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-0,10.128.0.36' (ECDSA) to the list of known hosts.
executing program
syzkaller login: [   41.258974] kasan: CONFIG_KASAN_INLINE enabled
[   41.259739] kasan: GPF could be caused by NULL-ptr deref or user memory access
[   41.260717] general protection fault: 0000 [#1] SMP KASAN
[   41.261477] Dumping ftrace buffer:
[   41.261951]    (ftrace buffer empty)
[   41.262447] Modules linked in:
[   41.262897] CPU: 0 PID: 3086 Comm: syzkaller100264 Not tainted 4.15.0-rc2+ #209
[   41.263871] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   41.265096] RIP: 0010:string+0xb4/0x200
[   41.265625] RSP: 0018:ffff8801d309f868 EFLAGS: 00010006
[   41.266350] RAX: dffffc0000000000 RBX: fffffffffffffffe RCX: ffffffff8513785f
[   41.267302] RDX: 0e4deee40588e9c9 RSI: 1ffff1003a613f01 RDI: ffff8801d309f888
[   41.268273] RBP: ffff8801d309f8b8 R08: ffffed003971797e R09: ffffed003971797e
[   41.269222] R10: 0000000000000002 R11: ffffed003971797d R12: 726f77202c474e4a
[   41.270171] R13: 726f77202c474e49 R14: ffffffffffffffff R15: ffff8801cb8bcbea
[   41.271152] FS:  0000000000846880(0000) GS:ffff8801db400000(0000) knlGS:0000000000000000
[   41.272225] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   41.272998] CR2: 0000000020460ffc CR3: 00000001cbf8a000 CR4: 00000000001406f0
[   41.273952] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   41.274904] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   41.275869] Call Trace:
[   41.276225]  ? format_decode+0x10a/0x830
[   41.276769]  vsnprintf+0x863/0x1900
[   41.277287]  ? pointer+0x9e0/0x9e0
[   41.277765]  ? lock_release+0xda0/0xda0
[   41.278299]  seq_vprintf+0xe3/0x1a0
[   41.278807]  seq_printf+0xb3/0xe0
[   41.280285]  ? seq_vprintf+0x1a0/0x1a0
[   41.284139]  ? __lock_task_sighand+0x22f/0x6e0
[   41.288689]  ? zap_other_threads+0x240/0x240
[   41.293061]  ? kasan_kmalloc+0xad/0xe0
[   41.296920]  show_timer+0x1ee/0x2b0
[   41.300512]  ? timers_start+0x14c/0x1c0
[   41.304451]  seq_read+0x385/0x13d0
[   41.307964]  ? seq_lseek+0x3c0/0x3c0
[   41.311642]  ? selinux_file_permission+0x82/0x460
[   41.316451]  ? security_file_permission+0x89/0x1f0
[   41.321345]  ? rw_verify_area+0xe5/0x2b0
[   41.325371]  do_iter_read+0x3db/0x5b0
[   41.329136]  ? dup_iter+0x260/0x260
[   41.332733]  vfs_readv+0x121/0x1c0
[   41.336238]  ? compat_rw_copy_check_uvector+0x2e0/0x2e0
[   41.341565]  ? lock_release+0xda0/0xda0
[   41.345503]  ? trace_event_raw_event_sched_switch+0x800/0x800
[   41.351352]  ? fget_raw+0x20/0x20
[   41.354772]  ? __might_sleep+0x95/0x190
[   41.358712]  ? kasan_check_write+0x14/0x20
[   41.362911]  ? _copy_from_user+0x99/0x110
[   41.367027]  do_preadv+0x11b/0x1a0
[   41.370531]  ? do_preadv+0x11b/0x1a0
[   41.374209]  SyS_preadv+0x30/0x40
[   41.377633]  entry_SYSCALL_64_fastpath+0x1f/0x96
[   41.382351] RIP: 0033:0x440159
[   41.385504] RSP: 002b:00007ffebdb4f7a8 EFLAGS: 00000217 ORIG_RAX: 0000000000000127
[   41.393175] RAX: ffffffffffffffda RBX: 00007ffebdb4f7b0 RCX: 0000000000440159
[   41.400407] RDX: 0000000000000001 RSI: 00000000205e2ff0 RDI: 0000000000000003
[   41.407640] RBP: 0000000000000000 R08: 65732f636f72702f R09: 65732f636f72702f
[   41.414875] R10: 0000000000000000 R11: 0000000000000217 R12: 0000000000401a20
[   41.422106] R13: 0000000000401ab0 R14: 0000000000000000 R15: 0000000000000000
[   41.429347] Code: 01 00 00 e8 8f 7f 5c fc 4d 85 f6 0f 84 10 01 00 00 e8 81 7f 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 
[   41.448496] RIP: string+0xb4/0x200 RSP: ffff8801d309f868
[   41.453911] ---[ end trace 98af1e948d3cf5f6 ]---
[   41.458627] Kernel panic - not syncing: Fatal exception
[   41.463983] Dumping ftrace buffer:
[   41.467486]    (ftrace buffer empty)
[   41.471161] Kernel Offset: disabled
[   41.474752] Rebooting in 86400 seconds..