linux-kernel - Re: [PATCH] drm/panthor: avoid garbage value in panthor_ioctl_dev

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Message-ID: <20250207174456.04eeee9c@collabora.com>
Date: Fri, 7 Feb 2025 17:44:56 +0100
From: Boris Brezillon <boris.brezillon@...labora.com>
To: Dan Carpenter <dan.carpenter@...aro.org>
Cc: Su Hui <suhui@...china.com>, steven.price@....com, liviu.dudau@....com,
 maarten.lankhorst@...ux.intel.com, mripard@...nel.org, tzimmermann@...e.de,
 airlied@...il.com, simona@...ll.ch, mary.guillemard@...labora.com,
 dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org,
 kernel-janitors@...r.kernel.org
Subject: Re: [PATCH] drm/panthor: avoid garbage value in
 panthor_ioctl_dev_query()

On Mon, 20 Jan 2025 10:21:49 +0300
Dan Carpenter <dan.carpenter@...aro.org> wrote:

> On Sun, Jan 19, 2025 at 10:58:29AM +0800, Su Hui wrote:
> > 'priorities_info' is uninitialized, and the uninitialized value is copied
> > to user object when calling PANTHOR_UOBJ_SET(). Using memset to initialize
> > 'priorities_info' to avoid this garbage value problem.
> > 
> > Fixes: f70000ef2352 ("drm/panthor: Add DEV_QUERY_GROUP_PRIORITIES_INFO dev query")
> > Signed-off-by: Su Hui <suhui@...china.com>  
> 
> Reviewed-by: Dan Carpenter <dan.carpenter@...aro.org>

Queued to drm-misc-fixes.

> 
> How did you find this bug?
> 
> regards,
> dan carpenter
>