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From: "Zhang, Qi Z" <qi.z.zhang@intel.com>
To: "Ananyev, Konstantin" <konstantin.ananyev@intel.com>,
	"Lu, Wenzhuo" <wenzhuo.lu@intel.com>,
	"dev@dpdk.org" <dev@dpdk.org>
Cc: "Lu, Wenzhuo" <wenzhuo.lu@intel.com>
Subject: Re: [dpdk-dev] [PATCH] net/ice: fix missed pointer check
Date: Tue, 10 Nov 2020 10:16:31 +0000	[thread overview]
Message-ID: <7fa4273cdd65420c82f1a027d24b0fc5@intel.com> (raw)
In-Reply-To: <DM6PR11MB3308BC159DE3FCDDC5B9B3499AE90@DM6PR11MB3308.namprd11.prod.outlook.com>



> -----Original Message-----
> From: dev <dev-bounces@dpdk.org> On Behalf Of Ananyev, Konstantin
> Sent: Tuesday, November 10, 2020 6:05 PM
> To: Lu, Wenzhuo <wenzhuo.lu@intel.com>; dev@dpdk.org
> Cc: Lu, Wenzhuo <wenzhuo.lu@intel.com>
> Subject: Re: [dpdk-dev] [PATCH] net/ice: fix missed pointer check
> 
> 
> 
> > -----Original Message-----
> > From: dev <dev-bounces@dpdk.org> On Behalf Of Wenzhuo Lu
> > Sent: Tuesday, November 10, 2020 6:46 AM
> > To: dev@dpdk.org
> > Cc: Lu, Wenzhuo <wenzhuo.lu@intel.com>
> > Subject: [dpdk-dev] [PATCH] net/ice: fix missed pointer check
> >
> > The return value of rte_mempool_default_cache should be checked as it
> > can be NULL.
> >
> > Fixes: a4e480de268e ("net/ice: optimize Tx by using AVX512")
> >
> > Reported-by: Konstantin Ananyev <konstantin.ananyev@intel.com>
> > Signed-off-by: Wenzhuo Lu <wenzhuo.lu@intel.com>
> > ---
> >  drivers/net/ice/ice_rxtx_vec_avx512.c | 8 +++++++-
> >  1 file changed, 7 insertions(+), 1 deletion(-)
> >
> > diff --git a/drivers/net/ice/ice_rxtx_vec_avx512.c
> > b/drivers/net/ice/ice_rxtx_vec_avx512.c
> > index e5e7cc1..af6b324 100644
> > --- a/drivers/net/ice/ice_rxtx_vec_avx512.c
> > +++ b/drivers/net/ice/ice_rxtx_vec_avx512.c
> > @@ -781,9 +781,14 @@
> >
> >  	if (txq->offloads & DEV_TX_OFFLOAD_MBUF_FAST_FREE && (n & 31) == 0)
> {
> >  		struct rte_mempool *mp = txep[0].mbuf->pool;
> > +		void **cache_objs;
> >  		struct rte_mempool_cache *cache =
> rte_mempool_default_cache(mp,
> >  				rte_lcore_id());
> > -		void **cache_objs = &cache->objs[cache->len];
> > +
> > +		if (!cache || cache->len == 0)
> > +			goto normal;
> > +
> > +		cache_objs = &cache->objs[cache->len];
> >
> >  		if (n > RTE_MEMPOOL_CACHE_MAX_SIZE) {
> >  			rte_mempool_ops_enqueue_bulk(mp, (void *)txep, n); @@
> -821,6
> > +826,7 @@
> >  		goto done;
> >  	}
> >
> > +normal:
> >  	m = rte_pktmbuf_prefree_seg(txep[0].mbuf);
> >  	if (likely(m)) {
> >  		free[0] = m;
> > --
> 
> Acked-by: Konstantin Ananyev <konstantin.ananyev@intel.com>

Applied to dpdk-next-net-intel.

Thanks
Qi
> 
> > 1.9.3


      reply	other threads:[~2020-11-10 10:16 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-11-10  6:45 Wenzhuo Lu
2020-11-10 10:05 ` Ananyev, Konstantin
2020-11-10 10:16   ` Zhang, Qi Z [this message]

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