linux-kernel - Re: [PATCH] scsi: target: Fix recursive locking in __configfs_open

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Message-ID: <ac604919-1620-4fea-9401-869fd15f3533@acm.org>
Date: Tue, 20 Jan 2026 05:48:16 -0800
From: Bart Van Assche <bvanassche@....org>
To: Prithvi <activprithvi@...il.com>
Cc: martin.petersen@...cle.com, linux-scsi@...r.kernel.org,
 target-devel@...r.kernel.org, linux-kernel@...r.kernel.org, hch@....de,
 jlbec@...lplan.org, linux-fsdevel@...r.kernel.org,
 linux-kernel-mentees@...ts.linux.dev, skhan@...uxfoundation.org,
 david.hunter.linux@...il.com, khalid@...nel.org,
 syzbot+f6e8174215573a84b797@...kaller.appspotmail.com, stable@...r.kernel.org
Subject: Re: [PATCH] scsi: target: Fix recursive locking in
 __configfs_open_file()

On 1/19/26 10:50 AM, Prithvi wrote:
>   Possible unsafe locking scenario:
> 
>         CPU0
>         ----
>    lock(&p->frag_sem);
>    lock(&p->frag_sem);
The least intrusive way to suppress this type of lockdep complaints is
by using lockdep_register_key() and lockdep_unregister_key().

Thanks,

Bart.