From: Akhil P Oommen Date: Tue, 18 Nov 2025 08:50:28 +0000 (+0530) Subject: drm/msm/a6xx: Fix out of bound IO access in a6xx_get_gmu_registers X-Git-Tag: v5.10.248~115 X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=96fa4c8c3b31bcc2967d68b82a128cce14ea789e;p=thirdparty%2Fkernel%2Fstable.git drm/msm/a6xx: Fix out of bound IO access in a6xx_get_gmu_registers commit 779b68a5bf2764c8ed3aa800e41ba0d5d007e1e7 upstream. 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@vger.kernel.org Signed-off-by: Akhil P Oommen Reviewed-by: Konrad Dybcio Patchwork: https://patchwork.freedesktop.org/patch/688993/ Message-ID: <20251118-kaana-gpu-support-v4-1-86eeb8e93fb6@oss.qualcomm.com> Signed-off-by: Rob Clark Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/gpu/drm/msm/adreno/a6xx_gpu_state.c b/drivers/gpu/drm/msm/adreno/a6xx_gpu_state.c index 87d845d6d3bc3..0db27699025ab 100644 --- a/drivers/gpu/drm/msm/adreno/a6xx_gpu_state.c +++ b/drivers/gpu/drm/msm/adreno/a6xx_gpu_state.c @@ -794,7 +794,7 @@ static void a6xx_get_gmu_registers(struct msm_gpu *gpu, return; /* Set the fence to ALLOW mode so we can access the registers */ - gpu_write(gpu, REG_A6XX_GMU_AO_AHB_FENCE_CTRL, 0); + gmu_write(&a6xx_gpu->gmu, REG_A6XX_GMU_AO_AHB_FENCE_CTRL, 0); _a6xx_get_gmu_registers(gpu, a6xx_state, &a6xx_gmu_reglist[2], &a6xx_state->gmu_registers[2], false);