[?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. [ 11.991154] audit: type=1400 audit(1515294409.545:6): avc: denied { map } for pid=3453 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 '10.128.0.25' (ECDSA) to the list of known hosts. syzkaller login: [ 34.328957] audit: type=1400 audit(1515294431.883:7): avc: denied { map } for pid=3472 comm="syzkaller145754" path="/root/syzkaller145754094" 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 [ 34.355062] audit: type=1400 audit(1515294431.883:8): avc: denied { sys_admin } for pid=3472 comm="syzkaller145754" 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 [ 34.381468] audit: type=1400 audit(1515294431.936:9): avc: denied { sys_chroot } for pid=3473 comm="syzkaller145754" 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 [ 34.387819] device syz0 entered promiscuous mode [ 34.410748] audit: type=1400 audit(1515294431.938:10): avc: denied { net_raw } for pid=3473 comm="syzkaller145754" 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 [ 34.435135] audit: type=1400 audit(1515294431.940:11): avc: denied { net_admin } for pid=3473 comm="syzkaller145754" 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 [ 34.461325] kasan: CONFIG_KASAN_INLINE enabled [ 34.465984] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 34.473383] general protection fault: 0000 [#1] SMP KASAN [ 34.478894] Dumping ftrace buffer: [ 34.482401] (ftrace buffer empty) [ 34.486088] Modules linked in: [ 34.489256] CPU: 0 PID: 3473 Comm: syzkaller145754 Not tainted 4.15.0-rc6-mm1+ #51 [ 34.496932] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 34.506270] RIP: 0010:skb_segment+0x645/0x2ed0 [ 34.510818] RSP: 0018:ffff8801c0a0f0d0 EFLAGS: 00010202 [ 34.516146] RAX: 0000000000000010 RBX: 0000000000000000 RCX: ffffffff83c6ae60 [ 34.523381] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000080 [ 34.530619] RBP: ffff8801c0a0f2b0 R08: 0000000000000020 R09: 0000000000000002 [ 34.537870] R10: ffff8801c0a0f368 R11: 0000000000000001 R12: ffff8801c7412300 [ 34.545110] R13: 0000000000000000 R14: ffff8801c0f80ac0 R15: dffffc0000000000 [ 34.552357] FS: 000000000193d880(0000) GS:ffff8801db400000(0000) knlGS:0000000000000000 [ 34.560551] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 34.566401] CR2: 0000000020b13000 CR3: 00000001c1db1001 CR4: 00000000001606f0 [ 34.573642] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 34.580898] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 34.588144] Call Trace: [ 34.590713] ? __lock_acquire+0x63e/0x3cf0 [ 34.594924] ? pskb_extract+0x1c0/0x1c0 [ 34.598888] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 34.604052] ? is_bpf_text_address+0x7b/0x120 [ 34.608522] ? check_noncircular+0x20/0x20 [ 34.612733] sctp_gso_segment+0x21f/0x810 [ 34.616856] ? sctp_csum_update+0x30/0x30 [ 34.620980] ? sctp_csum_update+0x30/0x30 [ 34.625097] inet_gso_segment+0x52f/0xff0 [ 34.629223] ? skb_mac_gso_segment+0x16c/0x560 [ 34.633775] skb_mac_gso_segment+0x27c/0x560 [ 34.638161] ? inet_sock_destruct+0x770/0x770 [ 34.642627] ? skb_network_protocol+0x4b0/0x4b0 [ 34.647270] ? __skb_gso_segment+0x670/0x670 [ 