linux-kernel - checkpatch: Improve parse

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Message-ID: <1518631805.3678.12.camel@perches.com>
Date:   Wed, 14 Feb 2018 10:10:05 -0800
From:   Joe Perches <joe@...ches.com>
To:     Andrew Morton <akpm@...ux-foundation.org>
Cc:     Andy Whitcroft <apw@...onical.com>,
        LKML <linux-kernel@...r.kernel.org>,
        Dmitry Vyukov <dvyukov@...gle.com>
Subject: checkpatch: Improve parse_email signature checking

Bare email addresses with non alphanumeric characters require
escape quoting before being substituted in the parse_email routine.

e.g. Reported-by: syzbot+bbd8e9a06452cc48059b@...kaller.appspotmail.com

Do so.

Signed-off-by: Joe Perches <joe@...ches.com>
---
 scripts/checkpatch.pl | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index 3d4040322ae1..2b8397da39d3 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -1075,7 +1075,7 @@ sub parse_email {
 	} elsif ($formatted_email =~ /(\S+\@\S+)(.*)$/) {
 		$address = $1;
 		$comment = $2 if defined $2;
-		$formatted_email =~ s/$address.*$//;
+		$formatted_email =~ s/\Q$address\E.*$//;
 		$name = $formatted_email;
 		$name = trim($name);
 		$name =~ s/^\"|\"$//g;