From: Alex Deucher Date: Mon, 20 May 2024 13:11:45 +0000 (-0400) Subject: drm/radeon: fix UBSAN warning in kv_dpm.c X-Git-Tag: v6.10-rc5~19^2~1^2~3 X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=a498df5421fd737d11bfd152428ba6b1c8538321;p=thirdparty%2Fkernel%2Flinux.git drm/radeon: fix UBSAN warning in kv_dpm.c Adds bounds check for sumo_vid_mapping_entry. Reviewed-by: Mario Limonciello Signed-off-by: Alex Deucher Cc: stable@vger.kernel.org --- diff --git a/drivers/gpu/drm/radeon/sumo_dpm.c b/drivers/gpu/drm/radeon/sumo_dpm.c index 21d27e6235f39..b11f7c5bbcbe9 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 =