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>

diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c
index 874d36e5f167eb879207fe78b56116f1402868b0..74d89133f76866786c3df6c19a48000fd51674e5 100644 (file)
--- 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;