[....] Starting enhanced syslogd: rsyslogd[ 16.510048] audit: type=1400 audit(1521352241.567:5): 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: [ 22.519116] audit: type=1400 audit(1521352247.576:6): 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 '10.128.0.9' (ECDSA) to the list of known hosts. executing program [ 35.025696] audit: type=1400 audit(1521352260.083:7): avc: denied { map } for pid=4238 comm="syzkaller152445" path="/root/syzkaller152445350" 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 [ 40.416404] kasan: CONFIG_KASAN_INLINE enabled [ 40.421161] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 40.428735] general protection fault: 0000 [#1] SMP KASAN [ 40.434252] Dumping ftrace buffer: [ 40.437765] (ftrace buffer empty) [ 40.441450] Modules linked in: [ 40.444616] CPU: 0 PID: 4238 Comm: syzkaller152445 Not tainted 4.16.0-rc5+ #267 [ 40.452055] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 40.461393] RIP: 0010:kernel_sock_shutdown+0x29/0x70 [ 40.466466] RSP: 0018:ffff8801aff1fc78 EFLAGS: 00010206 [ 40.471808] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff845ff6f4 [ 40.479056] RDX: 0000000000000005 RSI: 0000000000000000 RDI: 0000000000000028 [ 40.486297] RBP: ffff8801aff1fc90 R08: 0000000000000000 R09: 1ffff10035fe3f0b [ 40.493537] R10: ffff8801aff1f820 R11: 0000000000000001 R12: ffff8801b148c7d2 [ 40.500784] R13: 0000000000000000 R14: 0000000000000000 R15: ffff8801aff1fd08 [ 40.508037] FS: 0000000000000000(0000) GS:ffff8801db200000(0063) knlGS:0000000009307840 [ 40.516237] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 40.522096] CR2: ffffffffff600400 CR3: 00000001afd73001 CR4: 00000000001606f0 [ 40.529343] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 40.536586] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 40.543830] Call Trace: [ 40.546403] smc_shutdown+0x3ed/0x540 [ 40.550186] SyS_shutdown+0x137/0x290 [ 40.553962] ? SyS_getsockopt+0x340/0x340 [ 40.558087] ? trace_event_raw_event_sys_exit+0x260/0x260 [ 40.563599] ? do_fast_syscall_32+0x156/0xf9f [ 40.568074] ? SyS_getsockopt+0x340/0x340 [ 40.572197] do_fast_syscall_32+0x3ec/0xf9f [ 40.576498] ? do_int80_syscall_32+0x9c0/0x9c0 [ 40.581056] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 40.585793] ? syscall_return_slowpath+0x550/0x550 [ 40.590710] ? syscall_return_slowpath+0x2ac/0x550 [ 40.595619] ? prepare_exit_to_usermode+0x350/0x350 [ 40.600611] ? sysret32_from_system_call+0x5/0x3c [ 40.605431] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 40.610254] entry_SYSENTER_compat+0x70/0x7f [ 40.614636] RIP: 0023:0xf7f52c99 [ 40.617976] RSP: 002b:00000000ffc251dc EFLAGS: 00000217 ORIG_RAX: 0000000000000175 [ 40.625657] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000000000 [ 40.632901] RDX: 0000000000000000 RSI: 000000000000016b RDI: 0000000000000003 [ 40.640145] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 40.647392] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 40.654638] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 40.661899] 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 [ 40.681027] RIP: kernel_sock_shutdown+0x29/0x70 RSP: ffff8801aff1fc78 [ 40.687678] ---[ end trace 1bc435c2614e5d17 ]--- [ 40.692436] Kernel panic - not syncing: Fatal exception [ 40.698168] Dumping ftrace buffer: [ 40.701690] (ftrace buffer empty) [ 40.705380] Kernel Offset: disabled [ 40.708981] Rebooting in 86400 seconds..