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List:       openjdk-serviceability-dev
Subject:    Integrated: 8245877: assert(_value != __null) failed: resolving NULL _value in JvmtiExport::post_com
From:       Leonid Mesnik <lmesnik () openjdk ! java ! net>
Date:       2021-06-30 2:09:07
Message-ID: z0tFHyuDkwBrZYa5l66oSr4HJyn-KkfzcnOkGvehLuY=.b5298c3f-b2b6-4c86-9834-45f012d2c348 () github ! com
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On Sat, 26 Jun 2021 17:48:15 GMT, Leonid Mesnik <lmesnik@openjdk.org> wrote:

> The crash happens because nmethod might become a zombie before it is enqueued in \
> JvmtiDeferredEventQueue or after it is dequeued from it. The crash is reproduced by \
> serviceability/jvmti/CompiledMethodLoad/Zombie.java. However, it takes ~3K  runs to \
> hit it. I verified the fix by running this test >100K on each platform. Also, I \
> verified that protecting in 'void JvmtiDeferredEventQueue::post(JvmtiEnv* env)' is \
> not enough.

This pull request has now been integrated.

Changeset: b969136b
Author:    Leonid Mesnik <lmesnik@openjdk.org>
URL:       https://git.openjdk.java.net/jdk/commit/b969136b9fcf5f977ebe466f5f9de5c520413e84
                
Stats:     7 lines in 4 files changed: 3 ins; 1 del; 3 mod

8245877: assert(_value != __null) failed: resolving NULL _value in \
JvmtiExport::post_compiled_method_load

Reviewed-by: sspitsyn, dholmes, coleenp

-------------

PR: https://git.openjdk.java.net/jdk/pull/4602


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