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-7,10.128.0.44' (ECDSA) to the list of known hosts. 2017/10/13 20:52:24 parsed 1 programs 2017/10/13 20:52:24 executed programs: 0 syzkaller login: [ 41.122651] IPVS: Creating netns size=2536 id=1 [ 42.615445] kasan: CONFIG_KASAN_INLINE enabled [ 42.620044] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 42.627453] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 42.633736] Dumping ftrace buffer: [ 42.637240] (ftrace buffer empty) [ 42.640916] Modules linked in: [ 42.644188] CPU: 1 PID: 3905 Comm: syz-executor0 Not tainted 4.9.56-ged0b958 #65 [ 42.651697] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 42.661040] task: ffff8801cd409800 task.stack: ffff8801cde08000 [ 42.667064] RIP: 0010:[] [] sg_remove_scat.isra.20+0x17b/0x2d0 [ 42.676344] RSP: 0018:ffff8801cde0fb20 EFLAGS: 00010202 [ 42.681853] RAX: 1ffff10039a8302d RBX: ffff8801cd418158 RCX: 0000000000000002 [ 42.689105] RDX: 0000000000000010 RSI: 0000000000000000 RDI: ffff8801cddd421c [ 42.696341] RBP: ffff8801cde0fb70 R08: ffffed0039d4ca4c R09: ffff8801cea65240 [ 42.703574] R10: 0000000000000005 R11: ffffed0039d4ca4c R12: 0000000000000002 [ 42.710808] R13: 0000000000000010 R14: 0000000000000000 R15: dffffc0000000000 [ 42.718060] FS: 00007f378f3b8700(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000 [ 42.726337] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 42.732182] CR2: 00007f378f3b7db8 CR3: 00000001cdf2b000 CR4: 00000000001406e0 [ 42.739945] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 42.747281] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 42.754513] Stack: [ 42.756628] ffff8801cd418170 ffffed0039a8302b ffffed0039a8302e ffff8801cd418168 [ 42.764581] ffff8801cddd4200 ffff8801cd418140 0000000000000000 0000000000000000 [ 42.772537] 0000000000000000 ffff8801cd418238 ffff8801cde0fbb0 ffffffff82662c35 [ 42.780486] Call Trace: [ 42.783047] [] sg_finish_rem_req+0x2b5/0x340 [ 42.789069] [] sg_read+0x91c/0x1400 [ 42.794312] [] ? do_futex+0x3e8/0x1640 [ 42.799812] [] ? sg_proc_seq_show_debug+0xd10/0xd10 [ 42.806442] [] ? debug_check_no_locks_freed+0x2c0/0x2c0 [ 42.813419] [] ? sg_proc_seq_show_debug+0xd10/0xd10 [ 42.820048] [] __vfs_read+0x103/0x670 [ 42.825461] [] ? __kernel_write+0x340/0x340 [ 42.831398] [] ? fsnotify+0x86/0xf30 [ 42.836725] [] ? fsnotify+0xf30/0xf30 [ 42.842138] [] ? avc_policy_seqno+0x9/0x20 [ 42.847986] [] ? selinux_file_permission+0x82/0x460 [ 42.854617] [] ? security_file_permission+0x89/0x1e0 [ 42.861346] [] ? rw_verify_area+0xe5/0x2b0 [ 42.867197] [] vfs_read+0x107/0x330 [ 42.872437] [] SyS_read+0xd9/0x1b0 [ 42.877590] [] ? vfs_copy_file_range+0x740/0x740 [ 42.883964] [] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 42.890624] [] entry_SYSCALL_64_fastpath+0x23/0xc6 [ 42.897169] 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 [ 42.923624] RIP [] sg_remove_scat.isra.20+0x17b/0x2d0 [ 42.930554] RSP [ 42.934275] ---[ end trace 27f458566537c979 ]--- [ 42.939014] Kernel panic - not syncing: Fatal exception [ 42.944864] Dumping ftrace buffer: [ 42.948378] (ftrace buffer empty) [ 42.952054] Kernel Offset: disabled [ 42.956248] Rebooting in 86400 seconds..