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-2,10.128.15.201' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 25.164015] sg_write: data in/out 1562545400/3 bytes for SCSI command 0x0-- guessing data in; [ 25.164015] program syzkaller257712 not setting count and/or reply_len properly [ 25.167977] kasan: CONFIG_KASAN_INLINE enabled [ 25.168591] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 25.169558] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 25.170423] Dumping ftrace buffer: [ 25.170895] (ftrace buffer empty) [ 25.171423] Modules linked in: [ 25.171900] CPU: 1 PID: 3231 Comm: syzkaller257712 Not tainted 4.9.52-g9b2b081 #55 [ 25.172905] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 25.174123] task: ffff8801d5ec8000 task.stack: ffff8801d6560000 [ 25.174919] RIP: 0010:[] [] sg_read+0xcc1/0x1400 [ 25.176013] RSP: 0018:ffff8801d6567ac0 EFLAGS: 00010246 [ 25.176731] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 000000000000000c [ 25.177702] RDX: 0000000000000000 RSI: 0000000000000fdc RDI: ffff8801d9620170 [ 25.178652] RBP: ffff8801d6567bc8 R08: 0000000000000000 R09: ffffed003a0572c5 [ 25.179602] R10: 0000000000000005 R11: ffffed003a0572c4 R12: 0000000000001000 [ 25.180554] R13: 0000000000000000 R14: ffff8801d02b9600 R15: ffff8801d9620140 [ 25.181549] FS: 000000000153a880(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000 [ 25.182622] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 25.183394] CR2: 0000000020563000 CR3: 00000001c8620000 CR4: 00000000001406e0 [ 25.184356] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 25.191596] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 25.198833] Stack: [ 25.200945] ffffea00075959c0 ffff8801d6567b18 ffff8801d9620158 0000000000000fdc [ 25.208900] ffff8801d6567d50 ffff8801d9620168 0000000000001000 0000000000000246 [ 25.216842] ffff8801d1498000 1ffff1003acacf64 0000000020563000 0000000020563024 [ 25.224785] Call Trace: [ 25.227343] [] ? sg_proc_seq_show_debug+0xd10/0xd10 [ 25.233976] [] ? fsnotify+0xf30/0xf30 [ 25.239392] [] ? avc_policy_seqno+0x9/0x20 [ 25.245249] [] do_loop_readv_writev.part.17+0x141/0x1e0 [ 25.252232] [] ? security_file_permission+0x89/0x1e0 [ 25.258954] [] ? sg_proc_seq_show_debug+0xd10/0xd10 [ 25.265586] [] ? sg_proc_seq_show_debug+0xd10/0xd10 [ 25.272219] [] do_readv_writev+0x520/0x750 [ 25.278068] [] ? vfs_write+0x4e0/0x4e0 [ 25.283578] [] ? _raw_spin_unlock+0x2c/0x50 [ 25.289526] [] ? handle_mm_fault+0x6ee/0x2530 [ 25.295640] [] ? __pmd_alloc+0x410/0x410 [ 25.301323] [] ? security_file_permission+0x89/0x1e0 [ 25.308045] [] vfs_readv+0x84/0xc0 [ 25.313201] [] do_readv+0xe6/0x250 [ 25.318360] [] ? vfs_readv+0xc0/0xc0 [ 25.323691] [] ? __do_page_fault+0x33f/0xbd0 [ 25.329714] [] SyS_readv+0x27/0x30 [ 25.334876] [] entry_SYSCALL_64_fastpath+0x23/0xc6 [ 25.341423] 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 [ 25.367807] RIP [] sg_read+0xcc1/0x1400 [ 25.373511] RSP [ 25.377174] ---[ end trace ad23e15fcc5e587d ]--- [ 25.381927] Kernel panic - not syncing: Fatal exception [ 25.387559] Dumping ftrace buffer: [ 25.391069] (ftrace buffer empty) [ 25.394744] Kernel Offset: disabled [ 25.398338] Rebooting in 86400 seconds..