0001-Handle-missing-waiting-list-gracefully.patch

From a1d9d3122e780bb7d4c384eb668398089ced5df3 Mon Sep 17 00:00:00 2001
From: Lasse Karstensen <lasse.karstensen@gmail.com>
Date: Sat, 16 Jan 2016 15:32:16 +0100
Subject: [PATCH] Handle missing waiting list gracefully.

In 5c8268062bf06a2700dd27331c29c48d650c9197 the checks are relaxed,
but this commit (or part of) was not brought into 4.1.
---
 bin/varnishd/cache/cache_hash.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/bin/varnishd/cache/cache_hash.c b/bin/varnishd/cache/cache_hash.c
index 18b9628..27a1f24 100644
--- a/bin/varnishd/cache/cache_hash.c
+++ b/bin/varnishd/cache/cache_hash.c
@@ -522,8 +522,10 @@ hsh_rush(struct worker *wrk, struct objhead *oh)
 	CHECK_OBJ_NOTNULL(wrk, WORKER_MAGIC);
 	CHECK_OBJ_NOTNULL(oh, OBJHEAD_MAGIC);
 	Lck_AssertHeld(&oh->mtx);
+	if (oh->waitinglist == NULL)
+		return;
 	wl = oh->waitinglist;
-	CHECK_OBJ_NOTNULL(wl, WAITINGLIST_MAGIC);
+	CHECK_OBJ(wl, WAITINGLIST_MAGIC);
 	for (u = 0; u < cache_param->rush_exponent; u++) {
 		req = VTAILQ_FIRST(&wl->list);
 		if (req == NULL)
--
1.9.5 (Apple Git-50.3)