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Subject: Re: [PATCH v6 1/2] drm/amd: validate user pitch alignment
To:     Yu Zhao <yuzhao@google.com>, David Airlie <airlied@linux.ie>,
        Daniel Vetter <daniel@ffwll.ch>,
        =?UTF-8?Q?Christian_K=c3=b6nig?= <christian.koenig@amd.com>,
        Alex Deucher <alexander.deucher@amd.com>
Cc:     David Zhou <David1.Zhou@amd.com>,
        Daniel Stone <daniels@collabora.com>,
        dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org,
        amd-gfx@lists.freedesktop.org, Samuel Li <Samuel.Li@amd.com>,
        Junwei Zhang <Jerry.Zhang@amd.com>, stable@vger.kernel.org,
        Harry Wentland <harry.wentland@amd.com>
References: <20181230010021.196990-1-yuzhao@google.com>
 <20190107225115.163992-1-yuzhao@google.com>
From:   =?UTF-8?Q?Michel_D=c3=a4nzer?= <michel@daenzer.net>
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Date:   Tue, 8 Jan 2019 16:25:45 +0100
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On 2019-01-07 11:51 p.m., Yu Zhao wrote:
> Userspace may request pitch alignment that is not supported by GPU.
> Some requests 32, but GPU ignores it and uses default 64 when cpp is
> 4. If GEM object is allocated based on the smaller alignment, GPU
> DMA will go out of bound.
> 
> Cc: stable@vger.kernel.org # v4.2+
> Signed-off-by: Yu Zhao <yuzhao@google.com>

Both patches applied to amd-staging-drm-next (should land in 5.0), thanks!


-- 
Earthling Michel Dänzer               |               http://www.amd.com
Libre software enthusiast             |             Mesa and X developer