netlink: 'syz-executor3': attribute type 1 has an invalid length.
PPPIOCDETACH file->f_count=2
kasan: CONFIG_KASAN_INLINE enabled
kasan: GPF could be caused by NULL-ptr deref or user memory access
general protection fault: 0000 [#1] SMP KASAN
Dumping ftrace buffer:
   (ftrace buffer empty)
Modules linked in:
CPU: 0 PID: 12670 Comm: syz-executor1 Not tainted 4.15.0+ #299
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:css_put include/linux/cgroup.h:386 [inline]
RIP: 0010:cgroup_put include/linux/cgroup.h:415 [inline]
RIP: 0010:cgroup_mt_destroy_v1+0xcc/0x310 net/netfilter/xt_cgroup.c:102
RSP: 0018:ffff8801ce487110 EFLAGS: 00010207
RAX: dffffc0000000000 RBX: 1ffff10039c90e22 RCX: ffffffff84794906
RDX: 000000000000001d RSI: ffffc90004b9e000 RDI: 00000000000000ec
RBP: ffff8801ce487198 R08: 1ffff10039c90df0 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000080
R13: ffff8801ce487170 R14: dffffc0000000000 R15: ffffffff84794850
FS:  00007fc864046700(0000) GS:ffff8801db400000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020ec0ffc CR3: 00000001c6f54002 CR4: 00000000001606f0
DR0: 0000000020000000 DR1: 0000000020000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600
Call Trace:
 cleanup_match+0x14e/0x220 net/ipv6/netfilter/ip6_tables.c:481
 cleanup_entry+0xcb/0x350 net/ipv4/netfilter/ip_tables.c:646
 __do_replace+0x79d/0xa50 net/ipv4/netfilter/ip_tables.c:1089
 do_replace net/ipv4/netfilter/ip_tables.c:1145 [inline]
 do_ipt_set_ctl+0x40f/0x5f0 net/ipv4/netfilter/ip_tables.c:1675
 nf_sockopt net/netfilter/nf_sockopt.c:106 [inline]
 nf_setsockopt+0x67/0xc0 net/netfilter/nf_sockopt.c:115
 ip_setsockopt+0x97/0xa0 net/ipv4/ip_sockglue.c:1259
 sctp_setsockopt+0x2b6/0x61d0 net/sctp/socket.c:4104
 sock_common_setsockopt+0x95/0xd0 net/core/sock.c:2975
 SYSC_setsockopt net/socket.c:1849 [inline]
 SyS_setsockopt+0x189/0x360 net/socket.c:1828
 do_syscall_64+0x282/0x940 arch/x86/entry/common.c:287
 entry_SYSCALL_64_after_hwframe+0x26/0x9b
RIP: 0033:0x453299
RSP: 002b:00007fc864045c58 EFLAGS: 00000212 ORIG_RAX: 0000000000000036
RAX: ffffffffffffffda RBX: 000000000071bea0 RCX: 0000000000453299
RDX: 0000000000000040 RSI: 0000000000000000 RDI: 0000000000000016
RBP: 00000000000004d4 R08: 00000000000012f0 R09: 0000000000000000
R10: 0000000020001d10 R11: 0000000000000212 R12: 00000000006f6480
R13: 00000000ffffffff R14: 00007fc8640466d4 R15: 0000000000000000
Code: 02 00 00 4d 8b a4 24 08 10 00 00 4d 85 e4 74 3c e8 aa 5d f7 fc 49 8d 7c 24 6c 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <0f> b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 
RIP: css_put include/linux/cgroup.h:386 [inline] RSP: ffff8801ce487110
RIP: cgroup_put include/linux/cgroup.h:415 [inline] RSP: ffff8801ce487110
RIP: cgroup_mt_destroy_v1+0xcc/0x310 net/netfilter/xt_cgroup.c:102 RSP: ffff8801ce487110
---[ end trace bbd8ef6cccbad9c2 ]---