8340313: Crash due to invalid oop in nmethod after C1 patching

[GoeLin]

I backport this for parity with 21.0.7-oracle.

I had to do trivial resolves:

src/hotspot/cpu/riscv/nativeInst_riscv.cpp
The first lock to be changed already uses CodeCache_lock.

src/hotspot/share/runtime/mutexLocker.cpp/hpp
Resolved due to context

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Progress

• Change must be properly reviewed (1 review required, with at least 1 Reviewer)
• Change must not contain extraneous whitespace
• JDK-8340313 needs maintainer approval
• Commit message must refer to an issue

Issue

• JDK-8340313: Crash due to invalid oop in nmethod after C1 patching (Bug - P2)

Reviewing

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$ git checkout pull/1284

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$ git checkout pull/1284
$ git pull https://git.openjdk.org/jdk21u-dev.git pull/1284/head

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[bridgekeeper]

👋 Welcome back goetz! A progress list of the required criteria for merging this PR into master will be added to the body of your pull request. There are additional pull request commands available for use with this pull request.

[openjdk]

❗ This change is not yet ready to be integrated.
See the Progress checklist in the description for automated requirements.

[openjdk]

This backport pull request has now been updated with issue from the original commit.

[mlbridge]

Webrevs

• 00: Full (20b3b31e)

[GoeLin]

GHA failure: Twice well konwn wget issue, unrelated.