[PATCH] avoid NULL deference in ext2_xattr_get

[Wang Sheng-Hui]

Signed-off-by: Wang Sheng-Hui <crosslonelyover@xxxxxxxxx>
---
 fs/ext2/xattr.c |    5 +++--
 1 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/fs/ext2/xattr.c b/fs/ext2/xattr.c
index 7c39157..81ec1c6 100644
--- a/fs/ext2/xattr.c
+++ b/fs/ext2/xattr.c
@@ -156,11 +156,12 @@ ext2_xattr_get(struct inode *inode, int name_index, const char *name,
 	char *end;
 	int error;
 
+	if (name == NULL)
+		return -EINVAL;
+
 	ea_idebug(inode, "name=%d.%s, buffer=%p, buffer_size=%ld",
 		  name_index, name, buffer, (long)buffer_size);
 
-	if (name == NULL)
-		return -EINVAL;
 	down_read(&EXT2_I(inode)->xattr_sem);
 	error = -ENODATA;
 	if (!EXT2_I(inode)->i_file_acl)
-- 
1.7.1.1


--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/