[....] Starting enhanced syslogd: rsyslogd[ 17.159392] audit: type=1400 audit(1519639733.970:5): avc: denied { syslog } for pid=4082 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 syzkaller login: [ 22.937252] audit: type=1400 audit(1519639739.748:6): avc: denied { map } for pid=4222 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 '10.128.15.208' (ECDSA) to the list of known hosts. executing program [ 29.275418] audit: type=1400 audit(1519639746.086:7): avc: denied { map } for pid=4236 comm="syzkaller482898" path="/root/syzkaller482898549" 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 [ 34.783181] kasan: CONFIG_KASAN_INLINE enabled [ 34.787960] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 34.795356] general protection fault: 0000 [#1] SMP KASAN [ 34.800875] Dumping ftrace buffer: [ 34.804383] (ftrace buffer empty) [ 34.808061] Modules linked in: [ 34.811224] CPU: 1 PID: 4236 Comm: syzkaller482898 Not tainted 4.16.0-rc2+ #329 [ 34.818636] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 34.827964] RIP: 0010:kernel_sock_shutdown+0x29/0x70 [ 34.833031] RSP: 0018:ffff8801ae7a7cc8 EFLAGS: 00010206 [ 34.838364] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff846026f4 [ 34.845602] RDX: 0000000000000005 RSI: 0000000000000000 RDI: 0000000000000028 [ 34.852840] RBP: ffff8801ae7a7ce0 R08: 0000000000000000 R09: 1ffff10035cf4f15 [ 34.860080] R10: ffff8801ae7a7870 R11: 0000000000000001 R12: ffff8801b16857d2 [ 34.867326] R13: 0000000000000000 R14: 0000000000000000 R15: ffff8801ae7a7d58 [ 34.874566] FS: 000000000115b880(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000 [ 34.882760] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 34.888611] CR2: 00007f1f7aed8000 CR3: 00000001b1583005 CR4: 00000000001606e0 [ 34.895864] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 34.903110] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 34.910356] Call Trace: [ 34.912918] smc_shutdown+0x3ed/0x540 [ 34.916691] SyS_shutdown+0x137/0x290 [ 34.920463] ? SyS_getsockopt+0x340/0x340 [ 34.924589] ? trace_event_raw_event_sys_exit+0x260/0x260 [ 34.930094] ? do_syscall_64+0xb6/0x940 [ 34.934039] ? SyS_getsockopt+0x340/0x340 [ 34.938160] do_syscall_64+0x280/0x940 [ 34.942021] ? __do_page_fault+0xc90/0xc90 [ 34.946230] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 34.950957] ? syscall_return_slowpath+0x550/0x550 [ 34.955858] ? syscall_return_slowpath+0x2ac/0x550 [ 34.960755] ? prepare_exit_to_usermode+0x350/0x350 [ 34.965742] ? entry_SYSCALL_64_after_hwframe+0x52/0xb7 [ 34.971077] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 34.975892] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 34.981051] RIP: 0033:0x43fcb9 [ 34.984210] RSP: 002b:00007ffdb33d2bd8 EFLAGS: 00000217 ORIG_RAX: 0000000000000030 [ 34.991887] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 000000000043fcb9 [ 34.999128] RDX: 000000000043fcb9 RSI: 0000000000000000 RDI: 0000000000000003 [ 35.006370] RBP: 00000000006ca018 R08: 00000000004002c8 R09: 00000000004002c8 [ 35.013612] R10: 00000000004002c8 R11: 0000000000000217 R12: 00000000004015e0 [ 35.020849] R13: 0000000000401670 R14: 0000000000000000 R15: 0000000000000000 [ 35.028094] Code: 66 90 55 48 89 e5 41 55 41 54 53 48 89 fb 41 89 f5 e8 ac e5 10 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 [ 35.047165] RIP: kernel_sock_shutdown+0x29/0x70 RSP: ffff8801ae7a7cc8 [ 35.053777] ---[ end trace 20c1b7e7106b13d2 ]--- [ 35.058530] Kernel panic - not syncing: Fatal exception [ 35.064276] Dumping ftrace buffer: [ 35.067787] (ftrace buffer empty) [ 35.071464] Kernel Offset: disabled [ 35.075060] Rebooting in 86400 seconds..