openjdk team mailing list archive

[Pauli <1510009@xxxxxxxxxxxxxxxxxx>]

"atk-wrapper went through some quite big updates between 15.04 and
15.10, so I'd be betting on that being the issue (or it somehow
triggering a Java edge case)"

I don't think that is the primary bug. Bugs in Debian and Redhat are
much older and look like perfect match to this bug. It feels like a race
condition somewhere but I don't know how to debug jvm. Maybe some kind
of trace from xcb telling which threads are using which connection would
help.

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https://bugs.launchpad.net/bugs/1510009

Title:
  Java 1.8.0_66 is extremely deadlock prone regarding AWT/GTK
  interaction

Status in openjdk-8 package in Ubuntu:
  Confirmed

Bug description:
  Since upgrading to Ubuntu 15.10 from Ubuntu 15.04, the various GUI
  applications that I run, including Netbeans and Minecraft have been
  suffering from dead/waitlocks which prevent them from operating
  properly. Since I have reproduced this issue these two completely
  different codebases, I am moving the bug further upstream.

  The original Netbeans bug report can be viewed here: https://netbeans.org/bugzilla/show_bug.cgi?id=256124
  Essentially, during routine interaction and calling of various AWT methods, somewhere between 8u45 (15.04) and 8u66 (15.10), something broke causing the application to hang intermittently when these methods are called.

  Some sample jstack traces are attached, the issue should be fairly
  obvious to spot.

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