linux-kernel - Re: [PATCH v4 01/22] drm/msm/a6xx: Fix out of bound IO access in a6xx_get_gmu

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Message-ID: <0167a373-79e2-49f7-a765-d3a770ff2395@oss.qualcomm.com>
Date: Tue, 18 Nov 2025 11:09:39 +0100
From: Konrad Dybcio <konrad.dybcio@....qualcomm.com>
To: Akhil P Oommen <akhilpo@....qualcomm.com>,
        Rob Clark <robin.clark@....qualcomm.com>,
        Bjorn Andersson <andersson@...nel.org>,
        Konrad Dybcio <konradybcio@...nel.org>, Sean Paul <sean@...rly.run>,
        Dmitry Baryshkov <lumag@...nel.org>,
        Abhinav Kumar
 <abhinav.kumar@...ux.dev>,
        Jessica Zhang <jesszhan0024@...il.com>,
        Marijn Suijten <marijn.suijten@...ainline.org>,
        David Airlie <airlied@...il.com>, Simona Vetter <simona@...ll.ch>,
        Jonathan Marek <jonathan@...ek.ca>,
        Jordan Crouse
 <jordan@...micpenguin.net>,
        Will Deacon <will@...nel.org>, Robin Murphy <robin.murphy@....com>,
        Joerg Roedel <joro@...tes.org>, Rob Herring <robh@...nel.org>,
        Krzysztof Kozlowski <krzk+dt@...nel.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
        Maxime Ripard <mripard@...nel.org>,
        Thomas Zimmermann <tzimmermann@...e.de>,
        Connor Abbott <cwabbott0@...il.com>
Cc: linux-arm-msm@...r.kernel.org, linux-kernel@...r.kernel.org,
        dri-devel@...ts.freedesktop.org, freedreno@...ts.freedesktop.org,
        linux-arm-kernel@...ts.infradead.org, iommu@...ts.linux.dev,
        devicetree@...r.kernel.org, stable@...r.kernel.org
Subject: Re: [PATCH v4 01/22] drm/msm/a6xx: Fix out of bound IO access in
 a6xx_get_gmu_registers

On 11/18/25 9:50 AM, Akhil P Oommen wrote:
> REG_A6XX_GMU_AO_AHB_FENCE_CTRL register falls under GMU's register
> range. So, use gmu_write() routines to write to this register.
> 
> Fixes: 1707add81551 ("drm/msm/a6xx: Add a6xx gpu state")
> Cc: stable@...r.kernel.org
> Signed-off-by: Akhil P Oommen <akhilpo@....qualcomm.com>
> ---

Reviewed-by: Konrad Dybcio <konrad.dybcio@....qualcomm.com>

Konrad