/printk.c:3268)
[   12.675511][  T258]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   12.675512][  T258]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   12.675518][  T258]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   12.675520][  T258]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   12.675521][  T258]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   12.675523][  T258]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   12.675527][  T258]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   12.675529][  T258]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   12.675531][  T258]  vprintk_emit (kernel/printk/printk.c:2479)
[   12.675534][  T258]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   12.675537][  T258]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   12.675541][  T258]  _printk (kernel/printk/printk.c:2504)
[   12.675544][  T258]  ? snapshot_read.cold (user.c:?)
[   12.675547][  T258]  ? 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)
[   12.675549][  T258]  ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[   12.675553][  T258]  ? 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)
[   12.675556][  T258]  do_exit.cold (kernel/exit.c:889 (discriminator 4) kernel/exit.c:1043 (discriminator 4))
[   12.675560][  T258]  ? exit_notify (kernel/exit.c:780)
[   12.675561][  T258]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   12.675564][  T258]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   12.675568][  T258]  do_group_exit (kernel/exit.c:1151)
[   12.675571][  T258]  __x64_sys_exit_group (kernel/exit.c:1162 kernel/exit.c:1160 kernel/exit.c:1160)
[   12.675572][  T258]  x64_sys_call (./arch/x86/include/generated/asm/syscalls_64.h:232)
[   12.675575][  T258]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   12.675578][  T258]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   12.675582][  T258]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   12.675584][  T258] RIP: 0033:0x7ff10d76d1b8
[   12.675586][  T258] Code: Unable to access opcode bytes at 0x7ff10d76d18e.

Code starting with the faulting instruction
===========================================
[   12.675587][  T258] RSP: 002b:00007ffde7049ba8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
[   12.675589][  T258] RAX: ffffffffffffffda RBX: 00007ff10d89df88 RCX: 00007ff10d76d1b8
[   12.675590][  T258] RDX: 00007ff10d4fe7c8 RSI: ffffffffffffffb0 RDI: 0000000000000000
[   12.675591][  T258] RBP: 00007ffde7049c00 R08: 0000000000000000 R09: 0000000000001010
[   12.675592][  T258] R10: 00007ffde7049a20 R11: 0000000000000246 R12: 0000000000000002


Finger prints:
sk_common_release:dump_stack_lvl:__kmalloc_noprof:put_chars:hvc_console_print