Comment 0 for bug 1750349

Please pick this upstream commit in 18.04 release.
This is required if a large number of records are injected into a pool, which can cause the kvp daemon to crash.

We found this to be missing from bionic server daily image.

hv: kvp: Avoid reading past allocated blocks from KVP file
297d6b6e56c2977fc504c61bbeeaa21296923f89