[dpdk-dev] [PATCH] net/virtio: fix memory leak of interrupt handle

[Xia, Chenbo]

Missed R-by of Maxime will also be added when applying.

/Chenbo

> -----Original Message-----
> From: dev <dev-bounces at dpdk.org> On Behalf Of Xia, Chenbo
> Sent: Tuesday, July 27, 2021 9:53 AM
> To: Gaoxiang Liu <clgx0086 at 163.com>; dev at dpdk.org; liugaoxiang at huawei.com
> Cc: Maxime Coquelin <maxime.coquelin at redhat.com>
> Subject: Re: [dpdk-dev] [PATCH] net/virtio: fix memory leak of interrupt
> handle
> 
> Hi Gaoxiang,
> 
> > -----Original Message-----
> > From: Gaoxiang Liu <clgx0086 at 163.com>
> > Sent: Monday, July 26, 2021 10:42 PM
> > To: Xia, Chenbo <chenbo.xia at intel.com>; dev at dpdk.org; liugaoxiang at huawei.com
> > Cc: Gaoxiang Liu <clgx0086 at 163.com>
> > Subject: [PATCH] net/virtio: fix memory leak of interrupt handle
> >
> > Free memory of interrupt handle in virtio_user_dev_uninit() to
> > avoid memory leak.
> > when virtio user dev closes, memory of interrupt handle is not freed
> > that is allocated in virtio_user_fill_intr_handle().
> >
> > Fixes: 3d4fb6fd2505 <"net/virtio-user: support Rx interrupt">
> >
> 
> Please note two things here:
> 
> 1. Next time you send a v2 patch, please add the prefix like:
> 	[v2] net/virtio: fix memory leak of interrupt handle
> 
> 2. We prefer '()' rather than '<>' for fix line and you may miss one comment
> that we need cc stable tag for most fixes:
> 	Fixes: 3d4fb6fd2505 ("net/virtio-user: support Rx interrupt")
> 	Cc: stable at dpdk.org
> 
> And no need to send v3, I will help you fix it when applying. Welcome to DPDK!
> 
> For this patch:
> 
> Reviewed-by: Chenbo Xia <chenbo.xia at intel.com>
> 
> > Signed-off-by: Gaoxiang Liu <clgx0086 at 163.com>
> > ---
> >  drivers/net/virtio/virtio_user/virtio_user_dev.c | 7 +++++++
> >  1 file changed, 7 insertions(+)
> >
> > diff --git a/drivers/net/virtio/virtio_user/virtio_user_dev.c
> > b/drivers/net/virtio/virtio_user/virtio_user_dev.c
> > index 1cd1e95f4..16c58710d 100644
> > --- a/drivers/net/virtio/virtio_user/virtio_user_dev.c
> > +++ b/drivers/net/virtio/virtio_user/virtio_user_dev.c
> > @@ -654,6 +654,13 @@ virtio_user_dev_init(struct virtio_user_dev *dev, char
> > *path, int queues,
> >  void
> >  virtio_user_dev_uninit(struct virtio_user_dev *dev)
> >  {
> > +	struct rte_eth_dev *eth_dev = &rte_eth_devices[dev->hw.port_id];
> > +
> > +	if (eth_dev->intr_handle) {
> > +		free(eth_dev->intr_handle);
> > +		eth_dev->intr_handle = NULL;
> > +	}
> > +
> >  	virtio_user_stop_device(dev);
> >
> >  	rte_mem_event_callback_unregister(VIRTIO_USER_MEM_EVENT_CLB_NAME, dev);
> > --
> > 2.32.0