[?25l[?1c7[ ok 8[?25h[?0c. Starting mcstransd: [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. [ 19.078966] audit: type=1400 audit(1517411955.156:6): avc: denied { map } for pid=4146 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 Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.58' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program executing program executing program syzkaller login: [ 25.374721] audit: type=1400 audit(1517411961.452:7): avc: denied { map } for pid=4160 comm="syzkaller680843" path="/root/syzkaller680843200" 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 [ 25.638132] kasan: CONFIG_KASAN_INLINE enabled [ 25.642774] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 25.650150] general protection fault: 0000 [#1] SMP KASAN [ 25.655673] Dumping ftrace buffer: [ 25.659182] (ftrace buffer empty) [ 25.662865] Modules linked in: [ 25.666034] CPU: 1 PID: 4198 Comm: syzkaller680843 Not tainted 4.15.0+ #288 [ 25.673200] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 25.682541] RIP: 0010:pppol2tp_connect+0x10a3/0x1dd0 [ 25.687626] RSP: 0018:ffff8801b1a87af0 EFLAGS: 00010202 [ 25.692961] RAX: dffffc0000000000 RBX: ffff8801b1757100 RCX: ffffffff85128a00 [ 25.700199] RDX: 0000000000000045 RSI: 000000007a5bf5da RDI: 0000000000000228 [ 25.707439] RBP: ffff8801b1a87d70 R08: 1ffff10036350e9f R09: 0000000000000002 [ 25.714677] R10: ffff8801b1a879c0 R11: 0000000000000000 R12: ffff8801ae952480 [ 25.721917] R13: ffff8801b1a87d48 R14: 0000000000000000 R15: ffff8801b1a87c28 [ 25.729157] FS: 0000000001c2c880(0000) GS:ffff8801db500000(0000) knlGS:0000000000000000 [ 25.737350] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 25.743204] CR2: 00000000205fafd2 CR3: 00000001ae64e001 CR4: 00000000001606e0 [ 25.750447] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 25.757689] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 25.764928] Call Trace: [ 25.767504] ? pppol2tp_recv_payload_hook+0x1b0/0x1b0 [ 25.772667] ? selinux_netlbl_socket_connect+0x76/0x1b0 [ 25.778004] ? selinux_socket_connect+0x311/0x730 [ 25.782826] ? lock_downgrade+0x980/0x980 [ 25.786948] ? lock_downgrade+0x980/0x980 [ 25.791092] ? selinux_socket_setsockopt+0x80/0x80 [ 25.795994] ? lock_release+0xa40/0xa40 [ 25.799942] ? trace_event_raw_event_sched_switch+0x800/0x800 [ 25.805797] ? __check_object_size+0x25d/0x4f0 [ 25.810354] ? handle_mm_fault+0x410/0x8d0 [ 25.814565] ? __might_sleep+0x95/0x190 [ 25.818516] ? security_socket_connect+0x89/0xb0 [ 25.823244] SYSC_connect+0x213/0x4a0 [ 25.827022] ? SYSC_bind+0x410/0x410 [ 25.830709] ? do_page_fault+0xee/0x720 [ 25.834655] ? __do_page_fault+0xc90/0xc90 [ 25.838866] ? sock_map_fd+0x53/0x90 [ 25.842548] ? SyS_socket+0x12d/0x1d0 [ 25.846319] ? entry_SYSCALL_64_fastpath+0x5/0xa0 [ 25.851139] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 25.856129] SyS_connect+0x24/0x30 [ 25.859648] entry_SYSCALL_64_fastpath+0x29/0xa0 [ 25.864372] RIP: 0033:0x441739 [ 25.867534] RSP: 002b:00007ffc994b70c8 EFLAGS: 00000207 ORIG_RAX: 000000000000002a [ 25.875210] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000441739 [ 25.882455] RDX: 000000000000002e RSI: 00000000205fafd2 RDI: 0000000000000004 [ 25.889698] RBP: 00000000006cf720 R08: 0000000000000000 R09: 0000000000000000 [ 25.896947] R10: 0000000000000000 R11: 0000000000000207 R12: 00007ffc994b70f0 [ 25.904186] R13: 0000000000000000 R14: 00000000006d00a8 R15: 0000000000000025 [ 25.911444] Code: fe ff ff e8 c0 05 5e 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 [ 25.930542] RIP: pppol2tp_connect+0x10a3/0x1dd0 RSP: ffff8801b1a87af0 [ 25.937154] ---[ end trace 844e0f0a69c57b98 ]--- [ 25.941911] Kernel panic - not syncing: Fatal exception [ 25.947747] Dumping ftrace buffer: [ 25.951261] (ftrace buffer empty) [ 25.954942] Kernel Offset: disabled [ 25.958547] Rebooting in 86400 seconds..