[syzbot] Monthly kernfs report (Feb 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> 4323 Yes possible deadlock in kernfs_iop_getattr
https://syzkaller.appspot.com/bug?extid=4bb2305559463e8f6a2a
<2> 577 Yes WARNING in kernfs_get (5)
https://syzkaller.appspot.com/bug?extid=2f44671e54488d20f0e6
<3> 570 Yes WARNING in kernfs_remove_by_name_ns (3)
https://syzkaller.appspot.com/bug?extid=93cbdd0ab421adc5275d
<4> 417 No possible deadlock in lookup_slow (3)
https://syzkaller.appspot.com/bug?extid=65459fd3b61877d717a3
<5> 143 No possible deadlock in kernfs_fop_readdir
https://syzkaller.appspot.com/bug?extid=8fd10d8928ed1f715290
<6> 133 Yes INFO: task hung in kernfs_dop_revalidate (4)
https://syzkaller.appspot.com/bug?extid=da20d108162166514db6
<7> 123 Yes INFO: task hung in fdget_pos
https://syzkaller.appspot.com/bug?extid=0ee1ef35cf7e70ce55d7
<8> 108 Yes INFO: rcu detected stall in sys_unshare (9)
https://syzkaller.appspot.com/bug?extid=872bccd9a68c6ba47718
<9> 81 Yes INFO: task hung in kernfs_add_one
https://syzkaller.appspot.com/bug?extid=e4804edf2708e8b7d2a5
<10> 38 Yes possible deadlock in kernfs_seq_start
https://syzkaller.appspot.com/bug?extid=4c493dcd5a68168a94b2

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