[....] Starting enhanced syslogd: rsyslogd[ 16.164794] audit: type=1400 audit(1519451546.774:5): avc: denied { syslog } for pid=4092 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: [ 19.378260] audit: type=1400 audit(1519451549.988:6): avc: denied { map } for pid=4230 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 '10.128.0.15' (ECDSA) to the list of known hosts. [ 25.698558] audit: type=1400 audit(1519451556.308:7): avc: denied { map } for pid=4244 comm="syzkaller137663" path="/root/syzkaller137663813" 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 [ 25.722436] IPVS: ftp: loaded support on port[0] = 21 [ 25.724505] audit: type=1400 audit(1519451556.308:8): avc: denied { sys_admin } for pid=4250 comm="syzkaller137663" 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 [ 25.763195] IPVS: ftp: loaded support on port[0] = 21 executing program [ 25.778133] audit: type=1400 audit(1519451556.385:9): avc: denied { sys_chroot } for pid=4254 comm="syzkaller137663" 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 [ 25.798435] IPVS: ftp: loaded support on port[0] = 21 [ 25.802657] audit: type=1400 audit(1519451556.386:10): avc: denied { net_admin } for pid=4254 comm="syzkaller137663" 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 [ 25.845809] IPVS: ftp: loaded support on port[0] = 21 executing program executing program executing program executing program executing program executing program [ 25.885594] IPVS: ftp: loaded support on port[0] = 21 executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 25.931674] IPVS: ftp: loaded support on port[0] = 21 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 26.014807] IPVS: ftp: loaded support on port[0] = 21 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 26.102811] IPVS: ftp: loaded support on port[0] = 21 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 26.798136] kasan: CONFIG_KASAN_INLINE enabled [ 26.802927] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 26.810540] general protection fault: 0000 [#1] SMP KASAN [ 26.816080] Dumping ftrace buffer: [ 26.819607] (ftrace buffer empty) [ 26.823307] Modules linked in: [ 26.826496] CPU: 1 PID: 4473 Comm: syzkaller137663 Not tainted 4.16.0-rc2+ #326 [ 26.833930] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 26.843293] RIP: 0010:pppol2tp_connect+0x10a3/0x1dd0 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 26.848388] RSP: 0018:ffff8801aed0f9a8 EFLAGS: 00010202 [ 26.853746] RAX: dffffc0000000000 RBX: ffff8801aefc03c0 RCX: ffffffff854ac710 [ 26.861006] RDX: 0000000000000045 RSI: 0000000049049fbf RDI: 0000000000000228 [ 26.868270] RBP: ffff8801aed0fc28 R08: 1ffff10035da1e77 R09: 0000000000000002 [ 26.875534] R10: ffff8801aed0f878 R11: 0000000000000000 R12: ffff8801af54a000 [ 26.882799] R13: ffff8801aed0fc00 R14: 0000000000000000 R15: ffff8801aed0fae0 [ 26.890068] FS: 00000000018d0880(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 26.898289] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 26.904160] CR2: 00000000205fafd2 CR3: 00000001aef7e003 CR4: 00000000001606e0 [ 26.911425] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 26.918691] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 26.925954] Call Trace: [ 26.928547] ? pppol2tp_recv_payload_hook+0x1b0/0x1b0 [ 26.933742] ? selinux_netlbl_socket_connect+0x76/0x1b0 [ 26.939104] ? selinux_socket_connect+0x311/0x730 [ 26.943949] ? lock_downgrade+0x980/0x980 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 26.948102] ? selinux_socket_setsockopt+0x80/0x80 [ 26.953029] ? lock_release+0xa40/0xa40 [ 26.956997] ? trace_event_raw_event_sched_switch+0x810/0x810 [ 26.962881] ? __check_object_size+0x8b/0x530 [ 26.967380] ? __might_sleep+0x95/0x190 [ 26.971360] ? security_socket_connect+0x89/0xb0 [ 26.976114] SYSC_connect+0x213/0x4a0 [ 26.979916] ? SYSC_bind+0x410/0x410 [ 26.983626] ? __handle_mm_fault+0x3b60/0x3b60 [ 26.988200] ? vmacache_find+0x5f/0x280 [ 26.992192] ? mm_fault_error+0x2c0/0x2c0 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 26.996336] ? move_addr_to_kernel+0x60/0x60 [ 27.000741] ? SyS_accept+0x30/0x30 [ 27.004362] SyS_connect+0x24/0x30 [ 27.007900] do_syscall_64+0x280/0x940 [ 27.011787] ? __do_page_fault+0xc90/0xc90 [ 27.016016] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 27.020774] ? syscall_return_slowpath+0x550/0x550 [ 27.025698] ? syscall_return_slowpath+0x2ac/0x550 [ 27.030628] ? prepare_exit_to_usermode+0x350/0x350 [ 27.035643] ? retint_user+0x18/0x18 [ 27.039359] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 27.044206] entry_SYSCALL_64_after_hwframe+0x42/0xb7 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 27.049390] RIP: 0033:0x4427d9 [ 27.052568] RSP: 002b:00000000007ef0e8 EFLAGS: 00000206 ORIG_RAX: 000000000000002a [ 27.060266] RAX: ffffffffffffffda RBX: ffffffffffffffff RCX: 00000000004427d9 [ 27.067531] RDX: 000000000000002e RSI: 00000000205fafd2 RDI: 0000000000000004 [ 27.074792] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 27.082052] R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000000 [ 27.089316] R13: 0000000000000016 R14: 0000000000000003 R15: 0000000000000000 executing program executing program executing program executing program executing program executing program executing program [ 27.096587] Code: fe ff ff e8 50 44 26 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 df 09 00 00 4c 89 fa 48 b8 00 00 00 00 00 fc [ 27.115758] RIP: pppol2tp_connect+0x10a3/0x1dd0 RSP: ffff8801aed0f9a8 [ 27.122448] ---[ end trace 789eda853607c429 ]--- [ 27.127226] Kernel panic - not syncing: Fatal exception [ 27.133053] Dumping ftrace buffer: [ 27.136573] (ftrace buffer empty) [ 27.140260] Kernel Offset: disabled [ 27.143862] Rebooting in 86400 seconds..