[....] Starting enhanced syslogd: rsyslogd[ 12.082930] audit: type=1400 audit(1514762676.000:5): avc: denied { syslog } for pid=3348 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: [ 16.548005] audit: type=1400 audit(1514762680.465:6): avc: denied { map } for pid=3487 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 '10.128.0.44' (ECDSA) to the list of known hosts. executing program [ 22.758655] audit: type=1400 audit(1514762686.676:7): avc: denied { map } for pid=3501 comm="syzkaller212264" path="/root/syzkaller212264445" 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 [ 22.762712] netlink: 11 bytes leftover after parsing attributes in process `syzkaller212264'. [ 22.762812] kasan: CONFIG_KASAN_INLINE enabled [ 22.762822] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 22.762831] general protection fault: 0000 [#1] SMP KASAN [ 22.762835] Dumping ftrace buffer: [ 22.762840] (ftrace buffer empty) [ 22.762842] Modules linked in: [ 22.762851] CPU: 1 PID: 3501 Comm: syzkaller212264 Not tainted 4.15.0-rc5+ #244 [ 22.762854] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 22.762868] RIP: 0010:nf_tables_dump_obj_done+0x3d/0x70 [ 22.762871] RSP: 0018:ffff8801d0b8f2a0 EFLAGS: 00010246 [ 22.762877] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff845f488d [ 22.762880] RDX: 0000000000000000 RSI: 0000000000000003 RDI: ffff8801bda6bc30 [ 22.762884] RBP: ffff8801d0b8f2a8 R08: 0000000000000000 R09: 1ffff1003a171e0d [ 22.762888] R10: ffff8801d0b8f030 R11: 0000000000000002 R12: 1ffff1003a171e5d [ 22.762891] R13: ffffffff845f4880 R14: ffff8801bda6bc01 R15: ffff8801bda6bc80 [ 22.762896] FS: 00000000011a6880(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000 [ 22.762900] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 22.762904] CR2: 0000000020a35000 CR3: 00000001bdee6003 CR4: 00000000001606e0 [ 22.762910] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 22.762914] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 22.762915] Call Trace: [ 22.762924] netlink_dump+0x97a/0xcf0 [ 22.762934] ? netlink_broadcast+0x50/0x50 [ 22.762948] __netlink_dump_start+0x4f0/0x6d0 [ 22.762961] nf_tables_getobj+0x401/0xa00 [ 22.762969] ? nfnetlink_rcv_msg+0x8c8/0xd70 [ 22.762979] ? nf_tables_dump_obj+0xee0/0xee0 [ 22.762987] ? nla_parse+0x29a/0x3d0 [ 22.762997] ? nft_obj_notify+0x100/0x100 [ 22.763006] ? list_add_tail_rcu+0x1d0/0x1d0 [ 22.763017] ? nf_tables_dump_obj+0xee0/0xee0 [ 22.763026] nfnetlink_rcv_msg+0xbf0/0xd70 [ 22.763035] ? nfnetlink_rcv_msg+0x30a/0xd70 [ 22.763053] ? nfnetlink_bind+0x310/0x310 [ 22.763064] ? __bfs+0x6c3/0x750 [ 22.763080] netlink_rcv_skb+0x224/0x470 [ 22.763087] ? nfnetlink_bind+0x310/0x310 [ 22.763094] ? netlink_ack+0xa10/0xa10 [ 22.763100] ? ns_capable_common+0xcf/0x160 [ 22.763110] ? __netlink_ns_capable+0xe1/0x120 [ 22.763121] nfnetlink_rcv+0x200/0x1920 [ 22.763127] ? lock_downgrade+0x980/0x980 [ 22.763136] ? lock_release+0xa40/0xa40 [ 22.763142] ? netlink_lookup+0x620/0xa90 [ 22.763159] ? nfnl_err_reset+0x2b0/0x2b0 [ 22.763169] ? netlink_deliver_tap+0x171/0xcf0 [ 22.763176] ? iov_iter_advance+0x2a1/0x13f0 [ 22.763186] ? netlink_getname+0x3c0/0x3c0 [ 22.763199] ? iov_iter_copy_from_user_atomic+0xe30/0xe30 [ 22.763206] ? netlink_skb_destructor+0x1d0/0x1d0 [ 22.763215] ? selinux_nlmsg_lookup+0x32b/0x430 [ 22.763226] netlink_unicast+0x4ee/0x700 [ 22.763237] ? netlink_attachskb+0x8a0/0x8a0 [ 22.763247] ? security_netlink_send+0x81/0xb0 [ 22.763255] netlink_sendmsg+0xa4a/0xe60 [ 22.763267] ? netlink_unicast+0x700/0x700 [ 22.763276] ? security_socket_sendmsg+0x89/0xb0 [ 22.763282] ? netlink_unicast+0x700/0x700 [ 22.763292] sock_sendmsg+0xca/0x110 [ 22.763300] sock_write_iter+0x31a/0x5d0 [ 22.763309] ? sock_sendmsg+0x110/0x110 [ 22.763323] ? iov_iter_init+0xaf/0x1d0 [ 22.763334] __vfs_write+0x684/0x970 [ 22.763343] ? kernel_read+0x120/0x120 [ 22.763349] ? bpf_fd_pass+0x280/0x280 [ 22.763360] ? _cond_resched+0x14/0x30 [ 22.763370] ? selinux_file_permission+0x82/0x460 [ 22.763384] ? rw_verify_area+0xe5/0x2b0 [ 22.763389] ? __fdget_raw+0x20/0x20 [ 22.763398] vfs_write+0x189/0x510 [ 22.763408] SyS_write+0xef/0x220 [ 22.763414] ? SyS_socket+0x12d/0x1d0 [ 22.763422] ? SyS_read+0x220/0x220 [ 22.763428] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 22.763437] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 22.763449] entry_SYSCALL_64_fastpath+0x23/0x9a [ 22.763453] RIP: 0033:0x43fc89 [ 22.763456] RSP: 002b:00007ffee6b98458 EFLAGS: 00000203 ORIG_RAX: 0000000000000001 [ 22.763462] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 000000000043fc89 [ 22.763466] RDX: 000000000000009c RSI: 0000000020a35000 RDI: 0000000000000003 [ 22.763469] RBP: 00000000006ca018 R08: 0000000000000000 R09: 0000000000000000 [ 22.763473] R10: 0000000000000000 R11: 0000000000000203 R12: 00000000004015f0 [ 22.763476] R13: 0000000000401680 R14: 0000000000000000 R15: 0000000000000000 [ 22.763490] Code: b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 75 30 48 8b 5b 28 48 b8 00 00 00 00 00 fc ff df 48 89 da 48 c1 ea 03 <80> 3c 02 00 75 1c 48 8b 3b e8 45 89 47 fd 48 89 df e8 3d 89 47 [ 22.763603] RIP: nf_tables_dump_obj_done+0x3d/0x70 RSP: ffff8801d0b8f2a0 [ 22.763630] ---[ end trace 52d06264c0f7361a ]--- [ 22.763634] Kernel panic - not syncing: Fatal exception [ 22.784911] Dumping ftrace buffer: [ 22.784914] (ftrace buffer empty) [ 22.784917] Kernel Offset: disabled [ 23.245818] Rebooting in 86400 seconds..