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1
WARNING: net/netfilter/core.c:329 at nf_hook_entry_head+0x1f3/0x320 net/netfilter/core.c:329, CPU#1: syz.1.3894/23590
Modules linked in:
CPU: 1 UID: 0 PID: 23590 Comm: syz.1.3894 Tainted: G             L      syzkaller #0 PREEMPT(full) 
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
RIP: 0010:nf_hook_entry_head+0x1f3/0x320 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 1d 01 00 00 4d 3b a5 08 01 00 00 0f 84 c2 fe ff ff e8 de 45 5f f8 90 <0f> 0b 90 e9 0f ff ff ff e8 d0 45 5f f8 89 ee bf 02 00 00 00 e8 74
RSP: 0018:ffffc90007517190 EFLAGS: 00010287
RAX: 000000000000d87e RBX: 0000000000000005 RCX: ffffc9001632d000
RDX: 0000000000080000 RSI: ffffffff89a95982 RDI: ffff888037414108
RBP: 0000000000000000 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffff88802a20a640
R13: ffff888037414000 R14: ffff8880366bd090 R15: ffff8880925f5f3c
FS:  00007f26442b36c0(0000) GS:ffff88812444a000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f264344e9d3 CR3: 00000000945c0000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 __nf_unregister_net_hook+0x7e/0x6a0 net/netfilter/core.c:491
 nf_unregister_net_hook+0xda/0x120 net/netfilter/core.c:536
 nft_unregister_flowtable_ops net/netfilter/nf_tables_api.c:8895 [inline]
 __nft_unregister_flowtable_net_hooks+0xf7/0x3f0 net/netfilter/nf_tables_api.c:8910
 nft_unregister_flowtable_net_hooks net/netfilter/nf_tables_api.c:8922 [inline]
 nf_tables_commit+0x45a4/0x8ae0 net/netfilter/nf_tables_api.c:11081
 nfnetlink_rcv_batch+0x1a57/0x2880 net/netfilter/nfnetlink.c:576
 nfnetlink_rcv_skb_batch net/netfilter/nfnetlink.c:649 [inline]
 nfnetlink_rcv+0x3bd/0x440 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+0x8b0/0xda0 net/netlink/af_netlink.c:1894
 sock_sendmsg_nosec net/socket.c:727 [inline]
 __sock_sendmsg net/socket.c:742 [inline]
 ____sys_sendmsg+0xa54/0xc30 net/socket.c:2592
 ___sys_sendmsg+0x190/0x1e0 net/socket.c:2646
 __sys_sendmsg+0x170/0x220 net/socket.c:2678
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x106/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f264339c629
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f26442b3028 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f2643615fa0 RCX: 00007f264339c629
RDX: 0000000004000010 RSI: 0000200000000100 RDI: 0000000000000003
RBP: 00007f2643432b39 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f2643616038 R14: 00007f2643615fa0 R15: 00007ffcb2456268
 </TASK>