[syzbot] Monthly overlayfs report (Oct 2023)

[syzbot]

Hello overlayfs maintainers/developers,

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

During the period, 4 new issues were detected and 0 were fixed.
In total, 9 issues are still open and 18 have been fixed so far.

Some of the still happening issues:

Ref Crashes Repro Title
<1> 836     Yes   possible deadlock in mnt_want_write (2)
                  https://syzkaller.appspot.com/bug?extid=b42fe626038981fb7bfa
<2> 27      Yes   BUG: unable to handle kernel paging request in take_dentry_name_snapshot
                  https://syzkaller.appspot.com/bug?extid=90392eaed540afcc8fc3
<3> 1       No    possible deadlock in ovl_copy_up_start (2)
                  https://syzkaller.appspot.com/bug?extid=e8628856801e9809216f

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