From c2b96929e2ca6914cf4a66cd8fe2a34c4a98277f Mon Sep 17 00:00:00 2001
From: Dan Carpenter <error27@gmail.com>
Date: Sat, 20 Mar 2010 11:24:15 +0000
Subject: [PATCH] Btrfs: handle kmalloc() failure in inode lookup ioctl

Return -ENOMEM if kmalloc() fails.

Signed-off-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
---
 fs/btrfs/ioctl.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c
index 874d36e5f167..74d89133f768 100644
--- a/fs/btrfs/ioctl.c
+++ b/fs/btrfs/ioctl.c
@@ -1211,6 +1211,9 @@ static noinline int btrfs_ioctl_ino_lookup(struct file *file,
 		return -EPERM;
 
 	args = kmalloc(sizeof(*args), GFP_KERNEL);
+	if (!args)
+		return -ENOMEM;
+
 	if (copy_from_user(args, argp, sizeof(*args))) {
 		kfree(args);
 		return -EFAULT;