linux-kernel - [PATCH 19/24] udf: check if udf_load

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Message-Id: <1198374674-12128-20-git-send-email-marcin.slusarz@gmail.com>
Date:	Sun, 23 Dec 2007 02:51:09 +0100
From:	marcin.slusarz@...il.com
To:	LKML <linux-kernel@...r.kernel.org>
Cc:	Ben Fennema <bfennema@...con.csc.calpoly.edu>,
	Jan Kara <jack@...e.cz>,
	Marcin Slusarz <marcin.slusarz@...il.com>
Subject: [PATCH 19/24] udf: check if udf_load_logicalvol failed

udf_load_logicalvol may fail eg in out of memory conditions - check it
and propagate error further

Signed-off-by: Marcin Slusarz <marcin.slusarz@...il.com>
CC: Ben Fennema <bfennema@...con.csc.calpoly.edu>
CC: Jan Kara <jack@...e.cz>
---
 fs/udf/super.c |    7 ++++++-
 1 files changed, 6 insertions(+), 1 deletions(-)

diff --git a/fs/udf/super.c b/fs/udf/super.c
index 4aef612..f8c5794 100644
--- a/fs/udf/super.c
+++ b/fs/udf/super.c
@@ -1141,6 +1141,7 @@ static int udf_process_sequence(struct super_block *sb, long block,
 	uint32_t vdsn;
 	uint16_t ident;
 	long next_s = 0, next_e = 0;
+	int ret;
 
 	memset(vds, 0, sizeof(struct udf_vds_record) * VDS_POS_LENGTH);
 
@@ -1216,7 +1217,11 @@ static int udf_process_sequence(struct super_block *sb, long block,
 			if (i == VDS_POS_PRIMARY_VOL_DESC) {
 				udf_load_pvoldesc(sb, bh);
 			} else if (i == VDS_POS_LOGICAL_VOL_DESC) {
-				udf_load_logicalvol(sb, bh, fileset); /* TODO: check return value */
+				ret = udf_load_logicalvol(sb, bh, fileset);
+				if (ret != 0) {
+					brelse(bh);
+					return ret;
+				}
 			} else if (i == VDS_POS_PARTITION_DESC) {
 				struct buffer_head *bh2 = NULL;
 				if (udf_load_partdesc(sb, bh)) {
-- 
1.5.3.4

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