[src/netbsd-9]: src/sys/fs/udf Pull up following revision(s) (requested by re...

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

details:   https://anonhg.NetBSD.org/src/rev/b159f3fbd753
branches:  netbsd-9
changeset: 365691:b159f3fbd753
user:      martin <martin%NetBSD.org@localhost>
date:      Mon Apr 18 10:54:21 2022 +0000

description:
Pull up following revision(s) (requested by reinoud in ticket #1437):

        sys/fs/udf/udf_allocation.c: revision 1.46

Revere modification of initializer; it can lead to race conditions where two
allocation would pick the `empty' space causing a panic later on.

diffstat:

 sys/fs/udf/udf_allocation.c |  8 ++++----
 1 files changed, 4 insertions(+), 4 deletions(-)

diffs (29 lines):

diff -r 2477256d9c59 -r b159f3fbd753 sys/fs/udf/udf_allocation.c
--- a/sys/fs/udf/udf_allocation.c       Wed Apr 13 03:39:58 2022 +0000
+++ b/sys/fs/udf/udf_allocation.c       Mon Apr 18 10:54:21 2022 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: udf_allocation.c,v 1.40.4.1 2022/03/13 09:48:32 martin Exp $ */
+/* $NetBSD: udf_allocation.c,v 1.40.4.2 2022/04/18 10:54:21 martin Exp $ */
 
 /*
  * Copyright (c) 2006, 2008 Reinoud Zandijk
@@ -28,7 +28,7 @@
 
 #include <sys/cdefs.h>
 #ifndef lint
-__KERNEL_RCSID(0, "$NetBSD: udf_allocation.c,v 1.40.4.1 2022/03/13 09:48:32 martin Exp $");
+__KERNEL_RCSID(0, "$NetBSD: udf_allocation.c,v 1.40.4.2 2022/04/18 10:54:21 martin Exp $");
 #endif /* not lint */
 
 
@@ -863,8 +863,8 @@
                ump->vat_entries++;
        }
 
-       /* mark entry with initialiser just in case */
-       lb_map = udf_rw32(0xffffffff);
+       /* mark entry with non free-space initialiser just in case */
+       lb_map = udf_rw32(0xfffffffe);
        udf_vat_write(ump->vat_node, (uint8_t *) &lb_map, 4,
                ump->vat_offset + lb_num *4);
        ump->vat_last_free_lb = lb_num;