[src/trunk]: src/sys VOP_BMAP() may be called via ioctl(FIOGETBMAP) on any vn...

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

details:   https://anonhg.NetBSD.org/src/rev/d261f851faa2
branches:  trunk
changeset: 984230:d261f851faa2
user:      chs <chs%NetBSD.org@localhost>
date:      Mon Jun 28 17:52:12 2021 +0000

description:
VOP_BMAP() may be called via ioctl(FIOGETBMAP) on any vnode that applications
can open.  change various pseudo-fs *_bmap methods return an error instead of
panic.

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

diffstat:

 sys/fs/ptyfs/ptyfs_vnops.c       |  6 +++---
 sys/miscfs/fdesc/fdesc_vnops.c   |  6 +++---
 sys/miscfs/kernfs/kernfs_vnops.c |  6 +++---
 sys/miscfs/procfs/procfs_vnops.c |  6 +++---
 4 files changed, 12 insertions(+), 12 deletions(-)

diffs (108 lines):

diff -r f6b779ee9384 -r d261f851faa2 sys/fs/ptyfs/ptyfs_vnops.c
--- a/sys/fs/ptyfs/ptyfs_vnops.c        Mon Jun 28 11:27:00 2021 +0000
+++ b/sys/fs/ptyfs/ptyfs_vnops.c        Mon Jun 28 17:52:12 2021 +0000
@@ -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_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 *);
diff -r f6b779ee9384 -r d261f851faa2 sys/miscfs/fdesc/fdesc_vnops.c
--- a/sys/miscfs/fdesc/fdesc_vnops.c    Mon Jun 28 11:27:00 2021 +0000
+++ b/sys/miscfs/fdesc/fdesc_vnops.c    Mon Jun 28 17:52:12 2021 +0000
@@ -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_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 *);
diff -r f6b779ee9384 -r d261f851faa2 sys/miscfs/kernfs/kernfs_vnops.c
--- a/sys/miscfs/kernfs/kernfs_vnops.c  Mon Jun 28 11:27:00 2021 +0000
+++ b/sys/miscfs/kernfs/kernfs_vnops.c  Mon Jun 28 17:52:12 2021 +0000
@@ -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 @@
 #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 *);
diff -r f6b779ee9384 -r d261f851faa2 sys/miscfs/procfs/procfs_vnops.c
--- a/sys/miscfs/procfs/procfs_vnops.c  Mon Jun 28 11:27:00 2021 +0000
+++ b/sys/miscfs/procfs/procfs_vnops.c  Mon Jun 28 17:52:12 2021 +0000
@@ -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_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 *);