[....] Starting enhanced syslogd: rsyslogd[ 16.693369] audit: type=1400 audit(1517448024.953:5): avc: denied { syslog } for pid=4006 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: [ 19.157055] audit: type=1400 audit(1517448027.416:6): 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 Warning: Permanently added '10.128.0.49' (ECDSA) to the list of known hosts. [ 25.459387] audit: type=1400 audit(1517448033.719:7): avc: denied { map } for pid=4160 comm="syzkaller116314" path="/root/syzkaller116314738" 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 [ 25.485468] audit: type=1400 audit(1517448033.723:8): avc: denied { sys_admin } for pid=4160 comm="syzkaller116314" capability=21 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=cap_userns permissive=1 [ 25.653075] IPVS: ftp: loaded support on port[0] = 21 [ 25.737411] audit: type=1400 audit(1517448033.997:9): avc: denied { sys_chroot } for pid=4161 comm="syzkaller116314" capability=18 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=cap_userns permissive=1 [ 25.761959] audit: type=1400 audit(1517448033.998:10): avc: denied { net_admin } for pid=4161 comm="syzkaller116314" capability=12 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=cap_userns 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 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 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 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 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 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 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 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 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 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 [ 31.271185] kasan: CONFIG_KASAN_INLINE enabled [ 31.275926] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 31.283314] general protection fault: 0000 [#1] SMP KASAN [ 31.288826] Dumping ftrace buffer: [ 31.292335] (ftrace buffer empty) [ 31.296014] Modules linked in: [ 31.299181] CPU: 0 PID: 5154 Comm: syzkaller116314 Not tainted 4.15.0+ #288 [ 31.306248] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 31.315668] RIP: 0010:pppol2tp_connect+0x10a3/0x1dd0 [ 31.320737] RSP: 0018:ffff8801ab4cfaf0 EFLAGS: 00010202 [ 31.326080] RAX: dffffc0000000000 RBX: ffff8801ce706e40 RCX: ffffffff85128a00 [ 31.333320] RDX: 0000000000000045 RSI: 00000000da049997 RDI: 0000000000000228 [ 31.340559] RBP: ffff8801ab4cfd70 R08: 1ffff10035699e9f R09: 0000000000000002 [ 31.347798] R10: ffff8801ab4cf9c0 R11: 0000000000000000 R12: ffff8801d82b8940 [ 31.355037] R13: ffff8801ab4cfd48 R14: 0000000000000000 R15: ffff8801ab4cfc28 [ 31.362279] FS: 0000000002456880(0000) GS:ffff8801db400000(0000) knlGS:0000000000000000 [ 31.370487] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 31.376336] CR2: 0000000020e77000 CR3: 00000001adca4004 CR4: 00000000001606f0 [ 31.383577] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 31.390816] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 31.398055] Call Trace: [ 31.400621] ? pppol2tp_recv_payload_hook+0x1b0/0x1b0 [ 31.405783] ? selinux_netlbl_socket_connect+0x76/0x1b0 [ 31.411118] ? selinux_socket_connect+0x311/0x730 [ 31.415935] ? lock_downgrade+0x980/0x980 [ 31.420050] ? lock_downgrade+0x980/0x980 [ 31.424169] ? selinux_socket_setsockopt+0x80/0x80 [ 31.429066] ? lock_release+0xa40/0xa40 [ 31.433011] ? trace_event_raw_event_sched_switch+0x800/0x800 [ 31.438865] ? __check_object_size+0x25d/0x4f0 [ 31.443419] ? handle_mm_fault+0x410/0x8d0 [ 31.447623] ? __might_sleep+0x95/0x190 [ 31.451573] ? security_socket_connect+0x89/0xb0 [ 31.456300] SYSC_connect+0x213/0x4a0 [ 31.460073] ? SYSC_bind+0x410/0x410 [ 31.463759] ? do_page_fault+0xee/0x720 [ 31.467704] ? __do_page_fault+0xc90/0xc90 [ 31.471911] ? sock_map_fd+0x53/0x90 [ 31.475597] ? SyS_socket+0x12d/0x1d0 [ 31.479367] ? entry_SYSCALL_64_fastpath+0x5/0xa0 [ 31.484189] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 31.489176] SyS_connect+0x24/0x30 [ 31.492701] entry_SYSCALL_64_fastpath+0x29/0xa0 [ 31.497425] RIP: 0033:0x441e69 [ 31.500583] RSP: 002b:00000000007ef988 EFLAGS: 00000207 ORIG_RAX: 000000000000002a [ 31.508258] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000441e69 [ 31.515498] RDX: 000000000000002e RSI: 0000000020e77000 RDI: 0000000000000004 [ 31.522746] RBP: 00000000007efa40 R08: 0000000000000000 R09: 0000000000000000 [ 31.529983] R10: 0000000000000000 R11: 0000000000000207 R12: 00000000007ef9e0 [ 31.537223] R13: 0000000000000000 R14: 00000000006d06c0 R15: 00000000000003df [ 31.544469] 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 [ 31.563539] RIP: pppol2tp_connect+0x10a3/0x1dd0 RSP: ffff8801ab4cfaf0 [ 31.570174] ---[ end trace a2dc7439ba080b12 ]--- [ 31.574921] Kernel panic - not syncing: Fatal exception [ 31.580777] Dumping ftrace buffer: [ 31.584287] (ftrace buffer empty) [ 31.587967] Kernel Offset: disabled [ 31.591562] Rebooting in 86400 seconds..