X2Go Bug report logs - #480
Segmentation Fault (core dump)

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Package: x2goclient; Maintainer for x2goclient is X2Go Developers <x2go-dev@lists.x2go.org>; Source for x2goclient is src:x2goclient.

Reported by: Josh Reeves <aenima99x@gmail.com>

Date: Fri, 18 Apr 2014 18:20:01 UTC

Severity: normal

Found in version 4.0.2.1

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Report forwarded to x2go-dev@lists.berlios.de, X2Go Developers <x2go-dev@lists.berlios.de>:
Bug#480; Package x2goclient. (Fri, 18 Apr 2014 18:20:01 GMT) Full text and rfc822 format available.

Acknowledgement sent to Josh Reeves <aenima99x@gmail.com>:
New Bug report received and forwarded. Copy sent to X2Go Developers <x2go-dev@lists.berlios.de>. (Fri, 18 Apr 2014 18:20:01 GMT) Full text and rfc822 format available.

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

From: Josh Reeves <aenima99x@gmail.com>
To: submit@bugs.x2go.org
Subject: Segmentation Fault (core dump)
Date: Fri, 18 Apr 2014 11:18:33 -0700
[Message part 1 (text/plain, inline)]
Package: x2goclient
Version: 4.0.2.1

x2goclient --version
x2go-INFO-1> "Starting x2goclient..."
x2go-WARNING-1> "Can't load translator: :/x2goclient_en_us"
x2go-WARNING-2> "Can't load translator: :/qt_en_US"

4.0.2.1
x2go-INFO-6> "Closing x2goclient..."
Segmentation fault (core dumped)
x2goclient[12243]: segfault at 5000000057 ip 00007f06214e3b68 sp
00007fff7cfaff30 error 4 in libQtGui.so.4.8.6[7f0620cf6000+a66000]
x2goclient[19850]: segfault at 30 ip 00007f080eabfcdf sp
00007fffd71e5b20 error 6 in libQtCore.so.4.8.6[7f080e9fc000+2d8000]

Ubuntu 14.04
Linux 3.13.0-24-generic #46-Ubuntu SMP Thu Apr 10 19:11:08 UTC 2014
x86_64 x86_64 x86_64 GNU/Linux

Client GUI opens and shows login prompt for ssh key, then immediately
crashes after trying
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Information forwarded to x2go-dev@lists.x2go.org, X2Go Developers <x2go-dev@lists.x2go.org>:
Bug#480; Package x2goclient. (Fri, 23 May 2014 06:55:01 GMT) Full text and rfc822 format available.

Acknowledgement sent to Oded Arbel <oded@geek.co.il>:
Extra info received and forwarded to list. Copy sent to X2Go Developers <x2go-dev@lists.x2go.org>. (Fri, 23 May 2014 06:55:01 GMT) Full text and rfc822 format available.

Message #10 received at 480@bugs.x2go.org (full text, mbox):

From: Oded Arbel <oded@geek.co.il>
To: 480@bugs.x2go.org
Subject: I also have a segfault which looks like the same problem.
Date: Fri, 23 May 2014 06:33:16 +0003
[Message part 1 (text/plain, inline)]
Running x2goclient with a session from the command line, the x2goclient 
window appears and I get a notice about a new SSH key, and as soon as I 
approve it the client crashes. In the console I get this output:

$ x2goclient --debug --session='ogiery remote'
x2go-INFO-1> "Starting x2goclient..."
x2go-WARNING-1> "Can't load translator: :/x2goclient_he_il"
x2go-WARNING-2> "Can't load translator: :/qt_he_IL"
x2go-INFO-3> "Started x2goclient."
x2go-DEBUG-../onmainwindow.cpp:479> "$HOME=/home/odeda"
x2go-DEBUG-../onmainwindow.cpp:2192> Reading 2 sessions from config 
file.
x2go-DEBUG-../onmainwindow.cpp:2796> Starting session via smartcard, 
ssh-agent or kerberos token.
x2go-INFO-8> "Starting connection to server: proxy.ip.address:22"
x2go-DEBUG-../onmainwindow.cpp:2830> Start new ssh connection to 
server:"proxy.ip.address":"22" krbLogin: false

