[jdk21u-dev] RFR: 8330611: AES-CTR vector intrinsic may read out of bounds (x86_64, AVX-512)

[Severin Gehwolf]

On Sat, 27 Apr 2024 02:01:19 GMT, Martin Balao <mbalao at openjdk.org> wrote:

>> HI @martinuy, please do the 22 backport first. Also, to me, this seems a quite risky fix to backport right after pushing to head. Could we wait for the October release?
>
>> HI @martinuy, please do the 22 backport first. Also, to me, this seems a quite risky fix to backport right after pushing to head. Could we wait for the October release?
> 
> With the review done for the main line patch and  the testing done for both main line and jdk21u, I think that the risk has been reasonably addressed. There is time until the next release for further testing if it goes in now. The other side of the story is that if the bug conditions are met, a jdk21u JVM will crash with a segmentation fault. While there is a workaround (-XX:-UseAESCTRIntrinsics), the bug does not happen consistently enough and is hard to troubleshoot. @charlesconnell you may want to give some input on how this bug affects you.

@martinuy Please apply for approval. `jdk21u-dev` collects fixes for October now.

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PR Comment: https://git.openjdk.org/jdk21u-dev/pull/531#issuecomment-2163488404