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>

1 files changed, 3 insertions, 0 deletions

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;