[....] Starting enhanced syslogd: rsyslogd[ 16.895675] audit: type=1400 audit(1520562771.701:5): avc: denied { syslog } for pid=4092 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 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 syzkaller login: [ 22.507390] audit: type=1400 audit(1520562777.313:6): avc: denied { map } for pid=4232 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 '10.128.0.6' (ECDSA) to the list of known hosts. executing program [ 28.808648] audit: type=1400 audit(1520562783.614:7): avc: denied { map } for pid=4246 comm="syzkaller294807" path="/root/syzkaller294807447" 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 [ 34.271138] kasan: CONFIG_KASAN_INLINE enabled [ 34.275830] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 34.283371] general protection fault: 0000 [#1] SMP KASAN [ 34.288891] Dumping ftrace buffer: [ 34.292402] (ftrace buffer empty) [ 34.296083] Modules linked in: [ 34.299246] CPU: 1 PID: 4246 Comm: syzkaller294807 Not tainted 4.16.0-rc4+ #256 [ 34.306659] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 34.315992] RIP: 0010:kernel_sock_shutdown+0x29/0x70 [ 34.321066] RSP: 0018:ffff8801b17f7c78 EFLAGS: 00010206 [ 34.326397] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff845fc6f4 [ 34.333636] RDX: 0000000000000005 RSI: 0000000000000000 RDI: 0000000000000028 [ 34.340875] RBP: ffff8801b17f7c90 R08: 0000000000000000 R09: 1ffff100362fef0b [ 34.348115] R10: ffff8801b17f7820 R11: 0000000000000001 R12: ffff8801b16ba7d2 [ 34.355356] R13: 0000000000000000 R14: 0000000000000000 R15: ffff8801b17f7d08 [ 34.362594] FS: 0000000000000000(0000) GS:ffff8801db300000(0063) knlGS:0000000009b5d840 [ 34.370791] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 34.376641] CR2: 00007f914cb98000 CR3: 00000001b0d5d003 CR4: 00000000001606e0 [ 34.383884] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 34.391124] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 34.398363] Call Trace: [ 34.400926] smc_shutdown+0x3ed/0x540 [ 34.404714] SyS_shutdown+0x137/0x290 [ 34.408486] ? SyS_getsockopt+0x340/0x340 [ 34.412606] ? trace_event_raw_event_sys_exit+0x260/0x260 [ 34.418119] ? do_fast_syscall_32+0x156/0xf9f [ 34.422586] ? SyS_getsockopt+0x340/0x340 [ 34.426702] do_fast_syscall_32+0x3ec/0xf9f [ 34.430994] ? do_int80_syscall_32+0x9c0/0x9c0 [ 34.435549] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 34.440276] ? syscall_return_slowpath+0x550/0x550 [ 34.445174] ? syscall_return_slowpath+0x2ac/0x550 [ 34.450071] ? prepare_exit_to_usermode+0x350/0x350 [ 34.455055] ? sysret32_from_system_call+0x5/0x3c [ 34.459869] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 34.464683] entry_SYSENTER_compat+0x70/0x7f [ 34.469061] RIP: 0023:0xf7f87c99 [ 34.472396] RSP: 002b:00000000ffea5b0c EFLAGS: 00000217 ORIG_RAX: 0000000000000175 [ 34.480071] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000000000 [ 34.487308] RDX: 0000000000000000 RSI: 000000000000016b RDI: 0000000000000003 [ 34.494549] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 34.501787] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 34.509030] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 34.516277] Code: 66 90 55 48 89 e5 41 55 41 54 53 48 89 fb 41 89 f5 e8 1c 3f 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 [ 34.535349] RIP: kernel_sock_shutdown+0x29/0x70 RSP: ffff8801b17f7c78 [ 34.541962] ---[ end trace 6e91d3f84cc22cbf ]--- [ 34.546717] Kernel panic - not syncing: Fatal exception [ 34.552481] Dumping ftrace buffer: [ 34.555997] (ftrace buffer empty) [ 34.559678] Kernel Offset: disabled [ 34.563273] Rebooting in 86400 seconds..