Author: will
Date: Thu Sep 18 15:37:53 2014
New Revision: 271781
URL: http://svnweb.freebsd.org/changeset/base/271781
Log:
bpobj_iterate_impl(): Close a refcount leak iterating on a sublist.
If bpobj_space() returned non-zero here, the sublist would have been
left open, along with the bonus buffer hold it requires. This call
does not invoke any calls to bpobj_close() itself.
This bug doesn't have any known vector, but was found on inspection.
MFC after: 1 week
Sponsored by: Spectra Logic
Affects: All ZFS versions starting 21 May 2010 (illumos cde58dbc)
MFSpectraBSD: r1050998 on 2014/03/26
Modified:
head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/bpobj.c
Modified: head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/bpobj.c
==============================================================================
--- head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/bpobj.c Thu Sep 18
15:26:12 2014 (r271780)
+++ head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/bpobj.c Thu Sep 18
15:37:53 2014 (r271781)
@@ -301,8 +301,10 @@ bpobj_iterate_impl(bpobj_t *bpo, bpobj_i
if (free) {
err = bpobj_space(&sublist,
&used_before, &comp_before, &uncomp_before);
- if (err)
+ if (err != 0) {
+ bpobj_close(&sublist);
break;
+ }
}
err = bpobj_iterate_impl(&sublist, func, arg, tx, free);
if (free) {
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