[syzbot] Monthly mptcp report (Oct 2025)

Hello mptcp maintainers/developers,

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

During the period, 2 new issues were detected and 5 were fixed.
In total, 4 issues are still open and 33 have already been fixed.

Some of the still happening issues:

Ref Crashes Repro Title
<1> 9       No    WARNING in subflow_data_ready (4)
                  https://syzkaller.appspot.com/bug?extid=0ff6b771b4f7a5bce83b
<2> 1       No    possible deadlock in mptcp_pm_nl_add_addr_doit
                  https://syzkaller.appspot.com/bug?extid=7fb125d1bae280dc4749
<3> 1       No    possible deadlock in mptcp_subflow_create_socket (2)
                  https://syzkaller.appspot.com/bug?extid=fb2c3fa2ba28aec94627

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