From: Nicolas Boichat <drinkcat@chromium.org>
Date: Fri, 12 Jul 2019 03:52:27 +0000 (-0700)
Subject: scripts/decode_stacktrace: match basepath using shell prefix operator, not regex
X-Git-Tag: v4.9.193~3
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=90741c3291f2f6c54068e1726370ed0b47ec4885;p=thirdparty%2Fkernel%2Fstable.git

scripts/decode_stacktrace: match basepath using shell prefix operator, not regex

[ Upstream commit 31013836a71e07751a6827f9d2ad41ef502ddaff ]

The basepath may contain special characters, which would confuse the regex
matcher.  ${var#prefix} does the right thing.

Link: http://lkml.kernel.org/r/20190518055946.181563-1-drinkcat@chromium.org
Fixes: 67a28de47faa8358 ("scripts/decode_stacktrace: only strip base path when a prefix of the path")
Signed-off-by: Nicolas Boichat <drinkcat@chromium.org>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---

diff --git a/scripts/decode_stacktrace.sh b/scripts/decode_stacktrace.sh
index 381acfc4c59dd..98cf6343afcd7 100755
--- a/scripts/decode_stacktrace.sh
+++ b/scripts/decode_stacktrace.sh
@@ -77,7 +77,7 @@ parse_symbol() {
 	fi
 
 	# Strip out the base of the path
-	code=${code//^$basepath/""}
+	code=${code#$basepath/}
 
 	# In the case of inlines, move everything to same line
 	code=${code//$'\n'/' '}