tree 8624193d04f76733f405aad0d9d05f0b34942fb6
parent e39a7b6a800c9cf49c4ca60b1392d51eff21a738
author Greg Kaiser <gkaiser@google.com> 1584979419 -0700
committer Greg Kaiser <gkaiser@google.com> 1584979797 +0000

ShellSubscriber: Avoid rollover bug

We initialize 'mToken' instead of leaving it uninitialized, making
it much less likely to rollover.  In additional, we change our
check to inequality, to handle rollover if that were to happen.

There is the (theoretical) possibility of exactly 2^32 other
requests being claimed between our claim and our check.  It's
assumed that is essentially impossible and not a concern.

Test: TreeHugger
Bug: 150619687
Change-Id: Iee303e05082a6b3b31ed546bd62d3afe67c771d8