======================================
|
| WAIT TIMEOUT stdout
| [ 1544.473327][   T69] Oops: general protection fault, probably for non-canonical address 0xdffffc0000000006: 0000 [#1] SMP KASAN
| [ 1544.473536][   T69] KASAN: null-ptr-deref in range [0x0000000000000030-0x0000000000000037]
[ 1544.473807][   T69] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1544.473905][   T69] Workqueue: ipv6_addrconf addrconf_dad_work
[ 1544.474008][   T69] RIP: 0010:mroute6_is_socket (net/ipv6/ip6mr.c:1686 (discriminator 4))
[ 1544.474089][   T69] Code: df 48 89 f9 48 c1 e9 03 80 3c 11 00 75 2f 48 8b 80 e8 10 00 00 48 ba 00 00 00 00 00 fc ff df 48 8d 78 30 48 89 f9 48 c1 e9 03 <80> 3c 11 00 75 1c 48 83 78 30 00 0f 95 c0 48 83 c4 08 c3 48 89 04
All code
========
   0:	df 48 89             	fisttps -0x77(%rax)
   3:	f9                   	stc
   4:	48 c1 e9 03          	shr    $0x3,%rcx
   8:	80 3c 11 00          	cmpb   $0x0,(%rcx,%rdx,1)
   c:	75 2f                	jne    0x3d
   e:	48 8b 80 e8 10 00 00 	mov    0x10e8(%rax),%rax
  15:	48 ba 00 00 00 00 00 	movabs $0xdffffc0000000000,%rdx
  1c:	fc ff df 
  1f:	48 8d 78 30          	lea    0x30(%rax),%rdi
  23:	48 89 f9             	mov    %rdi,%rcx
  26:	48 c1 e9 03          	shr    $0x3,%rcx
  2a:*	80 3c 11 00          	cmpb   $0x0,(%rcx,%rdx,1)		<-- trapping instruction
  2e:	75 1c                	jne    0x4c
  30:	48 83 78 30 00       	cmpq   $0x0,0x30(%rax)
  35:	0f 95 c0             	setne  %al
  38:	48 83 c4 08          	add    $0x8,%rsp
  3c:	c3                   	ret
  3d:	48                   	rex.W
  3e:	89                   	.byte 0x89
  3f:	04                   	.byte 0x4

Code starting with the faulting instruction
===========================================
   0:	80 3c 11 00          	cmpb   $0x0,(%rcx,%rdx,1)
   4:	75 1c                	jne    0x22
   6:	48 83 78 30 00       	cmpq   $0x0,0x30(%rax)
   b:	0f 95 c0             	setne  %al
   e:	48 83 c4 08          	add    $0x8,%rsp
  12:	c3                   	ret
  13:	48                   	rex.W
  14:	89                   	.byte 0x89
  15:	04                   	.byte 0x4
[ 1544.474350][   T69] RSP: 0018:ffa00000004a76e0 EFLAGS: 00010216
[ 1544.474442][   T69] RAX: 0000000000000000 RBX: ff11000001e7a040 RCX: 0000000000000006
[ 1544.474552][   T69] RDX: dffffc0000000000 RSI: ff11000001e7a040 RDI: 0000000000000030
[ 1544.474665][   T69] RBP: ff11000012b88c80 R08: ffffffffabbb8550 R09: 1fe22000026c9e85
[ 1544.474780][   T69] R10: ff1100001b26d028 R11: ff11000009c510b0 R12: 1ff4000000094ee6
[ 1544.474891][   T69] R13: ff11000009c51000 R14: ff11000015a23800 R15: ff1100001b26d010
[ 1544.475004][   T69] FS:  0000000000000000(0000) GS:ff110000b6f64000(0000) knlGS:0000000000000000
[ 1544.475143][   T69] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1544.475239][   T69] CR2: 00007f726535a7b0 CR3: 000000007394f002 CR4: 0000000000771ef0
[ 1544.475348][   T69] PKRU: 55555554
[ 1544.475408][   T69] Call Trace:
[ 1544.475464][   T69]  <TASK>
[ 1544.475503][   T69]  ip6_finish_output2 (net/ipv6/ip6_output.c:84 (discriminator 3))
[ 1544.475581][   T69]  ? ip6_xmit (net/ipv6/ip6_output.c:61)
[ 1544.475652][   T69]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 1544.475728][   T69]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 1544.475801][   T69]  ? ip6_mtu (./include/linux/rcupdate.h:322 (discriminator 2) ./include/linux/rcupdate.h:881 (discriminator 2) ./include/net/ip6_route.h:382 (discriminator 2) net/ipv6/route.c:3281 (discriminator 2))
