From 11f8123bbf36801ec436dc77d42a8e253eed1fb7 Mon Sep 17 00:00:00 2001
From: Yu Watanabe <watanabe.yu+github@gmail.com>
Date: Sat, 5 Feb 2022 22:03:19 +0900
Subject: [PATCH] resolve: fix possible memleak

Fortunately, unlike the issue fixed in the previous commit, the memleak
should be superficial and not become apparent, as the queries handled
here are managed by the stub stream, and will be freed when the stream
is closed.

Just for safety, and slightly reducing the runtime memory usage by the
stub stream.

(cherry picked from commit fe8c5ce615ee2123f17b1f0b3728c439e19e4b5b)
(cherry picked from commit 4dbc210124b4303ecadb6cdb28a4a4c821e1150b)

Conflict:NA
Reference:https://github.com/systemd/systemd/commit/11f8123bbf36801ec436dc77d42a8e253eed1fb7
---
 src/resolve/resolved-dns-stub.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/resolve/resolved-dns-stub.c b/src/resolve/resolved-dns-stub.c
index 49da916576..8040db70f9 100644
--- a/src/resolve/resolved-dns-stub.c
+++ b/src/resolve/resolved-dns-stub.c
@@ -755,8 +755,10 @@ static void dns_stub_query_complete(DnsQuery *q) {
                                  * packet doesn't answer our question. In that case let's restart the query,
                                  * now with the redirected question. We'll */
                                 r = dns_query_go(q);
-                                if (r < 0)
+                                if (r < 0) {
                                         log_debug_errno(r, "Failed to restart query: %m");
+                                        dns_query_free(q);
+                                }
 
                                 return;
                         }
-- 
2.33.0