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authorhannken <hannken@NetBSD.org>2019-02-20 10:02:51 +0000
committerhannken <hannken@NetBSD.org>2019-02-20 10:02:51 +0000
commit234ee9d38596b4e7cdcfc0f92fd3a457897df4d7 (patch)
treed548a118b11520fc9889843980b32ec837f45382 /sys
parent30d0dc6fad41e8564362770b7bef220ac4c1acb6 (diff)
Fix vnode locking for opendisk(), must lock for VOP_OPEN().
Diffstat (limited to 'sys')
-rw-r--r--sys/kern/subr_disk_open.c5
1 files changed, 3 insertions, 2 deletions
diff --git a/sys/kern/subr_disk_open.c b/sys/kern/subr_disk_open.c
index 336a84241e3..106112de9a4 100644
--- a/sys/kern/subr_disk_open.c
+++ b/sys/kern/subr_disk_open.c
@@ -1,4 +1,4 @@
-/* $NetBSD: subr_disk_open.c,v 1.13 2015/12/08 20:36:15 christos Exp $ */
+/* $NetBSD: subr_disk_open.c,v 1.14 2019/02/20 10:02:51 hannken Exp $ */
/*-
* Copyright (c) 2006 The NetBSD Foundation, Inc.
@@ -27,7 +27,7 @@
*/
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: subr_disk_open.c,v 1.13 2015/12/08 20:36:15 christos Exp $");
+__KERNEL_RCSID(0, "$NetBSD: subr_disk_open.c,v 1.14 2019/02/20 10:02:51 hannken Exp $");
#include <sys/param.h>
#include <sys/conf.h>
@@ -65,6 +65,7 @@ opendisk(device_t dv)
if (bdevvp(dev, &tmpvn))
panic("%s: can't alloc vnode for %s", __func__,
device_xname(dv));
+ vn_lock(tmpvn, LK_EXCLUSIVE | LK_RETRY);
error = VOP_OPEN(tmpvn, FREAD | FSILENT, NOCRED);
if (error) {
/*