Fix integer overflows in recovery procedure. am: 1273956e69 am: 5978a71d29 am: 877dcba47a am: f4ee1720f3 am: cae056f219 am: 682d691052
am: ae68f02272

* commit 'ae68f0227262d08f250e4cccda6f03b9981bf56d':
  Fix integer overflows in recovery procedure.