kasan: GPF could be caused by NULL-ptr deref or user memory access
general protection fault: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 4149 Comm: syz-executor.2 Not tainted 5.5.0-rc6-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:nft_chain_parse_hook+0x54c/0xd50 net/netfilter/nf_tables_api.c:1767
Code: e8 29 8b dd fa 41 83 fc 06 72 0a e8 6e 87 dd fa e9 d7 03 00 00 4d 8d 7e 18 4c 89 f8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <8a> 04 08 84 c0 0f 85 76 07 00 00 bb 01 00 00 00 44 89 e1 d3 e3 45
RSP: 0018:ffffc90004cb7640 EFLAGS: 00010206
RAX: 0000000000000003 RBX: ffffffff8add4980 RCX: dffffc0000000000
RDX: ffffc9000e9cc000 RSI: 0000000000000000 RDI: 0000000000000005
RBP: ffffc90004cb7710 R08: ffffffff8698f647 R09: ffffffff83b522f7
R10: ffff8880985d0200 R11: 0000000000000004 R12: 0000000000000000
R13: 1ffff92000996f00 R14: 0000000000000000 R15: 0000000000000018
FS:  00007f52efadb700(0000) GS:ffff8880aed00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000004bff1f CR3: 000000004d2e6000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 nf_tables_addchain net/netfilter/nf_tables_api.c:1888 [inline]
 nf_tables_newchain+0xec3/0x3ea0 net/netfilter/nf_tables_api.c:2196
 nfnetlink_rcv_batch net/netfilter/nfnetlink.c:433 [inline]
 nfnetlink_rcv_skb_batch net/netfilter/nfnetlink.c:543 [inline]
 nfnetlink_rcv+0xecf/0x1e50 net/netfilter/nfnetlink.c:561
 netlink_unicast_kernel net/netlink/af_netlink.c:1302 [inline]
 netlink_unicast+0x767/0x920 net/netlink/af_netlink.c:1328
 netlink_sendmsg+0xa2c/0xd50 net/netlink/af_netlink.c:1917
 sock_sendmsg_nosec net/socket.c:639 [inline]
 sock_sendmsg net/socket.c:659 [inline]
 ____sys_sendmsg+0x4f7/0x7f0 net/socket.c:2330
 ___sys_sendmsg net/socket.c:2384 [inline]
 __sys_sendmsg+0x1ed/0x290 net/socket.c:2417
 __do_sys_sendmsg net/socket.c:2426 [inline]
 __se_sys_sendmsg net/socket.c:2424 [inline]
 __x64_sys_sendmsg+0x7f/0x90 net/socket.c:2424
 do_syscall_64+0xf7/0x1c0 arch/x86/entry/common.c:294
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x45aff9
Code: ad b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 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 7b b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f52efadac78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f52efadb6d4 RCX: 000000000045aff9
RDX: 0000000000000000 RSI: 00000000200001c0 RDI: 0000000000000003
RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 0000000000000901 R14: 00000000004ca2fe R15: 000000000075bf2c
Modules linked in:
---[ end trace 16045d753e836746 ]---
RIP: 0010:nft_chain_parse_hook+0x54c/0xd50 net/netfilter/nf_tables_api.c:1767
Code: e8 29 8b dd fa 41 83 fc 06 72 0a e8 6e 87 dd fa e9 d7 03 00 00 4d 8d 7e 18 4c 89 f8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <8a> 04 08 84 c0 0f 85 76 07 00 00 bb 01 00 00 00 44 89 e1 d3 e3 45
RSP: 0018:ffffc90004cb7640 EFLAGS: 00010206
RAX: 0000000000000003 RBX: ffffffff8add4980 RCX: dffffc0000000000
RDX: ffffc9000e9cc000 RSI: 0000000000000000 RDI: 0000000000000005
RBP: ffffc90004cb7710 R08: ffffffff8698f647 R09: ffffffff83b522f7
R10: ffff8880985d0200 R11: 0000000000000004 R12: 0000000000000000
R13: 1ffff92000996f00 R14: 0000000000000000 R15: 0000000000000018
FS:  00007f52efadb700(0000) GS:ffff8880aed00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000004bff1f CR3: 000000004d2e6000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400