linux-kernel - [syzbot] Monthly kernfs report (Dec 2025)

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Message-ID: <694e3dc7.050a0220.35954c.0069.GAE@google.com>
Date: Thu, 25 Dec 2025 23:48:23 -0800
From: syzbot <syzbot+list65ba8c2c2dd949c15e0d@...kaller.appspotmail.com>
To: gregkh@...uxfoundation.org, linux-kernel@...r.kernel.org, 
	syzkaller-bugs@...glegroups.com, tj@...nel.org
Subject: [syzbot] Monthly kernfs report (Dec 2025)

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 25 have already been fixed.

Some of the still happening issues:

Ref  Crashes Repro Title
<1>  2949    Yes   possible deadlock in kernfs_iop_getattr
                   https://syzkaller.appspot.com/bug?extid=4bb2305559463e8f6a2a
<2>  553     Yes   WARNING in kernfs_get (5)
                   https://syzkaller.appspot.com/bug?extid=2f44671e54488d20f0e6
<3>  538     Yes   WARNING in kernfs_remove_by_name_ns (3)
                   https://syzkaller.appspot.com/bug?extid=93cbdd0ab421adc5275d
<4>  128     Yes   INFO: task hung in kernfs_dop_revalidate (4)
                   https://syzkaller.appspot.com/bug?extid=da20d108162166514db6
<5>  117     Yes   INFO: task hung in fdget_pos
                   https://syzkaller.appspot.com/bug?extid=0ee1ef35cf7e70ce55d7
<6>  105     No    possible deadlock in kernfs_fop_readdir
                   https://syzkaller.appspot.com/bug?extid=8fd10d8928ed1f715290
<7>  102     No    possible deadlock in kernfs_fop_write_iter (2)
                   https://syzkaller.appspot.com/bug?extid=1cfd86253864f61b533e
<8>  88      Yes   INFO: rcu detected stall in sys_unshare (9)
                   https://syzkaller.appspot.com/bug?extid=872bccd9a68c6ba47718
<9>  39      Yes   WARNING in kernfs_new_node (3)
                   https://syzkaller.appspot.com/bug?extid=306212936b13e520679d
<10> 31      Yes   INFO: task hung in kernfs_remove_by_name_ns (2)
                   https://syzkaller.appspot.com/bug?extid=6d5664213a6db9a5a72c

---
This report is generated by a bot. It may contain errors.
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