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-0,10.128.0.44' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 17.588139] BUG: unable to handle kernel paging request at 000000008131fd3c [ 17.589158] IP: show_timer+0x1c7/0x2b0 [ 17.589676] PGD 21ffd3067 P4D 21ffd3067 PUD 21ffd2067 PMD 0 [ 17.590464] Oops: 0000 [#1] SMP KASAN [ 17.590993] Dumping ftrace buffer: [ 17.591473] (ftrace buffer empty) [ 17.592012] Modules linked in: [ 17.592451] CPU: 1 PID: 3088 Comm: syzkaller999459 Not tainted 4.15.0-rc2-next-20171204+ #58 [ 17.593570] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 17.594788] task: 0000000032abdc2b task.stack: 00000000c727a7f6 [ 17.595587] RIP: 0010:show_timer+0x1c7/0x2b0 [ 17.596171] RSP: 0018:ffff8801cc17f9e0 EFLAGS: 00010806 [ 17.596878] RAX: dffffc0000000000 RBX: ffff8801cc8a8e00 RCX: ffffffff81cd3ffe [ 17.597831] RDX: 1ffffffff1a68706 RSI: ffffffff85f1a720 RDI: ffffffff8d343830 [ 17.598785] RBP: ffff8801cc17fa10 R08: ffffed0039959075 R09: ffffed0039959075 [ 17.599735] R10: ffff8801ccd6a400 R11: ffffed0039959074 R12: 0000000001000002 [ 17.600687] R13: ffff8801cc089800 R14: ffffffff85342920 R15: 0000000000000c09 [ 17.601640] FS: 00007f9d87ef7700(0000) GS:ffff8801db500000(0000) knlGS:0000000000000000 [ 17.602743] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 17.603516] CR2: fffffbfff1a68706 CR3: 00000001cc9e3000 CR4: 00000000001406e0 [ 17.604469] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 17.605421] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 17.606387] Call Trace: [ 17.606741] ? timers_start+0x14c/0x1c0 [ 17.607279] traverse+0x248/0xa00 [ 17.607791] ? seq_hlist_next+0xc0/0xc0 [ 17.608986] seq_read+0x96a/0x13d0 [ 17.612500] ? seq_lseek+0x3c0/0x3c0 [ 17.616179] ? selinux_file_permission+0x82/0x460 [ 17.621004] ? security_file_permission+0x89/0x1f0 [ 17.625906] ? rw_verify_area+0xe5/0x2b0 [ 17.629932] do_iter_read+0x3db/0x5b0 [ 17.633698] ? dup_iter+0x260/0x260 [ 17.637293] vfs_readv+0x121/0x1c0 [ 17.640802] ? compat_rw_copy_check_uvector+0x2e0/0x2e0 [ 17.646144] ? fget_raw+0x20/0x20 [ 17.649563] ? do_page_fault+0xee/0x720 [ 17.653510] ? syscall_return_slowpath+0x2ad/0x550 [ 17.658406] do_preadv+0x11b/0x1a0 [ 17.661911] ? do_preadv+0x11b/0x1a0 [ 17.665591] SyS_preadv+0x30/0x40 [ 17.669027] entry_SYSCALL_64_fastpath+0x1f/0x96 [ 17.673748] RIP: 0033:0x445c99 [ 17.676905] RSP: 002b:00007f9d87ef6d38 EFLAGS: 00000246 ORIG_RAX: 0000000000000127 [ 17.684576] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000445c99 [ 17.691817] RDX: 0000000000000004 RSI: 0000000020f40000 RDI: 0000000000000004 [ 17.699052] RBP: 0000000000000000 R08: 00007f9d87ef7700 R09: 0000000000000000 [ 17.706290] R10: 0000000002000004 R11: 0000000000000246 R12: 0000000000000000 [ 17.713524] R13: 00007ffd5c376aff R14: 00007f9d87ef79c0 R15: 0000000000000000 [ 17.720768] Code: 89 c7 4c 0f 44 f1 41 83 e4 fb 4d 63 e4 e8 42 fc a2 ff 4a 8d 3c e5 20 38 34 85 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 a2 00 00 00 4a 8b 14 e5 20 38 34 85 4c 89 ef [ 17.739836] RIP: show_timer+0x1c7/0x2b0 RSP: ffff8801cc17f9e0 [ 17.745681] CR2: fffffbfff1a68706 [ 17.749103] ---[ end trace 9b76201f752b2992 ]--- [ 17.753823] Kernel panic - not syncing: Fatal exception [ 17.759645] Dumping ftrace buffer: [ 17.763157] (ftrace buffer empty) [ 17.766833] Kernel Offset: disabled [ 17.770434] Rebooting in 86400 seconds..