diff options
Diffstat (limited to 'scripts')
| -rwxr-xr-x | scripts/decode_stacktrace.sh | 55 |
1 files changed, 39 insertions, 16 deletions
diff --git a/scripts/decode_stacktrace.sh b/scripts/decode_stacktrace.sh index 00d6d53c2681..c332684e1b5a 100755 --- a/scripts/decode_stacktrace.sh +++ b/scripts/decode_stacktrace.sh @@ -2,15 +2,17 @@ # (c) 2014, Sasha Levin <sasha.levin@oracle.com> #set -x -if [[ $# != 2 ]]; then +if [[ $# < 2 ]]; then echo "Usage:" - echo " $0 [vmlinux] [base path]" + echo " $0 [vmlinux] [base path] [modules path]" exit 1 fi vmlinux=$1 basepath=$2 +modpath=$3 declare -A cache +declare -A modcache parse_symbol() { # The structure of symbol at this point is: @@ -19,6 +21,17 @@ parse_symbol() { # For example: # do_basic_setup+0x9c/0xbf + if [[ $module == "" ]] ; then + local objfile=$vmlinux + elif [[ "${modcache[$module]+isset}" == "isset" ]]; then + local objfile=${modcache[$module]} + else + [[ $modpath == "" ]] && return + local objfile=$(find "$modpath" -name $module.ko -print -quit) + [[ $objfile == "" ]] && return + modcache[$module]=$objfile + fi + # Remove the englobing parenthesis symbol=${symbol#\(} symbol=${symbol%\)} @@ -29,11 +42,11 @@ parse_symbol() { # Use 'nm vmlinux' to figure out the base address of said symbol. # It's actually faster to call it every time than to load it # all into bash. - if [[ "${cache[$name]+isset}" == "isset" ]]; then - local base_addr=${cache[$name]} + if [[ "${cache[$module,$name]+isset}" == "isset" ]]; then + local base_addr=${cache[$module,$name]} else - local base_addr=$(nm "$vmlinux" | grep -i ' t ' | awk "/ $name\$/ {print \$1}" | head -n1) - cache["$name"]="$base_addr" + local base_addr=$(nm "$objfile" | grep -i ' t ' | awk "/ $name\$/ {print \$1}" | head -n1) + cache[$module,$name]="$base_addr" fi # Let's start doing the math to get the exact address into the # symbol. First, strip out the symbol total length. @@ -48,12 +61,12 @@ parse_symbol() { local address=$(printf "%x\n" "$expr") # Pass it to addr2line to get filename and line number - # Could get more than one result - if [[ "${cache[$address]+isset}" == "isset" ]]; then - local code=${cache[$address]} + # Could get more than one result + if [[ "${cache[$module,$address]+isset}" == "isset" ]]; then + local code=${cache[$module,$address]} else - local code=$(addr2line -i -e "$vmlinux" "$address") - cache[$address]=$code + local code=$(addr2line -i -e "$objfile" "$address") + cache[$module,$address]=$code fi # addr2line doesn't return a proper error code if it fails, so @@ -105,13 +118,23 @@ handle_line() { fi done - # The symbol is the last element, process it - symbol=${words[$last]} + if [[ ${words[$last]} =~ \[([^]]+)\] ]]; then + module=${words[$last]} + module=${module#\[} + module=${module%\]} + symbol=${words[$last-1]} + unset words[$last-1] + else + # The symbol is the last element, process it + symbol=${words[$last]} + module= + fi + unset words[$last] parse_symbol # modifies $symbol # Add up the line number to the symbol - echo "${words[@]}" "$symbol" + echo "${words[@]}" "$symbol $module" } while read line; do @@ -121,8 +144,8 @@ while read line; do handle_line "$line" # Is it a code line? elif [[ $line == *Code:* ]]; then - decode_code "$line" - else + decode_code "$line" + else # Nothing special in this line, show it as is echo "$line" fi |