On 2025-04-28 10:22, Osipov, Michael (IN IT IN) wrote:
> Hi folks,
> Hi Max,
>
> please assess the following bug I have found in Java 11+, it does not exist
> in Java 8. I have tried the following most versions on Azul Zulu/
> OpenJDK: 8, 11, 17, 21, 24 on multiple platforms. Searched JBS as well,
> nothing found.

I was able to debug this and find the cause.
It is a regression from https://github.com/openjdk/jdk11u/commit/bcac47f00ac6cf511ad7709fb9d39276ac27b049, introduced with https://bugs.openjdk.org/browse/JDK-8313657. I can even reproduce this with the HPE JDK 8 for HP-UX, so I guess they have backported that broken fix.

Connection#flushAndCloseOutputStream() closes the SaslOutputStream() which disposes the GSS security context and sets it to null. After that Connection#abandonRequest(LdapRequest, Control[]) is invoked which still uses the SaslOutputStream:
>             synchronized (this) {
>                 outStream.write(ber.getBuf(), 0, ber.getDataLen());
>                 outStream.flush();
>             }

Andrew,

can you log a bug here?

Michael

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