Module Name: src
Committed By: chs
Date: Tue Aug 3 20:25:43 UTC 2021
Modified Files:
src/sys/kern: vfs_wapbl.c
Log Message:
initialize wc_unused to 0, to avoid writing uninitialized memory to disk.
detected by KMSAN.
To generate a diff of this commit:
cvs rdiff -u -r1.108 -r1.109 src/sys/kern/vfs_wapbl.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/kern/vfs_wapbl.c
diff -u src/sys/kern/vfs_wapbl.c:1.108 src/sys/kern/vfs_wapbl.c:1.109
--- src/sys/kern/vfs_wapbl.c:1.108 Sun Apr 12 17:02:52 2020
+++ src/sys/kern/vfs_wapbl.c Tue Aug 3 20:25:43 2021
@@ -1,4 +1,4 @@
-/* $NetBSD: vfs_wapbl.c,v 1.108 2020/04/12 17:02:52 jdolecek Exp $ */
+/* $NetBSD: vfs_wapbl.c,v 1.109 2021/08/03 20:25:43 chs Exp $ */
/*-
* Copyright (c) 2003, 2008, 2009 The NetBSD Foundation, Inc.
@@ -36,7 +36,7 @@
#define WAPBL_INTERNAL
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: vfs_wapbl.c,v 1.108 2020/04/12 17:02:52 jdolecek Exp $");
+__KERNEL_RCSID(0, "$NetBSD: vfs_wapbl.c,v 1.109 2021/08/03 20:25:43 chs Exp $");
#include <sys/param.h>
#include <sys/bitops.h>
@@ -2559,6 +2559,7 @@ wapbl_write_blocks(struct wapbl *wl, off
wc->wc_type = WAPBL_WC_BLOCKS;
wc->wc_len = blocklen;
wc->wc_blkcount = 0;
+ wc->wc_unused = 0;
while (bp && (wc->wc_blkcount < wl->wl_brperjblock)) {
/*
* Make sure all the physical block numbers are up to
@@ -2647,6 +2648,7 @@ wapbl_write_revocations(struct wapbl *wl
wc->wc_type = WAPBL_WC_REVOCATIONS;
wc->wc_len = blocklen;
wc->wc_blkcount = 0;
+ wc->wc_unused = 0;
while (wd && (wc->wc_blkcount < wl->wl_brperjblock)) {
wc->wc_blocks[wc->wc_blkcount].wc_daddr =
wd->wd_blkno;
