From: Evan Hunt <each@isc.org>
Date: Mon, 11 Jul 2022 23:55:48 +0000 (-0700)
Subject: clear fctx->magic and fetch->magic when destroying
X-Git-Tag: v9.19.4~38^2
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=5ec077e6aad95d654d723862683ae7941d59083c;p=thirdparty%2Fbind9.git

clear fctx->magic and fetch->magic when destroying

fctx_destroy() and dns_resolver_destroyfetch() did not clear the
'magic' field during destruction.
---

diff --git a/lib/dns/resolver.c b/lib/dns/resolver.c
index 984765e19f4..e10404859d9 100644
--- a/lib/dns/resolver.c
+++ b/lib/dns/resolver.c
@@ -4360,6 +4360,8 @@ fctx_destroy(fetchctx_t *fctx) {
 
 	FCTXTRACE("destroy");
 
+	fctx->magic = 0;
+
 	res = fctx->res;
 	bucket = fctx->bucket;
 
@@ -10866,6 +10868,8 @@ dns_resolver_destroyfetch(dns_fetch_t **fetchp) {
 
 	FTRACE("destroyfetch");
 
+	fetch->magic = 0;
+
 	LOCK(&fctx->bucket->lock);
 
 	/*