[syzbot] Monthly kernfs report (Jul 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 1 were fixed.
In total, 26 issues are still open and 28 have already been fixed.
There are also 5 low-priority issues.

Some of the still happening issues:

Ref Crashes Repro Title
<1> 1533 Yes possible deadlock in kernfs_remove
https://syzkaller.appspot.com/bug?extid=2d7d0fbb5fb979113ff3
<2> 708 Yes WARNING in kernfs_get (5)
https://syzkaller.appspot.com/bug?extid=2f44671e54488d20f0e6
<3> 228 No possible deadlock in kernfs_fop_readdir
https://syzkaller.appspot.com/bug?extid=8fd10d8928ed1f715290
<4> 156 Yes INFO: rcu detected stall in sys_unshare (9)
https://syzkaller.appspot.com/bug?extid=872bccd9a68c6ba47718
<5> 144 Yes INFO: task hung in kernfs_dop_revalidate (4)
https://syzkaller.appspot.com/bug?extid=da20d108162166514db6
<6> 19 No possible deadlock in __kernfs_remove (3)
https://syzkaller.appspot.com/bug?extid=1075f6dc93f398c1857e
<7> 10 Yes INFO: rcu detected stall in kernfs_fop_open (7)
https://syzkaller.appspot.com/bug?extid=19d01f6082ec61dd45b2
<8> 617 Yes WARNING in kernfs_remove_by_name_ns (3)
https://syzkaller.appspot.com/bug?extid=93cbdd0ab421adc5275d
<9> 135 Yes INFO: task hung in fdget_pos
https://syzkaller.appspot.com/bug?extid=0ee1ef35cf7e70ce55d7
<10> 100 Yes INFO: task hung in kernfs_add_one
https://syzkaller.appspot.com/bug?extid=e4804edf2708e8b7d2a5

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