Avoid segfault in metaplugin when the plugin command is simplified

diff --git a/bacula/src/plugins/fd/pluginlib/metaplugin.cpp b/bacula/src/plugins/fd/pluginlib/metaplugin.cpp
index 499a2e985108875d8d942ca823de15d82dfa2af8..269e11694d559ec421fc0956c3f8024265a02aeb 100644 (file)
--- a/bacula/src/plugins/fd/pluginlib/metaplugin.cpp
+++ b/bacula/src/plugins/fd/pluginlib/metaplugin.cpp
@@ -2229,6 +2229,10 @@ bRC METAPLUGIN::startBackupFile(bpContext *ctx, struct save_pkt *sp)
    POOL_MEM cmd(PM_FNAME);
    int reqparams = 2;
 
+   if (backend.is_ctx_null()) {
+      JMSG0(ctx, M_FATAL, "Unable to use the backend properly\n");
+      return bRC_Error;
+   }
    if (job_cancelled) {
       return bRC_Error;
    }