linux-kernel - Re: [PATCH] dmaengine: idxd: Fix potential null dereference on pointer status

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Message-ID: <YH6p4e/BtoYp8jH7@vkoul-mobl.Dlink>
Date:   Tue, 20 Apr 2021 15:46:01 +0530
From:   Vinod Koul <vkoul@...nel.org>
To:     Colin King <colin.king@...onical.com>
Cc:     Dave Jiang <dave.jiang@...el.com>, dmaengine@...r.kernel.org,
        kernel-janitors@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] dmaengine: idxd: Fix potential null dereference on
 pointer status

On 15-04-21, 12:06, Colin King wrote:
> From: Colin Ian King <colin.king@...onical.com>
> 
> There are calls to idxd_cmd_exec that pass a null status pointer however
> a recent commit has added an assignment to *status that can end up
> with a null pointer dereference.  The function expects a null status
> pointer sometimes as there is a later assignment to *status where
> status is first null checked.  Fix the issue by null checking status
> before making the assignment.

Applied, thanks

-- 
~Vinod