linux-kernel - Re: [PATCH] scsi: pm8001: Fix potential TOCTOU race in pm8001_find

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Message-ID: <10e91bfd-7b8b-414d-9d33-30498f5ca018@web.de>
Date: Sun, 18 Jan 2026 10:42:07 +0100
From: Markus Elfring <Markus.Elfring@....de>
To: Chengfeng Ye <dg573847474@...il.com>, linux-scsi@...r.kernel.org
Cc: LKML <linux-kernel@...r.kernel.org>,
 Jack Wang <jinpu.wang@...ud.ionos.com>,
 James Bottomley <James.Bottomley@...senPartnership.com>,
 "Martin K. Petersen" <martin.petersen@...cle.com>
Subject: Re: [PATCH] scsi: pm8001: Fix potential TOCTOU race in
 pm8001_find_tag

…
> Fix this by using READ_ONCE() to read task->lldd_task exactly once,
> eliminating the TOCTOU window. Also use WRITE_ONCE() in
> pm8001_ccb_task_free() for proper memory ordering.

How do you think about to add any tags (like “Fixes” and “Cc”) accordingly?

Regards,
Markus