svn commit: r196298 - in stable/8/sys: . amd64/include/xen cddl/contrib/opensolaris cddl/contrib/opensolaris/uts/common/fs/zfs contrib/dev/acpica contrib/pf dev/ata dev/cxgb dev/mfi dev/xen/netfron...

[Pawel Jakub Dawidek]

Author: pjd
Date: Mon Aug 17 09:14:58 2009
New Revision: 196298
URL: http://svn.freebsd.org/changeset/base/196298

Log:
  MFC r196297:
  
  Fix panic in zfs recv code. The last vnode (mountpoint's vnode) can have
  0 usecount.
  
  Reported by:	Thomas Backman <serenity at exscape.org>
  Approved by:	re (kib)

Modified:
  stable/8/sys/   (props changed)
  stable/8/sys/amd64/include/xen/   (props changed)
  stable/8/sys/cddl/contrib/opensolaris/   (props changed)
  stable/8/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_vfsops.c
  stable/8/sys/contrib/dev/acpica/   (props changed)
  stable/8/sys/contrib/pf/   (props changed)
  stable/8/sys/dev/ata/   (props changed)
  stable/8/sys/dev/cxgb/   (props changed)
  stable/8/sys/dev/mfi/   (props changed)
  stable/8/sys/dev/xen/netfront/   (props changed)
  stable/8/sys/dev/xen/xenpci/   (props changed)
  stable/8/sys/modules/dtrace/dtnfsclient/   (props changed)
  stable/8/sys/modules/ip6_mroute_mod/   (props changed)
  stable/8/sys/modules/ipmi/ipmi_linux/   (props changed)
  stable/8/sys/netinet/ipfw/ip_dummynet.c   (props changed)
  stable/8/sys/netinet/ipfw/ip_fw2.c   (props changed)
  stable/8/sys/netinet/ipfw/ip_fw_nat.c   (props changed)
  stable/8/sys/netinet/ipfw/ip_fw_pfil.c   (props changed)
  stable/8/sys/netipx/spx_reass.c   (props changed)
  stable/8/sys/xen/evtchn.h   (props changed)
  stable/8/sys/xen/hypervisor.h   (props changed)
  stable/8/sys/xen/xen_intr.h   (props changed)

Modified: stable/8/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_vfsops.c
==============================================================================
--- stable/8/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_vfsops.c	Mon Aug 17 09:13:22 2009	(r196297)
+++ stable/8/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_vfsops.c	Mon Aug 17 09:14:58 2009	(r196298)
@@ -917,7 +917,7 @@ zfsvfs_teardown(zfsvfs_t *zfsvfs, boolea
 	for (zp = list_head(&zfsvfs->z_all_znodes); zp != NULL;
 	    zp = list_next(&zfsvfs->z_all_znodes, zp))
 		if (zp->z_dbuf) {
-			ASSERT(ZTOV(zp)->v_count > 0);
+			ASSERT(ZTOV(zp)->v_count >= 0);
 			zfs_znode_dmu_fini(zp);
 		}
 	mutex_exit(&zfsvfs->z_znodes_lock);