[syzbot] Monthly kernfs report (May 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, 25 issues are still open and 26 have already been fixed.
There are also 3 low-priority issues.

Some of the still happening issues:

Ref  Crashes Repro Title
<1>  1217    Yes   possible deadlock in kernfs_remove
                   https://syzkaller.appspot.com/bug?extid=2d7d0fbb5fb979113ff3
<2>  650     Yes   WARNING in kernfs_get (5)
                   https://syzkaller.appspot.com/bug?extid=2f44671e54488d20f0e6
<3>  222     No    possible deadlock in kernfs_fop_readdir
                   https://syzkaller.appspot.com/bug?extid=8fd10d8928ed1f715290
<4>  139     Yes   INFO: task hung in kernfs_dop_revalidate (4)
                   https://syzkaller.appspot.com/bug?extid=da20d108162166514db6
<5>  8       Yes   INFO: rcu detected stall in kernfs_fop_open (7)
                   https://syzkaller.appspot.com/bug?extid=19d01f6082ec61dd45b2
<6>  4863    No    possible deadlock in kernfs_link_sibling (2)
                   https://syzkaller.appspot.com/bug?extid=dd764a450d93885d847f
<7>  605     Yes   WARNING in kernfs_remove_by_name_ns (3)
                   https://syzkaller.appspot.com/bug?extid=93cbdd0ab421adc5275d
<8>  129     Yes   INFO: task hung in fdget_pos
                   https://syzkaller.appspot.com/bug?extid=0ee1ef35cf7e70ce55d7
<9>  67      Yes   possible deadlock in kernfs_seq_start
                   https://syzkaller.appspot.com/bug?extid=4c493dcd5a68168a94b2
<10> 40      Yes   INFO: task hung in kernfs_remove_by_name_ns (2)
                   https://syzkaller.appspot.com/bug?extid=6d5664213a6db9a5a72c

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