[....] Starting enhanced syslogd: rsyslogd[ 16.365474] audit: type=1400 audit(1521276869.585:5): avc: denied { syslog } for pid=4088 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 mcstransd: [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 18.786896] audit: type=1400 audit(1521276872.006:6): avc: denied { map } for pid=4227 comm="bash" path="/bin/bash" dev="sda1" ino=1457 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:file_t:s0 tclass=file permissive=1 Warning: Permanently added '10.128.0.20' (ECDSA) to the list of known hosts. executing program [ 25.827158] audit: type=1400 audit(1521276879.046:7): avc: denied { map } for pid=4241 comm="syzkaller499698" path="/root/syzkaller499698736" dev="sda1" ino=16481 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 [ 31.199181] kasan: CONFIG_KASAN_INLINE enabled [ 31.203931] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 31.211355] general protection fault: 0000 [#1] SMP KASAN [ 31.216876] Dumping ftrace buffer: [ 31.220385] (ftrace buffer empty) [ 31.224065] Modules linked in: [ 31.227231] CPU: 1 PID: 4241 Comm: syzkaller499698 Not tainted 4.16.0-rc5+ #357 [ 31.234647] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 31.243985] RIP: 0010:kernel_sock_shutdown+0x29/0x70 [ 31.249064] RSP: 0018:ffff8801b0defcc8 EFLAGS: 00010206 [ 31.254407] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff845ff6f4 [ 31.261656] RDX: 0000000000000005 RSI: 0000000000000000 RDI: 0000000000000028 [ 31.268903] RBP: ffff8801b0defce0 R08: 0000000000000000 R09: 1ffff100361bdf15 [ 31.276146] R10: ffff8801b0def870 R11: 0000000000000001 R12: ffff8801b833e7d2 [ 31.283388] R13: 0000000000000000 R14: 0000000000000000 R15: ffff8801b0defd58 [ 31.290632] FS: 0000000002137880(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000 [ 31.298825] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 31.304674] CR2: 0000000001fd7e78 CR3: 00000001b1488004 CR4: 00000000001606e0 [ 31.311920] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 31.319158] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 31.326396] Call Trace: [ 31.328962] smc_shutdown+0x3ed/0x540 [ 31.332737] SyS_shutdown+0x137/0x290 [ 31.336508] ? SyS_getsockopt+0x340/0x340 [ 31.340631] ? trace_event_raw_event_sys_exit+0x260/0x260 [ 31.346138] ? do_syscall_64+0xb7/0x940 [ 31.350084] ? SyS_getsockopt+0x340/0x340 [ 31.354202] do_syscall_64+0x281/0x940 [ 31.358064] ? __do_page_fault+0xc90/0xc90 [ 31.362271] ? trace_event_raw_event_sys_exit+0x260/0x260 [ 31.367779] ? syscall_return_slowpath+0x550/0x550 [ 31.372679] ? syscall_return_slowpath+0x2ac/0x550 [ 31.377581] ? entry_SYSCALL_64_after_hwframe+0x52/0xb7 [ 31.382922] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 31.387737] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 31.392894] RIP: 0033:0x43fcb9 [ 31.396055] RSP: 002b:00007ffded02d4e8 EFLAGS: 00000217 ORIG_RAX: 0000000000000030 [ 31.403730] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 000000000043fcb9 [ 31.410972] RDX: 000000000043fcb9 RSI: 0000000000000000 RDI: 0000000000000003 [ 31.418217] RBP: 00000000006ca018 R08: 00000000004002c8 R09: 00000000004002c8 [ 31.425459] R10: 00000000004002c8 R11: 0000000000000217 R12: 00000000004015e0 [ 31.432706] R13: 0000000000401670 R14: 0000000000000000 R15: 0000000000000000 [ 31.439954] Code: 66 90 55 48 89 e5 41 55 41 54 53 48 89 fb 41 89 f5 e8 ac 20 11 fd 48 8d 7b 28 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 75 32 4c 8b 63 28 48 b8 00 00 00 00 00 fc ff df 49 [ 31.459042] RIP: kernel_sock_shutdown+0x29/0x70 RSP: ffff8801b0defcc8 [ 31.465690] ---[ end trace eee97be48af45fd0 ]--- [ 31.470451] Kernel panic - not syncing: Fatal exception [ 31.476134] Dumping ftrace buffer: [ 31.479654] (ftrace buffer empty) [ 31.483350] Kernel Offset: disabled [ 31.486958] Rebooting in 86400 seconds..