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-mmots-kasan-gce-4,10.128.0.28' (ECDSA) to the list of known hosts.
executing program
syzkaller login: [   54.298198] kasan: CONFIG_KASAN_INLINE enabled
[   54.298969] kasan: GPF could be caused by NULL-ptr deref or user memory access
[   54.300171] general protection fault: 0000 [#1] SMP KASAN
[   54.300909] Dumping ftrace buffer:
[   54.301385]    (ftrace buffer empty)
[   54.301881] Modules linked in:
[   54.302317] CPU: 1 PID: 2995 Comm: syzkaller181830 Not tainted 4.14.0-rc5-mm1+ #20
[   54.303326] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   54.304556] task: ffff8801d1d2a7c0 task.stack: ffff8801c1700000
[   54.305363] RIP: 0010:asn1_ber_decoder+0x431/0x1c20
[   54.306027] RSP: 0018:ffff8801c1707908 EFLAGS: 00010246
[   54.306753] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
[   54.307706] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff851d1208
[   54.308659] RBP: ffff8801c1707bc0 R08: 0000000000000001 R09: 0000000000000000
[   54.309612] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
[   54.310564] R13: 0000000000000000 R14: dffffc0000000000 R15: ffff8801c1707b98
[   54.311527] FS:  0000000000b16880(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000
[   54.312602] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   54.313393] CR2: 0000000020f49ffb CR3: 00000001cfbc6000 CR4: 00000000001406e0
[   54.314349] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   54.315302] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   54.316253] Call Trace:
[   54.316627]  ? pkcs7_parse_message+0x18a/0x710
[   54.317239]  ? verify_pkcs7_signature+0x8d/0x290
[   54.317874]  ? entry_SYSCALL_64_fastpath+0x1e/0xbe
[   54.319691]  ? depot_save_stack+0x490/0x490
[   54.323982]  ? __lock_is_held+0xb6/0x140
[   54.328016]  ? __lock_is_held+0xb6/0x140
[   54.332045]  ? pkcs7_parse_message+0x18a/0x710
[   54.336594]  ? rcu_read_lock_sched_held+0x108/0x120
[   54.341578]  ? kmem_cache_alloc_trace+0x456/0x750
[   54.346388]  ? lock_release+0xa40/0xa40
[   54.350331]  pkcs7_parse_message+0x2b3/0x710
[   54.354711]  verify_pkcs7_signature+0x8d/0x290
[   54.359261]  ? restrict_link_by_builtin_and_secondary_trusted+0x80/0x80
[   54.365979]  ? __down_interruptible+0x6b0/0x6b0
[   54.370617]  ? current_kernel_time64+0x1d4/0x2f0
[   54.375339]  ? pkcs7_supply_detached_data+0x90/0x90
[   54.380320]  pkcs7_preparse+0x7b/0xc0
[   54.384085]  ? pkcs7_preparse+0xc0/0xc0
[   54.388028]  key_create_or_update+0x4c6/0xe20
[   54.392493]  ? key_type_lookup+0xd0/0xd0
[   54.396519]  ? join_session_keyring+0x300/0x300
[   54.401166]  ? memdup_user+0x5e/0x90
[   54.404846]  SyS_add_key+0x18a/0x340
[   54.408526]  ? key_get_type_from_user.constprop.10+0xd0/0xd0
[   54.414287]  ? trace_hardirqs_on_caller+0x421/0x5c0
[   54.419275]  entry_SYSCALL_64_fastpath+0x1f/0xbe
[   54.423996] RIP: 0033:0x43fd89
[   54.427153] RSP: 002b:00007ffc2bd26b38 EFLAGS: 00000286 ORIG_RAX: 00000000000000f8
[   54.434825] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 000000000043fd89
[   54.442062] RDX: 0000000020000000 RSI: 0000000020f49ffb RDI: 0000000020f4a000
[   54.449296] RBP: 0000000000000082 R08: ffffffffffffffff R09: 0000000000000000
[   54.456531] R10: 0000000000000000 R11: 0000000000000286 R12: 00000000004016f0
[   54.463766] R13: 0000000000401780 R14: 0000000000000000 R15: 0000000000000000
[   54.471009] Code: 1a ff 48 8d 43 01 49 89 87 80 fe ff ff 48 89 85 90 fd ff ff 48 8b 85 b8 fd ff ff 48 01 d8 48 89 c2 48 89 c1 48 c1 ea 03 83 e1 07 <42> 0f b6 14 32 38 ca 7f 08 84 d2 0f 85 e5 0f 00 00 0f b6 00 88 
[   54.490080] RIP: asn1_ber_decoder+0x431/0x1c20 RSP: ffff8801c1707908
[   54.496599] ---[ end trace a0c855ee92a6da8b ]---
[   54.501335] Kernel panic - not syncing: Fatal exception
[   54.506693] Dumping ftrace buffer:
[   54.510201]    (ftrace buffer empty)
[   54.513879] Kernel Offset: disabled
[   54.517475] Rebooting in 86400 seconds..