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

[Vladimir Kozlov]

On Thu, 9 Dec 2021 22:43:28 GMT, Scott Gibbons <duke at openjdk.java.net> 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.

Yes, new PR have to be filed based on jdk18 repo pointed by Sandhya because we need to fix it in JDK 18. After integration the fix will be automatically pushed into JDK 19 (current repo).

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

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