examples/vhost: fix memory leak on forwarding packets.
Checks
Commit Message
In function virtio_tx_local(), when the device receiving the packet
is the same as the device to which the packet is forwarded,
or the device is removed, we return but not free the packet,
it will cause a memory leak.
Fixes: 4796ad63ba1f ("examples/vhost: import userspace vhost application")
Cc: stable@dpdk.org
Signed-off-by: Wenwu Ma <wenwux.ma@intel.com>
---
examples/vhost/main.c | 2 ++
1 file changed, 2 insertions(+)
Comments
Acked-by: Cheng Jiang <cheng1.jiang@intel.com>
> -----Original Message-----
> From: Ma, WenwuX <wenwux.ma@intel.com>
> Sent: Wednesday, August 18, 2021 1:13 AM
> To: dev@dpdk.org
> Cc: maxime.coquelin@redhat.com; Xia, Chenbo <chenbo.xia@intel.com>;
> Jiang, Cheng1 <cheng1.jiang@intel.com>; Hu, Jiayu <jiayu.hu@intel.com>;
> Ma, WenwuX <wenwux.ma@intel.com>; stable@dpdk.org
> Subject: [PATCH] examples/vhost: fix memory leak on forwarding packets.
>
> In function virtio_tx_local(), when the device receiving the packet is the
> same as the device to which the packet is forwarded, or the device is
> removed, we return but not free the packet, it will cause a memory leak.
>
> Fixes: 4796ad63ba1f ("examples/vhost: import userspace vhost application")
> Cc: stable@dpdk.org
>
> Signed-off-by: Wenwu Ma <wenwux.ma@intel.com>
> ---
> examples/vhost/main.c | 2 ++
> 1 file changed, 2 insertions(+)
>
> diff --git a/examples/vhost/main.c b/examples/vhost/main.c index
> bc3d71c898..07fd90ec64 100644
> --- a/examples/vhost/main.c
> +++ b/examples/vhost/main.c
> @@ -965,6 +965,7 @@ virtio_tx_local(struct vhost_dev *vdev, struct
> rte_mbuf *m)
> return -1;
>
> if (vdev->vid == dst_vdev->vid) {
> + rte_pktmbuf_free(m);
> RTE_LOG_DP(DEBUG, VHOST_DATA,
> "(%d) TX: src and dst MAC is same. Dropping
> packet.\n",
> vdev->vid);
> @@ -975,6 +976,7 @@ virtio_tx_local(struct vhost_dev *vdev, struct
> rte_mbuf *m)
> "(%d) TX: MAC address is local\n", dst_vdev->vid);
>
> if (unlikely(dst_vdev->remove)) {
> + rte_pktmbuf_free(m);
> RTE_LOG_DP(DEBUG, VHOST_DATA,
> "(%d) device is marked for removal\n", dst_vdev-
> >vid);
> return 0;
> --
> 2.25.1
Reviewed-by: Jiayu Hu <jiayu.hu@intel.com>
> -----Original Message-----
> From: Jiang, Cheng1 <cheng1.jiang@intel.com>
> Sent: Tuesday, August 17, 2021 1:26 PM
> To: Ma, WenwuX <wenwux.ma@intel.com>; dev@dpdk.org
> Cc: maxime.coquelin@redhat.com; Xia, Chenbo <chenbo.xia@intel.com>; Hu,
> Jiayu <jiayu.hu@intel.com>; stable@dpdk.org
> Subject: RE: [PATCH] examples/vhost: fix memory leak on forwarding packets.
>
> Acked-by: Cheng Jiang <cheng1.jiang@intel.com>
>
>
>
>
> > -----Original Message-----
> > From: Ma, WenwuX <wenwux.ma@intel.com>
> > Sent: Wednesday, August 18, 2021 1:13 AM
> > To: dev@dpdk.org
> > Cc: maxime.coquelin@redhat.com; Xia, Chenbo <chenbo.xia@intel.com>;
> > Jiang, Cheng1 <cheng1.jiang@intel.com>; Hu, Jiayu
> > <jiayu.hu@intel.com>; Ma, WenwuX <wenwux.ma@intel.com>;
> > stable@dpdk.org
> > Subject: [PATCH] examples/vhost: fix memory leak on forwarding packets.
