[src/trunk]: src/sys/compat/linux/common do not dereference p_vmspace, if it ...

[itojun <itojun%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/59142ff41193
branches:  trunk
changeset: 507448:59142ff41193
user:      itojun <itojun%NetBSD.org@localhost>
date:      Thu Mar 22 08:26:14 2001 +0000

description:
do not dereference p_vmspace, if it is not initialized yet (NULL).

diffstat:

 sys/compat/linux/common/linux_exec.c |  10 ++++++----
 1 files changed, 6 insertions(+), 4 deletions(-)

diffs (24 lines):

diff -r cc74a38ee1a0 -r 59142ff41193 sys/compat/linux/common/linux_exec.c
--- a/sys/compat/linux/common/linux_exec.c      Thu Mar 22 08:14:23 2001 +0000
+++ b/sys/compat/linux/common/linux_exec.c      Thu Mar 22 08:26:14 2001 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: linux_exec.c,v 1.46 2001/03/15 19:18:20 manu Exp $     */
+/*     $NetBSD: linux_exec.c,v 1.47 2001/03/22 08:26:14 itojun Exp $   */
 
 /*-
  * Copyright (c) 1994, 1995, 1998, 2000 The NetBSD Foundation, Inc.
@@ -150,9 +150,11 @@
 
        memset(p->p_emuldata, '\0', sizeof(struct linux_emuldata));
        
-       /* Set the process idea of the break to the real value */
-       ((struct linux_emuldata*)(p->p_emuldata))->p_break = 
-           p->p_vmspace->vm_daddr + ctob(p->p_vmspace->vm_dsize);
+       if (p->p_vmspace) {
+               /* Set the process idea of the break to the real value */
+               ((struct linux_emuldata*)(p->p_emuldata))->p_break = 
+                   p->p_vmspace->vm_daddr + ctob(p->p_vmspace->vm_dsize);
+       }
 }
 
 /*