linux-kernel - [PATCH] drm/msm/a6xx: fix a potential overflow issue

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Date:   Sat, 12 Sep 2020 18:25:58 +0800
From:   Zhenzhong Duan <zhenzhong.duan@...il.com>
To:     linux-kernel@...r.kernel.org
Cc:     robdclark@...il.com, sean@...rly.run, airlied@...ux.ie,
        daniel@...ll.ch, smasetty@...eaurora.org, jcrouse@...eaurora.org,
        jonathan@...ek.ca, linux-arm-msm@...r.kernel.org,
        dri-devel@...ts.freedesktop.org, freedreno@...ts.freedesktop.org,
        Zhenzhong Duan <zhenzhong.duan@...il.com>
Subject: [PATCH] drm/msm/a6xx: fix a potential overflow issue

It's allocating an array of a6xx_gpu_state_obj structure rathor than
its pointers.

This patch fix it.

Signed-off-by: Zhenzhong Duan <zhenzhong.duan@...il.com>
---
 drivers/gpu/drm/msm/adreno/a6xx_gpu_state.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/msm/adreno/a6xx_gpu_state.c b/drivers/gpu/drm/msm/adreno/a6xx_gpu_state.c
index b12f5b4..e9ede19 100644
--- a/drivers/gpu/drm/msm/adreno/a6xx_gpu_state.c
+++ b/drivers/gpu/drm/msm/adreno/a6xx_gpu_state.c
@@ -875,7 +875,7 @@ static void a6xx_get_indexed_registers(struct msm_gpu *gpu,
 	int i;
 
 	a6xx_state->indexed_regs = state_kcalloc(a6xx_state, count,
-		sizeof(a6xx_state->indexed_regs));
+		sizeof(*a6xx_state->indexed_regs));
 	if (!a6xx_state->indexed_regs)
 		return;
 
-- 
1.8.3.1