On Tue, Apr 14, 2015 at 11:00:49AM -0700, Tadeusz Struk wrote:
> 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
Its only caller is
static int skcipher_recvmsg(struct socket *sock, struct msghdr *msg,
size_t ignored, int flags)
{
return (msg->msg_iocb && !is_sync_kiocb(msg->msg_iocb)) ?
skcipher_recvmsg_async(sock, msg, flags) :
skcipher_recvmsg_sync(sock, msg, flags);
}
Note that !is_sync_kiocb() in there. Compare with init_sync_kiocb() in
sock_recvmsg()...
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