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-5,10.128.0.50' (ECDSA) to the list of known hosts.
executing program
syzkaller login: [   32.212445] kasan: CONFIG_KASAN_INLINE enabled
[   32.213153] kasan: GPF could be caused by NULL-ptr deref or user memory access
[   32.214123] general protection fault: 0000 [#1] SMP KASAN
[   32.214865] Dumping ftrace buffer:
[   32.215337]    (ftrace buffer empty)
[   32.215847] Modules linked in:
[   32.216282] CPU: 1 PID: 3089 Comm: syzkaller063360 Not tainted 4.15.0-rc2-next-20171206+ #60
[   32.217418] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   32.218641] RIP: 0010:string+0xb4/0x200
[   32.219169] RSP: 0018:ffff8801cbbff868 EFLAGS: 00010006
[   32.219876] RAX: dffffc0000000000 RBX: fffffffffffffffe RCX: ffffffff8514f58f
[   32.220828] RDX: 0eae6cae4bee8c6c RSI: 1ffff1003977ff01 RDI: ffff8801cbbff888
[   32.221793] RBP: ffff8801cbbff8b8 R08: ffffed003976d13e R09: ffffed003976d13e
[   32.222744] R10: 0000000000000002 R11: ffffed003976d13d R12: 757365725f746362
[   32.223711] R13: 757365725f746361 R14: ffffffffffffffff R15: ffff8801cbb689ea
[   32.224662] FS:  00000000018a3880(0000) GS:ffff8801db500000(0000) knlGS:0000000000000000
[   32.225736] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   32.226534] CR2: 00000000205e2ff0 CR3: 00000001ce3e3000 CR4: 00000000001406e0
[   32.227529] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   32.228548] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   32.229516] Call Trace:
[   32.229886]  ? format_decode+0x10a/0x830
[   32.230431]  vsnprintf+0x863/0x1900
[   32.230920]  ? pointer+0x9e0/0x9e0
[   32.231400]  ? lock_release+0xda0/0xda0
[   32.231973]  seq_vprintf+0xe3/0x1a0
[   32.232462]  seq_printf+0xb3/0xe0
[   32.235376]  ? seq_vprintf+0x1a0/0x1a0
[   32.239228]  ? __lock_task_sighand+0x22f/0x6e0
[   32.243781]  ? zap_other_threads+0x240/0x240
[   32.248155]  ? kasan_kmalloc+0xad/0xe0
[   32.252012]  show_timer+0x1ee/0x2b0
[   32.255602]  ? timers_start+0x14c/0x1c0
[   32.259541]  seq_read+0x385/0x13d0
[   32.263054]  ? seq_lseek+0x3c0/0x3c0
[   32.266740]  ? selinux_file_permission+0x82/0x460
[   32.271549]  ? security_file_permission+0x89/0x1f0
[   32.276443]  ? rw_verify_area+0xe5/0x2b0
[   32.280468]  do_iter_read+0x3db/0x5b0
[   32.284234]  ? dup_iter+0x260/0x260
[   32.287831]  vfs_readv+0x121/0x1c0
[   32.291338]  ? may_open_dev+0xe0/0xe0
[   32.295104]  ? compat_rw_copy_check_uvector+0x2e0/0x2e0
[   32.300432]  ? mm_fault_error+0x2c0/0x2c0
[   32.304545]  ? fget_raw+0x20/0x20
[   32.307963]  ? do_page_fault+0xee/0x720
[   32.311904]  ? putname+0xf3/0x130
[   32.315323]  ? do_sys_open+0x320/0x6d0
[   32.319177]  do_preadv+0x11b/0x1a0
[   32.322689]  ? do_preadv+0x11b/0x1a0
[   32.326369]  SyS_preadv+0x30/0x40
[   32.329791]  entry_SYSCALL_64_fastpath+0x1f/0x96
[   32.334512] RIP: 0033:0x440149
[   32.337667] RSP: 002b:00007ffcd43aadd8 EFLAGS: 00000213 ORIG_RAX: 0000000000000127
[   32.345339] RAX: ffffffffffffffda RBX: 00007ffcd43aade0 RCX: 0000000000440149
[   32.352574] RDX: 0000000000000001 RSI: 00000000205e2ff0 RDI: 0000000000000003
[   32.359816] RBP: 0000000000000000 R08: 0000000000000011 R09: 65732f636f72702f
[   32.367052] R10: 0000000000000000 R11: 0000000000000213 R12: 0000000000401a10
[   32.374297] R13: 0000000000401aa0 R14: 0000000000000000 R15: 0000000000000000
[   32.381544] Code: 01 00 00 e8 bf 46 5b fc 4d 85 f6 0f 84 10 01 00 00 e8 b1 46 5b fc 4c 89 ea 48 b8 00 00 00 00 00 fc ff df 4d 8d 65 01 48 c1 ea 03 <0f> b6 04 02 4c 89 ea 83 e2 07 38 d0 7f 08 84 c0 0f 85 ec 00 00 
[   32.400604] RIP: string+0xb4/0x200 RSP: ffff8801cbbff868
[   32.406021] ---[ end trace 558b65a27a44b1c2 ]---
[   32.410738] Kernel panic - not syncing: Fatal exception
[   32.416096] Dumping ftrace buffer:
[   32.419602]    (ftrace buffer empty)
[   32.423276] Kernel Offset: disabled
[   32.426868] Rebooting in 86400 seconds..