[src/netbsd-8]: src/sys/fs/puffs Pull up following revision(s) (requested by ...

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

details:   https://anonhg.NetBSD.org/src/rev/14d65d3beae9
branches:  netbsd-8
changeset: 445625:14d65d3beae9
user:      martin <martin%NetBSD.org@localhost>
date:      Tue Nov 06 14:47:38 2018 +0000

description:
Pull up following revision(s) (requested by manu in ticket #1082):

        sys/fs/puffs/puffs_vnops.c: revision 1.213

Fix use after RECLAIM in PUFFS filesystems

>From hannken@

When puffs_cookie2vnode() misses an entry and vrele() it operations
puffs_vnop_reclaim() and puffs_vnop_fsync() get called with a VNON
vnode.

Do not notify the server in this case as the cookie is stale.

diffstat:

 sys/fs/puffs/puffs_vnops.c |  13 +++++++++++--
 1 files changed, 11 insertions(+), 2 deletions(-)

diffs (41 lines):

diff -r 3ba1db418f05 -r 14d65d3beae9 sys/fs/puffs/puffs_vnops.c
--- a/sys/fs/puffs/puffs_vnops.c        Tue Nov 06 14:44:22 2018 +0000
+++ b/sys/fs/puffs/puffs_vnops.c        Tue Nov 06 14:47:38 2018 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: puffs_vnops.c,v 1.211 2017/05/26 14:21:01 riastradh Exp $      */
+/*     $NetBSD: puffs_vnops.c,v 1.211.2.1 2018/11/06 14:47:38 martin Exp $     */
 
 /*
  * Copyright (c) 2005, 2006, 2007  Antti Kantee.  All Rights Reserved.
@@ -30,7 +30,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: puffs_vnops.c,v 1.211 2017/05/26 14:21:01 riastradh Exp $");
+__KERNEL_RCSID(0, "$NetBSD: puffs_vnops.c,v 1.211.2.1 2018/11/06 14:47:38 martin Exp $");
 
 #include <sys/param.h>
 #include <sys/buf.h>
@@ -1467,6 +1467,10 @@
                notifyserver = false;
        }
 
+       /* See the comment on top of puffs_vnop_inactive(). */
+       if (vp->v_type == VNON)
+               notifyserver = false;
+
        /*
         * purge info from kernel before issueing FAF, since we
         * don't really know when we'll get around to it after
@@ -1720,6 +1724,11 @@
        pn = VPTOPP(vp);
        KASSERT(pn != NULL);
        pmp = MPTOPUFFSMP(vp->v_mount);
+
+       /* See the comment on top of puffs_vnop_inactive(). */
+       if (vp->v_type == VNON)
+               return 0;
+
        if (ap->a_flags & FSYNC_WAIT) {
                mutex_enter(&pn->pn_sizemtx);
        } else {