vfs: fix dentry leak in simple_fill_super()

put dentry if inode allocation failed, d_genocide() cannot release it

Signed-off-by: Konstantin Khlebnikov <khlebnikov@openvz.org>
Signed-off-by: Christoph Hellwig <hch@lst.de>

diff --git a/fs/libfs.c b/fs/libfs.c
index c18e9a1235b6594373d5c18f2e615b5bf4b06596..a2c0029cd95f47821b9420c6ff80b03cc0941794 100644 (file)
--- a/fs/libfs.c
+++ b/fs/libfs.c
@@ -510,8 +510,10 @@ int simple_fill_super(struct super_block *s, unsigned long magic,
                if (!dentry)
                        goto out;
                inode = new_inode(s);
-               if (!inode)
+               if (!inode) {
+                       dput(dentry);
                        goto out;
+               }
                inode->i_mode = S_IFREG | files->mode;
                inode->i_atime = inode->i_mtime = inode->i_ctime = CURRENT_TIME;
                inode->i_fop = files->ops;