From: chuck <chuck@openbsd.org>
Date: Sat, 13 Jan 1996 03:12:12 +0000 (+0000)
Subject: have mapdev() panic if size == 0 to be safe (catches config errors)
X-Git-Url: http://artulab.com/gitweb/?a=commitdiff_plain;h=e9aa562604c86a9e35ca137dfcf81a9d413cc230;p=openbsd

have mapdev() panic if size == 0 to be safe (catches config errors)
---

diff --git a/sys/arch/sparc/sparc/machdep.c b/sys/arch/sparc/sparc/machdep.c
index b07e6110b47..9529ea31b0e 100644
--- a/sys/arch/sparc/sparc/machdep.c
+++ b/sys/arch/sparc/sparc/machdep.c
@@ -873,6 +873,8 @@ mapdev(rr, virt, offset, size, bustype)
 		iobase = IODEV_BASE;
 
 	size = round_page(size);
+	if (size == 0) panic("mapdev: zero size");
+
 	if (virt)
 		v = trunc_page(virt);
 	else {