diff options
Diffstat (limited to 'gnu/packages/patches/spectre-meltdown-checker-externalize-fwdb.patch')
| -rw-r--r-- | gnu/packages/patches/spectre-meltdown-checker-externalize-fwdb.patch | 244 |
1 files changed, 244 insertions, 0 deletions
diff --git a/gnu/packages/patches/spectre-meltdown-checker-externalize-fwdb.patch b/gnu/packages/patches/spectre-meltdown-checker-externalize-fwdb.patch new file mode 100644 index 0000000000..cce70b880f --- /dev/null +++ b/gnu/packages/patches/spectre-meltdown-checker-externalize-fwdb.patch @@ -0,0 +1,244 @@ +From 340b08737e552c3c186863d76d123808d853a159 Mon Sep 17 00:00:00 2001 +From: Hilton Chain <hako@ultrarare.space> +Date: Sat, 12 Nov 2022 22:45:24 +0800 +Subject: [PATCH] Replace fwdb downloader with a local file option. + +Also warn about non-free software. +--- + spectre-meltdown-checker.sh | 180 +++--------------------------------- + 1 file changed, 15 insertions(+), 165 deletions(-) + +diff --git a/spectre-meltdown-checker.sh b/spectre-meltdown-checker.sh +index 30f760c..ce46970 100755 +--- a/spectre-meltdown-checker.sh ++++ b/spectre-meltdown-checker.sh +@@ -22,8 +22,6 @@ exit_cleanup() + [ -n "${dumped_config:-}" ] && [ -f "$dumped_config" ] && rm -f "$dumped_config" + [ -n "${kerneltmp:-}" ] && [ -f "$kerneltmp" ] && rm -f "$kerneltmp" + [ -n "${kerneltmp2:-}" ] && [ -f "$kerneltmp2" ] && rm -f "$kerneltmp2" +- [ -n "${mcedb_tmp:-}" ] && [ -f "$mcedb_tmp" ] && rm -f "$mcedb_tmp" +- [ -n "${intel_tmp:-}" ] && [ -d "$intel_tmp" ] && rm -rf "$intel_tmp" + [ "${mounted_debugfs:-}" = 1 ] && umount /sys/kernel/debug 2>/dev/null + [ "${mounted_procfs:-}" = 1 ] && umount "$procfs" 2>/dev/null + [ "${insmod_cpuid:-}" = 1 ] && rmmod cpuid 2>/dev/null +@@ -93,9 +91,9 @@ show_usage() + --vmm [auto,yes,no] override the detection of the presence of a hypervisor, default: auto + --allow-msr-write allow probing for write-only MSRs, this might produce kernel logs or be blocked by your system + --cpu [#,all] interact with CPUID and MSR of CPU core number #, or all (default: CPU core 0) +- --update-fwdb update our local copy of the CPU microcodes versions database (using the awesome +- MCExtractor project and the Intel firmwares GitHub repository) +- --update-builtin-fwdb same as --update-fwdb but update builtin DB inside the script itself ++ --with-fwdb FILE read CPU microcode version information from FILE ++ Note that most CPU microcode is distributed as binaries without source -- relying on ++ such non-free firmware as sole protection against security vulnerabilities is ill-advised. + --dump-mock-data used to mimick a CPU on an other system, mainly used to help debugging this script + + Return codes: +@@ -837,147 +833,6 @@ show_header() + _info + } + +-[ -z "$HOME" ] && HOME="$(getent passwd "$(whoami)" | cut -d: -f6)" +-mcedb_cache="$HOME/.mcedb" +-update_fwdb() +-{ +- show_header +- +- set -e +- +- if [ -r "$mcedb_cache" ]; then +- previous_dbversion=$(awk '/^# %%% MCEDB / { print $4 }' "$mcedb_cache") +- fi +- +- # first, download the MCE.db from the excellent platomav's MCExtractor project +- mcedb_tmp="$(mktemp -t smc-mcedb-XXXXXX)" +- mcedb_url='https://github.com/platomav/MCExtractor/raw/master/MCE.db' +- _info_nol "Fetching MCE.db from the MCExtractor project... " +- if command -v wget >/dev/null 2>&1; then +- wget -q "$mcedb_url" -O "$mcedb_tmp"; ret=$? +- elif command -v curl >/dev/null 2>&1; then +- curl -sL "$mcedb_url" -o "$mcedb_tmp"; ret=$? +- elif command -v fetch >/dev/null 