linux-kernel - [syzbot] [netfilter?] WARNING in __nf_unregister_net

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Message-ID: <6706350d.050a0220.840ef.000e.GAE@google.com>
Date: Wed, 09 Oct 2024 00:47:25 -0700
From: syzbot <syzbot+90c2972f9dd6cdcf7b07@...kaller.appspotmail.com>
To: coreteam@...filter.org, davem@...emloft.net, edumazet@...gle.com, 
	kadlec@...filter.org, kuba@...nel.org, linux-kernel@...r.kernel.org, 
	netdev@...r.kernel.org, netfilter-devel@...r.kernel.org, pabeni@...hat.com, 
	pablo@...filter.org, syzkaller-bugs@...glegroups.com
Subject: [syzbot] [netfilter?] WARNING in __nf_unregister_net_hook (7)

Hello,

syzbot found the following issue on:

HEAD commit:    9234a2549cb6 net: phy: bcm84881: Fix some error handling p..
git tree:       net
console output: https://syzkaller.appspot.com/x/log.txt?x=10833bd0580000
kernel config:  https://syzkaller.appspot.com/x/.config?x=f95955e3f7b5790c
dashboard link: https://syzkaller.appspot.com/bug?extid=90c2972f9dd6cdcf7b07
compiler:       Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40

Unfortunately, I don't have any reproducer for this issue yet.

Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/05a4f5ae2b6e/disk-9234a254.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/157bcf16a614/vmlinux-9234a254.xz
kernel image: https://storage.googleapis.com/syzbot-assets/1f5a2485a15e/bzImage-9234a254.xz

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+90c2972f9dd6cdcf7b07@...kaller.appspotmail.com

------------[ cut here ]------------
hook not found, pf 2 num 0
WARNING: CPU: 0 PID: 11707 at net/netfilter/core.c:517 __nf_unregister_net_hook+0x482/0x800 net/netfilter/core.c:517
Modules linked in:
CPU: 0 UID: 0 PID: 11707 Comm: syz.4.1852 Not tainted 6.12.0-rc1-syzkaller-00147-g9234a2549cb6 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:__nf_unregister_net_hook+0x482/0x800 net/netfilter/core.c:517
Code: 01 90 48 8b 44 24 10 0f b6 04 28 84 c0 0f 85 6d 03 00 00 48 8b 04 24 8b 10 48 c7 c7 a0 3f 13 8d 8b 74 24 1c e8 5f ff 7b f7 90 <0f> 0b 90 90 e9 39 01 00 00 e8 f0 02 bb f7 e9 5e fc ff ff e8 e6 02
RSP: 0018:ffffc9000486ef00 EFLAGS: 00010246
RAX: 789495961ce19900 RBX: ffff888069756a00 RCX: 0000000000040000
RDX: ffffc9000c6f5000 RSI: 00000000000026ab RDI: 00000000000026ac
RBP: dffffc0000000000 R08: ffffffff8155daa2 R09: 1ffff110170c519a
R10: dffffc0000000000 R11: ffffed10170c519b R12: ffff88802715d940
R13: ffff88802715ea50 R14: 0000000000000004 R15: ffff888067836800
FS:  00007f3bff1fb6c0(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f3bff1faf98 CR3: 000000007f7ca000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 nf_unregister_net_hook+0x98/0xe0 net/netfilter/core.c:535
 __nf_tables_unregister_hook net/netfilter/nf_tables_api.c:384 [inline]
 nf_tables_unregister_hook net/netfilter/nf_tables_api.c:391 [inline]
 nft_table_disable+0x305/0x3c0 net/netfilter/nf_tables_api.c:1221
 nf_tables_table_disable net/netfilter/nf_tables_api.c:1253 [inline]
 nf_tables_commit+0x4e7e/0x91e0 net/netfilter/nf_tables_api.c:10415
 nfnetlink_rcv_batch net/netfilter/nfnetlink.c:574 [inline]
 nfnetlink_rcv_skb_batch net/netfilter/nfnetlink.c:647 [inline]
 nfnetlink_rcv+0xc77/0x2ab0 net/netfilter/nfnetlink.c:665
 netlink_unicast_kernel net/netlink/af_netlink.c:1331 [inline]
 netlink_unicast+0x7f6/0x990 net/netlink/af_netlink.c:1357
 netlink_sendmsg+0x8e4/0xcb0 net/netlink/af_netlink.c:1901
 sock_sendmsg_nosec net/socket.c:729 [inline]
 __sock_sendmsg+0x221/0x270 net/socket.c:744
 ____sys_sendmsg+0x52a/0x7e0 net/socket.c:2602
 ___sys_sendmsg net/socket.c:2656 [inline]
 __sys_sendmsg+0x292/0x380 net/socket.c:2685
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f3bfe37dff9
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:00007f3bff1fb038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f3bfe535f80 RCX: 00007f3bfe37dff9
RDX: 0000000000040010 RSI: 0000000020000240 RDI: 0000000000000003
RBP: 00007f3bfe3f0296 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f3bfe535f80 R15: 00007fff127040d8
 </TASK>


---
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