Commit ecda6e27 authored Aug 06, 2020 by Konstantin Khlebnikov Committed by Linus Torvalds Aug 07, 2020

scripts/decode_stacktrace.sh: guess basepath if not specified



Guess path to kernel sources using known location of symbol "kernel_init".
Make basepath argument optional.

Before:

$ echo 'vfs_open+0x0/0x0' | ./scripts/decode_stacktrace.sh vmlinux ""
vfs_open (home/khlebnikov/src/linux/fs/open.c:912)

After:

$ echo 'vfs_open+0x0/0x0' | ./scripts/decode_stacktrace.sh vmlinux
vfs_open (fs/open.c:912)

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/159282922803.248444.2379229451667913634.stgit@buzz


Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

parent f643b9ee

scripts/decode_stacktrace.sh

+11 −3

Original line number	Diff line number	Diff line
		@@ -3,14 +3,14 @@
		# (c) 2014, Sasha Levin <sasha.levin@oracle.com>
		#set -x

		if [[ $# < 2 ]]; then
		if [[ $# < 1 ]]; then
		echo "Usage:"
		echo " $0 [vmlinux] [base path] [modules path]"
		echo " $0 <vmlinux> [base path] [modules path]"
		exit 1
		fi

		vmlinux=$1
		basepath=$2
		basepath=${2-auto}
		modpath=$3
		declare -A cache
		declare -A modcache
		@@ -152,6 +152,14 @@ handle_line() {
		echo "${words[@]}" "$symbol $module"
		}

		if [[ $basepath == "auto" ]] ; then
		module=""
		symbol="kernel_init+0x0/0x0"
		parse_symbol
		basepath=${symbol#kernel_init (}
		basepath=${basepath%/init/main.c:*)}
		fi

		while read line; do
		# Let's see if we have an address in the line
		if [[ $line =~ \[\<([^]]+)\>\] ]] \|\|

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