2>&1; then +- fetch -q "$mcedb_url" -o "$mcedb_tmp"; ret=$? +- else +- echo ERROR "please install one of \`wget\`, \`curl\` of \`fetch\` programs" +- return 1 +- fi +- if [ "$ret" != 0 ]; then +- echo ERROR "error $ret while downloading MCE.db" +- return $ret +- fi +- echo DONE +- +- # second, get the Intel firmwares from GitHub +- intel_tmp="$(mktemp -d -t smc-intelfw-XXXXXX)" +- intel_url="https://github.com/intel/Intel-Linux-Processor-Microcode-Data-Files/archive/main.zip" +- _info_nol "Fetching Intel firmwares... " +- ## https://github.com/intel/Intel-Linux-Processor-Microcode-Data-Files.git +- if command -v wget >/dev/null 2>&1; then +- wget -q "$intel_url" -O "$intel_tmp/fw.zip"; ret=$? +- elif command -v curl >/dev/null 2>&1; then +- curl -sL "$intel_url" -o "$intel_tmp/fw.zip"; ret=$? +- elif command -v fetch >/dev/null 2>&1; then +- fetch -q "$intel_url" -o "$intel_tmp/fw.zip"; ret=$? +- else +- echo ERROR "please install one of \`wget\`, \`curl\` of \`fetch\` programs" +- return 1 +- fi +- if [ "$ret" != 0 ]; then +- echo ERROR "error $ret while downloading Intel firmwares" +- return $ret +- fi +- echo DONE +- +- # now extract MCEdb contents using sqlite +- _info_nol "Extracting MCEdb data... " +- if ! command -v sqlite3 >/dev/null 2>&1; then +- echo ERROR "please install the \`sqlite3\` program" +- return 1 +- fi +- mcedb_revision=$(sqlite3 "$mcedb_tmp" "select revision from MCE") +- if [ -z "$mcedb_revision" ]; then +- echo ERROR "downloaded file seems invalid" +- return 1 +- fi +- sqlite3 "$mcedb_tmp" "alter table Intel add column origin text" +- sqlite3 "$mcedb_tmp" "update Intel set origin='mce'" +- +- echo OK "MCExtractor database revision $mcedb_revision" +- +- # parse Intel firmwares to get their versions +- _info_nol "Integrating Intel firmwares data to db... " +- if ! command -v unzip >/dev/null 2>&1; then +- echo ERROR "please install the \`unzip\` program" +- return 1 +- fi +- ( cd "$intel_tmp" && unzip fw.zip >/dev/null; ) +- if ! [ -d "$intel_tmp/Intel-Linux-Processor-Microcode-Data-Files-main/intel-ucode" ]; then +- echo ERROR "expected the 'intel-ucode' folder in the downloaded zip file" +- return 1 +- fi +- +- if ! command -v iucode_tool >/dev/null 2>&1; then +- if ! command -v iucode-tool >/dev/null 2>&1; then +- echo ERROR "please install the \`iucode-tool\` program" +- return 1 +- else +- iucode_tool="iucode-tool" +- fi +- else +- iucode_tool="iucode_tool" +- fi +- # 079/001: sig 0x000106c2, pf_mask 0x01, 2009-04-10, rev 0x0217, size 5120 +- # 078/004: sig 0x000106ca, pf_mask 0x10, 2009-08-25, rev 0x0107, size 5120 +- $iucode_tool -l "$intel_tmp/Intel-Linux-Processor-Microcode-Data-Files-main/intel-ucode" | grep -wF sig | while read -r _line +- do +- _line=$( echo "$_line" | tr -d ',') +- _cpuid=$( echo "$_line" | awk '{print $3}') +- _cpuid=$(( _cpuid )) +- _cpuid=$(printf "0x%08X" "$_cpuid") +- _date=$( echo "$_line" | awk '{print $6}' | tr -d '-') +- _version=$(echo "$_line" | awk '{print $8}') +- _version=$(( _version )) +- _version=$(printf "0x%08X" "$_version") +- _sqlstm="$(printf "INSERT INTO Intel (origin,cpuid,version,yyyymmdd) VALUES (\"%s\",\"%s\",\"%s\",\"%s\");" "intel" "$(printf "%08X" "$_cpuid")" "$(printf "%08X" "$_version")" "$_date")" +- sqlite3 "$mcedb_tmp" "$_sqlstm" +- done +- _intel_timestamp=$(stat -c %Y "$intel_tmp/Intel-Linux-Processor-Microcode-Data-Files-main/license" 2>/dev/null) +- if [ -n "$_intel_timestamp" ]; then +- # use this date, it matches the last commit date +- _intel_latest_date=$(date +%Y%m%d -d @"$_intel_timestamp") +- else +- echo "Falling back to the latest microcode date" +- _intel_latest_date=$(sqlite3 "$mcedb_tmp" "SELECT yyyymmdd from Intel WHERE origin = 'intel' ORDER BY yyyymmdd DESC LIMIT 1;") +- fi +- echo DONE "(version $_intel_latest_date)" +- +- dbversion="$mcedb_revision+i$_intel_latest_date" +- +- if [ "$1" != builtin ] && [ -n "$previous_dbversion" ] && [ "$previous_dbversion" = "v$dbversion" ]; then +- echo "We already have this version locally, no update needed" +- return 0 +- fi +- +- _info_nol "Building local database... " +- { +- echo "# Spectre & Meltdown Checker"; +- echo "# %%% MCEDB v$dbversion"; +- sqlite3 "$mcedb_tmp" "SELECT '# I,0x'||t1.cpuid||',0x'||MAX(t1.version)||','||t1.yyyymmdd FROM Intel AS t1 LEFT OUTER JOIN Intel AS t2 ON t2.cpuid=t1.cpuid AND t2.yyyymmdd > t1.yyyymmdd WHERE t2.yyyymmdd IS NULL GROUP BY t1.cpuid ORDER BY t1.cpuid ASC;" | grep -v '^# .,0x00000000,'; +- sqlite3 "$mcedb_tmp" "SELECT '# A,0x'||t1.cpuid||',0x'||MAX(t1.version)||','||t1.yyyymmdd FROM AMD AS t1 LEFT OUTER JOIN AMD AS t2 ON t2.cpuid=t1.cpuid AND t2.yyyymmdd > t1.yyyymmdd WHERE t2.yyyymmdd IS NULL GROUP BY t1.cpuid ORDER BY t1.cpuid ASC;" | grep -v '^# .,0x00000000,'; +- } > "$mcedb_cache" +- echo DONE "(version $dbversion)" +- +- if [ "$1" = builtin ]; then +- newfile=$(mktemp -t smc-builtin-XXXXXX) +- awk '/^# %%% MCEDB / { exit }; { print }' "$0" > "$newfile" +- awk '{ if (NR>1) { print } }' "$mcedb_cache" >> "$newfile" +- cat "$newfile" > "$0" +- rm -f "$newfile" +- fi +-} +- + parse_opt_file() + { + # parse_opt_file option_name option_value +@@ -1067,12 +922,15 @@ while [ -n "${1:-}" ]; do + # deprecated, kept for compatibility + opt_explain=0 + shift +- elif [ "$1" = "--update-fwdb" ] || [ "$1" = "--update-mcedb" ]; then +- update_fwdb +- exit $? +- elif [ "$1" = "--update-builtin-fwdb" ] || [ "$1" = "--update-builtin-mcedb" ]; then +- update_fwdb builtin +- exit $? ++ elif [ "$1" = "--with-fwdb" ] || [ "$1" = "--with-mcedb" ]; then ++ opt_fwdb=$2 ++ if [ -f "$opt_fwdb" ]; then ++ mcedb_cache=$2 ++ else ++ echo "$0: error: --with-fwdb should be a file, got '$opt_fwdb'" >&2 ++ exit 255 ++ fi ++ shift 2 + elif [ "$1" = "--dump-mock-data" ]; then + opt_mock=1 + shift +@@ -2033,21 +1891,11 @@ is_xen_domU() + fi + } + +-builtin_dbversion=$(awk '/^# %%% MCEDB / { print $4 }' "$0") + if [ -r "$mcedb_cache" ]; then + # we have a local cache file, but it might be older than the builtin version we have + local_dbversion=$( awk '/^# %%% MCEDB / { print $4 }' "$mcedb_cache") +- # sort -V sorts by version number +- older_dbversion=$(printf "%b\n%b" "$local_dbversion" "$builtin_dbversion" | sort -V | head -n1) +- if [ "$older_dbversion" = "$builtin_dbversion" ]; then +- mcedb_source="$mcedb_cache" +- mcedb_info="local firmwares DB $local_dbversion" +- fi +-fi +-# if mcedb_source is not set, either we don't have a local cached db, or it is older than the builtin db +-if [ -z "${mcedb_source:-}" ]; then +- mcedb_source="$0" +- mcedb_info="builtin firmwares DB $builtin_dbversion" ++ mcedb_source="$mcedb_cache" ++ mcedb_info="local firmwares DB $local_dbversion" + fi + read_mcedb() + { +@@ -2063,7 +1911,9 @@ is_latest_known_ucode() + return 2 + fi + ucode_latest="latest microcode version for your CPU model is unknown" +- if is_intel; then ++ if [ -z "$mcedb_source" ]; then ++ return 2 ++ elif is_intel; then + cpu_brand_prefix=I + elif is_amd; then + cpu_brand_prefix=A +-- +2.38.1 + |