Add warning report collector for Yocto build logs

README.md

@@ -62,6 +62,12 @@ Open a ready-to-use Yocto shell (env preloaded):
 bitbake linux-xlnx
 ```
 
+Collect warning summary after a build:
+
+```bash
+./scripts/collect_warning_report.sh
+```
+
 Bootstrap workspace in developer mode:
 
 ```bash

scripts/collect_warning_report.sh

+#!/usr/bin/env bash
+set -euo pipefail
+
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+REPO_ROOT="$(cd "${SCRIPT_DIR}/.." && pwd)"
+WORKSPACE="${REPO_ROOT}/workspace"
+LOG_DIR="${REPO_ROOT}/logs"
+TMP_WORK="${WORKSPACE}/poky/build/tmp/work"
+
+mkdir -p "${LOG_DIR}"
+
+REPORT_TS="$(date +%Y%m%d_%H%M%S)"
+REPORT_FILE="${LOG_DIR}/warning_report_${REPORT_TS}.md"
+LATEST_LINK="${LOG_DIR}/warning_report_latest.md"
+
+TMP_DIR="$(mktemp -d)"
+trap 'rm -rf "${TMP_DIR}"' EXIT
+
+DEMOTE_RAW="${TMP_DIR}/demote.raw"
+CHECKSUM_RAW="${TMP_DIR}/checksum.raw"
+FUZZ_RAW="${TMP_DIR}/fuzz.raw"
+HOST_CONTAM_RAW="${TMP_DIR}/host_contam.raw"
+
+: > "${DEMOTE_RAW}"
+: > "${CHECKSUM_RAW}"
+: > "${FUZZ_RAW}"
+: > "${HOST_CONTAM_RAW}"
+
+if [[ -d "${TMP_WORK}" ]]; then
+  rg -n "Tried to access '.*' as root, demoting to a normal user" "${TMP_WORK}" -S > "${DEMOTE_RAW}" || true
+fi
+
+shopt -s nullglob
+stage_logs=("${LOG_DIR}"/build_stage1_*.log)
+shopt -u nullglob
+
+if [[ ${#stage_logs[@]} -gt 0 ]]; then
+  rg -n "Checksum mismatch for local file" "${stage_logs[@]}" -S > "${CHECKSUM_RAW}" || true
+  rg -n "patch-fuzz|Fuzz detected|Hunk #[0-9]+ succeeded at .* fuzz" "${stage_logs[@]}" -S > "${FUZZ_RAW}" || true
+  rg -n "host-user-contaminated|is owned by uid [0-9]+, which is the same as the user running bitbake" "${stage_logs[@]}" -S > "${HOST_CONTAM_RAW}" || true
+fi
+
+demote_total="$(wc -l < "${DEMOTE_RAW}" | tr -d ' ')"
+checksum_total="$(wc -l < "${CHECKSUM_RAW}" | tr -d ' ')"
+fuzz_total="$(wc -l < "${FUZZ_RAW}" | tr -d ' ')"
+host_contam_total="$(wc -l < "${HOST_CONTAM_RAW}" | tr -d ' ')"
+
+demote_paths="${TMP_DIR}/demote_paths.txt"
+demote_recipe_task="${TMP_DIR}/demote_recipe_task.txt"
+checksum_recipe="${TMP_DIR}/checksum_recipe.txt"
+
+if [[ "${demote_total}" -gt 0 ]]; then
+  sed -n "s#.*Tried to access '\\([^']*\\)'.*#\\1#p" "${DEMOTE_RAW}" \
+    | sort | uniq -c | sort -nr > "${demote_paths}"
+
+  sed -E -n "s#^(.*/tmp/work/[^/]+/([^/]+)/([^/]+)/temp/log\\.(do_[^.]+)\\.[^:]+):.*#\\2\\t\\3\\t\\4#p" "${DEMOTE_RAW}" \
+    | sort | uniq -c | sort -nr > "${demote_recipe_task}"
+fi
+
+if [[ "${checksum_total}" -gt 0 ]]; then
+  sed -E -n "s#.*WARNING: ([^ ]+) do_fetch: Checksum mismatch.*#\\1#p" "${CHECKSUM_RAW}" \
+    | sort | uniq -c | sort -nr > "${checksum_recipe}"
+fi
+
+{
+  echo "# Warning Report"
+  echo
+  echo "- Generated: $(date -Is)"
+  echo "- Workspace: ${WORKSPACE}"
+  echo "- Stage logs scanned: ${#stage_logs[@]}"
+  echo
+  echo "## Summary"
+  echo
+  echo "- Root demotion warnings: ${demote_total}"
+  echo "- Checksum mismatch warnings: ${checksum_total}"
+  echo "- Patch fuzz warnings: ${fuzz_total}"
+  echo "- Host contamination warnings: ${host_contam_total}"
+  echo
+
+  if [[ "${demote_total}" -gt 0 ]]; then
+    echo "## Root Demotion by External Path (top 25)"
+    echo
+    echo '```text'
+    sed -n '1,25p' "${demote_paths}"
+    echo '```'
+    echo
+
+    echo "## Root Demotion by Recipe / Version / Task (top 40)"
+    echo
+    echo '```text'
+    sed -n '1,40p' "${demote_recipe_task}"
+    echo '```'
+    echo
+
+    echo "## Root Demotion Sample Source Lines"
+    echo
+    echo '```text'
+    sed -n '1,40p' "${DEMOTE_RAW}"
+    echo '```'
+    echo
+  fi
+
+  if [[ "${checksum_total}" -gt 0 ]]; then
+    echo "## Checksum Mismatch by Recipe"
+    echo
+    echo '```text'
+    cat "${checksum_recipe}"
+    echo '```'
+    echo
+    echo "## Checksum Mismatch Sample Lines"
+    echo
+    echo '```text'
+    sed -n '1,40p' "${CHECKSUM_RAW}"
+    echo '```'
+    echo
+  fi
+
+  if [[ "${fuzz_total}" -gt 0 ]]; then
+    echo "## Patch Fuzz Sample Lines"
+    echo
+    echo '```text'
+    sed -n '1,40p' "${FUZZ_RAW}"
+    echo '```'
+    echo
+  fi
+
+  if [[ "${host_contam_total}" -gt 0 ]]; then
+    echo "## Host Contamination Sample Lines"
+    echo
+    echo '```text'
+    sed -n '1,40p' "${HOST_CONTAM_RAW}"
+    echo '```'
+    echo
+  fi
+} > "${REPORT_FILE}"
+
+ln -sfn "$(basename "${REPORT_FILE}")" "${LATEST_LINK}"
+
+echo "Report: ${REPORT_FILE}"
+echo "Latest: ${LATEST_LINK}"