From: Vitaly Kuznetsov <vkuznets@redhat.com>
Date: Fri, 29 Jan 2016 16:50:41 +0000 (+0100)
Subject: reset runstate_guest handles on soft reset
X-Git-Url: http://xenbits.xensource.com/gitweb?a=commitdiff_plain;h=7ff56b7e4d2d110db93124457cbbdb8c6bee08e6;p=people%2Fliuw%2Flibxenctrl-split%2Fxen.git

reset runstate_guest handles on soft reset

runstate_guest handles need to be reset to prevent update_runstate_area()
corrupting guest's memory after we resume the guest.

Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
---

diff --git a/xen/common/domain.c b/xen/common/domain.c
index 2979c1b70d..603b7188ad 100644
--- a/xen/common/domain.c
+++ b/xen/common/domain.c
@@ -1074,7 +1074,10 @@ int domain_soft_reset(struct domain *d)
     grant_table_warn_active_grants(d);
 
     for_each_vcpu ( d, v )
+    {
+        set_xen_guest_handle(runstate_guest(v), NULL);
         unmap_vcpu_info(v);
+    }
 
     rc = arch_domain_soft_reset(d);
     if ( !rc )