From fbd5658db7cddda76e6c6dd3026952b5a17a70ba Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Micha=C5=82=20K=C4=99pie=C5=84?= <michal@isc.org>
Date: Tue, 13 Mar 2018 11:28:11 +0100
Subject: [PATCH] Fix a zone database reference counting bug in dump_done()

A typo in commit d39ab7440e introduced a bug in zone database reference
counting which leads to a crash if dumping one version of a slave zone
is not finished by the time transferring a newer version from a master
completes.  Correct the typo to fix reference counting, thus preventing
crashes.
---
 lib/dns/zone.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/dns/zone.c b/lib/dns/zone.c
index a74afcaf53..ea19a8fa2c 100644
--- a/lib/dns/zone.c
+++ b/lib/dns/zone.c
@@ -10345,7 +10345,7 @@ dump_done(void *arg, isc_result_t result) {
 			dns_db_t *zdb = NULL;
 			if (dns_zone_getdb(zone, &zdb) == ISC_R_SUCCESS) {
 				zone_journal_compact(zone, zdb, serial);
-				dns_db_detach(&db);
+				dns_db_detach(&zdb);
 			}
 		} else if (tresult == ISC_R_SUCCESS) {
 			compact = ISC_TRUE;