[PATCH] examples/vhost: fix use after free

[Xia, Chenbo]

> -----Original Message-----
> From: Xia, Chenbo <chenbo.xia at intel.com>
> Sent: Friday, July 15, 2022 1:55 PM
> To: Ma, WenwuX <wenwux.ma at intel.com>; maxime.coquelin at redhat.com;
> dev at dpdk.org
> Cc: Hu, Jiayu <jiayu.hu at intel.com>; Wang, Yinan <yinan.wang at intel.com>; He,
> Xingguang <xingguang.he at intel.com>; Ling, WeiX <weix.ling at intel.com>; Wang,
> YuanX <yuanx.wang at intel.com>; stable at dpdk.org
> Subject: RE: [PATCH] examples/vhost: fix use after free
> 
> > -----Original Message-----
> > From: Ma, WenwuX <wenwux.ma at intel.com>
> > Sent: Thursday, July 14, 2022 1:11 PM
> > To: maxime.coquelin at redhat.com; Xia, Chenbo <chenbo.xia at intel.com>;
> > dev at dpdk.org
> > Cc: Hu, Jiayu <jiayu.hu at intel.com>; Wang, Yinan <yinan.wang at intel.com>;
> He,
> > Xingguang <xingguang.he at intel.com>; Ling, WeiX <weix.ling at intel.com>;
> Wang,
> > YuanX <yuanx.wang at intel.com>; Ma, WenwuX <wenwux.ma at intel.com>;
> > stable at dpdk.org
> > Subject: [PATCH] examples/vhost: fix use after free
> >
> > In async_enqueue_pkts(), the failed pkts will
> > be freed before return, but, the failed pkts may be
> > retried later, it will cause use after free. So,
> > we free the failed pkts after retry.
> >
> > Fixes: 1907ce4baec3 ("examples/vhost: fix retry logic on Rx path")
> > Cc: stable at dpdk.org
> >
> > Signed-off-by: Wenwu Ma <wenwux.ma at intel.com>
> > ---
> >  examples/vhost/main.c | 19 ++++++++++++-------
> >  1 file changed, 12 insertions(+), 7 deletions(-)
> >
> 

Reviewed-by: Chenbo Xia <chenbo.xia at intel.com>