# DF-2044 Verification Verdict

**Severity:** Low
**Impact class:** panic
**Verification method:** Source-only confirmation (HW-gated, not triggerable on QEMU guest)

## Verdict: REPRODUCED (source-confirmed)

The bug is confirmed in the audited source at the cited path:line.
Triggerable but requires specific driver/config.

## Fix: Guard IRQ teardown/release with NULL check in mps_pci_free

Fix applied and validated in batch kernel build (rc=0, -Werror).

## Fix validation
All 41-fix patches batched into single `make -j6 nativekernel KERNCONF=X86_64_GENERIC` build.
Build result: **rc=0, 0 errors** (full -Werror clean).