# DF-1273 - Verification Verdict

**Status:** reproduced (reproduced=1)
**Impact:** none
**Confidence:** likely

## Finding
Stale index used as voltage lookup key in CAC table population (functional correctness)

## Source Location
sys/dev/drm/amd/powerplay/smumgr/tonga_smumgr.c:423-427

## Verdict
Source-confirmed: Stale index used as voltage lookup key in CAC table population (functi. Fix applies and compiles.

## Fix Status
fixed: VALIDATED: fix.diff batch-compiled into single kernel build rc=0 -Werror on 6.5-DEVELOPMENT #0

## Summary
tonga_populate_cac_tables SMU7_VOLTAGE_CONTROL_BY_SVID2 branch at tonga_smumgr.c:423-427: phm_get_voltage_index(vddgfx_lookup_table,convert_to_vid(vddgfx_lookup_table->entries[index].us_cac_mid)) uses stale index from previous loop, not per-level VDDGFX voltage (data->vddgfx_voltage_table.entries[count].value). Correct pattern shown in VDDC branch (:411-412) and merged-mode (:430-432). No memory safety issue, functional correctness. Fix: use data->vddgfx_voltage_table.entries[count].value.