[syzbot] Monthly kernfs report (Oct 2025)

[syzbot]

Hello kernfs maintainers/developers,

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

During the period, 1 new issues were detected and 0 were fixed.
In total, 26 issues are still open and 25 have already been fixed.

Some of the still happening issues:

Ref  Crashes Repro Title
<1>  2087    Yes   possible deadlock in kernfs_iop_getattr
                   https://syzkaller.appspot.com/bug?extid=4bb2305559463e8f6a2a
<2>  504     Yes   WARNING in kernfs_remove_by_name_ns (3)
                   https://syzkaller.appspot.com/bug?extid=93cbdd0ab421adc5275d
<3>  500     Yes   WARNING in kernfs_get (5)
                   https://syzkaller.appspot.com/bug?extid=2f44671e54488d20f0e6
<4>  112     Yes   INFO: task hung in fdget_pos
                   https://syzkaller.appspot.com/bug?extid=0ee1ef35cf7e70ce55d7
<5>  78      No    possible deadlock in kernfs_fop_write_iter (2)
                   https://syzkaller.appspot.com/bug?extid=1cfd86253864f61b533e
<6>  65      No    possible deadlock in kernfs_fop_readdir
                   https://syzkaller.appspot.com/bug?extid=8fd10d8928ed1f715290
<7>  59      Yes   possible deadlock in walk_component (4)
                   https://syzkaller.appspot.com/bug?extid=b4567a8b2d2ad5f9dd06
<8>  42      Yes   INFO: rcu detected stall in hub_event (2)
                   https://syzkaller.appspot.com/bug?extid=039eab266c6321a174bd
<9>  30      Yes   INFO: task hung in kernfs_remove_by_name_ns (2)
                   https://syzkaller.appspot.com/bug?extid=6d5664213a6db9a5a72c
<10> 23      Yes   possible deadlock in kernfs_seq_start
                   https://syzkaller.appspot.com/bug?extid=4c493dcd5a68168a94b2

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