[ 1544.475856][   T69]  ip6_finish_output (net/ipv6/ip6_output.c:208 net/ipv6/ip6_output.c:219)
[ 1544.475928][   T69]  ip6_output (./include/linux/netfilter.h:307 net/ipv6/ip6_output.c:246)
[ 1544.475987][   T69]  ? ip6_finish_output (net/ipv6/ip6_output.c:227)
[ 1544.476058][   T69]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 1544.476131][   T69]  ? xfrm_bundle_lookup.constprop.0 (net/xfrm/xfrm_policy.c:3177)
[ 1544.476221][   T69]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 1544.476293][   T69]  ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:455)
[ 1544.476366][   T69]  ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:455)
[ 1544.476438][   T69]  ? icmp6_dst_alloc (net/ipv6/route.c:3357 (discriminator 1))
[ 1544.476510][   T69]  mld_sendpack (./include/linux/netfilter.h:319 ./include/linux/netfilter.h:312 net/ipv6/mcast.c:1855)
[ 1544.476584][   T69]  ? nf_hook.constprop.0 (net/ipv4/ip_forward.c:66)
[ 1544.476657][   T69]  ipv6_mc_dad_complete (net/ipv6/mcast.c:2280)
[ 1544.476733][   T69]  ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:455)
[ 1544.476805][   T69]  addrconf_dad_completed (net/ipv6/addrconf.c:4347)
[ 1544.476876][   T69]  ? addrconf_rs_timer (net/ipv6/addrconf.c:4313)
[ 1544.476948][   T69]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 1544.477019][   T69]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 1544.477092][   T69]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 1544.477164][   T69]  ? addrconf_dad_work (net/ipv6/addrconf.c:4274)
[ 1544.477236][   T69]  addrconf_dad_work (net/ipv6/addrconf.c:4274)
[ 1544.477308][   T69]  ? addrconf_dad_begin (net/ipv6/addrconf.c:4181)
[ 1544.477379][   T69]  ? process_one_work (kernel/workqueue.c:3252 (discriminator 2))
[ 1544.477453][   T69]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[ 1544.477526][   T69]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[ 1544.477600][   T69]  ? lock_acquire (./include/trace/events/lock.h:24 (discriminator 24) kernel/locking/lockdep.c:5831 (discriminator 24))
[ 1544.477672][   T69]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[ 1544.477747][   T69]  process_one_work (kernel/workqueue.c:3281)
[ 1544.477819][   T69]  ? pwq_dec_nr_in_flight (kernel/workqueue.c:3177)
[ 1544.477890][   T69]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 (discriminator 2) kernel/locking/lockdep.c:5870 (discriminator 2))
[ 1544.477963][   T69]  worker_thread (kernel/workqueue.c:3353 (discriminator 5) kernel/workqueue.c:3440 (discriminator 5))
[ 1544.478035][   T69]  ? rescuer_thread (kernel/workqueue.c:3386)
[ 1544.478106][   T69]  kthread (kernel/kthread.c:436)
[ 1544.478162][   T69]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 24))
[ 1544.478255][   T69]  ? kthread_affine_node (kernel/kthread.c:381)
[ 1544.478327][   T69]  ret_from_fork (arch/x86/kernel/process.c:164)
[ 1544.478401][   T69]  ? arch_exit_to_user_mode_prepare.isra.0 (arch/x86/entry/syscall_64.c:37)
[ 1544.478490][   T69]  ? __switch_to (./arch/x86/include/asm/cpufeature.h:101 (discriminator 1) arch/x86/kernel/process_64.c:377 (discriminator 1) arch/x86/kernel/process_64.c:665 (discriminator 1))
[ 1544.478564][   T69]  ? kthread_affine_node (kernel/kthread.c:381)


Finger prints:
mroute6_is_socket:ip6_finish_output2:ip6_finish_output:ip6_output:mld_sendpack