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-rw-r--r--sys/arch/i386/i386/locore.s4
1 files changed, 3 insertions, 1 deletions
diff --git a/sys/arch/i386/i386/locore.s b/sys/arch/i386/i386/locore.s
index bf53884d22c..5254c3e7932 100644
--- a/sys/arch/i386/i386/locore.s
+++ b/sys/arch/i386/i386/locore.s
@@ -1,4 +1,4 @@
-/* $OpenBSD: locore.s,v 1.82 2005/02/10 04:06:01 weingart Exp $ */
+/* $OpenBSD: locore.s,v 1.83 2005/04/17 07:33:13 tedu Exp $ */
/* $NetBSD: locore.s,v 1.145 1996/05/03 19:41:19 christos Exp $ */
/*-
@@ -1298,6 +1298,8 @@ ENTRY(copyinstr)
1: decl %edx
jz 2f
+ cmpl $VM_MAXUSER_ADDRESS,%esi
+ jae _C_LABEL(copystr_fault)
lodsb
stosb
testb %al,%al