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-kasan-gce-386-3,10.128.0.50' (ECDSA) to the list of known hosts.
executing program
syzkaller login: [   25.598534] kasan: CONFIG_KASAN_INLINE enabled
[   25.599289] kasan: GPF could be caused by NULL-ptr deref or user memory access
[   25.600258] general protection fault: 0000 [#1] SMP KASAN
[   25.600990] Dumping ftrace buffer:
[   25.601466]    (ftrace buffer empty)
[   25.601960] Modules linked in:
[   25.602405] CPU: 0 PID: 3084 Comm: syzkaller407098 Not tainted 4.15.0-rc1+ #115
[   25.603401] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   25.604635] task: 000000009ceaf861 task.stack: 000000009e69bd39
[   25.605441] RIP: 0010:string+0xb4/0x200
[   25.605986] RSP: 0018:ffff8801cbd675e0 EFLAGS: 00010006
[   25.606711] RAX: dffffc0000000000 RBX: fffffffffffffffe RCX: ffffffff85135fbf
[   25.607661] RDX: 06c7240eabebe406 RSI: 1ffff100397ace01 RDI: ffff8801cbd67600
[   25.608611] RBP: ffff8801cbd67630 R08: ffffed00397288ae R09: ffffed00397288ae
[   25.609564] R10: 0000000000000002 R11: ffffed00397288ad R12: 363920755f5f2034
[   25.610514] R13: 363920755f5f2033 R14: ffffffffffffffff R15: ffff8801cb94456a
[   25.611466] FS:  0000000000000000(0000) GS:ffff8801db400000(0063) knlGS:000000000955f840
[   25.612540] CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
[   25.613314] CR2: 00000000205e2ff0 CR3: 00000001cd52f000 CR4: 00000000001406f0
[   25.614304] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   25.615255] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   25.616221] Call Trace:
[   25.616577]  ? format_decode+0x10a/0x830
[   25.617122]  vsnprintf+0x863/0x1900
[   25.617611]  ? pointer+0x9e0/0x9e0
[   25.618089]  ? lock_release+0xda0/0xda0
[   25.618646]  seq_vprintf+0xe3/0x1a0
[   25.619140]  seq_printf+0xb3/0xe0
[   25.622556]  ? seq_vprintf+0x1a0/0x1a0
[   25.626410]  ? __lock_task_sighand+0x22f/0x6e0
[   25.630960]  ? zap_other_threads+0x240/0x240
[   25.635332]  ? kasan_kmalloc+0xad/0xe0
[   25.639188]  show_timer+0x1ee/0x2b0
[   25.642778]  ? timers_start+0x14c/0x1c0
[   25.646716]  traverse+0x248/0xa00
[   25.650137]  ? seq_hlist_next+0xc0/0xc0
[   25.654079]  seq_read+0x96a/0x13d0
[   25.657592]  ? seq_lseek+0x3c0/0x3c0
[   25.661273]  ? selinux_file_permission+0x82/0x460
[   25.666090]  ? security_file_permission+0x89/0x1f0
[   25.670988]  ? rw_verify_area+0xe5/0x2b0
[   25.675018]  do_iter_read+0x3db/0x5b0
[   25.678785]  ? iov_iter_get_pages+0x1150/0x1150
[   25.683428]  compat_readv+0x1bf/0x270
[   25.687226]  ? vfs_iter_read+0xb0/0xb0
[   25.691087]  ? fget_raw+0x20/0x20
[   25.694507]  ? down_read_trylock+0xdb/0x170
[   25.698794]  ? __do_page_fault+0x32d/0xc90
[   25.702995]  ? __handle_mm_fault+0x3e20/0x3e20
[   25.707540]  ? vmacache_find+0x5f/0x280
[   25.711519]  do_compat_preadv64+0xdc/0x100
[   25.715724]  ? do_compat_preadv64+0xdc/0x100
[   25.720100]  compat_SyS_preadv+0x3b/0x50
[   25.724127]  ? compat_SyS_preadv64+0x40/0x40
[   25.728501]  do_fast_syscall_32+0x3ee/0xf9d
[   25.732793]  ? do_int80_syscall_32+0x9d0/0x9d0
[   25.737341]  ? trace_hardirqs_on_thunk+0x1a/0x1c
[   25.742064]  ? lockdep_sys_exit+0x47/0xf0
[   25.746182]  ? syscall_return_slowpath+0x2ad/0x550
[   25.751076]  ? lockdep_sys_exit+0x47/0xf0
[   25.755193]  ? retint_user+0x18/0x18
[   25.758872]  ? trace_hardirqs_off_thunk+0x1a/0x1c
[   25.763682]  entry_SYSENTER_compat+0x51/0x60
[   25.768054] RIP: 0023:0xf7fa2c79
[   25.771383] RSP: 002b:00000000ffbd95bc EFLAGS: 00000292 ORIG_RAX: 000000000000014d
[   25.779054] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000205e2ff0
[   25.786303] RDX: 0000000000000001 RSI: 0000000000000000 RDI: 0000000000000002
[   25.793536] RBP: 0000000020a06fa0 R08: 0000000000000000 R09: 0000000000000000
[   25.800768] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
[   25.808001] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
[   25.815243] Code: 01 00 00 e8 7f 98 5c fc 4d 85 f6 0f 84 10 01 00 00 e8 71 98 5c 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 
[   25.834303] RIP: string+0xb4/0x200 RSP: ffff8801cbd675e0
[   25.839719] ---[ end trace 10e1fc8bb27857dd ]---
[   25.844438] Kernel panic - not syncing: Fatal exception
[   25.849793] Dumping ftrace buffer:
[   25.853300]    (ftrace buffer empty)
[   25.856979] Kernel Offset: disabled
[   25.860569] Rebooting in 86400 seconds..