RFR: 8273108: RunThese24H crashes with SEGV in markWord::displaced_mark_helper() after JDK-8268276

Mon Dec 13 17:39:14 UTC 2021

On Mon, 13 Dec 2021 10:17:07 GMT, Tobias Hartmann <thartmann at openjdk.org> wrote:

>> The base64 decoder overwrites memory past the end of its output buffer in certain cases.  It will not overwrite if the encoded string length is < 64 bytes.  It also will not overwrite if the encoded string length mod 64 is >= 16.  So the case where it *will* overwrite is when the input string length (the encoded byte length) mod 64 is less than 16.
>> 
>> I also added a test case to detect this overrun.
>
> As Vladimir mentioned, the fix will be forward ported to JDK 19 automatically. This PR should be closed without integration.

Thank you, @TobiHartmann.  Closing this PR now.

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PR: https://git.openjdk.java.net/jdk/pull/6786