From: Patrick Fu <patrick.fu@intel.com>
Date: Tue, 21 Jul 2020 12:10:57 +0000 (+0000)
Subject: vhost: fix double-free with zero-copy
X-Git-Url: http://git.droids-corp.org/?a=commitdiff_plain;h=a608436b635460c1be0d0d561838aa197cf32c87;p=dpdk.git

vhost: fix double-free with zero-copy

zmbufs should be set to NULL when getting freed to avoid double free on
the same buffer pointer

Fixes: b0a985d1f340 ("vhost: add dequeue zero copy")
Cc: stable@dpdk.org

Signed-off-by: Patrick Fu <patrick.fu@intel.com>
Reviewed-by: Maxime Coquelin <maxime.coquelin@redhat.com>
---

diff --git a/lib/librte_vhost/vhost_user.c b/lib/librte_vhost/vhost_user.c
index df0db8a07d..9ddeae3622 100644
--- a/lib/librte_vhost/vhost_user.c
+++ b/lib/librte_vhost/vhost_user.c
@@ -1934,6 +1934,7 @@ free_zmbufs(struct vhost_virtqueue *vq)
 	drain_zmbuf_list(vq);
 
 	rte_free(vq->zmbufs);
+	vq->zmbufs = NULL;
 }
 
 /*