netdev - [syzbot] Monthly netfilter report (Dec 2025)

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Message-ID: <694e3d8b.050a0220.35954c.0065.GAE@google.com>
Date: Thu, 25 Dec 2025 23:47:23 -0800
From: syzbot <syzbot+listde02170f214c3819f6ae@...kaller.appspotmail.com>
To: kadlec@...filter.org, linux-kernel@...r.kernel.org, netdev@...r.kernel.org, 
	netfilter-devel@...r.kernel.org, pablo@...filter.org, 
	syzkaller-bugs@...glegroups.com
Subject: [syzbot] Monthly netfilter report (Dec 2025)

Hello netfilter maintainers/developers,

This is a 31-day syzbot report for the netfilter subsystem.
All related reports/information can be found at:
https://syzkaller.appspot.com/upstream/s/netfilter

During the period, 2 new issues were detected and 0 were fixed.
In total, 13 issues are still open and 191 have already been fixed.

Some of the still happening issues:

Ref Crashes Repro Title
<1> 627     Yes   INFO: rcu detected stall in addrconf_rs_timer (6)
                  https://syzkaller.appspot.com/bug?extid=fecf8bd19c1f78edb255
<2> 276     Yes   INFO: rcu detected stall in gc_worker (3)
                  https://syzkaller.appspot.com/bug?extid=eec403943a2a2455adaa
<3> 119     Yes   INFO: rcu detected stall in NF_HOOK (2)
                  https://syzkaller.appspot.com/bug?extid=34c2df040c6cfa15fdfe
<4> 11      Yes   WARNING in __nf_unregister_net_hook (9)
                  https://syzkaller.appspot.com/bug?extid=78ac1e46d2966eb70fda
<5> 6       No    possible deadlock in ip_set_nfnl_get_byindex
                  https://syzkaller.appspot.com/bug?extid=aefe8555e94ae62b95c1

---
This report is generated by a bot. It may contain errors.
See https://goo.gl/tpsmEJ for more information about syzbot.
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