linux-kernel - Re: [PATCH] platform/x86: ISST: fix use-after-free in tpmi_sst_dev

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Message-ID: <1d470a85-dd92-44d6-9900-db4c581b68c4@web.de>
Date: Fri, 17 May 2024 16:18:06 +0200
From: Markus Elfring <Markus.Elfring@....de>
To: Harshit Mogalapalli <harshit.m.mogalapalli@...cle.com>,
 platform-driver-x86@...r.kernel.org, kernel-janitors@...r.kernel.org,
 Hans de Goede <hdegoede@...hat.com>,
 Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>,
 Srinivas Pandruvada <srinivas.pandruvada@...ux.intel.com>,
 Zhang Rui <rui.zhang@...el.com>
Cc: LKML <linux-kernel@...r.kernel.org>,
 Dan Carpenter <dan.carpenter@...aro.org>, Dan Carpenter <error27@...il.com>
Subject: Re: [PATCH] platform/x86: ISST: fix use-after-free in
 tpmi_sst_dev_remove()

> In tpmi_sst_dev_remove(), tpmi_sst is dereferenced after being freed. Fix this by reordering the kfree() post the dereference.

I suggest to take preferred line lengths better into account
also for such a change description.
Thus the second sentence should be put into a subsequent line.
How do you think about the following wording approach?

   Move a kfree() call behind an assignment statement in the affected if branch.

Regards,
Markus