From: Vladimír Čunát <vladimir.cunat@nic.cz>
Date: Tue, 12 Oct 2021 07:52:16 +0000 (+0200)
Subject: daemon/worker: work around a rare crash
X-Git-Tag: v5.4.2~1^2
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=refs%2Fenvironments%2Fobs-knot-resolver-bs4hbr%2Fdeployments%2F1887;p=thirdparty%2Fknot-resolver.git

daemon/worker: work around a rare crash

So far we have no idea how it can happen, but in this (rare) case
it seems fine to keep the process running.
---

diff --git a/daemon/worker.c b/daemon/worker.c
index 792d7578a..fc91c712f 100644
--- a/daemon/worker.c
+++ b/daemon/worker.c
@@ -621,7 +621,7 @@ int qr_task_on_send(struct qr_task *task, const uv_handle_t *handle, int status)
 			return status;
 		// start the timer
 		struct kr_query *qry = array_tail(task->ctx->req.rplan.pending);
-		if (kr_fails_assert(qry))
+		if (kr_fails_assert(qry && task->transport))
 			return status;
 		size_t timeout = task->transport->timeout;
 		int ret = session_timer_start(s, on_udp_timeout, timeout, 0);