[....] Starting enhanced syslogd: rsyslogd[ 12.852671] audit: type=1400 audit(1516057214.689:5): avc: denied { syslog } for pid=3493 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 OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 17.943664] audit: type=1400 audit(1516057219.780:6): avc: denied { map } for pid=3632 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 '10.128.15.226' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program executing program [ 28.494219] audit: type=1400 audit(1516057230.331:7): avc: denied { map } for pid=3647 comm="syzkaller385366" path="/root/syzkaller385366445" 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 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 29.093117] kasan: CONFIG_KASAN_INLINE enabled [ 29.097876] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 29.105262] general protection fault: 0000 [#1] SMP KASAN [ 29.110792] Dumping ftrace buffer: [ 29.114304] (ftrace buffer empty) [ 29.118000] Modules linked in: [ 29.121291] CPU: 1 PID: 3861 Comm: syzkaller385366 Not tainted 4.15.0-rc8+ #263 [ 29.128719] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 29.138069] RIP: 0010:pppol2tp_connect+0x10a3/0x1dd0 [ 29.143141] RSP: 0018:ffff8801d95a7af0 EFLAGS: 00010202 [ 29.148489] RAX: dffffc0000000000 RBX: ffff8801bba1c000 RCX: ffffffff85024060 [ 29.155745] RDX: 0000000000000045 RSI: 000000004f52b9e1 RDI: 0000000000000228 [ 29.162989] RBP: ffff8801d95a7d70 R08: 1ffff1003b2b4e9f R09: 0000000000000002 [ 29.170235] R10: ffff8801d95a79c0 R11: 0000000000000000 R12: ffff8801d97b7200 [ 29.177479] R13: ffff8801d95a7d48 R14: 0000000000000000 R15: ffff8801d95a7c28 [ 29.184722] FS: 00007f69705ea700(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000 [ 29.192922] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 29.198776] CR2: 00000000205fafd2 CR3: 00000001bc600006 CR4: 00000000001606e0 [ 29.206021] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 29.213263] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 29.220505] Call Trace: [ 29.223068] ? pppol2tp_recv_payload_hook+0x1b0/0x1b0 [ 29.228238] ? selinux_netlbl_socket_connect+0x76/0x1b0 [ 29.233577] ? selinux_socket_connect+0x311/0x730 [ 29.238405] ? lock_downgrade+0x980/0x980 [ 29.242614] ? selinux_socket_setsockopt+0x80/0x80 [ 29.247514] ? lock_release+0xa40/0xa40 [ 29.251475] ? trace_event_raw_event_sched_switch+0x800/0x800 [ 29.257333] ? __check_object_size+0x25d/0x4f0 [ 29.261896] ? handle_mm_fault+0x410/0x8d0 [ 29.266103] ? __might_sleep+0x95/0x190 [ 29.270066] ? security_socket_connect+0x89/0xb0 [ 29.274796] SYSC_connect+0x213/0x4a0 [ 29.278571] ? SYSC_bind+0x410/0x410 [ 29.282260] ? do_page_fault+0xee/0x720 [ 29.286208] ? __do_page_fault+0xc90/0xc90 [ 29.290426] ? do_futex+0x22a0/0x22a0 [ 29.294197] ? SyS_socket+0x12d/0x1d0 [ 29.297971] ? entry_SYSCALL_64_fastpath+0x5/0xa0 [ 29.302798] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 29.307787] SyS_connect+0x24/0x30 [ 29.311300] entry_SYSCALL_64_fastpath+0x29/0xa0 [ 29.316039] RIP: 0033:0x445bd9 [ 29.319198] RSP: 002b:00007f69705e9db8 EFLAGS: 00000297 ORIG_RAX: 000000000000002a [ 29.326877] RAX: ffffffffffffffda RBX: 00000000006dac24 RCX: 0000000000445bd9 [ 29.336899] RDX: 000000000000002e RSI: 00000000205fafd2 RDI: 0000000000000004 [ 29.344155] RBP: 00000000006dac20 R08: 0000000000000000 R09: 0000000000000000 [ 29.351407] R10: 0000000000000000 R11: 0000000000000297 R12: 0000000000000000 [ 29.358651] R13: 00007ffe472febaf R14: 00007f69705ea9c0 R15: 0000000000000001 [ 29.365900] Code: fe ff ff e8 60 d7 6d fc 4c 89 fa 49 8d be 28 02 00 00 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 c6 04 02 00 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 e5 09 00 00 4c 89 fa 48 b8 00 00 00 00 00 fc [ 29.384967] RIP: pppol2tp_connect+0x10a3/0x1dd0 RSP: ffff8801d95a7af0 [ 29.391757] ---[ end trace f53b0a5c4dc1a12b ]--- [ 29.396568] Kernel panic - not syncing: Fatal exception [ 29.401942] Dumping ftrace buffer: [ 29.405480] (ftrace buffer empty) [ 29.409178] Kernel Offset: disabled [ 29.412779] Rebooting in 86400 seconds..