[PATCH AUTOSEL 4.9 6/8] scripts/decode_stacktrace: match basepath using shell prefix operator, not regex

From: Sasha Levin
Date: Thu Aug 29 2019 - 06:51:34 EST


From: Nicolas Boichat <drinkcat@xxxxxxxxxxxx>

[ 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@xxxxxxxxxxxx
Fixes: 67a28de47faa8358 ("scripts/decode_stacktrace: only strip base path when a prefix of the path")
Signed-off-by: Nicolas Boichat <drinkcat@xxxxxxxxxxxx>
Reviewed-by: Stephen Boyd <swboyd@xxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Signed-off-by: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
scripts/decode_stacktrace.sh | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

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'/' '}
--
2.20.1