linux-kernel - Re: [PATCH net 3/4] vhost: vsock: add weight support

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Message-ID: <20190516093352.GQ29507@stefanha-x1.localdomain>
Date:   Thu, 16 May 2019 10:33:52 +0100
From:   Stefan Hajnoczi <stefanha@...hat.com>
To:     Jason Wang <jasowang@...hat.com>
Cc:     mst@...hat.com, virtualization@...ts.linux-foundation.org,
        kvm@...r.kernel.org, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org, pbonzini@...hat.com
Subject: Re: [PATCH net 3/4] vhost: vsock: add weight support

On Thu, May 16, 2019 at 03:47:41AM -0400, Jason Wang wrote:
> @@ -183,7 +184,8 @@ static struct vhost_vsock *vhost_vsock_get(u32 guest_cid)
>  		virtio_transport_deliver_tap_pkt(pkt);
>  
>  		virtio_transport_free_pkt(pkt);
> -	}
> +		total_len += pkt->len;

Please increment total_len before virtio_transport_free_pkt(pkt) to
avoid use-after-free.

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