RFR: 8304725: AsyncGetCallTrace can cause SIGBUS on M1

[Johannes Bechberger]

Fixes the issue by transitioning the thread into the WXWrite mode while walking the stack in AsyncGetCallTrace.

Tested on my M1 mac.

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Commit messages:
 - Fix 8304725

Changes: https://git.openjdk.org/jdk/pull/13144/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=13144&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8304725
  Stats: 4 lines in 1 file changed: 4 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/13144.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/13144/head:pull/13144

PR: https://git.openjdk.org/jdk/pull/13144