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-7,10.128.15.224' (ECDSA) to the list of known hosts. net.ipv6.conf.syz0.accept_dad = 0 net.ipv6.conf.syz0.router_solicitations = 0 executing program syzkaller login: [ 63.703047] IPVS: Creating netns size=2536 id=1 [ 63.773401] kasan: CONFIG_KASAN_INLINE enabled [ 63.779119] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 63.787547] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 63.793752] Dumping ftrace buffer: [ 63.797254] (ftrace buffer empty) [ 63.800932] Modules linked in: [ 63.804206] CPU: 1 PID: 3294 Comm: syzkaller880066 Not tainted 4.9.60-ge090755 #82 [ 63.811879] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 63.821198] task: ffff8801da314800 task.stack: ffff8801d8d20000 [ 63.827216] RIP: 0010:[] [] sg_read+0xcc1/0x1400 [ 63.835264] RSP: 0018:ffff8801d8d27ac0 EFLAGS: 00010246 [ 63.840673] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 000000000000000c [ 63.847907] RDX: 0000000000000000 RSI: 00000000000000c2 RDI: ffff8801d5a92270 [ 63.855140] RBP: ffff8801d8d27bc8 R08: 0000000000000000 R09: ffffed00398c4671 [ 63.862374] R10: 0000000000000005 R11: ffffed00398c4670 R12: 0000000000001000 [ 63.869607] R13: 0000000000000000 R14: ffff8801cc623360 R15: ffff8801d5a92240 [ 63.876841] FS: 00007f58954ab700(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000 [ 63.885029] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 63.890879] CR2: 0000000020001fdc CR3: 00000001da0ba000 CR4: 00000000001406e0 [ 63.898114] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 63.905346] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 63.912578] Stack: [ 63.914691] ffff8801d5b366c0 ffff8801d8d27af0 ffff8801d5a92258 ffff8801000000c2 [ 63.922644] 0000000000000000 ffff8801d5a92268 00000000000000e6 0000000000000246 [ 63.930580] ffff8801d1b6f400 1ffff1003b1a4f64 0000000020655000 0000000020655024 [ 63.938516] Call Trace: [ 63.941069] [] ? sg_proc_seq_show_debug+0xd10/0xd10 [ 63.947698] [] ? fsnotify+0xf30/0xf30 [ 63.953111] [] ? avc_policy_seqno+0x9/0x20 [ 63.958960] [] do_loop_readv_writev.part.17+0x141/0x1e0 [ 63.965938] [] ? security_file_permission+0x89/0x1e0 [ 63.972654] [] ? sg_proc_seq_show_debug+0xd10/0xd10 [ 63.979282] [] ? sg_proc_seq_show_debug+0xd10/0xd10 [ 63.985909] [] do_readv_writev+0x520/0x750 [ 63.991755] [] ? vfs_write+0x4e0/0x4e0 [ 63.997253] [] ? __fget+0x201/0x3a0 [ 64.002491] [] ? __fget+0x228/0x3a0 [ 64.007729] [] ? __fget+0x47/0x3a0 [ 64.012879] [] vfs_readv+0x84/0xc0 [ 64.018031] [] do_readv+0xe6/0x250 [ 64.023192] [] ? vfs_readv+0xc0/0xc0 [ 64.028522] [] ? entry_SYSCALL_64_fastpath+0x5/0xc6 [ 64.035149] [] ? trace_hardirqs_on_caller+0x38b/0x590 [ 64.041949] [] SyS_readv+0x27/0x30 [ 64.047101] [] entry_SYSCALL_64_fastpath+0x23/0xc6 [ 64.053639] 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 [ 64.079866] RIP [] sg_read+0xcc1/0x1400 [ 64.085566] RSP [ 64.089485] ---[ end trace 032e18d7a7f97e64 ]--- [ 64.094230] Kernel panic - not syncing: Fatal exception [ 64.099916] Dumping ftrace buffer: [ 64.103424] (ftrace buffer empty) [ 64.107097] Kernel Offset: disabled [ 64.110686] Rebooting in 86400 seconds..