From: Avi Kivity <avi@redhat.com>
Date: Mon, 9 Jan 2012 11:59:50 +0000 (+0200)
Subject: vhost: fix mem_sections memory corruption
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=637f7a6a01e09bc39f7b3a24257a9cd6ea396ca0;p=qemu.git

vhost: fix mem_sections memory corruption

A memset() used to delete an entry in an array did not take into account
the array element's size.

Signed-off-by: Avi Kivity <avi@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
---

diff --git a/hw/vhost.c b/hw/vhost.c
index 541c7163b2..d924fb0e4d 100644
--- a/hw/vhost.c
+++ b/hw/vhost.c
@@ -456,7 +456,7 @@ static void vhost_region_del(MemoryListener *listener,
             == section->offset_within_address_space) {
             --dev->n_mem_sections;
             memmove(&dev->mem_sections[i], &dev->mem_sections[i+1],
-                    dev->n_mem_sections - i);
+                    (dev->n_mem_sections - i) * sizeof(*dev->mem_sections));
             break;
         }
     }