Module Name: src
Committed By: hannken
Date: Thu Mar 7 11:09:48 UTC 2019
Modified Files:
src/sys/kern: vfs_vnops.c
Log Message:
Change vn_openchk() to fail VNON and VBAD with error ENXIO.
Reported-by: syzbot+d66b1be08516a4d2d...@syzkaller.appspotmail.com
Reported-by: syzbot+c5eaef5a8af535c3b...@syzkaller.appspotmail.com
To generate a diff of this commit:
cvs rdiff -u -r1.199 -r1.200 src/sys/kern/vfs_vnops.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_vnops.c
diff -u src/sys/kern/vfs_vnops.c:1.199 src/sys/kern/vfs_vnops.c:1.200
--- src/sys/kern/vfs_vnops.c:1.199 Mon Feb 4 04:18:59 2019
+++ src/sys/kern/vfs_vnops.c Thu Mar 7 11:09:48 2019
@@ -1,4 +1,4 @@
-/* $NetBSD: vfs_vnops.c,v 1.199 2019/02/04 04:18:59 mrg Exp $ */
+/* $NetBSD: vfs_vnops.c,v 1.200 2019/03/07 11:09:48 hannken Exp $ */
/*-
* Copyright (c) 2009 The NetBSD Foundation, Inc.
@@ -66,7 +66,7 @@
*/
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: vfs_vnops.c,v 1.199 2019/02/04 04:18:59 mrg Exp $");
+__KERNEL_RCSID(0, "$NetBSD: vfs_vnops.c,v 1.200 2019/03/07 11:09:48 hannken Exp $");
#include "veriexec.h"
@@ -297,6 +297,9 @@ vn_openchk(struct vnode *vp, kauth_cred_
int permbits = 0;
int error;
+ if (vp->v_type == VNON || vp->v_type == VBAD)
+ return ENXIO;
+
if ((fflags & O_DIRECTORY) != 0 && vp->v_type != VDIR)
return ENOTDIR;
