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

e.g. Reported-by: syzbot+bbd8e9a06452cc480...@syzkaller.appspotmail.com

Do so.

Signed-off-by: Joe Perches <j...@perches.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;

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