Java crashes during Eclipse Helios Start

[Paweł Smoliński]

It happens when I press "OK" button on workspace-chose-window during Eclipse start (clean installation)

#
# A fatal error has been detected by the Java Runtime Environment:
#
# SIGSEGV (0xb) at pc=0x00007fd843bb62b0, pid=2671, tid=140567681361680
#
# JRE version: 6.0_18-b18
# Java VM: OpenJDK 64-Bit Server VM (14.0-b16 mixed mode linux-amd64 )
# Derivative: IcedTea6 1.8
# Distribution: Ubuntu lucid (development branch), package 6b18-1.8-0ubuntu1
# Problematic frame:
# C [libgobject-2.0.so.0+0xf2b0] g_object_get_qdata+0x20
#
# An error report file with more information is saved as:
# /home/pawel/bin/hs_err_pid2671.log
#
# If you would like to submit a bug report, please include
# instructions how to reproduce the bug and visit:
# https://bugs.launchpad.net/ubuntu/+source/openjdk-6/
# The crash happened outside the Java Virtual Machine in native code.
# See problematic frame for where to report the bug.
#

[apetrelli (antonio-petrelli)]

I have the same problem, but I think this is a problem with glib, not openjdk.

[Paweł Smoliński (linuxuser-czlowieksukcesu)]

Checked in other OS (Slackware) and there is working fine, so it looks it's bug in glib.

[Sebastien Bacher (seb128)]

it doesn't seem to be a glib bug or nothing indicates it in the details there at least

[apetrelli (antonio-petrelli)]

Sebastien, why not? libgobject is part of libglib package.

[apetrelli (antonio-petrelli)]

I tried Eclipse Helios with Sun's JDK (downloaded from Sun's site) and it crashes the same. I attach the crash log.

[apetrelli (antonio-petrelli)]

This is the bug at Eclipse site:
https://bugs.eclipse.org/bugs/show_bug.cgi?id=317763

[hazica (hazica)]

I was struggling with the exact same issue, on my Kubuntu 10.04 64 Bit machine. The issue was resolved by doing a simple system update. (I had not done this for quite some time: 3-4 weeks) Hope this helps

[apetrelli (antonio-petrelli)]

The update didn't work for me, thanks anyway.

[Paweł Smoliński (linuxuser-czlowieksukcesu)]

It looks that is the bug in the GTK or Eclipse SWT library.
During window close process method org.eclipse.widgets.Display.removeWidget() calls native method org.eclipse.swt.internal.gtk.OS._g_object_get_qdata() which causes segmentation fault (it not cause Java exception due we are in native code).
Display.removeWidget() source code:
Widget removeWidget (long /*int*/ handle) {
 if (handle == 0) return null;
 lastWidget = null;
 Widget widget = null;
 int index = (int)/*64*/ OS.g_object_get_qdata (handle, SWT_OBJECT_INDEX) - 1;
 if (0 <= index && index < widgetTable.length) {
  widget = widgetTable [index];
  widgetTable [index] = null;
  indexTable [index] = freeSlot;
  freeSlot = index;
  OS.g_object_set_qdata (handle, SWT_OBJECT_INDEX, 0);
 }
 return widget;
}

native method implementation:
JNIEXPORT jintLong JNICALL OS_NATIVE(_1g_1object_1get_1qdata)
 (JNIEnv *env, jclass that, jintLong arg0, jint arg1)
{
 jintLong rc = 0;
 OS_NATIVE_ENTER(env, that, _1g_1object_1get_1qdata_FUNC);
 rc = (jintLong)g_object_get_qdata((GObject *)arg0, (GQuark)arg1);
 OS_NATIVE_EXIT(env, that, _1g_1object_1get_1qdata_FUNC);
 return rc;
}

[Paweł Smoliński (linuxuser-czlowieksukcesu)]

I see here 2 places which can mess:
- g_object_set_qdata returns handle, which is then casted to int (in amd64 sizeof(int) is still 4!)
- if first arg (casted to GObect*) is greather than 2^63 we will have negative long value and it can cause segmentation fault (pointer to negative memory address) - shouldn't be unsigned long putted here?

[Paweł Smoliński (linuxuser-czlowieksukcesu)]

In Eclipse Bugzilla guys found that gtk-qt-engine is guilty here. Turning off this (switching from QtCurve to Raleigh) solves the problem. More info: https://bugs.eclipse.org/bugs/show_bug.cgi?id=317763#c14

[Matthias Klose (doko)]

this is a locally installed version of eclipse. please report the problem where you did download this binary.
please recheck if this is reproducible with the eclipse version distributed by Ubuntu

[Andreas Göb (agoeb)]

Currently there seems to be no Ubuntu package of Eclipse Helios (3.6).
Wouldn't it be better to resolve this in gtk-qt-engine rather than in the Ubuntu eclipse package? This would prevent similar problems with other GTK applications.

[Niels Thykier (niels-thykier)]

Hi gtk-qt-engine people

I would like your opinion on this; you may also want to read the bug log on the eclipse tracker[1].

~Niels

https://bugs.eclipse.org/bugs/show_bug.cgi?id=317763

[Jonathan Thomas (echidnaman)]

gtk-qt-engine is no longer in Ubuntu. (and is abandoned upstream, causing the former)

[Niels Thykier (niels-thykier)]

Alright, I am closing this as invalid then since gtk-qt-engine has been removed and the eclipse binary involved is not from Ubuntu so we cannot really do much about it.

~Niels