[syzbot] Monthly netfilter report (Oct 2026)

[syzbot]

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, 4 new issues were detected and 1 were fixed.
In total, 12 issues are still open and 201 have already been fixed.
There is also 1 low-priority issue.

Some of the still happening issues:

Ref Crashes Repro Title
<1> 140     Yes   INFO: rcu detected stall in rescuer_thread (2)
                  https://syzkaller.appspot.com/bug?extid=d5f7a5097c24c7c2dbbb
<2> 15      No    BUG: workqueue lockup in batadv_tt_purge
                  https://syzkaller.appspot.com/bug?extid=61b202fdc410840f0198
<3> 10      Yes   WARNING in nf_ct_bridge_post
                  https://syzkaller.appspot.com/bug?extid=a8ba738fe2db6b4bb27f
<4> 4       No    WARNING in nf_flow_table_extend_ct_timeout
                  https://syzkaller.appspot.com/bug?extid=521f7e7e2b974abde99a
<5> 108     Yes   INFO: task hung in nfnetlink_rcv_msg (5)
                  https://syzkaller.appspot.com/bug?extid=c4b20b80ee6a7a2f5012

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This report is generated by a bot. It may contain errors.
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