linux-kernel - [PATCH 2/2] scripts/decode_stacktrace: Only strip base path when a prefix of the path

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Message-Id: <20181122121440.74913-3-marc.zyngier@arm.com>
Date:   Thu, 22 Nov 2018 12:14:40 +0000
From:   Marc Zyngier <marc.zyngier@....com>
To:     Andrew Morton <akpm@...ux-foundation.org>
Cc:     linux-kernel@...r.kernel.org, Will Deacon <will.deacon@....com>
Subject: [PATCH 2/2] scripts/decode_stacktrace: Only strip base path when a prefix of the path

Running something like:

	decodecode vmlinux .

leads to interested results where not only the leading "." gets stripped
from the displayed paths, but also anywhere in the string, displaying
something like:

	kvm_vcpu_check_block (arch/arm64/kvm/virt/kvm/kvm_mainc:2141)

which doesn't help further processing.

Fix it by only stripping the base path if it is a prefix of the path.

Signed-off-by: Marc Zyngier <marc.zyngier@....com>
---
 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 64220e36ce3b..98a7d63a723e 100755
--- a/scripts/decode_stacktrace.sh
+++ b/scripts/decode_stacktrace.sh
@@ -78,7 +78,7 @@ 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'/' '}
-- 
2.19.1