From 50f9ea01499be508918e33923e004bf5dcf390e3 Mon Sep 17 00:00:00 2001
From: Will Andrews <will@freebsd.org>
Date: Sun, 26 Apr 2015 15:30:46 -0700
Subject: [PATCH] Illumos 5814 - bpobj_iterate_impl(): Close a refcount leak
 iterating on a sublist.

5814 bpobj_iterate_impl(): Close a refcount leak iterating on a sublist.
Reviewed by: Prakash Surya <prakash.surya@delphix.com>
Reviewed by: Matthew Ahrens <mahrens@delphix.com>
Reviewed by: Paul Dagnelie <paul.dagnelie@delphix.com>
Reviewed by: Simon Klinkert <simon.klinkert@gmail.com>
Approved by: Gordon Ross <gwr@nexenta.com>

References:
  https://www.illumos.org/issues/5814
  https://github.com/illumos/illumos-gate/commit/b67dde11

Ported-by: DHE <git@dehacked.net>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes #3368
---
 module/zfs/bpobj.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/module/zfs/bpobj.c b/module/zfs/bpobj.c
index 7c8f932f5..25767e83f 100644
--- a/module/zfs/bpobj.c
+++ b/module/zfs/bpobj.c
@@ -301,8 +301,10 @@ bpobj_iterate_impl(bpobj_t *bpo, bpobj_itor_t func, void *arg, dmu_tx_t *tx,
 		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) {
-- 
2.40.0