From 90df702bf86e4d9a9a2f319743598bc7aa1f8f57 Mon Sep 17 00:00:00 2001
From: Maxim Dounin <mdounin@mdounin.ru>
Date: Mon, 8 Sep 2014 21:36:03 +0400
Subject: [PATCH] Fixed ETag memory allocation error handling.

The etag->hash must be set to 0 to avoid an empty ETag header being
returned with the 500 Internal Server Error page after the memory
allocation failure.

Reported by Markus Linnala.
---
 src/http/ngx_http_core_module.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/http/ngx_http_core_module.c b/src/http/ngx_http_core_module.c
index 4071b6126..3b36f4a19 100644
--- a/src/http/ngx_http_core_module.c
+++ b/src/http/ngx_http_core_module.c
@@ -1837,6 +1837,7 @@ ngx_http_set_etag(ngx_http_request_t *r)
 
     etag->value.data = ngx_pnalloc(r->pool, NGX_OFF_T_LEN + NGX_TIME_T_LEN + 3);
     if (etag->value.data == NULL) {
+        etag->hash = 0;
         return NGX_ERROR;
     }