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[src/trunk]: src/sys/kern Add a NULL check on the structure (same logic as my...
details: https://anonhg.NetBSD.org/src/rev/45ac2c3f6485
branches: trunk
changeset: 846419:45ac2c3f6485
user: maxv <maxv%NetBSD.org@localhost>
date: Sat Nov 16 10:05:44 2019 +0000
description:
Add a NULL check on the structure (same logic as my previous change in this
file). For clarity, and to appease kUBSan.
diffstat:
sys/kern/vfs_subr.c | 7 ++++---
1 files changed, 4 insertions(+), 3 deletions(-)
diffs (28 lines):
diff -r d13f48e9836f -r 45ac2c3f6485 sys/kern/vfs_subr.c
--- a/sys/kern/vfs_subr.c Sat Nov 16 09:22:00 2019 +0000
+++ b/sys/kern/vfs_subr.c Sat Nov 16 10:05:44 2019 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: vfs_subr.c,v 1.473 2019/11/15 15:51:57 maxv Exp $ */
+/* $NetBSD: vfs_subr.c,v 1.474 2019/11/16 10:05:44 maxv Exp $ */
/*-
* Copyright (c) 1997, 1998, 2004, 2005, 2007, 2008 The NetBSD Foundation, Inc.
@@ -68,7 +68,7 @@
*/
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: vfs_subr.c,v 1.473 2019/11/15 15:51:57 maxv Exp $");
+__KERNEL_RCSID(0, "$NetBSD: vfs_subr.c,v 1.474 2019/11/16 10:05:44 maxv Exp $");
#ifdef _KERNEL_OPT
#include "opt_ddb.h"
@@ -799,7 +799,8 @@
* XXX The vnode may have been recycled, in which
* case it may have a new identity.
*/
- if (VIMPL_TO_VNODE(TAILQ_FIRST(slp)) == vp) {
+ vi = TAILQ_FIRST(slp);
+ if (vi != NULL && VIMPL_TO_VNODE(vi) == vp) {
/*
* Put us back on the worklist. The worklist
* routine will remove us from our current
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