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

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Message-ID: <20260121134037.kh3rfrgmwsylcl5r@inspiron>
Date: Wed, 21 Jan 2026 19:10:37 +0530
From: Prithvi <activprithvi@...il.com>
To: Bart Van Assche <bvanassche@....org>
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 Tue, Jan 20, 2026 at 05:48:16AM -0800, Bart Van Assche wrote:
> 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.

Sure. I will make v2 patch for the same.

Thanks,
Prithvi