[....] Starting enhanced syslogd: rsyslogd[ 18.686269] audit: type=1400 audit(1521748277.768:5): avc: denied { syslog } for pid=4098 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: [ 23.500211] audit: type=1400 audit(1521748282.582:6): avc: denied { map } for pid=4237 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 '10.128.0.44' (ECDSA) to the list of known hosts. executing program [ 29.882147] audit: type=1400 audit(1521748288.963:7): avc: denied { map } for pid=4251 comm="syzkaller524912" path="/root/syzkaller524912085" 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 [ 35.295111] kasan: CONFIG_KASAN_INLINE enabled [ 35.299835] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 35.307409] general protection fault: 0000 [#1] SMP KASAN [ 35.312930] Dumping ftrace buffer: [ 35.316446] (ftrace buffer empty) [ 35.320134] Modules linked in: [ 35.323306] CPU: 1 PID: 4251 Comm: syzkaller524912 Not tainted 4.16.0-rc6+ #271 [ 35.330727] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 35.340062] RIP: 0010:kernel_sock_shutdown+0x29/0x70 [ 35.345136] RSP: 0018:ffff8801af5dfc78 EFLAGS: 00010206 [ 35.350472] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff846006f4 [ 35.357711] RDX: 0000000000000005 RSI: 0000000000000000 RDI: 0000000000000028 [ 35.364954] RBP: ffff8801af5dfc90 R08: 0000000000000000 R09: 1ffff10035ebbf0b [ 35.372200] R10: ffff8801af5df820 R11: 0000000000000001 R12: ffff8801b0daa7d2 [ 35.379438] R13: 0000000000000000 R14: 0000000000000000 R15: ffff8801af5dfd08 [ 35.386679] FS: 0000000000000000(0000) GS:ffff8801db300000(0063) knlGS:0000000008c96840 [ 35.394876] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 35.400729] CR2: 0000000000b87780 CR3: 00000001abfa9004 CR4: 00000000001606e0 [ 35.407974] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 35.415213] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 35.422453] Call Trace: [ 35.425026] smc_shutdown+0x3ed/0x540 [ 35.428803] SyS_shutdown+0x137/0x290 [ 35.432574] ? SyS_getsockopt+0x340/0x340 [ 35.436699] ? trace_event_raw_event_sys_exit+0x260/0x260 [ 35.442207] ? do_fast_syscall_32+0x156/0xf9f [ 35.446673] ? SyS_getsockopt+0x340/0x340 [ 35.450799] do_fast_syscall_32+0x3ec/0xf9f [ 35.455100] ? do_int80_syscall_32+0x9c0/0x9c0 [ 35.459656] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 35.464387] ? syscall_return_slowpath+0x550/0x550 [ 35.469316] ? syscall_return_slowpath+0x2ac/0x550 [ 35.474218] ? prepare_exit_to_usermode+0x350/0x350 [ 35.479204] ? sysret32_from_system_call+0x5/0x3c [ 35.484023] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 35.488842] entry_SYSENTER_compat+0x70/0x7f [ 35.493222] RIP: 0023:0xf7fc4c99 [ 35.496553] RSP: 002b:00000000ffca577c EFLAGS: 00000217 ORIG_RAX: 0000000000000175 [ 35.504227] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000000000 [ 35.511467] RDX: 0000000000000000 RSI: 000000000000016b RDI: 0000000000000003 [ 35.518708] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 35.525948] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 35.533194] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 35.540443] Code: 66 90 55 48 89 e5 41 55 41 54 53 48 89 fb 41 89 f5 e8 0c 12 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 [ 35.560482] RIP: kernel_sock_shutdown+0x29/0x70 RSP: ffff8801af5dfc78 [ 35.567097] ---[ end trace 01bc4215b63fce02 ]--- [ 35.571863] Kernel panic - not syncing: Fatal exception [ 35.577620] Dumping ftrace buffer: [ 35.581135] (ftrace buffer empty) [ 35.584818] Kernel Offset: disabled [ 35.588417] Rebooting in 86400 seconds..