linux-kernel - [ 120/147] udf: fix retun value on error path in udf_load

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Message-Id: <20121014143549.976365232@decadent.org.uk>
Date:	Sun, 14 Oct 2012 15:37:33 +0100
From:	Ben Hutchings <ben@...adent.org.uk>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:	akpm@...ux-foundation.org, alan@...rguk.ukuu.org.uk,
	Nikola Pajkovsky <npajkovs@...hat.com>, Jan Kara <jack@...e.cz>
Subject: [ 120/147] udf: fix retun value on error path in udf_load_logicalvol

3.2-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Nikola Pajkovsky <npajkovs@...hat.com>

commit 68766a2edcd5cd744262a70a2f67a320ac944760 upstream.

In case we detect a problem and bail out, we fail to set "ret" to a
nonzero value, and udf_load_logicalvol will mistakenly report success.

Signed-off-by: Nikola Pajkovsky <npajkovs@...hat.com>
Signed-off-by: Jan Kara <jack@...e.cz>
Signed-off-by: Ben Hutchings <ben@...adent.org.uk>
---
 fs/udf/super.c |    5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/fs/udf/super.c b/fs/udf/super.c
index 9f55f79..18fc038 100644
--- a/fs/udf/super.c
+++ b/fs/udf/super.c
@@ -1344,6 +1344,7 @@ static int udf_load_logicalvol(struct super_block *sb, sector_t block,
 		udf_err(sb, "error loading logical volume descriptor: "
 			"Partition table too long (%u > %lu)\n", table_len,
 			sb->s_blocksize - sizeof(*lvd));
+		ret = 1;
 		goto out_bh;
 	}
 
@@ -1388,8 +1389,10 @@ static int udf_load_logicalvol(struct super_block *sb, sector_t block,
 						UDF_ID_SPARABLE,
 						strlen(UDF_ID_SPARABLE))) {
 				if (udf_load_sparable_map(sb, map,
-				    (struct sparablePartitionMap *)gpm) < 0)
+				    (struct sparablePartitionMap *)gpm) < 0) {
+					ret = 1;
 					goto out_bh;
+				}
 			} else if (!strncmp(upm2->partIdent.ident,
 						UDF_ID_METADATA,
 						strlen(UDF_ID_METADATA))) {


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