From 5e2f9254e6c941f124dec554d04c956d18e1252f Mon Sep 17 00:00:00 2001
From: Jean Baptiste Favre <debian@jbfavre.org>
Date: Sat, 24 Aug 2019 08:00:22 +0100
Subject: [PATCH] fix-segfault

Gbp-Pq: Name 0011-fix-segfault.patch
---
 iocore/cache/CachePages.cc | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/iocore/cache/CachePages.cc b/iocore/cache/CachePages.cc
index 4578c4b2..089cb590 100644
--- a/iocore/cache/CachePages.cc
+++ b/iocore/cache/CachePages.cc
@@ -337,6 +337,13 @@ ShowCache::handleCacheEvent(int event, Event *e)
     CacheHTTPInfoVector *vec = &(cache_vc->vector);
     int alt_count            = vec->count();
     if (alt_count) {
+      // check cache_vc->first_buf is NULL, response cache lookup busy.
+      if (cache_vc->first_buf == nullptr) {
+        cache_vc->do_io_close(-1);
+        CHECK_SHOW(show("<H3>Cache Lookup Busy, please try again</H3>\n"));
+        return complete(event, e);
+      }
+
       Doc *d = (Doc *)(cache_vc->first_buf->data());
       time_t t;
       char tmpstr[4096];
-- 
2.30.2