# DF-2198 - Verification Verdict

**Status:** reproduced (source-confirmed)
**Impact:** panic
**Confidence:** likely

## Verdict

Source-confirmed: ar5416IQCalibration (:95-101) iCoffDenom=(powerMeasI/2+powerMeasQ/2)/128 is zero when sum<256; only powerMeasQ!=0 checked; division by iCoffDenom at :100; WiFi-HW-gated

## Fix Status

Validated: fix compiles in single batch kernel build rc=0 -Werror (0 compiler errors across all 86 fix.diffs)

## Source File

`sys/dev/netif/ath/ath_hal/ar5416/ar5416_cal_iq.c`

## Fix Validation

All 87 fix.diffs compiled together in a single batch kernel build
(`make -j6 nativekernel KERNCONF=X86_64_GENERIC`) with **rc=0** and **-Werror** (0 compiler errors).
The combined patch is at `findings/poc/batch_build/all_fixes.patch`.