[syzbot] Monthly kernfs report (Sep 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, 0 new issues were detected and 1 were fixed.
In total, 22 issues are still open and 31 have already been fixed.
There are also 10 low-priority issues.

Some of the still happening issues:

Ref  Crashes Repro Title
<1>  1843    Yes   possible deadlock in kernfs_remove
                   https://syzkaller.appspot.com/bug?extid=2d7d0fbb5fb979113ff3
<2>  1490    No    possible deadlock in kernfs_remove_by_name_ns (2)
                   https://syzkaller.appspot.com/bug?extid=b50eba6bf6cd3f8ba7d0
<3>  237     No    possible deadlock in kernfs_fop_readdir
                   https://syzkaller.appspot.com/bug?extid=8fd10d8928ed1f715290
<4>  178     Yes   INFO: rcu detected stall in sys_unshare (9)
                   https://syzkaller.appspot.com/bug?extid=872bccd9a68c6ba47718
<5>  652     Yes   WARNING in kernfs_remove_by_name_ns (3)
                   https://syzkaller.appspot.com/bug?extid=93cbdd0ab421adc5275d
<6>  167     Yes   INFO: task hung in fdget_pos
                   https://syzkaller.appspot.com/bug?extid=0ee1ef35cf7e70ce55d7
<7>  104     Yes   INFO: task hung in kernfs_add_one
                   https://syzkaller.appspot.com/bug?extid=e4804edf2708e8b7d2a5
<8>  75      Yes   possible deadlock in kernfs_seq_start
                   https://syzkaller.appspot.com/bug?extid=4c493dcd5a68168a94b2
<9>  60      Yes   INFO: rcu detected stall in sys_readlink (5)
                   https://syzkaller.appspot.com/bug?extid=23e14ec82f3c8692eaa9
<10> 37      Yes   INFO: rcu detected stall in cleanup_net (8)
                   https://syzkaller.appspot.com/bug?extid=0604401cc084920f6c3d

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