[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

Change-Id: I4b07cb2d90fc1af523a3b91817f18ec1e99100fc