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>

diff --git a/src/rgw/rgw_op.cc b/src/rgw/rgw_op.cc
index 465f1e82b2d83966edcb09978c4e024db127acb3..d6dfb6506a415bba8f784e085b0f33eeef8fde74 100644 (file)
--- 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();