[DO NOT MERGE] Throw exception if slot has invalid offset am: 69e347f7ef  -s ours am: 1c732801ab am: 78861ad53e  -s ours am: 13df27e68b am: a3912b6a1b am: 0766ba70c0 am: 46dbe6a7d0  -s ours am: 567e742daf am: 5a16e06272 am: 73ceabb948 am: e2aeaa9998
am: 52a0172003

Change-Id: I4d80106165ea38fd44ef3a73aeeaac02077219be