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authorKonstantin Khlebnikov <khlebnikov@yandex-team.ru>2020-08-06 23:17:35 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2020-08-07 11:33:21 -0700
commitf643b9ee97766e1846fab237c58a56277bf7e530 (patch)
treec1feff66865ab6517901cf0fd9bf18ed7e4ee4b8
parent1d35b6054a9b94b48511e23a7fab6cd1dbf3fde6 (diff)
scripts/decode_stacktrace.sh: skip missing symbols
For now script turns missing symbols into '0' and make bogus decode. Skip them instead. Also simplify parsing output of 'nm'. Before: $ echo 'xxx+0x0/0x0' | ./scripts/decode_stacktrace.sh vmlinux "" xxx (home/khlebnikov/src/linux/./arch/x86/include/asm/processor.h:398) After: $ echo 'xxx+0x0/0x0' | ./scripts/decode_stacktrace.sh vmlinux "" xxx+0x0/0x0 Signed-off-by: Konstantin Khlebnikov <khlebnikov@yandex-team.ru> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Cc: Sasha Levin <sashal@kernel.org> Link: http://lkml.kernel.org/r/159282922499.248444.4883465570858385250.stgit@buzz Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
-rwxr-xr-xscripts/decode_stacktrace.sh6
1 files changed, 5 insertions, 1 deletions
diff --git a/scripts/decode_stacktrace.sh b/scripts/decode_stacktrace.sh
index 0869def435ee..b157037af6df 100755
--- a/scripts/decode_stacktrace.sh
+++ b/scripts/decode_stacktrace.sh
@@ -56,7 +56,11 @@ parse_symbol() {
if [[ "${cache[$module,$name]+isset}" == "isset" ]]; then
local base_addr=${cache[$module,$name]}
else
- local base_addr=$(nm "$objfile" | grep -i ' t ' | awk "/ $name\$/ {print \$1}" | head -n1)
+ local base_addr=$(nm "$objfile" | awk '$3 == "'$name'" && ($2 == "t" || $2 == "T") {print $1; exit}')
+ if [[ $base_addr == "" ]] ; then
+ # address not found
+ return
+ fi
cache[$module,$name]="$base_addr"
fi
# Let's start doing the math to get the exact address into the