From: Ma Jun <jun....@amd.com>
[ Upstream commit d768394fa99467bcf2703bde74ddc96eeb0b71fa ]
Check the fb_channel_number range to avoid the array out-of-bounds
read error
Signed-off-by: Ma Jun <jun....@amd.com>
Reviewed-by: Tim Huang <tim.hu...@amd.com>
Signed-off-by: Alex Deucher <alexander.deuc...@amd.com>
Signed-off-by: Sasha Levin <sas...@kernel.org>
---
drivers/gpu/drm/amd/amdgpu/df_v1_7.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/gpu/drm/amd/amdgpu/df_v1_7.c
b/drivers/gpu/drm/amd/amdgpu/df_v1_7.c
index 5dfab80ffff21..cd298556f7a60 100644
--- a/drivers/gpu/drm/amd/amdgpu/df_v1_7.c
+++ b/drivers/gpu/drm/amd/amdgpu/df_v1_7.c
@@ -70,6 +70,8 @@ static u32 df_v1_7_get_hbm_channel_number(struct
amdgpu_device *adev)
int fb_channel_number;
fb_channel_number = adev->df.funcs->get_fb_channel_number(adev);
+ if (fb_channel_number >= ARRAY_SIZE(df_v1_7_channel_number))
+ fb_channel_number = 0;
return df_v1_7_channel_number[fb_channel_number];
}
--
2.43.0
