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diff src/http/ngx_http_upstream.c @ 5453:b7b8e2fa7ebd

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Fixed null pointer dereference with $upstream_cache_last_modified.
author Ruslan Ermilov <ru@nginx.com>
date Tue, 03 Dec 2013 15:11:24 +0400
parents 43ccaf8e8728
children 07dd5bd222ac
line wrap: on
line diff
--- a/src/http/ngx_http_upstream.c
+++ b/src/http/ngx_http_upstream.c
@@ -4555,7 +4555,8 @@ ngx_http_upstream_cache_last_modified(ng
 {
     u_char  *p;
 
-    if (!r->upstream->conf->cache_revalidate
+    if (r->upstream == NULL
+        || !r->upstream->conf->cache_revalidate
         || r->upstream->cache_status != NGX_HTTP_CACHE_EXPIRED
         || r->cache->last_modified == -1)
     {