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@krk This change now passes all automated pre-integration checks.

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8212155: Race condition when posting dynamic_code_generated event leads to JVM crash

Reviewed-by: phh, shade

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At the time when this comment was updated there had been 1 new commit pushed to the master branch:

• c0a36d8: 8366574: Bump update version of OpenJDK: 8u482

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

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Webrevs

• 01: Full - Incremental (bb97234c)
• 00: Full (6dac15dc)

Failing tests seem unrelated:

Windows x64 release and debug build:

No configurations found for /cygdrive/c/a/jdk8u-dev/jdk8u-dev/jdk/! Please run configure to create a configuration.
Makefile:55: *** Cannot continue.  Stop.

macOS x64 jdk/security_infra:

security/infra/java/security/cert/CertPathValidator/certification/CAInterop.java#microsoftecc2017 

Looks similar to #673

Linux x86 hotspot/tier1:

gc/concurrentMarkSweep/CheckAllocateAndSystemGC.java 

Test timed out:

ACTION: main -- Error. Program `/home/runner/jdk-linux-x86/jdk-1.8.0-internal+0_linux-x86_bin/j2sdk-image/bin/java' timed out (timeout set to 480000ms, elapsed time including timeout handling was 480396ms).
REASON: User specified action: run main/othervm CheckAllocateAndSystemGC 

also observed in #628 (comment)

⚠️ @krk This change is now ready for you to apply for maintainer approval. This can be done directly in each associated issue or by using the /approval command.

/approval request Fixes a critical JVM crash from a race condition when posting dynamic_code_generated JVMTI events.

The patch required manual conflict resolution in JvmtiExport.cpp because JvmtiThreadState::state_for() was previously refactored in this branch.

For JDK 8, DynamicCodeGeneratedTest.sh was added as the runner, which compiles the library first.

This fix has been stable in mainline since June 2021. The risk is low, as the fix is a minimal, defensive check.

@krk
8212155: The approval request has been created successfully.

/approval request Fixes a critical JVM crash from a race condition when posting dynamic_code_generated JVMTI events. We have seen the JVM crashes with production services running with async-profiler on this code path.

The patch required manual conflict resolution, see 8u PR. This fix has been stable in mainline since June 2021; there is a minor testbug bugtail. The risk is low and benefit is high: adds a simple defensive check, avoids crashes seen in the wild, matches the backports in all other currently active JDK releases.

@krk
8212155: The approval request has been updated successfully.

@gnu-andrew, @jerboaa -- would you be the right reviewers for this? It is a fairly safe change that avoids production JVM crashes with profilers.

jdk8u-dev is currently closed for pushes. I'll approve once JDK-8366574 is in.

In the meantime please merge latest master to avoid the windows build failure in CI.

After merge from master, the windows build error is gone, thanks for the suggestion.

New failures seem unrelated to the current PR:

CAInterop

There are CAInterop.java failures in different architectures, similar to #673. The CA roots in question are actalisauthenticationrootca and in some cases entrustrootcag4.

macOS x64 jdk/tier1

multiple failures with "Target VM failed to initialize", similar to the closed https://bugs.openjdk.org/browse/JDK-8286193

GC segfault

Segfault in CompactibleFreeListSpace::block_size on Linux x86 hotspot/tier1 gc/6581734/Test6581734.java is tracked in JDK-8332853.

/integrate

@krk
Your change (at version bb97234) is now ready to be sponsored by a Committer.

/sponsor

Going to push as commit 942d6d0.
Since your change was applied there has been 1 commit pushed to the master branch:

• c0a36d8: 8366574: Bump update version of OpenJDK: 8u482

Your commit was automatically rebased without conflicts.

@shipilev @krk Pushed as commit 942d6d0.

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