| Message ID | 47a7dbf6-1c63-3338-5102-122766e6378d@sberdevices.ru (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | [RFC,v1] virtio/vsock: check transport before skb allocation | expand |
On Fri, Mar 17, 2023 at 01:37:10PM +0300, Arseniy Krasnov wrote: > Pointer to transport could be checked before allocation of skbuff, thus > there is no need to free skbuff when this pointer is NULL. > > Signed-off-by: Arseniy Krasnov <AVKrasnov@sberdevices.ru> > --- > net/vmw_vsock/virtio_transport_common.c | 8 +++----- > 1 file changed, 3 insertions(+), 5 deletions(-) > > diff --git a/net/vmw_vsock/virtio_transport_common.c b/net/vmw_vsock/virtio_transport_common.c > index cda587196475..607149259e8b 100644 > --- a/net/vmw_vsock/virtio_transport_common.c > +++ b/net/vmw_vsock/virtio_transport_common.c > @@ -867,6 +867,9 @@ static int virtio_transport_reset_no_sock(const struct virtio_transport *t, > if (le16_to_cpu(hdr->op) == VIRTIO_VSOCK_OP_RST) > return 0; > > + if (!t) > + return -ENOTCONN; > + > reply = virtio_transport_alloc_skb(&info, 0, > le64_to_cpu(hdr->dst_cid), > le32_to_cpu(hdr->dst_port), > @@ -875,11 +878,6 @@ static int virtio_transport_reset_no_sock(const struct virtio_transport *t, > if (!reply) > return -ENOMEM; > > - if (!t) { > - kfree_skb(reply); > - return -ENOTCONN; > - } > - > return t->send_pkt(reply); > } > > -- > 2.25.1 LGTM. Reviewed-by: Bobby Eshleman <bobby.eshleman@bytedance.com>
On Fri, Mar 17, 2023 at 01:37:10PM +0300, Arseniy Krasnov wrote: >Pointer to transport could be checked before allocation of skbuff, thus >there is no need to free skbuff when this pointer is NULL. > >Signed-off-by: Arseniy Krasnov <AVKrasnov@sberdevices.ru> >--- > net/vmw_vsock/virtio_transport_common.c | 8 +++----- > 1 file changed, 3 insertions(+), 5 deletions(-) LGTM, I think net-next is fine for this. Reviewed-by: Stefano Garzarella <sgarzare@redhat.com> Thanks, Stefano > >diff --git a/net/vmw_vsock/virtio_transport_common.c b/net/vmw_vsock/virtio_transport_common.c >index cda587196475..607149259e8b 100644 >--- a/net/vmw_vsock/virtio_transport_common.c >+++ b/net/vmw_vsock/virtio_transport_common.c >@@ -867,6 +867,9 @@ static int virtio_transport_reset_no_sock(const struct virtio_transport *t, > if (le16_to_cpu(hdr->op) == VIRTIO_VSOCK_OP_RST) > return 0; > >+ if (!t) >+ return -ENOTCONN; >+ > reply = virtio_transport_alloc_skb(&info, 0, > le64_to_cpu(hdr->dst_cid), > le32_to_cpu(hdr->dst_port), >@@ -875,11 +878,6 @@ static int virtio_transport_reset_no_sock(const struct virtio_transport *t, > if (!reply) > return -ENOMEM; > >- if (!t) { >- kfree_skb(reply); >- return -ENOTCONN; >- } >- > return t->send_pkt(reply); > } > >-- >2.25.1 >
diff --git a/net/vmw_vsock/virtio_transport_common.c b/net/vmw_vsock/virtio_transport_common.c index cda587196475..607149259e8b 100644 --- a/net/vmw_vsock/virtio_transport_common.c +++ b/net/vmw_vsock/virtio_transport_common.c @@ -867,6 +867,9 @@ static int virtio_transport_reset_no_sock(const struct virtio_transport *t, if (le16_to_cpu(hdr->op) == VIRTIO_VSOCK_OP_RST) return 0; + if (!t) + return -ENOTCONN; + reply = virtio_transport_alloc_skb(&info, 0, le64_to_cpu(hdr->dst_cid), le32_to_cpu(hdr->dst_port), @@ -875,11 +878,6 @@ static int virtio_transport_reset_no_sock(const struct virtio_transport *t, if (!reply) return -ENOMEM; - if (!t) { - kfree_skb(reply); - return -ENOTCONN; - } - return t->send_pkt(reply); }
Pointer to transport could be checked before allocation of skbuff, thus there is no need to free skbuff when this pointer is NULL. Signed-off-by: Arseniy Krasnov <AVKrasnov@sberdevices.ru> --- net/vmw_vsock/virtio_transport_common.c | 8 +++----- 1 file changed, 3 insertions(+), 5 deletions(-)