RFR: 8292158: AES-CTR cipher state corruption with AVX-512 [v3]

[AJ Ferguson]

> Fix cipher state corruption when encrypting/decrypting less than 16 bytes at a time.

AJ Ferguson has updated the pull request incrementally with one additional commit since the last revision:

  Add regression test

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Changes:
  - all: https://git.openjdk.org/jdk/pull/9635/files
  - new: https://git.openjdk.org/jdk/pull/9635/files/360304cf..8fc3e429

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=9635&range=02
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=9635&range=01-02

  Stats: 95 lines in 1 file changed: 95 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/9635.diff
  Fetch: git fetch https://git.openjdk.org/jdk pull/9635/head:pull/9635

PR: https://git.openjdk.org/jdk/pull/9635