This is a note to let you know that I've just added the patch titled
scripts/decode_stacktrace.sh: support old bash version
to the 5.15-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
scripts-decode_stacktrace.sh-support-old-bash-versio.patch
and it can be found in the queue-5.15 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 073cdb347279ca86cf043c0fe12fd47856b09c9c
Author: Schspa Shi <schspa@xxxxxxxxx>
Date: Fri Apr 29 14:37:57 2022 -0700
scripts/decode_stacktrace.sh: support old bash version
[ Upstream commit 3af8acf6aff2a98731522b52927429760f0b8006 ]
Old bash version don't support associative array variables. Avoid to use
associative array variables to avoid error.
Without this, old bash version will report error as fellowing
[ 15.954042] Kernel panic - not syncing: sysrq triggered crash
[ 15.955252] CPU: 1 PID: 167 Comm: sh Not tainted 5.18.0-rc1-00208-gb7d075db2fd5 #4
[ 15.956472] Hardware name: Hobot J5 Virtual development board (DT)
[ 15.957856] Call trace:
./scripts/decode_stacktrace.sh: line 128: ,dump_backtrace: syntax error: operand expected (error token is ",dump_backtrace")
Link: https://lkml.kernel.org/r/20220409180331.24047-1-schspa@xxxxxxxxx
Signed-off-by: Schspa Shi <schspa@xxxxxxxxx>
Cc: Stephen Boyd <swboyd@xxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Stable-dep-of: efbd63983533 ("scripts/decode_stacktrace.sh: optionally use LLVM utilities")
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/scripts/decode_stacktrace.sh b/scripts/decode_stacktrace.sh
index 5fbad61fe490..7075e26ab2c4 100755
--- a/scripts/decode_stacktrace.sh
+++ b/scripts/decode_stacktrace.sh
@@ -45,8 +45,13 @@ else
fi
fi
-declare -A cache
-declare -A modcache
+declare aarray_support=true
+declare -A cache 2>/dev/null
+if [[ $? != 0 ]]; then
+ aarray_support=false
+else
+ declare -A modcache
+fi
find_module() {
if [[ -n $debuginfod ]] ; then
@@ -97,7 +102,7 @@ parse_symbol() {
if [[ $module == "" ]] ; then
local objfile=$vmlinux
- elif [[ "${modcache[$module]+isset}" == "isset" ]]; then
+ elif [[ $aarray_support == true && "${modcache[$module]+isset}" == "isset" ]]; then
local objfile=${modcache[$module]}
else
local objfile=$(find_module)
@@ -105,7 +110,9 @@ parse_symbol() {
echo "WARNING! Modules path isn't set, but is needed to parse this symbol" >&2
return
fi
- modcache[$module]=$objfile
+ if [[ $aarray_support == true ]]; then
+ modcache[$module]=$objfile
+ fi
fi
# Remove the englobing parenthesis
@@ -125,7 +132,7 @@ parse_symbol() {
# Use 'nm vmlinux' to figure out the base address of said symbol.
# It's actually faster to call it every time than to load it
# all into bash.
- if [[ "${cache[$module,$name]+isset}" == "isset" ]]; then
+ if [[ $aarray_support == true && "${cache[$module,$name]+isset}" == "isset" ]]; then
local base_addr=${cache[$module,$name]}
else
local base_addr=$(nm "$objfile" 2>/dev/null | awk '$3 == "'$name'" && ($2 == "t" || $2 == "T") {print $1; exit}')
@@ -133,7 +140,9 @@ parse_symbol() {
# address not found
return
fi
- cache[$module,$name]="$base_addr"
+ if [[ $aarray_support == true ]]; then
+ cache[$module,$name]="$base_addr"
+ fi
fi
# Let's start doing the math to get the exact address into the
# symbol. First, strip out the symbol total length.
@@ -149,11 +158,13 @@ parse_symbol() {
# Pass it to addr2line to get filename and line number
# Could get more than one result
- if [[ "${cache[$module,$address]+isset}" == "isset" ]]; then
+ if [[ $aarray_support == true && "${cache[$module,$address]+isset}" == "isset" ]]; then
local code=${cache[$module,$address]}
else
local code=$(${CROSS_COMPILE}addr2line -i -e "$objfile" "$address" 2>/dev/null)
- cache[$module,$address]=$code
+ if [[ $aarray_support == true ]]; then
+ cache[$module,$address]=$code
+ fi
fi
# addr2line doesn't return a proper error code if it fails, so
