Merge remote-tracking branches 'regmap/topic/rbtree' and 'regmap/topic/update-offload...

[karo-tx-linux.git] / fs / cifs / ioctl.c

diff --git a/fs/cifs/ioctl.c b/fs/cifs/ioctl.c
index c63f5227b68181ed772d1a999686a852a23d41e9..28a77bf1d55924693d27d1c701571e1b1fef2d49 100644 (file)
--- a/fs/cifs/ioctl.c
+++ b/fs/cifs/ioctl.c
@@ -67,6 +67,12 @@ static long cifs_ioctl_clone(unsigned int xid, struct file *dst_file,
                goto out_drop_write;
        }
 
+       if (src_file.file->f_op->unlocked_ioctl != cifs_ioctl) {
+               rc = -EBADF;
+               cifs_dbg(VFS, "src file seems to be from a different filesystem type\n");
+               goto out_fput;
+       }
+
        if ((!src_file.file->private_data) || (!dst_file->private_data)) {
                rc = -EBADF;
                cifs_dbg(VFS, "missing cifsFileInfo on copy range src file\n");