From 3695a870502202d13641117fb57133ae5673a942 Mon Sep 17 00:00:00 2001
From: dyson <dyson@FreeBSD.org>
Date: Sat, 27 Jul 1996 18:28:10 +0000
Subject: Under certain circumstances, reading the /proc/*/map file can crash
 the system.  Nonexistant objects were not handled correctly.

---
 sys/fs/procfs/procfs_map.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

(limited to 'sys/fs/procfs')

diff --git a/sys/fs/procfs/procfs_map.c b/sys/fs/procfs/procfs_map.c
index 0a586bf..ef71909 100644
--- a/sys/fs/procfs/procfs_map.c
+++ b/sys/fs/procfs/procfs_map.c
@@ -36,7 +36,7 @@
  *
  *	@(#)procfs_status.c	8.3 (Berkeley) 2/17/94
  *
- *	$Id: procfs_map.c,v 1.1 1996/06/17 22:53:27 dyson Exp $
+ *	$Id: procfs_map.c,v 1.2 1996/06/18 05:15:59 dyson Exp $
  */
 
 #include <sys/param.h>
@@ -128,7 +128,7 @@ procfs_domap(curp, p, pfs, uio)
 		for( lobj = tobj = obj; tobj; tobj = tobj->backing_object)
 			lobj = tobj;
 
-		switch(lobj->type) {
+		if (lobj) switch(lobj->type) {
 
 default:
 case OBJT_DEFAULT:
@@ -143,7 +143,10 @@ case OBJT_SWAP:
 case OBJT_DEVICE:
 			type = "device";
 			break;
+		} else {
+			type = "none";
 		}
+			
 
 		/*
 		 * format:
-- 
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