bind/backport-0040-Prevent-loads_pending-going-to-zero-while-kicking-th.patch
jiangheng ad37c37958 backport some patches from community
(cherry picked from commit a9fd9ece9b9436b6103d084920c6897ef1adbae6)
2022-09-03 21:36:21 +08:00

34 lines
1.0 KiB
Diff

From 1f7ccaba1bbb245cf06918fd397a0a1743f263f1 Mon Sep 17 00:00:00 2001
From: Mark Andrews <marka@isc.org>
Date: Fri, 21 Aug 2020 18:35:38 +1000
Subject: [PATCH] Prevent loads_pending going to zero while kicking the loads.
Conflict: NA
Reference: https://gitlab.isc.org/isc-projects/bind9/-/commit/1f7ccaba1bbb245cf06918fd397a0a1743f263f1
---
lib/dns/zt.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/lib/dns/zt.c b/lib/dns/zt.c
index 04d7823d8b..8098b90d1f 100644
--- a/lib/dns/zt.c
+++ b/lib/dns/zt.c
@@ -296,9 +296,13 @@ dns_zt_asyncload2(dns_zt_t *zt, dns_zt_allloaded_t alldone, void *arg,
RWLOCK(&zt->rwlock, isc_rwlocktype_write);
INSIST(zt->loads_pending == 0);
+ /*
+ * Prevent loads_pending going to zero while kicking off the loads.
+ */
+ zt->loads_pending++;
result = dns_zt_apply2(zt, false, NULL, asyncload, &params);
- pending = zt->loads_pending;
+ pending = --zt->loads_pending;
if (pending != 0) {
zt->loaddone = alldone;
zt->loaddone_arg = arg;
--
2.23.0