[PATCH 2/2] drm/radeon: fix UBSAN warning in kv_dpm.c
Mario Limonciello
mario.limonciello at amd.com
Fri Jun 14 19:42:26 UTC 2024
On 6/14/2024 13:33, Alex Deucher wrote:
> Adds bounds check for sumo_vid_mapping_entry.
>
> Signed-off-by: Alex Deucher <alexander.deucher at amd.com>
Reviewed-by: Mario Limonciello <mario.limonciello at amd.com>
> ---
> drivers/gpu/drm/radeon/sumo_dpm.c | 2 ++
> 1 file changed, 2 insertions(+)
>
> diff --git a/drivers/gpu/drm/radeon/sumo_dpm.c b/drivers/gpu/drm/radeon/sumo_dpm.c
> index 21d27e6235f3..b11f7c5bbcbe 100644
> --- a/drivers/gpu/drm/radeon/sumo_dpm.c
> +++ b/drivers/gpu/drm/radeon/sumo_dpm.c
> @@ -1619,6 +1619,8 @@ void sumo_construct_vid_mapping_table(struct radeon_device *rdev,
>
> 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 =
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