rgw: fix dereference of empty std::optional in RGWDeleteMultiObj::execute()

Fixes a crash that occurs when RGW is executed without an async context.

Fixes: https://tracker.ceph.com/issues/58243
Signed-off-by: Cory Snyder <csnyder@iland.com>
(cherry picked from commit 91ff9591b095e8e73e4dff5c4a3fe3c66c0de9b6)

diff --git a/src/rgw/rgw_op.cc b/src/rgw/rgw_op.cc
index 727dc1b257b7d78114d24bb7b106bc4c50a06cb7..01f2f52a7e35aa43a328e6a366fe37b00de27dcf 100644 (file)
--- a/src/rgw/rgw_op.cc
+++ b/src/rgw/rgw_op.cc
@@ -7024,9 +7024,11 @@ void RGWDeleteMultiObj::execute(optional_yield y)
       handle_individual_object(obj_key, y, &*formatter_flush_cond);
     }
   }
-  wait_flush(y, &*formatter_flush_cond, [this, n=multi_delete->objects.size()] {
-    return n == ops_log_entries.size();
-  });
+  if (formatter_flush_cond) {
+    wait_flush(y, &*formatter_flush_cond, [this, n=multi_delete->objects.size()] {
+      return n == ops_log_entries.size();
+    });
+  }
 
   /*  set the return code to zero, errors at this point will be
   dumped to the response */