Raise error if a block can not be found from a CUDA tensor (#30870)
Summary:
After several discussions, we agreed not to put any extra safety check for recordStream as either the check will cause failures in certain scenarios or there is no need to throw for user errors.
As a summary, it simply does what is described in https://github.com/pytorch/pytorch/issues/27405, check if a tensor is indeed allocated by a CUDACachingAllocator instance, if it is, then throw internal error if a block can not be retrieved.
Pull Request resolved: https://github.com/pytorch/pytorch/pull/30870
Differential Revision: D18851669
Pulled By: yxia11
fbshipit-source-id: c2f01798cd24f1fd0f35db8764057d5d333dab95
