RFR: 8313796: AsyncGetCallTrace crash on unreadable interpreter method pointer [v3]

[Richard Startin]

> We have observed invalid pointers to the interpreted method at Datadog. The fix is based on a discussion with and a code snippet from @parttimenerd.

Richard Startin has updated the pull request incrementally with one additional commit since the last revision:

  use Andrew Haley's suggested implementation

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Changes:
  - all: https://git.openjdk.org/jdk/pull/15178/files
  - new: https://git.openjdk.org/jdk/pull/15178/files/5520d1e0..5a613b3a

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=15178&range=02
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=15178&range=01-02

  Stats: 22 lines in 5 files changed: 16 ins; 1 del; 5 mod
  Patch: https://git.openjdk.org/jdk/pull/15178.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/15178/head:pull/15178

PR: https://git.openjdk.org/jdk/pull/15178