[....] Starting enhanced syslogd: rsyslogd[ 10.885363] audit: type=1400 audit(1515254214.403:5): avc: denied { syslog } for pid=3310 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 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. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 16.148013] audit: type=1400 audit(1515254219.665:6): avc: denied { map } for pid=3452 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 '10.128.0.19' (ECDSA) to the list of known hosts. [ 22.284856] audit: type=1400 audit(1515254225.802:7): avc: denied { map } for pid=3466 comm="syzkaller843163" path="/root/syzkaller843163292" 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 [ 22.310855] audit: type=1400 audit(1515254225.802:8): avc: denied { sys_admin } for pid=3466 comm="syzkaller843163" 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 executing program [ 22.336809] audit: type=1400 audit(1515254225.854:9): avc: denied { sys_chroot } for pid=3467 comm="syzkaller843163" 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 [ 22.342743] device syz0 entered promiscuous mode [ 22.366105] audit: type=1400 audit(1515254225.856:10): avc: denied { net_raw } for pid=3467 comm="syzkaller843163" capability=13 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 [ 22.390770] audit: type=1400 audit(1515254225.857:11): avc: denied { net_admin } for pid=3467 comm="syzkaller843163" 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 [ 22.416306] kasan: CONFIG_KASAN_INLINE enabled [ 22.420944] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 22.428334] general protection fault: 0000 [#1] SMP KASAN [ 22.433842] Dumping ftrace buffer: [ 22.437351] (ftrace buffer empty) [ 22.441031] Modules linked in: [ 22.444196] CPU: 0 PID: 3467 Comm: syzkaller843163 Not tainted 4.15.0-rc6-next-20180105+ #89 [ 22.452744] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 22.462074] RIP: 0010:skb_segment+0x645/0x2ed0 [ 22.466643] RSP: 0018:ffff8801c066f0d0 EFLAGS: 00010202 [ 22.471973] RAX: 0000000000000010 RBX: 0000000000000000 RCX: ffffffff83c69e60 [ 22.479209] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000080 [ 22.486444] RBP: ffff8801c066f2b0 R08: 0000000000000020 R09: 0000000000000002 [ 22.493690] R10: ffff8801c066f368 R11: 0000000000000001 R12: ffff8801c8c5f840 [ 22.500932] R13: 0000000000000000 R14: ffff8801c15eed00 R15: dffffc0000000000 [ 22.508171] FS: 0000000002373880(0000) GS:ffff8801db400000(0000) knlGS:0000000000000000 [ 22.516364] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 22.522211] CR2: 0000000020b13000 CR3: 00000001c22da001 CR4: 00000000001606f0 [ 22.529451] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 22.536705] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 22.543939] Call Trace: [ 22.546500] ? __lock_acquire+0x63e/0x3cf0 [ 22.550712] ? pskb_extract+0x1c0/0x1c0 [ 22.554653] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 22.559809] ? is_bpf_text_address+0x7b/0x120 [ 22.564270] ? check_noncircular+0x20/0x20 [ 22.568476] sctp_gso_segment+0x21f/0x810 [ 22.572590] ? sctp_csum_update+0x30/0x30 [ 22.576705] ? sctp_csum_update+0x30/0x30 [ 22.580830] inet_gso_segment+0x52f/0xff0 [ 22.584946] ? skb_mac_gso_segment+0x16c/0x560 [ 22.589497] skb_mac_gso_segment+0x27c/0x560 [ 22.593869] ? inet_sock_destruct+0x770/0x770 [ 