[dpdk-stable] [PATCH] net/bonding: fix memory leak on closing device

[Yu, DapengX]

> -----Original Message-----
> From: Min Hu (Connor) <humin29 at huawei.com>
> Sent: Wednesday, September 15, 2021 2:59 PM
> To: Yu, DapengX <dapengx.yu at intel.com>; Chas Williams <chas3 at att.com>
> Cc: dev at dpdk.org; stable at dpdk.org
> Subject: Re: [PATCH] net/bonding: fix memory leak on closing device
> 
> Hi, dapengx,
> 	Why not free internals->kvlist at the end of
> "bond_ethdev_configure" ?
> Does it call some bugs?

Just try not to deviate too much from the previous fix: 144dc4739975 ("net/bonding: fix leak on remove")
Since it is reasonable.
And releasing port resource in bond_ethdev_close() is in order to
avoid that memory leak detect tool to find memory leak after device is closed.

free internals->kvlist at the end of "bond_ethdev_configure" is also ok.

> 
> 在 2021/9/15 13:08, dapengx.yu at intel.com 写道:
> > From: Dapeng Yu <dapengx.yu at intel.com>
> >
> > If the bond device was created by vdev mode, the kvlist was not free
> > after the bond device was closed.
> >
> > This patch fixes it.
> >
> > Fixes: 144dc4739975 ("net/bonding: fix leak on remove")
> > Cc: stable at dpdk.org
> >
> > Signed-off-by: Dapeng Yu <dapengx.yu at intel.com>
> > ---
> >   drivers/net/bonding/rte_eth_bond_pmd.c | 5 +++--
> >   1 file changed, 3 insertions(+), 2 deletions(-)
> >
> > diff --git a/drivers/net/bonding/rte_eth_bond_pmd.c
> > b/drivers/net/bonding/rte_eth_bond_pmd.c
> > index a6755661c4..2e96b850fb 100644
> > --- a/drivers/net/bonding/rte_eth_bond_pmd.c
> > +++ b/drivers/net/bonding/rte_eth_bond_pmd.c
> > @@ -2163,6 +2163,9 @@ bond_ethdev_close(struct rte_eth_dev *dev)
> >   	 */
> >   	rte_mempool_free(internals->mode6.mempool);
> >
> > +	if (internals->kvlist != NULL)
> > +		rte_kvargs_free(internals->kvlist);
> > +
> >   	return 0;
> >   }
> >
> > @@ -3475,8 +3478,6 @@ bond_remove(struct rte_vdev_device *dev)
> >   		ret = bond_ethdev_stop(eth_dev);
> >   		bond_ethdev_close(eth_dev);
> >   	}
> > -	if (internals->kvlist != NULL)
> > -		rte_kvargs_free(internals->kvlist);
> >   	rte_eth_dev_release_port(eth_dev);
> >
> >   	return ret;
> >