Module Name: src
Committed By: maxv
Date: Wed Mar 28 19:50:57 UTC 2018
Modified Files:
src/sys/arch/x86/x86: spectre.c
Log Message:
oldlwp can be NULL, so ensure it isn't.
To generate a diff of this commit:
cvs rdiff -u -r1.2 -r1.3 src/sys/arch/x86/x86/spectre.c
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
Modified files:
Index: src/sys/arch/x86/x86/spectre.c
diff -u src/sys/arch/x86/x86/spectre.c:1.2 src/sys/arch/x86/x86/spectre.c:1.3
--- src/sys/arch/x86/x86/spectre.c:1.2 Wed Mar 28 16:02:49 2018
+++ src/sys/arch/x86/x86/spectre.c Wed Mar 28 19:50:57 2018
@@ -1,4 +1,4 @@
-/* $NetBSD: spectre.c,v 1.2 2018/03/28 16:02:49 maxv Exp $ */
+/* $NetBSD: spectre.c,v 1.3 2018/03/28 19:50:57 maxv Exp $ */
/*
* Copyright (c) 2018 NetBSD Foundation, Inc.
@@ -34,7 +34,7 @@
*/
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: spectre.c,v 1.2 2018/03/28 16:02:49 maxv Exp $");
+__KERNEL_RCSID(0, "$NetBSD: spectre.c,v 1.3 2018/03/28 19:50:57 maxv Exp $");
#include <sys/param.h>
#include <sys/systm.h>
@@ -69,7 +69,7 @@ speculation_barrier(struct lwp *oldlwp,
/*
* From kernel thread to kernel thread, no need for a barrier.
*/
- if ((oldlwp->l_flag & LW_SYSTEM) &&
+ if ((oldlwp != NULL && (oldlwp->l_flag & LW_SYSTEM)) &&
(newlwp->l_flag & LW_SYSTEM))
return;
