audit: type=1800 audit(1541035868.403:30): pid=5568 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="rmnologin" dev="sda1" ino=2423 res=0 netlink: 'syz-executor224': attribute type 3 has an invalid length. netlink: 'syz-executor224': attribute type 2 has an invalid length. kasan: CONFIG_KASAN_INLINE enabled kasan: GPF could be caused by NULL-ptr deref or user memory access general protection fault: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 5723 Comm: syz-executor224 Not tainted 4.19.0+ #280 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:icmp_timeout_obj_to_nlattr+0x77/0x170 net/netfilter/nf_conntrack_proto_icmp.c:297 Code: b5 41 c7 00 f1 f1 f1 f1 c7 40 04 04 f2 f2 f2 65 48 8b 04 25 28 00 00 00 48 89 45 d0 31 c0 e8 40 33 26 fb 4c 89 e8 48 c1 e8 03 <42> 0f b6 14 38 4c 89 e8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 RSP: 0018:ffff8801d44cf220 EFLAGS: 00010246 RAX: 0000000000000000 RBX: 1ffff1003a899e45 RCX: ffffffff865c2854 RDX: 0000000000000000 RSI: ffffffff865930c0 RDI: ffff8801d3a48b40 RBP: ffff8801d44cf2b0 R08: ffff8801d3aba180 R09: ffff8801d440c5a8 R10: ffffed003a8818b4 R11: ffff8801d440c5a0 R12: ffff8801d3a48b40 R13: 0000000000000000 R14: ffff8801d44cf288 R15: dffffc0000000000 FS: 0000000001a5f880(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000208a7000 CR3: 00000001d7ab4000 CR4: 00000000001406e0 Call Trace: cttimeout_default_fill_info net/netfilter/nfnetlink_cttimeout.c:411 [inline] cttimeout_default_get+0x644/0x9e0 net/netfilter/nfnetlink_cttimeout.c:457 nfnetlink_rcv_msg+0xdd3/0x10c0 net/netfilter/nfnetlink.c:228 netlink_rcv_skb+0x172/0x440 net/netlink/af_netlink.c:2477 nfnetlink_rcv+0x1c0/0x4d0 net/netfilter/nfnetlink.c:560 netlink_unicast_kernel net/netlink/af_netlink.c:1310 [inline] netlink_unicast+0x5a5/0x760 net/netlink/af_netlink.c:1336 netlink_sendmsg+0xa18/0xfc0 net/netlink/af_netlink.c:1917 sock_sendmsg_nosec net/socket.c:621 [inline] sock_sendmsg+0xd5/0x120 net/socket.c:631 ___sys_sendmsg+0x7fd/0x930 net/socket.c:2116 __sys_sendmsg+0x11d/0x280 net/socket.c:2154 __do_sys_sendmsg net/socket.c:2163 [inline] __se_sys_sendmsg net/socket.c:2161 [inline] __x64_sys_sendmsg+0x78/0xb0 net/socket.c:2161 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4400d9 Code: 18 89 d0 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 fb 13 fc ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007ffc10232358 EFLAGS: 00000213 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 00000000004400d9 RDX: 0000000000000000 RSI: 0000000020dddfc8 RDI: 0000000000000003 RBP: 00000000006ca018 R08: 0000000000000000 R09: 00000000004002c8 R10: 0000000000000000 R11: 0000000000000213 R12: 0000000000401960 R13: 00000000004019f0 R14: 0000000000000000 R15: 0000000000000000 Modules linked in: ---[ end trace 2ded1daf14e335b6 ]--- RIP: 0010:icmp_timeout_obj_to_nlattr+0x77/0x170 net/netfilter/nf_conntrack_proto_icmp.c:297 Code: b5 41 c7 00 f1 f1 f1 f1 c7 40 04 04 f2 f2 f2 65 48 8b 04 25 28 00 00 00 48 89 45 d0 31 c0 e8 40 33 26 fb 4c 89 e8 48 c1 e8 03 <42> 0f b6 14 38 4c 89 e8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 RSP: 0018:ffff8801d44cf220 EFLAGS: 00010246 RAX: 0000000000000000 RBX: 1ffff1003a899e45 RCX: ffffffff865c2854 RDX: 0000000000000000 RSI: ffffffff865930c0 RDI: ffff8801d3a48b40 RBP: ffff8801d44cf2b0 R08: ffff8801d3aba180 R09: ffff8801d440c5a8 R10: ffffed003a8818b4 R11: ffff8801d440c5a0 R12: ffff8801d3a48b40 R13: 0000000000000000 R14: ffff8801d44cf288 R15: dffffc0000000000 FS: 0000000001a5f880(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000208a7000 CR3: 00000001d7ab4000 CR4: 00000000001406e0