> >
> > In function virtio_tx_local(), when the device receiving the packet is
> > the same as the device to which the packet is forwarded, or the device
> > is removed, we return but not free the packet, it will cause a memory leak.
> >
> > Fixes: 4796ad63ba1f ("examples/vhost: import userspace vhost
> > application")
> > Cc: stable@dpdk.org
> >
> > Signed-off-by: Wenwu Ma <wenwux.ma@intel.com>
> > ---
> > examples/vhost/main.c | 2 ++
> > 1 file changed, 2 insertions(+)
> >
> > diff --git a/examples/vhost/main.c b/examples/vhost/main.c index
> > bc3d71c898..07fd90ec64 100644
> > --- a/examples/vhost/main.c
> > +++ b/examples/vhost/main.c
> > @@ -965,6 +965,7 @@ virtio_tx_local(struct vhost_dev *vdev, struct
> > rte_mbuf *m)
> > return -1;
> >
> > if (vdev->vid == dst_vdev->vid) {
> > + rte_pktmbuf_free(m);
> > RTE_LOG_DP(DEBUG, VHOST_DATA,
> > "(%d) TX: src and dst MAC is same. Dropping
> packet.\n",
> > vdev->vid);
> > @@ -975,6 +976,7 @@ virtio_tx_local(struct vhost_dev *vdev, struct
> > rte_mbuf *m)
> > "(%d) TX: MAC address is local\n", dst_vdev->vid);
> >
> > if (unlikely(dst_vdev->remove)) {
> > + rte_pktmbuf_free(m);
> > RTE_LOG_DP(DEBUG, VHOST_DATA,
> > "(%d) device is marked for removal\n", dst_vdev-
> > >vid);
> > return 0;
> > --
> > 2.25.1
>
> -----Original Message-----
> From: Ma, WenwuX <wenwux.ma@intel.com>
> Sent: Wednesday, August 18, 2021 1:13 AM
> To: dev@dpdk.org
> Cc: maxime.coquelin@redhat.com; Xia, Chenbo <chenbo.xia@intel.com>; Jiang,
> Cheng1 <cheng1.jiang@intel.com>; Hu, Jiayu <jiayu.hu@intel.com>; Ma, WenwuX
> <wenwux.ma@intel.com>; stable@dpdk.org
> Subject: [PATCH] examples/vhost: fix memory leak on forwarding packets.
Should delete '.' in the title when applying.
With this fixed:
Reviewed-by: Chenbo Xia <chenbo.xia@intel.com>
>
> In function virtio_tx_local(), when the device receiving the packet
> is the same as the device to which the packet is forwarded,
> or the device is removed, we return but not free the packet,
> it will cause a memory leak.
>
> Fixes: 4796ad63ba1f ("examples/vhost: import userspace vhost application")
> Cc: stable@dpdk.org
>
> Signed-off-by: Wenwu Ma <wenwux.ma@intel.com>
> ---
> examples/vhost/main.c | 2 ++
> 1 file changed, 2 insertions(+)
@@ -965,6 +965,7 @@ virtio_tx_local(struct vhost_dev *vdev, struct rte_mbuf *m)
return -1;
if (vdev->vid == dst_vdev->vid) {
+ rte_pktmbuf_free(m);
RTE_LOG_DP(DEBUG, VHOST_DATA,
"(%d) TX: src and dst MAC is same. Dropping packet.\n",
vdev->vid);
@@ -975,6 +976,7 @@ virtio_tx_local(struct vhost_dev *vdev, struct rte_mbuf *m)
"(%d) TX: MAC address is local\n", dst_vdev->vid);
if (unlikely(dst_vdev->remove)) {
+ rte_pktmbuf_free(m);
RTE_LOG_DP(DEBUG, VHOST_DATA,
"(%d) device is marked for removal\n", dst_vdev->vid);
return 0;