From 8f587df479c3cea14ba1a9b9d58f34fd2fd6d58b Mon Sep 17 00:00:00 2001
From: Dan Carpenter <error27@gmail.com>
Date: Wed, 4 Aug 2010 16:27:45 +0000
Subject: 9p: potential ERR_PTR() dereference

p9_client_walk() can return error values if we run out of space or there
is a problem with the network.

Signed-off-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>

diff --git a/fs/9p/fid.c b/fs/9p/fid.c
index 3585636..6406f89 100644
--- a/fs/9p/fid.c
+++ b/fs/9p/fid.c
@@ -242,7 +242,8 @@ struct p9_fid *v9fs_fid_lookup(struct dentry *dentry)
 	}
 	kfree(wnames);
 fid_out:
-	v9fs_fid_add(dentry, fid);
+	if (!IS_ERR(fid))
+		v9fs_fid_add(dentry, fid);
 err_out:
 	up_read(&v9ses->rename_sem);
 	return fid;
-- 
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