X2Go Bug report logs - #410
Segfault of _X11TransWritev in libNX_X11.so.6 with libQtGui

version graph

Package: nxagent; Maintainer for nxagent is X2Go Developers <x2go-dev@lists.x2go.org>; Source for nxagent is src:nx-libs.

Reported by: Sven Willenberger <swillenberger@upsicorp.com>

Date: Fri, 24 Jan 2014 02:50:02 UTC

Severity: normal

Merged with 113, 467

Found in version

Done: Mike Gabriel <mike.gabriel@das-netzwerkteam.de>

Bug is archived. No further changes may be made.

Full log

Message #5 received at submit@bugs.x2go.org (full text, mbox, reply):

Received: (at submit) by bugs.x2go.org; 24 Jan 2014 02:46:10 +0000
From swillenberger@upsicorp.com  Fri Jan 24 03:46:05 2014
X-Spam-Checker-Version: SpamAssassin 3.3.2 (2011-06-06) on
X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00 autolearn=ham
X-Greylist: delayed 400 seconds by postgrey-1.34 at ymir; Fri, 24 Jan 2014 03:46:04 CET
Received: from nibbler.virtdom.com (nibbler.virtdom.com [])
	by ymir (Postfix) with SMTP id A29A25DA79
	for <submit@bugs.x2go.org>; Fri, 24 Jan 2014 03:46:04 +0100 (CET)
Received: (qmail 20652 invoked from network); 24 Jan 2014 02:39:22 -0000
Received: from cpe-098-026-077-099.nc.res.rr.com (HELO dogpound) (swillenberger@upsicorp.com@
	by nibbler.virtdom.com with (AES128-SHA encrypted) SMTP
	(baa3d706-84a0-11e3-9e66-0030482eac7c); Thu, 23 Jan 2014 21:39:22 -0500
Date: Thu, 23 Jan 2014 21:39:19 -0500
From: Sven Willenberger <swillenberger@upsicorp.com>
To: submit@bugs.x2go.org
Subject: Segfault of _X11TransWritev in libNX_X11.so.6 with libQtGui
Message-ID: <20140123213919.0cba2367@dogpound>
Organization: United Pay Systems
X-Mailer: Claws Mail 3.9.3 (GTK+ 2.24.22; x86_64-unknown-linux-gnu)
MIME-Version: 1.0
Content-Type: text/plain; charset=US-ASCII
Content-Transfer-Encoding: 7bit
X-MagicMail-UUID: baa3d706-84a0-11e3-9e66-0030482eac7c
X-MagicMail-Authenticated: swillenberger@upsicorp.com
Package: nx-libs (nx-x11)

Server (host)OS: Linux 3.12.8 (ArchLinux) x86_64
Client OS: Windows 8 (version QT 4.8.5)

When using python apps with QT (either PyQT or PySide), any interaction
with the resulting window (when connected from windows to linux) causes
the program to crash. Partial stack trace:

#0  0x00007fffed78acb0 in _X11TransWritev () from /usr/lib/nx/X11/libNX_X11.so.6
#1  0x00007fffed76eb8e in _XSend () from /usr/lib/nx/X11/libNX_X11.so.6
#2  0x00007fffed763e69 in XQueryExtension () from /usr/lib/nx/X11/libNX_X11.so.6
#3  0x00007fffed759af2 in XInitExtension () from /usr/lib/nx/X11/libNX_X11.so.6
#4  0x00007fffeda3d7bb in XextAddDisplay () from /usr/lib/nx/X11/libNX_Xext.so.6
#5  0x00007fffedc4cee1 in XPanoramiXQueryExtension () from /usr/lib/nx/X11/Xinerama/libXinerama.so.1
#6  0x00007ffff0e01e3e in ?? () from /usr/lib/python3.3/site-packages/PySide-1.2.1-py3.3.egg/PySide/libQtGui.so.4
#7  0x00007ffff0e01f42 in QDesktopWidget::QDesktopWidget() () from /usr/lib/python3.3/site-packages/PySide-1.2.1-py3.3.egg/PySide/libQtGui.so.4

This just happened with the Jan 4 update to nx-libs (et al).

For comparison, using a basic ssh connection with X-forwarding and
starting an xterm session and running the same python programs succeeds.

Sven Willenberger
United Pay Systems International

Send a report that this bug log contains spam.

X2Go Developers <owner@bugs.x2go.org>. Last modified: Fri Aug 7 00:48:52 2020; Machine Name: ymir.das-netzwerkteam.de

X2Go Bug tracking system

Debbugs is free software and licensed under the terms of the GNU Public License version 2. The current version can be obtained from https://bugs.debian.org/debbugs-source/.

Copyright © 1999 Darren O. Benham, 1997,2003 nCipher Corporation Ltd, 1994-97 Ian Jackson, 2005-2017 Don Armstrong, and many other contributors.