From: jsg <jsg@openbsd.org>
Date: Fri, 28 Jun 2024 03:35:06 +0000 (+0000)
Subject: drm/radeon: fix UBSAN warning in kv_dpm.c
X-Git-Url: http://artulab.com/gitweb/?a=commitdiff_plain;h=93f8bf6e41b6cd6704a54c2d90c2a7655c097bbf;p=openbsd

drm/radeon: fix UBSAN warning in kv_dpm.c

From Alex Deucher
9e57611182a817824a17b1c3dd300ee74a174b42 in linux-6.6.y/6.6.36
a498df5421fd737d11bfd152428ba6b1c8538321 in mainline linux
---

diff --git a/sys/dev/pci/drm/radeon/sumo_dpm.c b/sys/dev/pci/drm/radeon/sumo_dpm.c
index d49c145db43..f7f1ddc6cdd 100644
--- a/sys/dev/pci/drm/radeon/sumo_dpm.c
+++ b/sys/dev/pci/drm/radeon/sumo_dpm.c
@@ -1621,6 +1621,8 @@ 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 =