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Commit 4ad7d490 authored by Alex Deucher's avatar Alex Deucher Committed by Greg Kroah-Hartman
Browse files

drm/amdgpu: fix UBSAN warning in kv_dpm.c 

[ Upstream commit f0d576f840153392d04b2d52cf3adab8f62e8cb6 ]

Adds bounds check for sumo_vid_mapping_entry.

Closes: https://gitlab.freedesktop.org/drm/amd/-/issues/3392


Reviewed-by: default avatarMario Limonciello <mario.limonciello@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Signed-off-by: default avatarSasha Levin <sashal@kernel.org>
parent 61c552e4

drivers/gpu/drm/amd/amdgpu/kv_dpm.c

+2 −0
Original line number Original line Diff line number Diff line
@@ -164,6 +164,8 @@ static void sumo_construct_vid_mapping_table(struct amdgpu_device *adev, 




	for (i = 0; i < SUMO_MAX_HARDWARE_POWERLEVELS; i++) {

	for (i = 0; i < SUMO_MAX_HARDWARE_POWERLEVELS; i++) {

		if (table[i].ulSupportedSCLK != 0) {

		if (table[i].ulSupportedSCLK != 0) {

			if (table[i].usVoltageIndex >= SUMO_MAX_NUMBER_VOLTAGES)

				continue;

			vid_mapping_table->entries[table[i].usVoltageIndex].vid_7bit =

			vid_mapping_table->entries[table[i].usVoltageIndex].vid_7bit =

				table[i].usVoltageID;

				table[i].usVoltageID;

			vid_mapping_table->entries[table[i].usVoltageIndex].vid_2bit =

			vid_mapping_table->entries[table[i].usVoltageIndex].vid_2bit =