Commit 89312214 authored Jan 18, 2011 by Ian Kent Committed by Al Viro Jan 18, 2011

vfs - fix dentry ref count in do_lookup()



There is a ref count problem in fs/namei.c:do_lookup().

When walking in ref-walk mode, if follow_managed() returns a fail we
need to drop dentry and possibly vfsmount.  Clean up properly,
as we do in the other caller of follow_managed().

Signed-off-by: Ian Kent <raven@themaw.net>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

parent c14cc63a

fs/namei.c

+3 −1

Original line number	Diff line number	Diff line
		@@ -1272,8 +1272,10 @@ done:
		path->mnt = mnt;
		path->dentry = dentry;
		err = follow_managed(path, nd->flags);
		if (unlikely(err < 0))
		if (unlikely(err < 0)) {
		path_put_conditional(path, nd);
		return err;
		}
		*inode = path->dentry->d_inode;
		return 0;