[PATCH AUTOSEL 5.4 3/6] drm/radeon: Fix UBSAN array-index-out-of-bounds for Radeon HD 5430

[Sasha Levin]

From: Mario Limonciello <mario.limonciello@xxxxxxx>

[ Upstream commit c63079c61177ba1b17fa05c6875699a36924fe39 ]

For pptable structs that use flexible array sizes, use flexible arrays.

Suggested-by: Felix Held <felix.held@xxxxxxx>
Link: https://gitlab.freedesktop.org/drm/amd/-/issues/2894
Signed-off-by: Mario Limonciello <mario.limonciello@xxxxxxx>
Acked-by: Alex Deucher <alexander.deucher@xxxxxxx>
Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
 drivers/gpu/drm/radeon/pptable.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/radeon/pptable.h b/drivers/gpu/drm/radeon/pptable.h
index 4c2eec49dadc9..94947229888ba 100644
--- a/drivers/gpu/drm/radeon/pptable.h
+++ b/drivers/gpu/drm/radeon/pptable.h
@@ -74,7 +74,7 @@ typedef struct _ATOM_PPLIB_THERMALCONTROLLER
 typedef struct _ATOM_PPLIB_STATE
 {
     UCHAR ucNonClockStateIndex;
-    UCHAR ucClockStateIndices[1]; // variable-sized
+    UCHAR ucClockStateIndices[]; // variable-sized
 } ATOM_PPLIB_STATE;
 
 
-- 
2.42.0