[src/trunk]: src/sys/dev/dkwedge dk(4): Fix lock assertion in size increase: ...

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

details:   https://anonhg.NetBSD.org/src/rev/62d606dd4b5e
branches:  trunk
changeset: 374503:62d606dd4b5e
user:      riastradh <riastradh%NetBSD.org@localhost>
date:      Sat Apr 29 06:23:37 2023 +0000

description:
dk(4): Fix lock assertion in size increase: parent's, not wedge's.

Reported-by: syzbot+d4dc610473cacc5183dd%syzkaller.appspotmail.com@localhost
https://syzkaller.appspot.com/bug?id=e18ddae8283d6fab44cfb1ac7e3f8e791f8c0700

diffstat:

 sys/dev/dkwedge/dk.c |  6 +++---
 1 files changed, 3 insertions(+), 3 deletions(-)

diffs (27 lines):

diff -r 11916938c3a2 -r 62d606dd4b5e sys/dev/dkwedge/dk.c
--- a/sys/dev/dkwedge/dk.c      Sat Apr 29 03:36:55 2023 +0000
+++ b/sys/dev/dkwedge/dk.c      Sat Apr 29 06:23:37 2023 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: dk.c,v 1.150 2023/04/22 13:11:50 riastradh Exp $       */
+/*     $NetBSD: dk.c,v 1.151 2023/04/29 06:23:37 riastradh Exp $       */
 
 /*-
  * Copyright (c) 2004, 2005, 2006, 2007 The NetBSD Foundation, Inc.
@@ -30,7 +30,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: dk.c,v 1.150 2023/04/22 13:11:50 riastradh Exp $");
+__KERNEL_RCSID(0, "$NetBSD: dk.c,v 1.151 2023/04/29 06:23:37 riastradh Exp $");
 
 #ifdef _KERNEL_OPT
 #include "opt_dkwedge.h"
@@ -333,7 +333,7 @@ static void
 dkwedge_size_increase(struct dkwedge_softc *sc, uint64_t size)
 {
 
-       KASSERT(mutex_owned(&sc->sc_dk.dk_openlock));
+       KASSERT(mutex_owned(&sc->sc_parent->dk_openlock));
 
        rw_enter(&sc->sc_sizelock, RW_WRITER);
        KASSERTMSG(size >= sc->sc_size,