Apply by doing:
	cd /usr/src/sys/arch/i386/i386
	patch < tsstrap.patch

build a new kernel, ie.
	cd /usr/src/sys/arch/i386/conf
	config GENERIC
	cd ../compile/GENERIC
	make
	mv /bsd /bsd.1
	cp bsd /bsd
	reboot

===================================================================
RCS file: /usr/OpenBSD/cvs/src/sys/arch/i386/i386/trap.c,v
retrieving revision 1.30
retrieving revision 1.31
diff -u -r1.30 -r1.31
--- src/sys/arch/i386/i386/trap.c	1999/02/26 04:42:14	1.30
+++ src/sys/arch/i386/i386/trap.c	1999/03/21 03:30:01	1.31
@@ -324,6 +324,11 @@
 #endif
 		sv.sival_int = rcr2();
 		trapsignal(p, SIGSEGV, vftype, SEGV_MAPERR, sv);
+		goto out;
+
+	case T_TSSFLT|T_USER:
+		sv.sival_int = frame.tf_eip;
+		trapsignal(p, SIGBUS, vftype, BUS_OBJERR, sv);
 		goto out;
 
 	case T_SEGNPFLT|T_USER:
