diff -r 2d3ceb082114 xen/acm/acm_simple_type_enforcement_hooks.c
--- a/xen/acm/acm_simple_type_enforcement_hooks.c	Mon Feb 26 09:13:50 2007 +0000
+++ b/xen/acm/acm_simple_type_enforcement_hooks.c	Mon Feb 26 14:42:53 2007 -0500
@@ -208,6 +208,7 @@ ste_init_state(struct acm_ste_policy_buf
                 rdomid = d->evtchn[port]->u.unbound.remote_domid;
                 if ((rdom = get_domain_by_id(rdomid)) == NULL) {
                     printk("%s: Error finding domain to id %x!\n", __func__, rdomid);
+                    spin_unlock(&d->evtchn_lock);
                     goto out;
                 }
                 /* rdom now has remote domain */