Tomasz Grabiec eb08ab7ed9 lsa: Assert no cross-shard region locking ...

We observed an abort on bad_alloc which was not caused by real OOM,
but could be explained by cache region being locked from a different
shard, which is not allowed, concurrently with memory reclamation.

It's impossible now to prove this, or, if that was indeed the case, to
determine which code path was attempting such lock. This patch adds an
assert which would catch such incorrect locking at the attempt.

Refs #4978

2019-09-23 12:51:29 +02:00

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