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-386-3,10.128.0.55' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 26.222677] BUG: unable to handle kernel paging request at 000000009233be62 [ 26.224127] IP: show_timer+0x1c7/0x2b0 [ 26.225047] PGD 21ffd3067 P4D 21ffd3067 PUD 21ffd2067 PMD 0 [ 26.226642] Oops: 0000 [#1] SMP KASAN [ 26.227155] Dumping ftrace buffer: [ 26.228036] (ftrace buffer empty) [ 26.228895] Modules linked in: [ 26.229354] CPU: 0 PID: 3090 Comm: syzkaller055085 Not tainted 4.15.0-rc2+ #116 [ 26.230400] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 26.231632] task: 000000004b8e2289 task.stack: 00000000ea21bb0c [ 26.232493] RIP: 0010:show_timer+0x1c7/0x2b0 [ 26.233084] RSP: 0018:ffff8801cba5f840 EFLAGS: 00010802 [ 26.233817] RAX: dffffc0000000000 RBX: ffff8801cbea3e00 RCX: ffffffff81ccd0ce [ 26.234781] RDX: 1ffffffff1a68546 RSI: ffffffff85f1a0e0 RDI: ffffffff8d342a30 [ 26.235791] RBP: ffff8801cba5f870 R08: ffffed0039742c8d R09: ffffed0039742c8d [ 26.236756] R10: ffff8801cd7ae200 R11: ffffed0039742c8c R12: 0000000001000002 [ 26.237711] R13: ffff8801cb806900 R14: ffffffff85341ae0 R15: 0000000000000c0b [ 26.238677] FS: 0000000000000000(0000) GS:ffff8801db400000(0063) knlGS:00000000f4f3eb40 [ 26.239808] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 26.240614] CR2: fffffbfff1a68546 CR3: 00000001cbed1000 CR4: 00000000001406f0 [ 26.241569] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 26.242521] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 26.247821] Call Trace: [ 26.250383] ? timers_start+0x14c/0x1c0 [ 26.254339] traverse+0x248/0xa00 [ 26.257780] ? seq_hlist_next+0xc0/0xc0 [ 26.261728] seq_read+0x96a/0x13d0 [ 26.265239] ? __fget+0xbb/0x580 [ 26.268587] ? seq_lseek+0x3c0/0x3c0 [ 26.272269] ? selinux_file_permission+0x82/0x460 [ 26.277079] ? security_file_permission+0x89/0x1f0 [ 26.281975] ? rw_verify_area+0xe5/0x2b0 [ 26.286002] do_iter_read+0x3db/0x5b0 [ 26.289770] ? iov_iter_get_pages+0x1150/0x1150 [ 26.294412] compat_readv+0x1bf/0x270 [ 26.298181] ? vfs_iter_read+0xb0/0xb0 [ 26.302039] ? fget_raw+0x20/0x20 [ 26.305465] ? vmacache_find+0x5f/0x280 [ 26.309406] ? vmacache_update+0xfe/0x130 [ 26.314046] do_compat_preadv64+0xdc/0x100 [ 26.319810] ? do_compat_preadv64+0xdc/0x100 [ 26.324186] compat_SyS_preadv+0x3b/0x50 [ 26.328213] ? compat_SyS_preadv64+0x40/0x40 [ 26.332589] do_fast_syscall_32+0x3ee/0xf9d [ 26.336880] ? do_int80_syscall_32+0x9d0/0x9d0 [ 26.341433] ? lockdep_sys_exit+0x47/0xf0 [ 26.345563] ? syscall_return_slowpath+0x2ad/0x550 [ 26.350462] ? lockdep_sys_exit+0x47/0xf0 [ 26.354578] ? retint_user+0x18/0x18 [ 26.358260] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 26.363073] entry_SYSENTER_compat+0x51/0x60 [ 26.367450] RIP: 0023:0xf7f48c79 [ 26.370779] RSP: 002b:00000000f4f3e15c EFLAGS: 00000292 ORIG_RAX: 000000000000014d [ 26.378454] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 0000000020f40000 [ 26.385697] RDX: 0000000000000004 RSI: 0000000002000004 RDI: 0000000000000000 [ 26.392931] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 26.400165] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 26.407399] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 26.414643] Code: 89 c7 4c 0f 44 f1 41 83 e4 fb 4d 63 e4 e8 62 27 a3 ff 4a 8d 3c e5 20 2a 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 2a 34 85 4c 89 ef [ 26.433715] RIP: show_timer+0x1c7/0x2b0 RSP: ffff8801cba5f840 [ 26.440438] CR2: fffffbfff1a68546 [ 26.443862] ---[ end trace c18c62df01f1b65f ]--- [ 26.448580] Kernel panic - not syncing: Fatal exception [ 27.531071] Shutting down cpus with NMI [ 27.535956] Dumping ftrace buffer: [ 27.539554] (ftrace buffer empty) [ 27.543243] Kernel Offset: disabled [ 27.546840] Rebooting in 86400 seconds..