======================================
| [   11.171210][  T166] softirqs last disabled at (302284): lock_sock_nested (./include/linux/spinlock.h:353 net/core/sock.c:3848)
| [   11.171214][  T166] Preemption disabled at:
| [   11.171215][  T166] vprintk_emit (kernel/printk/printk.c:2471)
| [   11.171224][  T166] Tainted: [W]=WARN
[   11.171225][  T166] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   11.171227][  T166] Call Trace:
[   11.171228][  T166]  <TASK>
[   11.171230][  T166]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   11.171235][  T166]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   11.171238][  T166]  __might_resched.cold (kernel/sched/core.c:9234)
[   11.171242][  T166]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   11.171246][  T166]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   11.171251][  T166]  __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))
[   11.171253][  T166]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   11.171259][  T166]  ? 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)
[   11.171262][  T166]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   11.171265][  T166]  put_chars (drivers/char/virtio_console.c:1176)
[   11.171267][  T166]  ? check_prev_add (kernel/locking/lockdep.c:3258 (discriminator 3))
[   11.171269][  T166]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   11.171273][  T166]  ? validate_chain (kernel/locking/lockdep.c:159 kernel/locking/lockdep.c:191 kernel/locking/lockdep.c:3928)
[   11.171277][  T166]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   11.171284][  T166]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   11.171286][  T166]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   11.171290][  T166]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   11.171294][  T166]  console_emit_next_record (kernel/printk/printk.c:3183)
[   11.171298][  T166]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   11.171300][  T166]  ? 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))
[   11.171303][  T166]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   11.171305][  T166]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   11.171309][  T166]  console_flush_one_record (kernel/printk/printk.c:3268)
[   11.171313][  T166]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   11.171314][  T166]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   11.171320][  T166]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   11.171322][  T166]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   11.171324][  T166]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   11.171326][  T166]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   11.171330][  T166]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   11.171331][  T166]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   11.171335][  T166]  vprintk_emit (kernel/printk/printk.c:2479)
[   11.171338][  T166]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   11.171341][  T166]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   11.171345][  T166]  _printk (kernel/printk/printk.c:2504)
[   11.171348][  T166]  ? snapshot_read.cold (user.c:?)
[   11.171350][  T166]  ? ___ratelimit (lib/ratelimit.c:97 (discriminator 3))
[   11.171356][  T166]  ? idr_get_free (??:?)
[   11.171360][  T166]  tcp_ao_add_cmd.cold (net/ipv4/tcp_ao.c:1646 (discriminator 3))
[   11.171365][  T166]  ? tcp_ao_cache_traffic_keys.isra.0 (net/ipv4/tcp_ao.c:473 (discriminator 1))
[   11.171368][  T166]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   11.171371][  T166]  ? trace_raw_output_rcu_invoke_kfree_bulk_callback (./include/trace/events/rcu.h:655)
[   11.171374][  T166]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   11.171386][  T166]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   11.171388][  T166]  ? mark_held_locks (kernel/locking/lockdep.c:4341)
[   11.171397][  T166]  do_tcp_setsockopt (net/ipv4/tcp.c:4088)
[   11.171401][  T166]  ? tcp_sock_set_maxseg (net/ipv4/tcp.c:3832)
[   11.171404][  T166]  ? _copy_from_user (./include/linux/instrumented.h:146 ./include/linux/uaccess.h:184 lib/usercopy.c:18)
[   11.171408][  T166]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   11.171411][  T166]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   11.171413][  T166]  ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4407 (discriminator 17))
[   11.171416][  T166]  ? mark_usage (kernel/locking/lockdep.c:4690)
[   11.171418][  T166]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   11.171424][  T166]  do_sock_setsockopt (net/socket.c:2397)
[   11.171427][  T166]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   11.171430][  T166]  ? put_user_ifreq (./arch/x86/include/asm/compat.h:94 (discriminator 1))
[   11.171433][  T166]  ? __fget_files (./include/linux/rcupdate.h:882 fs/file.c:1100)
[   11.171439][  T166]  __sys_setsockopt (net/socket.c:2422)
[   11.171444][  T166]  __x64_sys_setsockopt (net/socket.c:2428 net/socket.c:2425 net/socket.c:2425)
[   11.171446][  T166]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[   11.171449][  T166]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4488)
[   11.171451][  T166]  ? do_syscall_64 (arch/x86/entry/syscall_64.c:81 (discriminator 44))
[   11.171453][  T166]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   11.171455][  T166]  ? irq_exit_rcu (kernel/softirq.c:786)
[   11.171459][  T166]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   11.171461][  T166] RIP: 0033:0x7fcc7e3692de
[   11.171465][  T166] Code: 55 48 63 c9 48 63 ff 45 89 c9 48 89 e5 48 83 ec 08 6a 2c e8 94 72 f7 ff c9 c3 66 90 f3 0f 1e fa 49 89 ca b8 36 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 0a c3 66 0f 1f 84 00 00 00 00 00 48 8b 15 e1
All code
========
   0:	55                   	push   %rbp
   1:	48 63 c9             	movslq %ecx,%rcx
   4:	48 63 ff             	movslq %edi,%rdi
   7:	45 89 c9             	mov    %r9d,%r9d
   a:	48 89 e5             	mov    %rsp,%rbp
   d:	48 83 ec 08          	sub    $0x8,%rsp
  11:	6a 2c                	push   $0x2c
  13:	e8 94 72 f7 ff       	call   0xfffffffffff772ac
  18:	c9                   	leave
  19:	c3                   	ret
  1a:	66 90                	xchg   %ax,%ax
  1c:	f3 0f 1e fa          	endbr64
  20:	49 89 ca             	mov    %rcx,%r10
  23:	b8 36 00 00 00       	mov    $0x36,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 0a                	ja     0x3c
  32:	c3                   	ret
  33:	66 0f 1f 84 00 00 00 	nopw   0x0(%rax,%rax,1)
  3a:	00 00 
  3c:	48                   	rex.W
  3d:	8b                   	.byte 0x8b
  3e:	15                   	.byte 0x15
  3f:	e1                   	.byte 0xe1

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 0a                	ja     0x12
   8:	c3                   	ret
   9:	66 0f 1f 84 00 00 00 	nopw   0x0(%rax,%rax,1)
  10:	00 00 
  12:	48                   	rex.W
  13:	8b                   	.byte 0x8b
  14:	15                   	.byte 0x15
  15:	e1                   	.byte 0xe1
[   11.171467][  T166] RSP: 002b:00007fff0ed2d258 EFLAGS: 00000246 ORIG_RAX: 0000000000000036
[   11.171470][  T166] RAX: ffffffffffffffda RBX: 0000000000412632 RCX: 00007fcc7e3692de
[   11.171471][  T166] RDX: 0000000000000026 RSI: 0000000000000006 RDI: 0000000000000009
[   11.171472][  T166] RBP: 0000000000000009 R08: 0000000000000120 R09: 0000000000000000
[   11.171473][  T166] R10: 00007fff0ed2d270 R11: 0000000000000246 R12: 00000000000000c8


Finger prints:
lock_sock_nested:vprintk_emit:dump_stack_lvl:__kmalloc_noprof:put_chars