INIT: Entering runlevel: 2

[info] Using makefile-style concurrent boot in runlevel 2.
[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c.
[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c.
[....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c.

Debian GNU/Linux 7 syzkaller ttyS0

Warning: Permanently added 'ci-upstream-next-kasan-gce-2,10.128.0.33' (ECDSA) to the list of known hosts.
executing program
syzkaller login: [   17.332935] kasan: CONFIG_KASAN_INLINE enabled
[   17.333697] kasan: GPF could be caused by NULL-ptr deref or user memory access
[   17.334944] general protection fault: 0000 [#1] SMP KASAN
[   17.335729] Dumping ftrace buffer:
[   17.336215]    (ftrace buffer empty)
[   17.336719] Modules linked in:
[   17.337155] CPU: 1 PID: 2994 Comm: syzkaller423302 Not tainted 4.14.0-rc7-next-20171103+ #38
[   17.338303] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   17.339522] task: ffff8801ce610600 task.stack: ffff8801ccd60000
[   17.340343] RIP: 0010:asn1_ber_decoder+0x41e/0x1af0
[   17.341033] RSP: 0018:ffff8801ccd678d0 EFLAGS: 00010246
[   17.341757] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
[   17.342710] RDX: 0000000000000000 RSI: ffff8801ce4be300 RDI: ffffffff853f1920
[   17.343664] RBP: ffff8801ccd67b88 R08: 0000000000000060 R09: 0000000000000000
[   17.344656] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
[   17.345618] R13: 0000000000000000 R14: ffff8801ccd67b60 R15: dffffc0000000000
[   17.346642] FS:  0000000001853880(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000
[   17.347718] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   17.348493] CR2: 0000000020000000 CR3: 00000001ce5e9000 CR4: 00000000001406e0
[   17.349445] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   17.350406] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   17.351378] Call Trace:
[   17.351735]  ? pkcs7_parse_message+0x18a/0x730
[   17.352358]  ? verify_pkcs7_signature+0x8d/0x290
[   17.352988]  ? pkcs7_preparse+0x7b/0xc0
[   17.356499]  ? depot_save_stack+0x490/0x490
[   17.360787]  ? __lock_is_held+0xbc/0x140
[   17.364823]  ? __lock_is_held+0xbc/0x140
[   17.368853]  ? pkcs7_parse_message+0x18a/0x730
[   17.373401]  ? rcu_read_lock_sched_held+0x108/0x120
[   17.378385]  ? kmem_cache_alloc_trace+0x459/0x750
[   17.383196]  ? lock_release+0xd70/0xd70
[   17.387139]  pkcs7_parse_message+0x2b3/0x730
[   17.391513]  ? key_task_permission+0x330/0x330
[   17.396062]  ? pkcs7_supply_detached_data+0x90/0x90
[   17.401044]  verify_pkcs7_signature+0x8d/0x290
[   17.405593]  ? restrict_link_by_builtin_and_secondary_trusted+0x80/0x80
[   17.412313]  ? __down_interruptible+0x6b0/0x6b0
[   17.416960]  ? trace_hardirqs_on+0xd/0x10
[   17.421074]  ? current_kernel_time64+0x1d4/0x2f0
[   17.425799]  ? pkcs7_supply_detached_data+0x90/0x90
[   17.430783]  pkcs7_preparse+0x7b/0xc0
[   17.434549]  ? pkcs7_preparse+0xc0/0xc0
[   17.438490]  key_create_or_update+0x533/0x1040
[   17.443041]  ? key_type_lookup+0xd0/0xd0
[   17.447069]  ? join_session_keyring+0x300/0x300
[   17.451706]  ? mem_cgroup_commit_charge+0x111/0x750
[   17.456703]  ? memdup_user+0x5e/0x90
[   17.460387]  SyS_add_key+0x18a/0x340
[   17.464068]  ? key_get_type_from_user.constprop.10+0xd0/0xd0
[   17.469830]  ? trace_hardirqs_on_caller+0x421/0x5c0
[   17.474817]  entry_SYSCALL_64_fastpath+0x1f/0xbe
[   17.479540] RIP: 0033:0x43fcd9
[   17.482694] RSP: 002b:00007ffec7f88f98 EFLAGS: 00000217 ORIG_RAX: 00000000000000f8
[   17.490379] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 000000000043fcd9
[   17.497622] RDX: 0000000020000000 RSI: 0000000020000ffb RDI: 0000000020000000
[   17.504858] RBP: 0000000000000086 R08: fffffffffffffffc R09: 0000000000000000
[   17.512094] R10: 0000000000000000 R11: 0000000000000217 R12: 0000000000401640
[   17.519329] R13: 00000000004016d0 R14: 0000000000000000 R15: 0000000000000000
[   17.526575] Code: 19 ff 48 8d 43 01 49 89 86 80 fe ff ff 48 89 85 a8 fd ff ff 48 8b 85 c0 fd ff ff 48 01 d8 48 89 c2 48 89 c1 48 c1 ea 03 83 e1 07 <42> 0f b6 14 3a 38 ca 7f 08 84 d2 0f 85 cd 0f 00 00 0f b6 00 88 
[   17.545656] RIP: asn1_ber_decoder+0x41e/0x1af0 RSP: ffff8801ccd678d0
[   17.552173] ---[ end trace b2530eb5d3118009 ]---
[   17.557040] Kernel panic - not syncing: Fatal exception
[   17.562825] Dumping ftrace buffer:
[   17.566854]    (ftrace buffer empty)
[   17.570528] Kernel Offset: disabled
[   17.574123] Rebooting in 86400 seconds..