Subject: Re: [PATCH 03/17] fs: don't allow to complete sync iocbs through aio_complete

From: Tadeusz Struk <[email-masked]>
Date: Tue, 14 Apr 2015 11:00:49 -0700

On 04/11/2015 02:18 PM, Al Viro wrote:
> @@ -766,8 +765,7 @@ int sock_recvmsg(struct socket *sock, struct msghdr *msg,
>  
>  	init_sync_kiocb(&iocb, NULL);
>  	ret = __sock_recvmsg(&iocb, sock, msg, size, flags);
> -	if (-EIOCBQUEUED == ret)
> -		ret = wait_on_sync_kiocb(&iocb);
> +	BUG_ON(ret == -EIOCBQUEUED);

NACK - PF_ALG type sockets support async operations and return -EIOCBQUEUED
See skcipher_recvmsg_async() in crypto/algif_skcipher.c in net-next