Re: [dpdk-dev] [PATCH v2] vhost: fix index overflow for packed ring in async vhost

> -Original Message- > From: Jiang, Cheng1 > Sent: Thursday, July 15, 2021 5:51 PM > To: maxime.coque...@redhat.com; Xia, Chenbo > Cc: dev@dpdk.org; Hu, Jiayu ; Yang, YvonneX > ; Jiang, Cheng1 ; > sta...@dpdk.org > Subject: [PATCH v2] vhost: fix index overflow for packed ring in async vho

Re: [dpdk-dev] [PATCH v2] vhost: fix index overflow for packed ring in async vhost

> -Original Message- > From: Jiang, Cheng1 > Sent: Thursday, July 15, 2021 5:51 PM > To: maxime.coque...@redhat.com; Xia, Chenbo > Cc: dev@dpdk.org; Hu, Jiayu ; Yang, YvonneX > ; Jiang, Cheng1 ; > sta...@dpdk.org > Subject: [PATCH v2] vhost: fix index overflow for packed ring in async vho

[dpdk-dev] [PATCH v2] vhost: fix index overflow for packed ring in async vhost

We introduced some new indexes in packed ring of async vhost. They will eventually overflow and lead to errors if the ring size is not a power of 2. This patch is to check and keep these indexes within a reasonable range. Fixes: 873e8dad6f49 ("vhost: support packed ring in async datapath") Cc: sta