[....] Starting enhanced syslogd: rsyslogd[ 12.038592] audit: type=1400 audit(1514767959.999:4): avc: denied { syslog } for pid=3165 comm="rsyslogd" capability=34 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=capability2 permissive=1 [?25l[?1c7[ ok 8[?25h[?0c. [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. Starting mcstransd: [....] Starting file context maintaining daemon: restorecond[?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 '10.128.0.61' (ECDSA) to the list of known hosts. 2018/01/01 00:52:47 parsed 1 programs 2018/01/01 00:52:47 executed programs: 0 syzkaller login: [ 19.281828] IPVS: Creating netns size=2536 id=1 [ 19.293469] IPVS: Creating netns size=2536 id=2 [ 19.304615] IPVS: Creating netns size=2536 id=3 [ 19.363237] IPVS: Creating netns size=2536 id=4 [ 19.398596] IPVS: Creating netns size=2536 id=5 [ 19.450169] IPVS: Creating netns size=2536 id=6 [ 19.484311] IPVS: Creating netns size=2536 id=7 [ 19.516455] IPVS: Creating netns size=2536 id=8 2018/01/01 00:52:52 executed programs: 671 [ 25.578120] kasan: CONFIG_KASAN_INLINE enabled [ 25.584905] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 25.612881] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 25.619152] Dumping ftrace buffer: [ 25.622684] (ftrace buffer empty) [ 25.626372] Modules linked in: [ 25.629653] CPU: 1 PID: 5941 Comm: syz-executor1 Not tainted 4.9.73-gf3f3457 #1 [ 25.637066] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 25.646404] task: ffff8801d8fa0000 task.stack: ffff8801d88e8000 [ 25.652447] RIP: 0010:[] [] sg_remove_scat.isra.19+0x17b/0x2d0 [ 25.661731] RSP: 0018:ffff8801d88efa20 EFLAGS: 00010202 [ 25.667146] RAX: 1ffff1003b12844d RBX: ffff8801d8942258 RCX: 0000000000000002 [ 25.674381] RDX: 0000000000000010 RSI: 0000000000000000 RDI: ffff8801d8f9211c [ 25.681616] RBP: ffff8801d88efa70 R08: 0000000000000000 R09: ffffed003876890d [ 25.688859] R10: 0000000000000005 R11: ffffed003876890c R12: 0000000000000002 [ 25.696096] R13: 0000000000000010 R14: 0000000000000000 R15: dffffc0000000000 [ 25.703332] FS: 00007f4fdb3c6700(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000 [ 25.711524] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 25.717394] CR2: 000000000071c000 CR3: 00000001d98dc000 CR4: 00000000001406e0 [ 25.724642] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 25.731894] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 25.739135] Stack: [ 25.741257] ffff8801d8942270 ffffed003b12844b ffffed003b12844e ffff8801d8942268 [ 25.749219] ffff8801d8f92100 ffff8801d8942240 0000000000000000 0000000000000000 [ 25.757182] 0000000000000000 ffff8801d8942338 ffff8801d88efab0 ffffffff82665385 [ 25.765143] Call Trace: [ 25.767710] [] sg_finish_rem_req+0x2b5/0x340 [ 25.773732] [] sg_read+0xa1c/0x1440 [ 25.778981] [] ? sg_proc_seq_show_debug+0xd10/0xd10 [ 25.785611] [] ? fsnotify+0xf30/0xf30 [ 25.791028] [] ? avc_policy_seqno+0x9/0x20 [ 25.796879] [] do_loop_readv_writev.part.17+0x141/0x1e0 [ 25.803856] [] ? security_file_permission+0x89/0x1e0 [ 25.810573] [] ? sg_proc_seq_show_debug+0xd10/0xd10 [ 25.817211] [] ? sg_proc_seq_show_debug+0xd10/0xd10 [ 25.823844] [] do_readv_writev+0x520/0x750 [ 25.829695] [] ? vfs_write+0x530/0x530 [ 25.835200] [] ? exit_robust_list+0x230/0x230 [ 25.841312] [] ? __fget+0x201/0x3a0 [ 25.846553] [] ? __fget+0x228/0x3a0 [ 25.851800] [] ? __fget+0x47/0x3a0 [ 25.856958] [] vfs_readv+0x84/0xc0 [ 25.862110] [] do_readv+0xe6/0x250 [ 25.867263] [] ? vfs_readv+0xc0/0xc0 [ 25.872592] [] ? entry_SYSCALL_64_fastpath+0x5/0xc6 [ 25.879226] [] ? trace_hardirqs_on_caller+0x38b/0x590 [ 25.886030] [] SyS_readv+0x27/0x30 [ 25.891183] [] entry_SYSCALL_64_fastpath+0x23/0xc6 [ 25.897723] Code: 45 b8 eb 3e e8 c7 44 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 [ 25.924223] RIP [] sg_remove_scat.isra.19+0x17b/0x2d0 [ 25.931166] RSP [ 25.936691] ---[ end trace d575b0367e4eb45a ]--- [ 25.942148] Kernel panic - not syncing: Fatal exception [ 25.947952] Dumping ftrace buffer: [ 25.951463] (ftrace buffer empty) [ 25.955138] Kernel Offset: disabled [ 25.958732] Rebooting in 86400 seconds..