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-android-49-kasan-gce-8,10.128.0.21' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 34.885199] kasan: CONFIG_KASAN_INLINE enabled [ 34.885935] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 34.886904] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 34.887725] Dumping ftrace buffer: [ 34.888212] (ftrace buffer empty) [ 34.888707] Modules linked in: [ 34.889172] CPU: 1 PID: 3238 Comm: syzkaller762866 Not tainted 4.9.60-gdfe0a9b #81 [ 34.890180] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 34.891402] task: ffff8801cf0d8000 task.stack: ffff8801c7d08000 [ 34.892217] RIP: 0010:[] [] sg_read+0xcc1/0x1400 [ 34.893305] RSP: 0018:ffff8801c7d0fac0 EFLAGS: 00010246 [ 34.894023] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 000000000000000c [ 34.894973] RDX: 0000000000000000 RSI: 00000000000000a8 RDI: ffff8801d5b14370 [ 34.895939] RBP: ffff8801c7d0fbc8 R08: 8551c99c2a45b4bd R09: ffffed003b351005 [ 34.896929] R10: 0000000000000005 R11: ffffed003b351004 R12: 0000000000001000 [ 34.897882] R13: 0000000000000000 R14: ffff8801d9a88000 R15: ffff8801d5b14340 [ 34.898849] FS: 0000000000c3f880(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000 [ 34.899921] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 34.900694] CR2: 00000000205f2f80 CR3: 00000001c76e3000 CR4: 00000000001406e0 [ 34.901645] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 34.902691] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 34.903680] Stack: [ 34.903982] ffff8801d5b6b040 ffff8801c7d0faf0 ffff8801d5b14358 ffff8801000000a8 [ 34.905148] 0000000000000000 ffff8801d5b14368 00000000000000cc 0000000000000246 [ 34.911700] ffff8801d1b9f180 1ffff10038fa1f64 00000000200c1000 00000000200c1024 [ 34.919660] Call Trace: [ 34.922221] [] ? sg_proc_seq_show_debug+0xd10/0xd10 [ 34.928861] [] ? fsnotify+0xf30/0xf30 [ 34.934291] [] ? avc_policy_seqno+0x9/0x20 [ 34.940144] [] do_loop_readv_writev.part.17+0x141/0x1e0 [ 34.947131] [] ? security_file_permission+0x89/0x1e0 [ 34.953852] [] ? sg_proc_seq_show_debug+0xd10/0xd10 [ 34.960494] [] ? sg_proc_seq_show_debug+0xd10/0xd10 [ 34.967142] [] do_readv_writev+0x520/0x750 [ 34.972996] [] ? vfs_write+0x4e0/0x4e0 [ 34.978508] [] ? __pmd_alloc+0x410/0x410 [ 34.984185] [] ? __do_page_fault+0x61a/0xd70 [ 34.990210] [] vfs_readv+0x84/0xc0 [ 34.995366] [] do_readv+0xe6/0x250 [ 35.000528] [] ? vfs_readv+0xc0/0xc0 [ 35.005863] [] ? entry_SYSCALL_64_fastpath+0x5/0xc6 [ 35.012494] [] ? trace_hardirqs_on_caller+0x38b/0x590 [ 35.019298] [] SyS_readv+0x27/0x30 [ 35.024452] [] entry_SYSCALL_64_fastpath+0x23/0xc6 [ 35.030993] Code: 00 00 00 00 00 fc ff df 48 c1 ea 03 80 3c 02 00 0f 85 19 07 00 00 48 b8 00 00 00 00 00 fc ff df 49 8b 5f 28 48 89 da 48 c1 ea 03 <80> 3c 02 00 0f 85 ed 06 00 00 48 8b 1b 48 85 db 0f 84 51 03 00 [ 35.057297] RIP [] sg_read+0xcc1/0x1400 [ 35.063002] RSP [ 35.066676] ---[ end trace db23c6e8b3c92a7f ]--- [ 35.071403] Kernel panic - not syncing: Fatal exception [ 35.076772] Dumping ftrace buffer: [ 35.080285] (ftrace buffer empty) [ 35.083967] Kernel Offset: disabled [ 35.087572] Rebooting in 86400 seconds..