[syzbot] Monthly kernfs report (Feb 2026)

[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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