[syzbot] Monthly netfilter report (Jul 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, 0 new issues were detected and 0 were fixed.
In total, 11 issues are still open and 198 have already been fixed.
There are also 3 low-priority issues.

Some of the still happening issues:

Ref Crashes Repro Title
<1> 1759    Yes   INFO: task hung in addrconf_dad_work (5)
                  https://syzkaller.appspot.com/bug?extid=82ccd564344eeaa5427d
<2> 703     Yes   INFO: rcu detected stall in addrconf_rs_timer (6)
                  https://syzkaller.appspot.com/bug?extid=fecf8bd19c1f78edb255
<3> 137     Yes   INFO: rcu detected stall in NF_HOOK (2)
                  https://syzkaller.appspot.com/bug?extid=34c2df040c6cfa15fdfe
<4> 124     Yes   INFO: rcu detected stall in br_handle_frame (6)
                  https://syzkaller.appspot.com/bug?extid=f8850bc3986562f79619
<5> 78      No    INFO: task hung in nfnetlink_rcv_msg (5)
                  https://syzkaller.appspot.com/bug?extid=c4b20b80ee6a7a2f5012
<6> 2       No    WARNING in nf_conntrack_cleanup_net_list (2)
                  https://syzkaller.appspot.com/bug?extid=122256c3e2bf6ec9f928

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