linux-6.8/scripts/decode_stacktrace.sh

2 # SPDX-License-Identifier: GPL-2.0
4 #set -x
8 	echo "	$0 -r <release> | <vmlinux> [<base path>|auto] [<modules path>]"
12 if type llvm-cxxfilt >/dev/null 2>&1 ; then
13 	cppfilt=llvm-cxxfilt
16 	cppfilt_opts=-i
20 if [[ -z ${LLVM:-} ]]; then
21 	UTIL_PREFIX=${CROSS_COMPILE:-}
23 	UTIL_PREFIX=llvm-
26 	elif [[ ${LLVM} == -* ]]; then
34 if [[ $1 == "-r" ]] ; then
40 …for fn in {,/usr/lib/debug}/boot/vmlinux-$release{,.debug} /lib/modules/$release{,/build}/vmlinux …
41 		if [ -e "$fn" ] ; then
54 	basepath=${2-auto}
59 	# Can we use debuginfod-find?
60 	if type debuginfod-find >/dev/null 2>&1 ; then
61 		debuginfod=${1-only}
64 	if [[ $vmlinux == "" && -z $debuginfod ]] ; then
72 declare -A cache 2>/dev/null
76 	declare -A modcache
80 	if [[ -n $debuginfod ]] ; then
81 		if [[ -n $modbuildid ]] ; then
82 			debuginfod-find debuginfo $modbuildid && return
92 		for fn in $(find "$modpath" -name "${module//_/[-_]}.ko*") ; do
93 			if ${READELF} -WS "$fn" | grep -qwF .debug_line ; then
105 …release=$(gdb -ex 'print init_uts_ns.name.release' -ex 'quit' -quiet -batch "$vmlinux" 2>/dev/null…
109 		if [ -e "$dn" ] ; then
121 	#   ([name]+[offset]/[total length])
152 	# Strip the symbol name so that we could look it up
153 	local name=${symbol%+*}
158 	if [[ $aarray_support == true && "${cache[$module,$name]+isset}" == "isset" ]]; then
159 		local base_addr=${cache[$module,$name]}
161 …local base_addr=$(nm "$objfile" 2>/dev/null | awk '$3 == "'$name'" && ($2 == "t" || $2 == "T") {pr…
167 			cache[$module,$name]="$base_addr"
174 	# Now, replace the symbol name with the base address we found
176 	expr=${expr/$name/0x$base_addr}
182 	# Pass it to addr2line to get filename and line number
187 		local code=$(${ADDR2LINE} -i -e "$objfile" "$address" 2>/dev/null)
200 	# Strip out the base of the path on each line
201 	code=$(while read -r line; do echo "${line#$basepath/}"; done <<< "$code")
203 	# In the case of inlines, move everything to same line
206 	# Demangle if the name looks like a Rust symbol and if
208 	if [[ $name =~ ^_R && $cppfilt != "" ]] ; then
209 		name=$("$cppfilt" "$cppfilt_opts" "$name")
212 	# Replace old address with pretty line numbers
213 	symbol="$segment$name ($code)"
223 	if [[ $vmlinux_buildid =~ ^[0-9a-f]+ ]]; then
224 		vmlinux=$(debuginfod-find debuginfo $vmlinux_buildid)
225 		if [[ $? -ne 0 ]] ; then
226 			echo "ERROR! vmlinux image not found via debuginfod-find" >&2
232 	echo "ERROR! Build ID for vmlinux not found. Try passing -r or specifying vmlinux" >&2
255 	read -a words <<<"$1"
262 	local last=$(( ${#words[@]} - 1 ))
277 	if [[ ${words[$last]} =~ ^[0-9a-f]+\] ]]; then
278 		words[$last-1]="${words[$last-1]} ${words[$last]}"
280 		last=$(( $last - 1 ))
292 		symbol=${words[$last-1]}
293 		unset words[$last-1]
304 	# Add up the line number to the symbol
308 while read line; do
309 	# Strip unexpected carriage return at end of line
310 	line=${line%$'\r'}
312 	# Let's see if we have an address in the line
313 	if [[ $line =~ \[\<([^]]+)\>\] ]] ||
314 	   [[ $line =~ [^+\ ]+\+0x[0-9a-f]+/0x[0-9a-f]+ ]]; then
315 		# Translate address to line numbers
316 		handle_line "$line"
317 	# Is it a code line?
318 	elif [[ $line == *Code:* ]]; then
319 		decode_code "$line"
320 	# Is it a version line?
321 	elif [[ -n $debuginfod && $line =~ PID:\ [0-9]+\ Comm: ]]; then
322 		debuginfod_get_vmlinux "$line"
324 		# Nothing special in this line, show it as is
325 		echo "$line"