VOP_BMAP() may be called via ioctl(FIOGETBMAP) on any vnode that appl…

…ications

can open.  change various pseudo-fs *_bmap methods return an error instead of
panic.

Reported-by: syzbot+8289a3eaf2ba60958c87@syzkaller.appspotmail.com

sys/fs/ptyfs/ptyfs_vnops.c

@@ -1,4 +1,4 @@
-/*	$NetBSD: ptyfs_vnops.c,v 1.62 2020/11/27 14:43:57 christos Exp $	*/
+/*	$NetBSD: ptyfs_vnops.c,v 1.63 2021/06/28 17:52:12 chs Exp $	*/
 
 /*
  * Copyright (c) 1993, 1995
@@ -76,7 +76,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: ptyfs_vnops.c,v 1.62 2020/11/27 14:43:57 christos Exp $");
+__KERNEL_RCSID(0, "$NetBSD: ptyfs_vnops.c,v 1.63 2021/06/28 17:52:12 chs Exp $");
 
 #include <sys/param.h>
 #include <sys/systm.h>
@@ -144,7 +144,7 @@ int	ptyfs_reclaim	(void *);
 int	ptyfs_inactive	(void *);
 #define	ptyfs_lock	genfs_lock
 #define	ptyfs_unlock	genfs_unlock
-#define	ptyfs_bmap	genfs_badop
+#define	ptyfs_bmap	genfs_eopnotsupp
 #define	ptyfs_strategy	genfs_badop
 int	ptyfs_print	(void *);
 int	ptyfs_pathconf	(void *);

sys/miscfs/fdesc/fdesc_vnops.c

@@ -1,4 +1,4 @@
-/*	$NetBSD: fdesc_vnops.c,v 1.135 2021/05/01 15:08:14 hannken Exp $	*/
+/*	$NetBSD: fdesc_vnops.c,v 1.136 2021/06/28 17:52:13 chs Exp $	*/
 
 /*
  * Copyright (c) 1992, 1993
@@ -41,7 +41,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: fdesc_vnops.c,v 1.135 2021/05/01 15:08:14 hannken Exp $");
+__KERNEL_RCSID(0, "$NetBSD: fdesc_vnops.c,v 1.136 2021/06/28 17:52:13 chs Exp $");
 
 #include <sys/param.h>
 #include <sys/systm.h>
@@ -104,7 +104,7 @@ int	fdesc_inactive(void *);
 int	fdesc_reclaim(void *);
 #define	fdesc_lock	genfs_lock
 #define	fdesc_unlock	genfs_unlock
-#define	fdesc_bmap	genfs_badop
+#define	fdesc_bmap	genfs_eopnotsupp
 #define	fdesc_strategy	genfs_badop
 int	fdesc_print(void *);
 int	fdesc_pathconf(void *);

sys/miscfs/kernfs/kernfs_vnops.c

@@ -1,4 +1,4 @@
-/*	$NetBSD: kernfs_vnops.c,v 1.166 2020/06/27 17:29:19 christos Exp $	*/
+/*	$NetBSD: kernfs_vnops.c,v 1.167 2021/06/28 17:52:13 chs Exp $	*/
 
 /*
  * Copyright (c) 1992, 1993
@@ -39,7 +39,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: kernfs_vnops.c,v 1.166 2020/06/27 17:29:19 christos Exp $");
+__KERNEL_RCSID(0, "$NetBSD: kernfs_vnops.c,v 1.167 2021/06/28 17:52:13 chs Exp $");
 
 #include <sys/param.h>
 #include <sys/systm.h>
@@ -166,7 +166,7 @@ int	kernfs_reclaim(void *);
 #define	kernfs_lock	genfs_lock
 #define	kernfs_unlock	genfs_unlock
 #define	kernfs_bmap	genfs_badop
-#define	kernfs_strategy	genfs_badop
+#define	kernfs_strategy	genfs_eopnotsupp
 int	kernfs_print(void *);
 #define	kernfs_islocked	genfs_islocked
 int	kernfs_pathconf(void *);

sys/miscfs/procfs/procfs_vnops.c

@@ -1,4 +1,4 @@
-/*	$NetBSD: procfs_vnops.c,v 1.215 2020/06/27 17:29:19 christos Exp $	*/
+/*	$NetBSD: procfs_vnops.c,v 1.216 2021/06/28 17:52:13 chs Exp $	*/
 
 /*-
  * Copyright (c) 2006, 2007, 2008, 2020 The NetBSD Foundation, Inc.
@@ -105,7 +105,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: procfs_vnops.c,v 1.215 2020/06/27 17:29:19 christos Exp $");
+__KERNEL_RCSID(0, "$NetBSD: procfs_vnops.c,v 1.216 2021/06/28 17:52:13 chs Exp $");
 
 #include <sys/param.h>
 #include <sys/atomic.h>
@@ -237,7 +237,7 @@ int	procfs_inactive(void *);
 int	procfs_reclaim(void *);
 #define	procfs_lock	genfs_lock
 #define	procfs_unlock	genfs_unlock
-#define	procfs_bmap	genfs_badop
+#define	procfs_bmap	genfs_eopnotsupp
 #define	procfs_strategy	genfs_badop
 int	procfs_print(void *);
 int	procfs_pathconf(void *);