scripts/get_maintainer.pl: fix possible infinite loop

commit 3c840c18bcd8efb37f1a565e83a9509e1ea5d105 upstream.

If MAINTAINERS section entries are misformatted, it was possible to have
an infinite loop.

Correct the defect by always moving the index to the end of section + 1

Also, exit check for exclude as soon as possible.

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/scripts/get_maintainer.pl b/scripts/get_maintainer.pl
index 2f3230db7ffbfd3044ceba5888e14bd77dc23148..049c4192058152e3e56a25d76d353a88f327cde3 100755 (executable)
--- a/scripts/get_maintainer.pl
+++ b/scripts/get_maintainer.pl
@@ -314,6 +314,7 @@ foreach my $file (@files) {
                if ($type eq 'X') {
                    if (file_match_pattern($file, $value)) {
                        $exclude = 1;
+                       last;
                    }
                }
            }
@@ -340,8 +341,7 @@ foreach my $file (@files) {
            }
        }
 
-       $tvi += ($end - $start);
-
+       $tvi = $end + 1;
     }
 
     foreach my $line (sort {$hash{$b} <=> $hash{$a}} keys %hash) {