4.19-stable review patch. If anyone has any objections, please let me know.
------------------
From: Alex Deucher <alexander.deucher@xxxxxxx>
commit a498df5421fd737d11bfd152428ba6b1c8538321 upstream.
Adds bounds check for sumo_vid_mapping_entry.
Reviewed-by: Mario Limonciello <mario.limonciello@xxxxxxx>
Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/gpu/drm/radeon/sumo_dpm.c | 2 ++
1 file changed, 2 insertions(+)
--- a/drivers/gpu/drm/radeon/sumo_dpm.c
+++ b/drivers/gpu/drm/radeon/sumo_dpm.c
@@ -1622,6 +1622,8 @@ void sumo_construct_vid_mapping_table(st
for (i = 0; i < SUMO_MAX_HARDWARE_POWERLEVELS; i++) {
if (table[i].ulSupportedSCLK != 0) {
+ if (table[i].usVoltageIndex >= SUMO_MAX_NUMBER_VOLTAGES)
+ continue;
vid_mapping_table->entries[table[i].usVoltageIndex].vid_7bit =
table[i].usVoltageID;
vid_mapping_table->entries[table[i].usVoltageIndex].vid_2bit =
