linux-kernel - [PATCH v2 1/2] scripts/decode_stacktrace.sh: wrap nm with UTIL_PREFIX and UTIL

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Message-Id: <20240523010318.12934-2-xndchn@gmail.com>
Date: Thu, 23 May 2024 09:03:17 +0800
From: Xiong Nandi <xndchn@...il.com>
To: akpm@...ux-foundation.org
Cc: linux-kernel@...r.kernel.org,
	quic_bjorande@...cinc.com,
	cmllamas@...gle.com,
	quic_eberman@...cinc.com,
	Xiong Nandi <xndchn@...il.com>
Subject: [PATCH v2 1/2] scripts/decode_stacktrace.sh: wrap nm with UTIL_PREFIX and UTIL_SUFFIX

Since System.map is generated by cross-compile nm tool, we should use it here
too. Otherwise host nm may not recognize ARM Thumb-2 instruction address well.

Signed-off-by: Xiong Nandi <xndchn@...il.com>
---
 scripts/decode_stacktrace.sh | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/scripts/decode_stacktrace.sh b/scripts/decode_stacktrace.sh
index fa5be6f57b00..2bc3a54ffba5 100755
--- a/scripts/decode_stacktrace.sh
+++ b/scripts/decode_stacktrace.sh
@@ -30,6 +30,7 @@ fi
 
 READELF=${UTIL_PREFIX}readelf${UTIL_SUFFIX}
 ADDR2LINE=${UTIL_PREFIX}addr2line${UTIL_SUFFIX}
+NM=${UTIL_PREFIX}nm${UTIL_SUFFIX}
 
 if [[ $1 == "-r" ]] ; then
 	vmlinux=""
@@ -158,7 +159,7 @@ parse_symbol() {
 	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 $1; exit}')
+		local base_addr=$(${NM} "$objfile" 2>/dev/null | awk '$3 == "'$name'" && ($2 == "t" || $2 == "T") {print $1; exit}')
 		if [[ $base_addr == "" ]] ; then
 			# address not found
 			return
-- 
2.25.1