[PATCH] jffs2: fix a memleak in read_direntry()

[fangwei1 at huawei.com]

From: Wei Fang <fangwei1 at huawei.com>

Need to free the memory allocated for 'fd' if failed to read all
of the remainder name.

Signed-off-by: Wei Fang <fangwei1 at huawei.com>
---
 fs/jffs2/readinode.c |    6 +++++-
 1 files changed, 5 insertions(+), 1 deletions(-)

diff --git a/fs/jffs2/readinode.c b/fs/jffs2/readinode.c
index 28e0aab..bfebbf1 100644
--- a/fs/jffs2/readinode.c
+++ b/fs/jffs2/readinode.c
@@ -660,8 +660,12 @@ static inline int read_direntry(struct jffs2_sb_info *c, struct jffs2_raw_node_r
 
 		err = jffs2_flash_read(c, (ref_offset(ref)) + read,
 				rd->nsize - already, &read, &fd->name[already]);
-		if (unlikely(read != rd->nsize - already) && likely(!err))
+		if (unlikely(read != rd->nsize - already) && likely(!err)) {
+			jffs2_free_full_dirent(fd);
+			JFFS2_ERROR("short read: wanted %d bytes, got %zd\n",
+				    rd->nsize - already, read);
 			return -EIO;
+		}
 
 		if (unlikely(err)) {
 			JFFS2_ERROR("read remainder of name: error %d\n", err);
-- 
1.7.1