[syzbot] Monthly kernfs report (Mar 2026)

[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, 2 new issues were detected and 0 were fixed.
In total, 30 issues are still open and 26 have already been fixed.

Some of the still happening issues:

Ref  Crashes Repro Title
<1>  5411    Yes   possible deadlock in kernfs_iop_getattr
                   https://syzkaller.appspot.com/bug?extid=4bb2305559463e8f6a2a
<2>  1071    No    possible deadlock in kernfs_unlink_sibling (2)
                   https://syzkaller.appspot.com/bug?extid=a0ec0dbf8642550c291a
<3>  586     Yes   WARNING in kernfs_get (5)
                   https://syzkaller.appspot.com/bug?extid=2f44671e54488d20f0e6
<4>  581     Yes   WARNING in kernfs_remove_by_name_ns (3)
                   https://syzkaller.appspot.com/bug?extid=93cbdd0ab421adc5275d
<5>  460     Yes   INFO: rcu detected stall in hub_event (2)
                   https://syzkaller.appspot.com/bug?extid=039eab266c6321a174bd
<6>  442     Yes   possible deadlock in lookup_slow (3)
                   https://syzkaller.appspot.com/bug?extid=65459fd3b61877d717a3
<7>  295     Yes   possible deadlock in kernfs_remove
                   https://syzkaller.appspot.com/bug?extid=2d7d0fbb5fb979113ff3
<8>  197     No    possible deadlock in kernfs_fop_readdir
                   https://syzkaller.appspot.com/bug?extid=8fd10d8928ed1f715290
<9>  136     Yes   INFO: task hung in kernfs_dop_revalidate (4)
                   https://syzkaller.appspot.com/bug?extid=da20d108162166514db6
<10> 126     Yes   INFO: task hung in fdget_pos
                   https://syzkaller.appspot.com/bug?extid=0ee1ef35cf7e70ce55d7

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