linux-kernel - [PATCH] fs/fat/dir.c fix resource leak

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Date:	Tue, 29 Jul 2008 10:03:33 +1000
From:	"Darren Jenkins\\" <darrenrjenkins@...il.com>
To:	kernel Janitors <kernel-janitors@...r.kernel.org>,
	LKML <linux-kernel@...r.kernel.org>, hirofumi@...l.parknet.co.jp
Subject: [PATCH] fs/fat/dir.c fix resource leak

G'day people,

Coverity CID 2332 & 2333 RESOURCE_LEAK


In fat_search_long() if fat_parse_long() returns a -ve value we return
without first freeing unicode and bufname.
This patch free's them on this error path.

Patch against linux-next commit 99be8ca04aa13c0ff10bbb3ba5f90676b050fcc6
Only compile tested

Signed-off-by: Darren Jenkins <darrenrjenkins@...ilcom>

diff --git a/fs/fat/dir.c b/fs/fat/dir.c
index 34541d0..8a9d7fa 100644
--- a/fs/fat/dir.c
+++ b/fs/fat/dir.c
@@ -346,14 +346,16 @@ parse_record:
 		if (de->attr == ATTR_EXT) {
 			int status = fat_parse_long(inode, &cpos, &bh, &de,
 						    &unicode, &nr_slots);
-			if (status < 0)
-				return status;
-			else if (status == PARSE_INVALID)
+			if (status < 0) {
+				err = status;
+				goto EODir;
+			} else if (status == PARSE_INVALID) {
 				continue;
-			else if (status == PARSE_NOT_LONGNAME)
+			} else if (status == PARSE_NOT_LONGNAME) {
 				goto parse_record;
-			else if (status == PARSE_EOF)
+			} else if (status == PARSE_EOF) {
 				goto EODir;
+			}
 		}
 
 		memcpy(work, de->name, sizeof(de->name));


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