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-386-4,10.128.0.29' (ECDSA) to the list of known hosts.
executing program
syzkaller login: [   58.442637] kasan: CONFIG_KASAN_INLINE enabled
[   58.443373] kasan: GPF could be caused by NULL-ptr deref or user memory access
[   58.444344] general protection fault: 0000 [#1] SMP KASAN
[   58.445077] Dumping ftrace buffer:
[   58.445551]    (ftrace buffer empty)
[   58.446047] Modules linked in:
[   58.446480] CPU: 0 PID: 3088 Comm: syzkaller158965 Not tainted 4.15.0-rc2+ #116
[   58.447453] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   58.448672] task: 000000000f5cd13f task.stack: 000000004a45c4a4
[   58.449486] RIP: 0010:string+0xb4/0x200
[   58.450039] RSP: 0018:ffff8801cce776c8 EFLAGS: 00010003
[   58.450747] RAX: dffffc0000000000 RBX: fffffffffffffffe RCX: ffffffff85136fbf
[   58.451697] RDX: 0ece4cae6cae440d RSI: 1ffff100399cee01 RDI: ffff8801cce776e8
[   58.452651] RBP: ffff8801cce77718 R08: ffffed00396b44b6 R09: ffffed00396b44b6
[   58.453602] R10: 0000000000000002 R11: ffffed00396b44b5 R12: 7672657365722070
[   58.454554] R13: 767265736572206f R14: ffffffffffffffff R15: ffff8801cb5a25aa
[   58.455508] FS:  0000000000000000(0000) GS:ffff8801db400000(0063) knlGS:00000000091fe840
[   58.456581] CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
[   58.457357] CR2: 0000000020460ffc CR3: 00000001d784b000 CR4: 00000000001406f0
[   58.458309] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   58.459262] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   58.460213] Call Trace:
[   58.460571]  ? format_decode+0x10a/0x830
[   58.461117]  vsnprintf+0x863/0x1900
[   58.461608]  ? pointer+0x9e0/0x9e0
[   58.462087]  ? lock_release+0xda0/0xda0
[   58.462623]  seq_vprintf+0xe3/0x1a0
[   58.463113]  seq_printf+0xb3/0xe0
[   58.466531]  ? seq_vprintf+0x1a0/0x1a0
[   58.470383]  ? __lock_task_sighand+0x22f/0x6e0
[   58.474933]  ? zap_other_threads+0x240/0x240
[   58.479308]  ? kasan_kmalloc+0xad/0xe0
[   58.483170]  show_timer+0x1ee/0x2b0
[   58.486761]  ? timers_start+0x14c/0x1c0
[   58.490704]  seq_read+0x385/0x13d0
[   58.494215]  ? seq_lseek+0x3c0/0x3c0
[   58.497893]  ? selinux_file_permission+0x82/0x460
[   58.502702]  ? security_file_permission+0x89/0x1f0
[   58.507598]  ? rw_verify_area+0xe5/0x2b0
[   58.511626]  do_iter_read+0x3db/0x5b0
[   58.515392]  ? iov_iter_get_pages+0x1150/0x1150
[   58.520029]  compat_readv+0x1bf/0x270
[   58.523796]  ? vfs_iter_read+0xb0/0xb0
[   58.527659]  ? fget_raw+0x20/0x20
[   58.531078]  ? down_read_trylock+0xdb/0x170
[   58.535365]  ? __do_page_fault+0x32d/0xc90
[   58.539565]  ? __handle_mm_fault+0x3e20/0x3e20
[   58.544110]  ? vmacache_find+0x5f/0x280
[   58.548056]  do_compat_preadv64+0xdc/0x100
[   58.552254]  ? do_compat_preadv64+0xdc/0x100
[   58.556628]  compat_SyS_preadv+0x3b/0x50
[   58.560668]  ? compat_SyS_preadv64+0x40/0x40
[   58.565042]  do_fast_syscall_32+0x3ee/0xf9d
[   58.569335]  ? do_int80_syscall_32+0x9d0/0x9d0
[   58.573880]  ? kasan_check_read+0x11/0x20
[   58.577992]  ? syscall_return_slowpath+0x550/0x550
[   58.582886]  ? SyS_rt_sigaction+0x94/0x1b0
[   58.587087]  ? sysret32_from_system_call+0x5/0x3b
[   58.591898]  ? trace_hardirqs_off_thunk+0x1a/0x1c
[   58.596712]  entry_SYSENTER_compat+0x51/0x60
[   58.601092] RIP: 0023:0xf7f06c79
[   58.604423] RSP: 002b:00000000ff8f677c EFLAGS: 00000217 ORIG_RAX: 000000000000014d
[   58.612111] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000205e2ff0
[   58.619382] RDX: 0000000000000001 RSI: 0000000000000000 RDI: 0000000000000000
[   58.626629] RBP: 0000000020f6afa0 R08: 0000000000000000 R09: 0000000000000000
[   58.633872] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
[   58.641105] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
[   58.648352] Code: 01 00 00 e8 7f 88 5c fc 4d 85 f6 0f 84 10 01 00 00 e8 71 88 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 
[   58.667428] RIP: string+0xb4/0x200 RSP: ffff8801cce776c8
[   58.672848] ---[ end trace f4d7a4daa827a3d2 ]---
[   58.677566] Kernel panic - not syncing: Fatal exception
[   58.683264] Dumping ftrace buffer:
[   58.686774]    (ftrace buffer empty)
[   58.690449] Kernel Offset: disabled
[   58.694042] Rebooting in 86400 seconds..