The session I was using is like this:
[20140523075017522]
speed=2
pack=16m-jpeg
quality=9
fstunnel=true
export=
iconvto=UTF-8
iconvfrom=ISO8859-1
useiconv=false
fullscreen=true
multidisp=false
display=1
maxdim=false
rdpclient=rdesktop
directrdpsettings=
width=800
height=600
dpi=96
setdpi=true
xinerama=false
usekbd=true
type=auto
sound=true
soundsystem=pulse
startsoundsystem=true
soundtunnel=true
defsndport=true
sndport=4713
print=true
name=ogiery remote
icon=:icons/128x128/x2gosession.png
host=remote.ip.address
user=odeda
key=
rdpport=3389
sshport=22
autologin=true
krblogin=false
krbdelegation=false
directrdp=false
rootless=false
published=false
applications=WWWBROWSER, MAILCLIENT, OFFICE, TERMINAL
command=KDE
rdpoptions=
rdpserver=
xdmcpserver=localhost
usesshproxy=true
sshproxytype=SSH
sshproxyuser=odeda
sshproxykeyfile=
sshproxyhost=proxy.ip.adress
sshproxyport=15022
sshproxysamepass=false
sshproxysameuser=false
sshproxyautologin=true
sshproxykrblogin=false

i've installed x2goclient-dbg, but the backtrace on the core file is 
still useless.
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Information forwarded to x2go-dev@lists.x2go.org, X2Go Developers <x2go-dev@lists.x2go.org>:
Bug#480; Package x2goclient. (Wed, 17 Dec 2014 18:00:01 GMT) Full text and rfc822 format available.

Acknowledgement sent to Marc Siramy <marc.siramy@gmail.com>:
Extra info received and forwarded to list. Copy sent to X2Go Developers <x2go-dev@lists.x2go.org>. (Wed, 17 Dec 2014 18:00:02 GMT) Full text and rfc822 format available.

Message #15 received at 480@bugs.x2go.org (full text, mbox):

From: Marc Siramy <marc.siramy@gmail.com>
To: 480@bugs.x2go.org
Subject: Segmentation fault while running x2goclient v
Date: Wed, 17 Dec 2014 18:58:34 +0100
[Message part 1 (text/plain, inline)]
I have a very similar bug with
X2Go Client V. 4.0.3.1 (Qt - 4.8.1).

x2go-INFO-1> "Starting x2goclient..."
x2go-INFO-4> "Translator: :/x2goclient_fr_fr installed."
x2go-INFO-5> "Translator: :/qt_fr_FR installed."
x2go-INFO-3> "Started  x2goclient."
[Thread 0xb26ffb40 (LWP 25778) exited]
x2go-INFO-8> "Starting connection to server: 192.168.1.11:22"
[New Thread 0xb26ffb40 (LWP 28264)]

Program received signal SIGSEGV, Segmentation fault.
0xb6ee2814 in QString::operator=(QString const&) () from
/usr/lib/i386-linux-gnu/libQtCore.so.4

(gdb) quit


Here is the stack with libqt4-dbg, 4:4.8.5 version :
(gdb) start
Function "main" not defined.
Make breakpoint pending on future shared library load? (y or [n])
Starting program: /usr/bin/x2goclient
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/i386-linux-gnu/libthread_db.so.1".
x2go-INFO-1> "Starting x2goclient..."
x2go-INFO-4> "Translator: :/x2goclient_fr_fr installed."
x2go-INFO-5> "Translator: :/qt_fr_FR installed."
x2go-INFO-3> "Started  x2goclient."
x2go-INFO-8> "Starting connection to server: 192.168.1.11:22"
[New Thread 0xb2e62b40 (LWP 31128)]

Program received signal SIGSEGV, Segmentation fault.
QString::operator= (this=0xbffff024, other=...) at tools/qstring.cpp:1410
1410    tools/qstring.cpp: Aucun fichier ou dossier de ce type.

