net.ipv6.conf.syz0.accept_dad = 0
net.ipv6.conf.syz0.router_solicitations = 0
executing program
syzkaller login: [   23.828555] TCP: request_sock_TCP: Possible SYN flooding on port 20000. Sending cookies.  Check SNMP counters.
executing program
[   23.952888] ------------[ cut here ]------------
[   23.953386] kernel BUG at net/key/af_key.c:2068!
[   23.953800] invalid opcode: 0000 [#1] SMP KASAN
[   23.954200] Dumping ftrace buffer:
[   23.954503]    (ftrace buffer empty)
[   23.954819] Modules linked in:
[   23.955098] CPU: 2 PID: 3061 Comm: syzkaller238168 Not tainted 4.13.0-rc6-next-20170825+ #9
[   23.955792] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011
[   23.956479] task: ffff88003b4901c0 task.stack: ffff88003dd68000
[   23.956989] RIP: 0010:pfkey_xfrm_policy2msg+0x1cc6/0x2330
[   23.958565] RSP: 0018:ffff88003dd6f4b0 EFLAGS: 00010297
[   23.959025] RAX: ffff88003b4901c0 RBX: ffff88006978828c RCX: 0000000000000000
[   23.959653] RDX: 0000000000000000 RSI: 000000000000204e RDI: ffff88006978812c
[   23.960333] RBP: ffff88003dd6f588 R08: 0000000000000001 R09: ffff8800697884c0
[   23.960945] R10: 000000000000001b R11: ffffed000d2f10b2 R12: ffff880069788148
[   23.961601] R13: 0000000000000001 R14: 0000000000000008 R15: ffff880069788040
[   23.962243] FS:  00007f12f7723700(0000) GS:ffff88006de00000(0000) knlGS:0000000000000000
[   23.962971] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   23.963504] CR2: 0000000020002ff0 CR3: 000000006b712000 CR4: 00000000000006e0
[   23.964124] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   23.965493] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   23.966516] Call Trace:
[   23.966879]  ? pfkey_sockaddr_fill+0x340/0x340
[   23.967542]  ? pfkey_xfrm_policy2msg_size+0x1d3/0x230
[   23.969092]  dump_sp+0x14f/0x510
[   23.970710]  ? find_held_lock+0x39/0x1d0
[   23.971760]  ? pfkey_flush+0x3c0/0x3c0
[   23.972053]  ? xfrm_policy_walk+0x192/0xa30
[   23.972380]  xfrm_policy_walk+0x2f1/0xa30
[   23.972725]  ? pfkey_flush+0x3c0/0x3c0
[   23.973524]  ? xfrm_audit_policy_delete+0x1f0/0x1f0
[   23.973964]  ? pfkey_broadcast+0x230/0x780
[   23.974334]  ? __kfree_skb+0x20/0x20
[   23.974767]  ? lock_release+0xd70/0xd70
[   23.975102]  ? __lock_is_held+0xbc/0x140
[   23.975453]  ? __mutex_unlock_slowpath+0xe9/0xac0
[   23.975930]  ? wait_for_completion+0x770/0x770
[   23.976331]  ? pfkey_acquire+0x220/0x220
[   23.976850]  ? pfkey_broadcast_one+0x6f0/0x6f0
[   23.981589]  pfkey_dump_sp+0x42/0x50
[   23.982666]  pfkey_do_dump+0xaa/0x3f0
[   23.983211]  ? xfrm_policy_walk_init+0x69/0x1c0
[   23.983828]  ? dump_sa+0x5e0/0x5e0
[   23.984303]  pfkey_spddump+0x1a0/0x210
[   23.984823]  ? pfkey_recvmsg+0x710/0x710
[   23.985145]  pfkey_process+0x60b/0x720
[   23.985473]  ? pfkey_send_new_mapping+0x11b0/0x11b0
[   23.985881]  ? kasan_check_write+0x14/0x20
[   23.986247]  pfkey_sendmsg+0x4d6/0x9f0
[   23.986593]  ? pfkey_spdget+0xb00/0xb00
[   23.986880]  ? selinux_socket_sendmsg+0x36/0x40
[   23.987523]  ? security_socket_sendmsg+0x89/0xb0
[   23.989549]  ? pfkey_spdget+0xb00/0xb00
[   23.991504]  sock_sendmsg+0xca/0x110
[   23.991812]  sock_write_iter+0x320/0x5e0
[   23.992172]  ? sock_sendmsg+0x110/0x110
[   23.992500]  ? iov_iter_init+0xaf/0x1d0
[   23.992851]  __vfs_write+0x68a/0x970
[   23.993179]  ? default_llseek+0x2a0/0x2a0
[   23.993539]  ? selinux_capset+0x100/0x100
[   23.993887]  ? _cond_resched+0x14/0x30
[   23.994485]  ? selinux_file_permission+0x82/0x460
[   23.995656]  ? rw_verify_area+0xe5/0x2b0
[   23.996147]  ? __fdget_raw+0x20/0x20
[   23.996427]  vfs_write+0x18f/0x510
[   23.996769]  SyS_write+0xef/0x220
[   23.997082]  ? SyS_read+0x220/0x220
[   23.997368]  ? trace_hardirqs_on_caller+0x421/0x5c0
[   23.997854]  ? trace_hardirqs_on_thunk+0x1a/0x1c
[   23.998275]  entry_SYSCALL_64_fastpath+0x1f/0xbe
[   23.998722] RIP: 0033:0x4402b9
[   23.999228] RSP: 002b:00007f12f7722d88 EFLAGS: 00000206 ORIG_RAX: 0000000000000001
[   24.006842] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00000000004402b9
[   24.007453] RDX: 0000000000000010 RSI: 0000000020002ff0 RDI: 0000000000000008
[   24.008077] RBP: 0000000000000086 R08: 00007f12f7723700 R09: 0000000000000000
[   24.008640] R10: 00007f12f7723700 R11: 0000000000000206 R12: 0000000000000000
[   24.009240] R13: 0000000000000000 R14: 00007f12f77239c0 R15: 00007f12f7723700
[   24.009816] Code: ff ff ff 10 00 00 00 e9 2a e4 ff ff e8 b4 b3 2a fd 48 8b 85 70 ff ff ff be 01 00 00 00 66 89 70 04 e9 73 f4 ff ff e8 9a b3 2a fd <0f> 0b e8 d3 54 5f fd e9 13 ff ff ff 48 89 df e8 66 55 5f fd e9 
[   24.011444] RIP: pfkey_xfrm_policy2msg+0x1cc6/0x2330 RSP: ffff88003dd6f4b0
[   24.026530] ---[ end trace 64327239e05a8f8d ]---
[   24.026862] Kernel panic - not syncing: Fatal exception in interrupt
[   24.029081] Dumping ftrace buffer:
[   24.029426]    (ftrace buffer empty)
[   24.029786] Kernel Offset: disabled
[   24.030174] Rebooting in 86400 seconds..