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Otherwise host nm may not recognize ARM Thumb-2 instruction address we= ll. Signed-off-by: Xiong Nandi Reviewed-by: Elliot Berman --- 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 fa5be6f57..2bc3a54ff 100755 --- a/scripts/decode_stacktrace.sh +++ b/scripts/decode_stacktrace.sh @@ -30,6 +30,7 @@ fi =20 READELF=3D${UTIL_PREFIX}readelf${UTIL_SUFFIX} ADDR2LINE=3D${UTIL_PREFIX}addr2line${UTIL_SUFFIX} +NM=3D${UTIL_PREFIX}nm${UTIL_SUFFIX} =20 if [[ $1 =3D=3D "-r" ]] ; then vmlinux=3D"" @@ -158,7 +159,7 @@ parse_symbol() { if [[ $aarray_support =3D=3D true && "${cache[$module,$name]+isset}" =3D= =3D "isset" ]]; then local base_addr=3D${cache[$module,$name]} else - local base_addr=3D$(nm "$objfile" 2>/dev/null | awk '$3 =3D=3D "'$name'"= && ($2 =3D=3D "t" || $2 =3D=3D "T") {print $1; exit}') + local base_addr=3D$(${NM} "$objfile" 2>/dev/null | awk '$3 =3D=3D "'$nam= e'" && ($2 =3D=3D "t" || $2 =3D=3D "T") {print $1; exit}') if [[ $base_addr =3D=3D "" ]] ; 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Thu, 23 May 2024 21:53:55 -0700 (PDT) Received: from localhost.localdomain ([223.104.43.17]) by smtp.gmail.com with ESMTPSA id 41be03b00d2f7-682274ba9edsm362179a12.90.2024.05.23.21.53.51 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 23 May 2024 21:53:54 -0700 (PDT) From: Xiong Nandi To: akpm@linux-foundation.org Cc: linux-kernel@vger.kernel.org, quic_bjorande@quicinc.com, cmllamas@google.com, quic_eberman@quicinc.com, Xiong Nandi Subject: [PATCH v3 2/2] scripts/decode_stacktrace.sh: better support to ARM32 module stack trace Date: Fri, 24 May 2024 12:26:00 +0800 Message-Id: <20240524042600.14738-3-xndchn@gmail.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240524042600.14738-1-xndchn@gmail.com> References: <20240524042600.14738-1-xndchn@gmail.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Sometimes there is special characters around module name in stack trace, such as ARM32 with BACKTRACE_VERBOSE in "(%pS)" format, such as: [<806e4845>] (dump_stack_lvl) from [<7f806013>] (hello_init+0x13/0x1000 [te= st]) In this case, $module will be "[test])", the trace can be decoded by stripp= ing the right parenthesis firstly: (dump_stack_lvl) from hello_init (/foo/test.c:10) test Signed-off-by: Xiong Nandi Suggested-by: Elliot Berman --- scripts/decode_stacktrace.sh | 3 +++ 1 file changed, 3 insertions(+) diff --git a/scripts/decode_stacktrace.sh b/scripts/decode_stacktrace.sh index 2bc3a54ff..a0f50a5b4 100755 --- a/scripts/decode_stacktrace.sh +++ b/scripts/decode_stacktrace.sh @@ -283,6 +283,9 @@ handle_line() { =20 if [[ ${words[$last]} =3D~ \[([^]]+)\] ]]; then module=3D${words[$last]} + # some traces format is "(%pS)", which like "(foo+0x0/0x1 [bar])" + # so $module may like "[bar])". Strip the right parenthesis firstly + module=3D${module%\)} module=3D${module#\[} module=3D${module%\]} modbuildid=3D${module#* } --=20 2.34.1