34.651654] __skb_gso_segment+0x311/0x670 [ 34.655878] validate_xmit_skb+0x447/0x980 [ 34.660084] validate_xmit_skb_list+0xbf/0x120 [ 34.664636] sch_direct_xmit+0x21c/0xf70 [ 34.668683] ? check_noncircular+0x20/0x20 [ 34.672892] ? trace_hardirqs_on_caller+0x19e/0x5c0 [ 34.677876] ? pfifo_fast_dequeue+0x20e/0x870 [ 34.682338] ? pfifo_fast_reset+0x490/0x490 [ 34.686625] ? __lock_is_held+0xb6/0x140 [ 34.690658] __qdisc_run+0x42d/0x1630 [ 34.694434] __dev_queue_xmit+0x9a1/0x2300 [ 34.698657] ? lock_downgrade+0x860/0x860 [ 34.702782] ? __might_fault+0xe0/0x1d0 [ 34.706727] ? netdev_pick_tx+0x300/0x300 [ 34.710846] ? iov_iter_single_seg_count+0x150/0x1b0 [ 34.715924] ? _copy_from_iter+0x2d3/0x9b0 [ 34.720128] ? __check_object_size+0x29/0x380 [ 34.724596] ? skb_copy_datagram_from_iter+0x3b1/0x5c0 [ 34.729842] ? _copy_from_iter_full+0x1d4/0x6d0 [ 34.734480] dev_queue_xmit+0x17/0x20 [ 34.738255] ? dev_queue_xmit+0x17/0x20 [ 34.742205] packet_sendmsg+0x31d5/0x5720 [ 34.746334] ? avc_has_perm+0x2f7/0x4c0 [ 34.750277] ? avc_has_perm_noaudit+0x420/0x420 [ 34.754919] ? mark_lock+0xda8/0x1070 [ 34.758691] ? packet_cached_dev_get+0x1f0/0x1f0 [ 34.763414] ? sock_has_perm+0x1ed/0x290 [ 34.767442] ? selinux_secmark_relabel_packet+0xc0/0xc0 [ 34.772781] ? selinux_socket_sendmsg+0x36/0x40 [ 34.777429] ? security_socket_sendmsg+0x89/0xb0 [ 34.782155] ? packet_cached_dev_get+0x1f0/0x1f0 [ 34.786898] sock_sendmsg+0xca/0x110 [ 34.790589] sock_write_iter+0x21d/0x3a0 [ 34.794621] ? avc_has_perm_noaudit+0x420/0x420 [ 34.799257] ? sock_sendmsg+0x110/0x110 [ 34.803202] ? iov_iter_init+0xaf/0x1d0 [ 34.807152] __vfs_write+0x550/0x740 [ 34.810835] ? kernel_read+0x120/0x120 [ 34.814688] ? bpf_fd_pass+0x280/0x280 [ 34.818543] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 34.823704] ? _cond_resched+0x14/0x30 [ 34.827564] ? selinux_file_permission+0x82/0x460 [ 34.832390] ? rw_verify_area+0xe5/0x2b0 [ 34.836423] vfs_write+0x189/0x510 [ 34.839935] SyS_write+0xd4/0x1a0 [ 34.843355] ? SyS_read+0x1a0/0x1a0 [ 34.846960] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 34.851947] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 34.856682] entry_SYSCALL_64_fastpath+0x23/0x9a [ 34.861413] RIP: 0033:0x444c09 [ 34.864572] RSP: 002b:00000000007eff48 EFLAGS: 00000297 ORIG_RAX: 0000000000000001 [ 34.872256] RAX: ffffffffffffffda RBX: 00007fff89781660 RCX: 0000000000444c09 [ 34.879500] RDX: 000000000000002a RSI: 0000000020634000 RDI: 0000000000000005 [ 34.886739] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 34.893977] R10: 0000000000000100 R11: 0000000000000297 R12: 0000000000402800 [ 34.901214] R13: 0000000000402890 R14: 0000000000000000 R15: 0000000000000000 [ 34.908456] Code: b5 e8 fe ff ff 39 b5 ec fe ff ff 0f 8f a3 00 00 00 e8 70 61 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 [ 34.928506] RIP: skb_segment+0x645/0x2ed0 RSP: ffff8801c0a0f0d0 [ 34.934579] ---[ end trace fcc0ea8a58bdec8f ]--- [ 34.939327] Kernel panic - not syncing: Fatal exception in interrupt [ 34.946177] Dumping ftrace buffer: [ 34.949683] (ftrace buffer empty) [ 34.953358] Kernel Offset: disabled [ 34.956949] Rebooting in 86400 seconds..