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-1,10.128.15.213' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 41.032216] kasan: CONFIG_KASAN_INLINE enabled [ 41.032946] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 41.034251] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 41.035075] Dumping ftrace buffer: [ 41.035550] (ftrace buffer empty) [ 41.036043] Modules linked in: [ 41.036510] CPU: 0 PID: 3280 Comm: syzkaller657660 Not tainted 4.9.67-gf26d3c7 #106 [ 41.037527] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 41.038747] task: ffff8801ca7a0000 task.stack: ffff8801c9568000 [ 41.039569] RIP: 0010:[] [] sg_read+0xd0c/0x1440 [ 41.040651] RSP: 0018:ffff8801c956fac0 EFLAGS: 00010246 [ 41.041369] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 000000000000000c [ 41.042322] RDX: 0000000000000000 RSI: 000000000000006e RDI: ffff8801d6d98170 [ 41.043271] RBP: ffff8801c956fbc8 R08: b54c6d8b5ad7cb0c R09: ffffed003a01d4e9 [ 41.044220] R10: 0000000000000005 R11: ffffed003a01d4e8 R12: 0000000000001000 [ 41.045183] R13: 0000000000000000 R14: ffff8801d00ea720 R15: ffff8801d6d98140 [ 41.046136] FS: 0000000002134880(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000 [ 41.047210] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 41.047996] CR2: 0000000020188000 CR3: 00000001cd422000 CR4: 00000000001406f0 [ 41.048959] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 41.049912] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 41.050860] Stack: [ 41.051158] ffff8801d5525880 ffff8801c956faf0 ffff8801d6d98158 ffff88010000006e [ 41.052297] 0000000000000000 ffff8801d6d98168 0000000000000092 0000000000000246 [ 41.059877] ffff8801d1492280 1ffff100392adf64 0000000020188000 0000000020188024 [ 41.067823] Call Trace: [ 41.070377] [] ? sg_proc_seq_show_debug+0xd10/0xd10 [ 41.077009] [] ? fsnotify+0xf30/0xf30 [ 41.082423] [] ? avc_policy_seqno+0x9/0x20 [ 41.088271] [] do_loop_readv_writev.part.17+0x141/0x1e0 [ 41.095248] [] ? security_file_permission+0x89/0x1e0 [ 41.101965] [] ? sg_proc_seq_show_debug+0xd10/0xd10 [ 41.108595] [] ? sg_proc_seq_show_debug+0xd10/0xd10 [ 41.115222] [] do_readv_writev+0x520/0x750 [ 41.121071] [] ? vfs_write+0x530/0x530 [ 41.126572] [] ? do_vfs_ioctl+0x458/0x1140 [ 41.132420] [] ? ioctl_preallocate+0x220/0x220 [ 41.138616] [] ? selinux_file_ioctl+0x355/0x530 [ 41.144897] [] ? selinux_capable+0x40/0x40 [ 41.150767] [] vfs_readv+0x84/0xc0 [ 41.155920] [] do_readv+0xe6/0x250 [ 41.161429] [] ? vfs_readv+0xc0/0xc0 [ 41.166760] [] ? entry_SYSCALL_64_fastpath+0x5/0xc6 [ 41.173391] [] ? trace_hardirqs_on_caller+0x38b/0x590 [ 41.180194] [] SyS_readv+0x27/0x30 [ 41.185348] [] entry_SYSCALL_64_fastpath+0x23/0xc6 [ 41.191888] Code: 00 00 00 00 00 fc ff df 48 c1 ea 03 80 3c 02 00 0f 85 8a 06 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 df 05 00 00 48 8b 1b 48 85 db 0f 84 51 03 00 [ 41.218181] RIP [] sg_read+0xd0c/0x1440 [ 41.223890] RSP [ 41.227652] ---[ end trace d6b993408883e2d8 ]--- [ 41.232374] Kernel panic - not syncing: Fatal exception [ 41.237733] Dumping ftrace buffer: [ 41.241236] (ftrace buffer empty) [ 41.244911] Kernel Offset: disabled [ 41.248504] Rebooting in 86400 seconds..