From 58740d22ab313771dc1a8829f69a17e620a2d3e4 Mon Sep 17 00:00:00 2001 From: Keir Fraser Date: Thu, 2 Apr 2009 07:53:11 +0100 Subject: [PATCH] x86: A further fix to paging_log_dirty_op() -- do not unmap_domain_page(NULL) Signed-off-by: Keir Fraser --- xen/arch/x86/mm/paging.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/xen/arch/x86/mm/paging.c b/xen/arch/x86/mm/paging.c index 0df7376c24..e9313e14f1 100644 --- a/xen/arch/x86/mm/paging.c +++ b/xen/arch/x86/mm/paging.c @@ -430,7 +430,8 @@ int paging_log_dirty_op(struct domain *d, struct xen_domctl_shadow_op *sc) if ( l3 ) unmap_domain_page(l3); } - unmap_domain_page(l4); + if ( l4 ) + unmap_domain_page(l4); if ( pages < sc->pages ) sc->pages = pages; -- 2.30.2