From mboxrd@z Thu Jan 1 00:00:00 1970 From: Asias He Subject: Re: [RFC 2/5] VSOCK: Introduce virtio-vsock-common.ko Date: Sun, 30 Jun 2013 07:45:50 +0800 Message-ID: <20130629234550.GC11388@hj.localdomain> References: <1372320004-20502-1-git-send-email-asias@redhat.com> <1372320004-20502-3-git-send-email-asias@redhat.com> <20130628.213225.150653146873611065.davem@davemloft.net> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Cc: acking@vmware.com, kvm@vger.kernel.org, dtor@vmware.com, netdev@vger.kernel.org, grantr@vmware.com, virtualization@lists.linux-foundation.org, penberg@kernel.org, mst@redhat.com, sasha.levin@oracle.com To: David Miller Return-path: Content-Disposition: inline In-Reply-To: <20130628.213225.150653146873611065.davem@davemloft.net> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: virtualization-bounces@lists.linux-foundation.org Errors-To: virtualization-bounces@lists.linux-foundation.org List-Id: netdev.vger.kernel.org Hi David, On Fri, Jun 28, 2013 at 09:32:25PM -0700, David Miller wrote: > From: Asias He > Date: Thu, 27 Jun 2013 16:00:01 +0800 > > > +static void > > +virtio_transport_recv_dgram(struct sock *sk, > > + struct virtio_vsock_pkt *pkt) > ... > > + memcpy(skb->data, pkt, sizeof(*pkt)); > > + memcpy(skb->data + sizeof(*pkt), pkt->buf, pkt->len); > > Are you sure this is right? > > Shouldn't you be using "sizeof(struct virtio_vsock_hdr)" instead of > "sizeof(*pkt)". 'pkt' is "struct virtio_vsock_pkt" and has all kinds > of meta-data you probably don't mean to include in the SKB. Right, virtio_vsock_hdr is enough. Will fix this. Thanks for looking at this. -- Asias