[....] Starting enhanced syslogd: rsyslogd[ 16.373642] audit: type=1400 audit(1520952179.731:5): avc: denied { syslog } for pid=3962 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: [ 22.703289] audit: type=1400 audit(1520952186.060:6): avc: denied { map } for pid=4102 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 '10.128.10.0' (ECDSA) to the list of known hosts. executing program [ 29.039189] audit: type=1400 audit(1520952192.396:7): avc: denied { map } for pid=4116 comm="syzkaller302920" path="/root/syzkaller302920576" 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 [ 34.271126] kasan: CONFIG_KASAN_INLINE enabled [ 34.275816] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 34.283206] general protection fault: 0000 [#1] SMP KASAN [ 34.288729] Dumping ftrace buffer: [ 34.292237] (ftrace buffer empty) [ 34.295918] Modules linked in: [ 34.299086] CPU: 0 PID: 4116 Comm: syzkaller302920 Not tainted 4.16.0-rc5+ #262 [ 34.306499] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 34.315828] RIP: 0010:kernel_sock_shutdown+0x29/0x70 [ 34.320898] RSP: 0018:ffff8801c8fc7c78 EFLAGS: 00010206 [ 34.326233] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff845ff6f4 [ 34.333483] RDX: 0000000000000005 RSI: 0000000000000000 RDI: 0000000000000028 [ 34.340730] RBP: ffff8801c8fc7c90 R08: 0000000000000000 R09: 1ffff100391f8f0b [ 34.347968] R10: ffff8801c8fc7820 R11: 0000000000000001 R12: ffff8801c97387d2 [ 34.355206] R13: 0000000000000000 R14: 0000000000000000 R15: ffff8801c8fc7d08 [ 34.362446] FS: 0000000000000000(0000) GS:ffff8801db200000(0063) knlGS:0000000008f7f840 [ 34.370640] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 34.376490] CR2: 00007fc680ae7000 CR3: 00000001c946f003 CR4: 00000000001606f0 [ 34.383732] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 34.390971] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 34.398210] Call Trace: [ 34.400778] smc_shutdown+0x3ed/0x540 [ 34.404551] SyS_shutdown+0x137/0x290 [ 34.408326] ? SyS_getsockopt+0x340/0x340 [ 34.412448] ? trace_event_raw_event_sys_exit+0x260/0x260 [ 34.417956] ? do_fast_syscall_32+0x156/0xf9f [ 34.422422] ? SyS_getsockopt+0x340/0x340 [ 34.426539] do_fast_syscall_32+0x3ec/0xf9f [ 34.430832] ? do_int80_syscall_32+0x9c0/0x9c0 [ 34.435384] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 34.440113] ? syscall_return_slowpath+0x550/0x550 [ 34.445028] ? syscall_return_slowpath+0x2ac/0x550 [ 34.449931] ? prepare_exit_to_usermode+0x350/0x350 [ 34.454920] ? sysret32_from_system_call+0x5/0x3c [ 34.459734] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 34.464550] entry_SYSENTER_compat+0x70/0x7f [ 34.468934] RIP: 0023:0xf7f72c99 [ 34.472266] RSP: 002b:00000000ff8836ec EFLAGS: 00000217 ORIG_RAX: 0000000000000175 [ 34.479944] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000000000 [ 34.487192] RDX: 0000000000000000 RSI: 000000000000016b RDI: 0000000000000003 [ 34.494432] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 34.501673] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 34.508912] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 34.516160] 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 [ 34.535317] RIP: kernel_sock_shutdown+0x29/0x70 RSP: ffff8801c8fc7c78 [ 34.541952] ---[ end trace dfbb6adb7f7cc449 ]--- [ 34.546701] Kernel panic - not syncing: Fatal exception [ 34.552496] Dumping ftrace buffer: [ 34.556017] (ftrace buffer empty) [ 34.559701] Kernel Offset: disabled [ 34.563301] Rebooting in 86400 seconds..