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-5,10.128.15.217' (ECDSA) to the list of known hosts. 2017/10/17 03:33:18 parsed 1 programs 2017/10/17 03:33:18 executed programs: 0 syzkaller login: [ 36.200872] kasan: CONFIG_KASAN_INLINE enabled [ 36.201640] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 36.202608] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 36.203444] Dumping ftrace buffer: [ 36.203916] (ftrace buffer empty) [ 36.204409] Modules linked in: [ 36.204876] CPU: 0 PID: 4921 Comm: syz-executor0 Not tainted 4.9.56-g5c73594 #66 [ 36.205875] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 36.207091] task: ffff8801cf3ae000 task.stack: ffff8801cf3f8000 [ 36.207895] RIP: 0010:[] [] sg_remove_scat.isra.20+0x17b/0x2d0 [ 36.209155] RSP: 0018:ffff8801cf3ffb20 EFLAGS: 00010202 [ 36.209872] RAX: 1ffff10039e7d02d RBX: ffff8801cf3e8158 RCX: 0000000000000002 [ 36.210955] RDX: 0000000000000010 RSI: 0000000000000000 RDI: ffff8801cf3cc21c [ 36.211903] RBP: ffff8801cf3ffb70 R08: ffffed0039af1a28 R09: ffff8801cd78d120 [ 36.212877] R10: 0000000000000005 R11: ffffed0039af1a28 R12: 0000000000000002 [ 36.213854] R13: 0000000000000010 R14: 0000000000000000 R15: dffffc0000000000 [ 36.214822] FS: 00007efdc1aec700(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000 [ 36.215897] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 36.216668] CR2: 00007efdc1aebdb8 CR3: 00000001cd791000 CR4: 00000000001406f0 [ 36.217619] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 36.218569] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 36.219521] Stack: [ 36.219831] ffff8801cf3e8170 ffffed0039e7d02b ffffed0039e7d02e ffff8801cf3e8168 [ 36.220963] ffff8801cf3cc200 ffff8801cf3e8140 0000000000000000 0000000000000000 [ 36.228985] 0000000000000000 ffff8801cf3e8238 ffff8801cf3ffbb0 ffffffff82662c35 [ 36.237028] Call Trace: [ 36.239595] [] sg_finish_rem_req+0x2b5/0x340 [ 36.245777] [] sg_read+0x91c/0x1400 [ 36.251026] [] ? do_futex+0x3e8/0x1640 [ 36.256531] [] ? sg_proc_seq_show_debug+0xd10/0xd10 [ 36.263162] [] ? debug_check_no_locks_freed+0x2c0/0x2c0 [ 36.270141] [] ? sg_proc_seq_show_debug+0xd10/0xd10 [ 36.276777] [] __vfs_read+0x103/0x670 [ 36.282201] [] ? debug_check_no_locks_freed+0x2c0/0x2c0 [ 36.289181] [] ? __kernel_write+0x340/0x340 [ 36.295118] [] ? fsnotify+0x86/0xf30 [ 36.300448] [] ? fsnotify+0xf30/0xf30 [ 36.305864] [] ? avc_policy_seqno+0x9/0x20 [ 36.311718] [] ? selinux_file_permission+0x82/0x460 [ 36.318349] [] ? security_file_permission+0x89/0x1e0 [ 36.325064] [] ? rw_verify_area+0xe5/0x2b0 [ 36.330914] [] vfs_read+0x107/0x330 [ 36.336156] [] SyS_read+0xd9/0x1b0 [ 36.341310] [] ? vfs_copy_file_range+0x740/0x740 [ 36.347683] [] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 36.354230] [] entry_SYSCALL_64_fastpath+0x23/0xc6 [ 36.360772] Code: 45 b8 eb 3e e8 17 82 d0 fe 48 8b 45 c8 48 c1 e8 03 42 80 3c 38 00 0f 85 3a 01 00 00 4c 8b 73 10 4b 8d 14 2e 48 89 d1 48 c1 e9 03 <42> 80 3c 39 00 0f 85 0b 01 00 00 48 8b 12 49 83 c5 08 48 85 d2 [ 36.387227] RIP [] sg_remove_scat.isra.20+0x17b/0x2d0 [ 36.394145] RSP [ 36.397867] ---[ end trace 4518b1faa10a553c ]--- [ 36.402624] Kernel panic - not syncing: Fatal exception [ 36.408335] Dumping ftrace buffer: [ 36.411843] (ftrace buffer empty) [ 36.415521] Kernel Offset: disabled [ 36.419117] Rebooting in 86400 seconds..