# DF-4768 VERDICT

Status: INCONCLUSIVE-RUNTIME / SOURCE-CONFIRMED (no AMD GPU on the audit
guest; DF-1854/DF-1855 precedent).

amdgpu_psp.c:137-142 gates the response-status check on `ucode != NULL`,
so `psp_tmr_load` (:193, index 1) and `psp_asd_load` (:260, index 2) —
the two `ucode==NULL` callers — return success even when the PSP reports
a nonzero `resp.status`. `psp_hw_start` then continues into
`psp_np_fw_load` with no Trusted Memory Region established and no error
logged. Kernel memory-safety impact: none (correctness/security-state
issue only) ⇒ Info severity, confidence certain on the code, speculative
on real-world effect (depends on PSP FW ever rejecting TMR/ASD).

Fix: fix.diff (drop the `ucode &&` guard). Not runtime-validatable on
this guest.

## Fix status (batch validation)
Applied with the 36 sibling fix.diffs of this batch in findings/poc/_batch41/all_fixes.patch; single in-guest `make -j6 nativekernel KERNCONF=X86_64_GENERIC` completed RC=0 with zero errors under -Werror (full log: findings/poc/_batch41/fix_build8.log). Behavior A/B intentionally skipped for this Info-tier item.