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Make dead vfs ops "vfs_statvfs" and "vfs_vptofh" return EOPNOTSUPP. 

Both operations may originate from (possible dead) vnodes.

Reported-by: syzbot+eceb203d44457742be3b@syzkaller.appspotmail.com
This commit is contained in:
hannken 2022-07-08 07:44:17 +00:00
parent cc261bb6d7
commit 4c6398a93d
1 changed files with 4 additions and 4 deletions
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8
sys/miscfs/deadfs/dead_vfsops.c
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@ -1,4 +1,4 @@
/* $NetBSD: dead_vfsops.c,v 1.11 2022/03/19 13:53:32 hannken Exp $ */
/* $NetBSD: dead_vfsops.c,v 1.12 2022/07/08 07:44:17 hannken Exp $ */
/*-
* Copyright (c) 2014 The NetBSD Foundation, Inc.
@ -30,7 +30,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: dead_vfsops.c,v 1.11 2022/03/19 13:53:32 hannken Exp $");
__KERNEL_RCSID(0, "$NetBSD: dead_vfsops.c,v 1.12 2022/07/08 07:44:17 hannken Exp $");
#include <sys/param.h>
#include <sys/systm.h>
@ -60,13 +60,13 @@ struct vfsops dead_vfsops = {
.vfs_unmount = (void *)dead_panic,
.vfs_root = (void *)dead_panic,
.vfs_quotactl = (void *)dead_panic,
.vfs_statvfs = (void *)dead_panic,
.vfs_statvfs = (void *)eopnotsupp,
.vfs_sync = (void *)dead_panic,
.vfs_vget = (void *)dead_panic,
.vfs_loadvnode = (void *)dead_panic,
.vfs_newvnode = dead_newvnode,
.vfs_fhtovp = (void *)dead_panic,
.vfs_vptofh = (void *)dead_panic,
.vfs_vptofh = (void *)eopnotsupp,
.vfs_init = (void *)dead_panic,
.vfs_reinit = (void *)dead_panic,
.vfs_done = (void *)dead_panic,