======================================
| 0
| xx__-> [   30.876208][  T258] ip (258) used greatest stack depth: 24080 bytes left
| [   41.452800][    C0] BUG: spinlock bad magic on CPU#0, swapper/0/0
| [ 41.453056][ C0] lock: noop_qdisc+0x240/0x300, .magic: 00000000, .owner: swapper/0/0, .owner_cpu: 0 
[   41.453655][    C0] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   41.454037][    C0] Call Trace:
[   41.454180][    C0]  <IRQ>
[ 41.454272][ C0] dump_stack_lvl (lib/dump_stack.c:122) 
[ 41.454451][ C0] do_raw_spin_unlock (kernel/locking/spinlock_debug.c:100 kernel/locking/spinlock_debug.c:141) 
[ 41.454631][ C0] _raw_spin_unlock (./arch/x86/include/asm/preempt.h:94 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 41.454805][ C0] __dev_xmit_skb (./include/net/sch_generic.h:226 ./include/net/sch_generic.h:217 net/core/dev.c:3879) 
[ 41.454974][ C0] ? __pfx___dev_xmit_skb (net/core/dev.c:3784) 
[ 41.455157][ C0] ? __dev_queue_xmit (./include/linux/bottom_half.h:20 ./include/linux/rcupdate.h:890 net/core/dev.c:4348) 
[ 41.455344][ C0] ? lock_acquire (kernel/locking/lockdep.c:5732) 
[ 41.455521][ C0] ? __dev_queue_xmit (./include/linux/bottom_half.h:20 ./include/linux/rcupdate.h:890 net/core/dev.c:4348) 
[ 41.455705][ C0] __dev_queue_xmit (net/core/dev.c:4389) 
[ 41.455875][ C0] ? __lock_release (kernel/locking/lockdep.c:5435) 
[ 41.456034][ C0] ? ip6_finish_output2 (./include/net/neighbour.h:542 net/ipv6/ip6_output.c:137) 
[ 41.456216][ C0] ? __pfx___lock_release (kernel/locking/lockdep.c:5411) 
[ 41.456385][ C0] ? __pfx___dev_queue_xmit (net/core/dev.c:4332) 
[ 41.456551][ C0] ? mark_held_locks (kernel/locking/lockdep.c:4273) 
[ 41.456718][ C0] ? eth_header (net/ethernet/eth.c:100) 
[ 41.456899][ C0] ? neigh_resolve_output (./include/linux/netdevice.h:3159 net/core/neighbour.c:1560 net/core/neighbour.c:1545) 
[ 41.457081][ C0] ip6_finish_output2 (./include/net/neighbour.h:542 net/ipv6/ip6_output.c:137) 
[ 41.457254][ C0] ip6_finish_output (net/ipv6/ip6_output.c:211 net/ipv6/ip6_output.c:222) 
[ 41.457429][ C0] ? ip6_local_out (net/ipv6/output_core.c:154) 
[ 41.457591][ C0] ip6_send_skb (net/ipv6/ip6_output.c:1960) 
[ 41.457762][ C0] icmp6_send (net/ipv6/icmp.c:624) 
[ 41.457946][ C0] ? __pfx_icmp6_send (net/ipv6/icmp.c:448) 
[ 41.458119][ C0] ? __pfx_validate_chain (kernel/locking/lockdep.c:3824) 
[ 41.458285][ C0] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:227) 
[ 41.458465][ C0] ? __pfx___lock_release (kernel/locking/lockdep.c:5411) 
[ 41.458633][ C0] ? lock_acquire.part.0 (kernel/locking/lockdep.c:466 kernel/locking/lockdep.c:5761) 
[ 41.458798][ C0] ? ip6_link_failure (./include/linux/skbuff.h:1141 net/ipv6/route.c:2801) 
[ 41.458961][ C0] ip6_link_failure (./include/linux/skbuff.h:1141 net/ipv6/route.c:2801) 
[ 41.459126][ C0] ndisc_error_report (./include/net/dst.h:429 net/ipv6/ndisc.c:731) 
[ 41.459295][ C0] neigh_invalidate (net/core/neighbour.c:1061) 
[ 41.459465][ C0] neigh_timer_handler (net/core/neighbour.c:1162 (discriminator 2)) 
[ 41.459631][ C0] ? __pfx_neigh_timer_handler (net/core/neighbour.c:1085) 
[ 41.459799][ C0] call_timer_fn (kernel/time/timer.c:1792) 
[ 41.459965][ C0] ? call_timer_fn (./include/linux/lockdep.h:31 kernel/time/timer.c:1782) 
[ 41.460128][ C0] ? call_timer_fn (./include/linux/lockdep.h:31 kernel/time/timer.c:1782) 
[ 41.460287][ C0] ? __pfx_call_timer_fn (kernel/time/timer.c:1769) 
[ 41.460564][ C0] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 41.460691][ C0] __run_timers (kernel/time/timer.c:1844 kernel/time/timer.c:2417) 
[ 41.460853][ C0] ? __pfx_neigh_timer_handler (net/core/neighbour.c:1085) 
[ 41.461019][ C0] ? __pfx___run_timers (kernel/time/timer.c:2388) 
[ 41.461185][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 41.461362][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 41.461534][ C0] ? lock_acquire (kernel/locking/lockdep.c:5732) 
[ 41.461702][ C0] ? run_timer_softirq (kernel/time/timer.c:2428 kernel/time/timer.c:2421 kernel/time/timer.c:2437 kernel/time/timer.c:2447) 
[ 41.461872][ C0] run_timer_softirq (kernel/time/timer.c:2429 kernel/time/timer.c:2421 kernel/time/timer.c:2437 kernel/time/timer.c:2447) 
