------------[ cut here ]------------
WARNING: net/netfilter/core.c:329 at nf_hook_entry_head+0x230/0x310 net/netfilter/core.c:329, CPU#0: syz.7.9193/27932
Modules linked in:
CPU: 0 UID: 0 PID: 27932 Comm: syz.7.9193 Tainted: G             L      syzkaller #0 PREEMPT(full) 
Tainted: [L]=SOFTLOCKUP
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
RIP: 0010:nf_hook_entry_head+0x230/0x310 net/netfilter/core.c:329
Code: 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 dc 00 00 00 4d 3b a5 08 01 00 00 0f 84 07 ff ff ff e8 61 95 2e f8 90 <0f> 0b 90 eb 98 e8 56 95 2e f8 89 ee bf 01 00 00 00 e8 ea 8f 2e f8
RSP: 0018:ffffc90005de71a8 EFLAGS: 00010287
RAX: 000000000000740f RBX: 0000000000000005 RCX: ffffc90026569000
RDX: 0000000000080000 RSI: ffffffff8990510f RDI: ffff88804bff8108
RBP: 0000000000000000 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000000 R11: ffff8880375ed4b0 R12: ffff8880560d0000
R13: ffff88804bff8000 R14: ffff888038736c10 R15: ffff88805e57fb3c
FS:  00007f80e03e06c0(0000) GS:ffff8880d68f5000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f4de31e7dac CR3: 0000000120b72000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 3a810b1eb6134bdc DR6: 00000000ffff0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 __nf_unregister_net_hook+0x7e/0x660 net/netfilter/core.c:491
 nf_unregister_net_hook+0xd5/0x110 net/netfilter/core.c:536
 nft_unregister_flowtable_ops net/netfilter/nf_tables_api.c:9038 [inline]
 __nft_unregister_flowtable_net_hooks+0xfc/0x3f0 net/netfilter/nf_tables_api.c:9053
 nft_unregister_flowtable_net_hooks net/netfilter/nf_tables_api.c:9065 [inline]
 nf_tables_commit+0x249d/0x8c40 net/netfilter/nf_tables_api.c:11224
 nfnetlink_rcv_batch+0x115e/0x2350 net/netfilter/nfnetlink.c:576
 nfnetlink_rcv_skb_batch net/netfilter/nfnetlink.c:649 [inline]
 nfnetlink_rcv+0x3c1/0x430 net/netfilter/nfnetlink.c:667
 netlink_unicast_kernel net/netlink/af_netlink.c:1318 [inline]
 netlink_unicast+0x5aa/0x870 net/netlink/af_netlink.c:1344
 netlink_sendmsg+0x8c8/0xdd0 net/netlink/af_netlink.c:1894
 sock_sendmsg_nosec net/socket.c:727 [inline]
 __sock_sendmsg net/socket.c:742 [inline]
 ____sys_sendmsg+0xa5d/0xc30 net/socket.c:2592
 ___sys_sendmsg+0x134/0x1d0 net/socket.c:2646
 __sys_sendmsg+0x16d/0x220 net/socket.c:2678
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xcd/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f80df58f7c9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f80e03e0038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f80df7e5fa0 RCX: 00007f80df58f7c9
RDX: 0000000000000000 RSI: 000020000000c2c0 RDI: 0000000000000004
RBP: 00007f80df613f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f80df7e6038 R14: 00007f80df7e5fa0 R15: 00007ffefaf05a08
 </TASK>