22.598331] ? skb_network_protocol+0x4b0/0x4b0 [ 22.602966] ? __skb_gso_segment+0x670/0x670 [ 22.607339] __skb_gso_segment+0x311/0x670 [ 22.611541] validate_xmit_skb+0x447/0x980 [ 22.615753] validate_xmit_skb_list+0xbf/0x120 [ 22.620303] sch_direct_xmit+0x21c/0xf70 [ 22.624329] ? check_noncircular+0x20/0x20 [ 22.628528] ? trace_hardirqs_on_caller+0x19e/0x5c0 [ 22.633507] ? pfifo_fast_dequeue+0x20e/0x870 [ 22.637969] ? pfifo_fast_reset+0x490/0x490 [ 22.642255] ? __lock_is_held+0xb6/0x140 [ 22.646284] __qdisc_run+0x42d/0x1630 [ 22.650054] __dev_queue_xmit+0x9a1/0x2300 [ 22.654251] ? lock_downgrade+0x860/0x860 [ 22.658365] ? __might_fault+0xe0/0x1d0 [ 22.662307] ? netdev_pick_tx+0x300/0x300 [ 22.666424] ? iov_iter_single_seg_count+0x1b0/0x1b0 [ 22.671494] ? _copy_from_iter+0x2d3/0x9b0 [ 22.675699] ? __check_object_size+0x29/0x380 [ 22.680161] ? skb_copy_datagram_from_iter+0x3b1/0x5c0 [ 22.685403] ? _copy_from_iter_full+0x1d4/0x6d0 [ 22.690039] dev_queue_xmit+0x17/0x20 [ 22.693805] ? dev_queue_xmit+0x17/0x20 [ 22.697748] packet_sendmsg+0x31d5/0x5720 [ 22.701863] ? avc_has_perm+0x2f7/0x4c0 [ 22.705802] ? avc_has_perm_noaudit+0x420/0x420 [ 22.710440] ? mark_lock+0xe48/0x1070 [ 22.714218] ? packet_cached_dev_get+0x1f0/0x1f0 [ 22.718941] ? sock_has_perm+0x1ed/0x290 [ 22.722969] ? selinux_secmark_relabel_packet+0xc0/0xc0 [ 22.728308] ? selinux_socket_sendmsg+0x36/0x40 [ 22.732945] ? security_socket_sendmsg+0x89/0xb0 [ 22.737667] ? packet_cached_dev_get+0x1f0/0x1f0 [ 22.742387] sock_sendmsg+0xca/0x110 [ 22.746066] sock_write_iter+0x21d/0x3a0 [ 22.750091] ? avc_has_perm_noaudit+0x420/0x420 [ 22.754726] ? sock_sendmsg+0x110/0x110 [ 22.758669] ? iov_iter_init+0xaf/0x1d0 [ 22.762614] __vfs_write+0x550/0x740 [ 22.766295] ? kernel_read+0x120/0x120 [ 22.770149] ? bpf_fd_pass+0x280/0x280 [ 22.774002] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 22.779159] ? _cond_resched+0x14/0x30 [ 22.783023] ? selinux_file_permission+0x82/0x460 [ 22.787844] ? rw_verify_area+0xe5/0x2b0 [ 22.791873] vfs_write+0x189/0x510 [ 22.795380] SyS_write+0xd4/0x1a0 [ 22.798800] ? SyS_read+0x1a0/0x1a0 [ 22.802393] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 22.807898] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 22.812624] entry_SYSCALL_64_fastpath+0x23/0x9a [ 22.817354] RIP: 0033:0x444c09 [ 22.820510] RSP: 002b:00000000007eff48 EFLAGS: 00000297 ORIG_RAX: 0000000000000001 [ 22.828193] RAX: ffffffffffffffda RBX: 00007ffceb064540 RCX: 0000000000444c09 [ 22.835429] RDX: 000000000000002a RSI: 0000000020634000 RDI: 0000000000000005 [ 22.842684] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 22.849922] R10: 0000000000000100 R11: 0000000000000297 R12: 0000000000402800 [ 22.857159] R13: 0000000000402890 R14: 0000000000000000 R15: 0000000000000000 [ 22.864412] Code: b5 e8 fe ff ff 39 b5 ec fe ff ff 0f 8f a3 00 00 00 e8 d0 70 97 fd 48 8b 85 00 ff ff ff 48 8d b8 80 00 00 00 48 89 f8 48 c1 e8 03 <42> 0f b6 14 38 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f [ 22.883468] RIP: skb_segment+0x645/0x2ed0 RSP: ffff8801c066f0d0 [ 22.889541] ---[ end trace be65b31d2bd611b0 ]--- [ 22.894270] Kernel panic - not syncing: Fatal exception in interrupt [ 22.901100] Dumping ftrace buffer: [ 22.904606] (ftrace buffer empty) [ 22.908283] Kernel Offset: disabled [ 22.911879] Rebooting in 86400 seconds..