[syzbot] Monthly fs report (Sep 2025)

[syzbot]

Hello fs maintainers/developers,

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

During the period, 4 new issues were detected and 1 were fixed.
In total, 58 issues are still open and 395 have already been fixed.

Some of the still happening issues:

Ref Crashes Repro Title
<1> 6883 Yes WARNING in inc_nlink (3)
https://syzkaller.appspot.com/bug?extid=2b3af42c0644df1e4da9
<2> 6287 Yes possible deadlock in input_event (2)
https://syzkaller.appspot.com/bug?extid=d4c06e848a1c1f9f726f
<3> 4544 Yes INFO: task hung in path_openat (7)
https://syzkaller.appspot.com/bug?extid=950a0cdaa2fdd14f5bdc
<4> 3991 Yes BUG: unable to handle kernel NULL pointer dereference in filemap_read_folio (4)
https://syzkaller.appspot.com/bug?extid=09b7d050e4806540153d
<5> 3207 Yes INFO: task hung in __iterate_supers
https://syzkaller.appspot.com/bug?extid=b10aefdd9ef275e9368d
<6> 2287 Yes INFO: task hung in filename_create (4)
https://syzkaller.appspot.com/bug?extid=72c5cf124089bc318016
<7> 1886 Yes INFO: task hung in lookup_slow (3)
https://syzkaller.appspot.com/bug?extid=7cfc6a4f6b025f710423
<8> 1292 Yes KASAN: use-after-free Read in hpfs_get_ea
https://syzkaller.appspot.com/bug?extid=fa88eb476e42878f2844
<9> 1066 Yes INFO: task hung in synchronize_rcu (4)
https://syzkaller.appspot.com/bug?extid=222aa26d0a5dbc2e84fe
<10> 931 Yes INFO: task hung in user_get_super (2)
https://syzkaller.appspot.com/bug?extid=ba09f4a317431df6cddf

---
This report is generated by a bot. It may contain errors.
See https://goo.gl/tpsmEJ for more information about syzbot.
syzbot engineers can be reached at syzk...@googlegroups.com.

To disable reminders for individual bugs, reply with the following command:
#syz set <Ref> no-reminders

To change bug's subsystems, reply with:
#syz set <Ref> subsystems: new-subsystem

You may send multiple commands in a single email message.