From 72c1e2e351d984d0425a20f2c772951cbc36f13e Mon Sep 17 00:00:00 2001
From: Radoslaw Zarzynski <rzarzynski@mirantis.com>
Date: Tue, 25 Apr 2017 12:22:54 +0200
Subject: [PATCH] rgw: fix RadosGW hang during multi-chunk upload of AWSv4.

Fixes: http://tracker.ceph.com/issues/19754
Signed-off-by: Radoslaw Zarzynski <rzarzynski@mirantis.com>
---
 src/rgw/rgw_op.cc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/rgw/rgw_op.cc b/src/rgw/rgw_op.cc
index 465f1e82b2d..d6dfb6506a4 100644
--- a/src/rgw/rgw_op.cc
+++ b/src/rgw/rgw_op.cc
@@ -3027,7 +3027,7 @@ void RGWPutObj::execute()
     }
 
     bufferlist &data = data_in;
-    if (s->aws4_auth_streaming_mode) {
+    if (len && s->aws4_auth_streaming_mode) {
       /* use unwrapped data */
       data = s->aws4_auth->bl;
       len = data.length();
-- 
2.39.5