(gdb) bt
#0  QString::operator= (this=0xbffff024, other=...) at
tools/qstring.cpp:1410
#1  0x080a7cdc in ?? ()
#2  0x080a89b6 in ?? ()
#3  0x0814420e in ?? ()
#4  0xb6fc80f7 in QMetaObject::activate (sender=0x8537c08, m=0x8155698,
local_signal_index=0,
    argv=0xbffff4d0) at kernel/qobject.cpp:3539
#5  0x08145a1f in ?? ()
#6  0x08105b81 in ?? ()
#7  0x08145c68 in ?? ()
#8  0xb6fc48aa in QMetaCallEvent::placeMetaCall (this=0xb3311408,
object=0x8537c08) at kernel/qobject.cpp:524
#9  0xb6fcc6fb in QObject::event (this=0x8537c08, e=0xb3311408) at
kernel/qobject.cpp:1194
#10 0xb73a37f4 in QApplicationPrivate::notify_helper (this=0x8288f38,
receiver=0x8537c08, e=0xb3311408)
    at kernel/qapplication.cpp:4567
#11 0xb73aa2d3 in QApplication::notify (this=0xbffffb58,
receiver=0x8537c08, e=0xb3311408)
    at kernel/qapplication.cpp:4353
#12 0xb6fb2e4a in QCoreApplication::notifyInternal (this=0xbffffb58,
receiver=receiver@entry=0x8537c08,
    event=event@entry=0xb3311408) at kernel/qcoreapplication.cpp:953
#13 0xb6fb670d in sendEvent (event=0xb3311408, receiver=0x8537c08)
    at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#14 QCoreApplicationPrivate::sendPostedEvents (receiver=receiver@entry=0x0,
event_type=event_type@entry=0,
    data=0x8289048) at kernel/qcoreapplication.cpp:1577
#15 0xb6fb6c1c in QCoreApplication::sendPostedEvents
(receiver=receiver@entry=0x0,
    event_type=event_type@entry=0) at kernel/qcoreapplication.cpp:1470
#16 0xb6fe323e in sendPostedEvents () at
../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:236
#17 postEventSourceDispatch (s=0x8289da0) at
kernel/qeventdispatcher_glib.cpp:287
#18 0xb65df1e3 in g_main_context_dispatch () from
/lib/i386-linux-gnu/libglib-2.0.so.0
#19 0xb65df468 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#20 0xb65df528 in g_main_context_iteration () from
/lib/i386-linux-gnu/libglib-2.0.so.0
#21 0xb6fe293b in QEventDispatcherGlib::processEvents
(this=this@entry=0x8289b68,
flags=...)
    at kernel/qeventdispatcher_glib.cpp:434
#22 0xb74585de in QGuiEventDispatcherGlib::processEvents (this=0x8289b68,
flags=...)
    at kernel/qguieventdispatcher_glib.cpp:204
#23 0xb6fb1823 in QEventLoop::processEvents (this=this@entry=0xbffffad8,
flags=...)
    at kernel/qeventloop.cpp:149
#24 0xb6fb1b49 in QEventLoop::exec (this=this@entry=0xbffffad8, flags=...)
at kernel/qeventloop.cpp:204
---Type <return> to continue, or q <return> to quit---
#25 0xb6fb78fe in QCoreApplication::exec () at
kernel/qcoreapplication.cpp:1225
#26 0xb73a1a24 in QApplication::exec () at kernel/qapplication.cpp:3828
#27 0x0812a533 in ?? ()
#28 0x0805bd3b in ?? ()
#29 0xb6b81a83 in __libc_start_main (main=0x805bd20, argc=1,
argv=0xbffffc94, init=0x8148de0,
    fini=0x8148e50, rtld_fini=0xb7fed180 <_dl_fini>, stack_end=0xbffffc8c)
at libc-start.c:287
#30 0x0805bdc1 in ?? ()

I'm not a C/C++ developer so this is difficult to me to investigate that.


--
Marc
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