[ 41.462041][ C0] handle_softirqs (kernel/softirq.c:554) 
[ 41.462210][ C0] irq_exit_rcu (kernel/softirq.c:589 kernel/softirq.c:428 kernel/softirq.c:637 kernel/softirq.c:649) 
[ 41.462339][ C0] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1043 arch/x86/kernel/apic/apic.c:1043) 
[   41.462534][    C0]  </IRQ>
[   41.462619][    C0]  <TASK>
[ 41.462706][ C0] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 41.462918][ C0] RIP: 0010:default_idle (./arch/x86/include/asm/irqflags.h:37 ./arch/x86/include/asm/irqflags.h:92 arch/x86/kernel/process.c:743) 
[ 41.463094][ C0] Code: 4c 01 c7 4c 29 c2 e9 72 ff ff ff 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 66 90 0f 00 2d e3 e9 46 00 fb f4 <fa> c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90
All code
========
   0:	4c 01 c7             	add    %r8,%rdi
   3:	4c 29 c2             	sub    %r8,%rdx
   6:	e9 72 ff ff ff       	jmp    0xffffffffffffff7d
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	90                   	nop
  10:	90                   	nop
  11:	90                   	nop
  12:	90                   	nop
  13:	90                   	nop
  14:	90                   	nop
  15:	90                   	nop
  16:	90                   	nop
  17:	90                   	nop
  18:	90                   	nop
  19:	90                   	nop
  1a:	90                   	nop
  1b:	f3 0f 1e fa          	endbr64
  1f:	66 90                	xchg   %ax,%ax
  21:	0f 00 2d e3 e9 46 00 	verw   0x46e9e3(%rip)        # 0x46ea0b
  28:	fb                   	sti
  29:	f4                   	hlt
  2a:*	fa                   	cli		<-- trapping instruction
  2b:	c3                   	ret
  2c:	cc                   	int3
  2d:	cc                   	int3
  2e:	cc                   	int3
  2f:	cc                   	int3
  30:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
  37:	00 00 00 00 
  3b:	90                   	nop
  3c:	90                   	nop
  3d:	90                   	nop
  3e:	90                   	nop
  3f:	90                   	nop

Code starting with the faulting instruction
===========================================
   0:	fa                   	cli
   1:	c3                   	ret
   2:	cc                   	int3
   3:	cc                   	int3
   4:	cc                   	int3
   5:	cc                   	int3
   6:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
   d:	00 00 00 00 
  11:	90                   	nop
  12:	90                   	nop
  13:	90                   	nop
  14:	90                   	nop
  15:	90                   	nop
[   41.463692][    C0] RSP: 0018:ffffffffa4a07e00 EFLAGS: 00000242
[   41.463914][    C0] RAX: 00000000000c3651 RBX: 1ffffffff4940fc2 RCX: ffffffffa39f2795
[   41.464181][    C0] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffffa12a6984
[   41.464436][    C0] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1006c070a0
[   41.464692][    C0] R10: ffff888036038503 R11: ffff88803603dd00 R12: 0000000000000000
[   41.464952][    C0] R13: ffffffffa4a1d080 R14: dffffc0000000000 R15: 0000000000014770
[ 41.465209][ C0] ? ct_kernel_exit.constprop.0 (kernel/context_tracking.c:147) 
[ 41.465376][ C0] ? cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 41.465549][ C0] default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 41.465719][ C0] cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 41.465892][ C0] ? __pfx_cpuidle_idle_call (kernel/sched/idle.c:168) 
[ 41.466066][ C0] ? tsc_verify_tsc_adjust (arch/x86/kernel/tsc_sync.c:59) 
[ 41.466235][ C0] do_idle (kernel/sched/idle.c:326) 
[ 41.466365][ C0] cpu_startup_entry (kernel/sched/idle.c:423 (discriminator 1)) 
[ 41.466530][ C0] rest_init (./include/linux/rcupdate.h:839 init/main.c:718) 
[ 41.466658][ C0] start_kernel (init/main.c:1053 (discriminator 1)) 
[ 41.466835][ C0] x86_64_start_reservations (arch/x86/kernel/head64.c:495) 
[ 41.467008][ C0] x86_64_start_kernel (arch/x86/kernel/head64.c:437 (discriminator 17)) 


Finger prints:
do_raw_spin_unlock:_raw_spin_unlock:__dev_xmit_skb:__dev_queue_xmit:ip6_finish_output2