diff --git a/fs/autofs4/dev-ioctl.c b/fs/autofs4/dev-ioctl.c
index 1442da4860e5ef6ad303fd5868fa70c68a5601a6..509fe1eb66ae31babcceda94ab8fd0a04268ebcb 100644
--- a/fs/autofs4/dev-ioctl.c
+++ b/fs/autofs4/dev-ioctl.c
@@ -372,6 +372,10 @@ static int autofs_dev_ioctl_setpipefd(struct file *fp,
 		return -EBUSY;
 	} else {
 		struct file *pipe = fget(pipefd);
+		if (!pipe) {
+			err = -EBADF;
+			goto out;
+		}
 		if (!pipe->f_op || !pipe->f_op->write) {
 			err = -EPIPE;
 			fput(pipe);