X2Go Bug report logs - #516
X2go successfully connects to server, but no window is shown

version graph

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

Reported by: sebastien chabrolles <s.chabrolles@fr.ibm.com>

Date: Sat, 14 Jun 2014 20:25:03 UTC

Severity: normal

Tags: pending

Found in version 3.5.0.24

Fixed in version 3.5.0.25

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

Bug is archived. No further changes may be made.

Full log

Message #107 received at 516@bugs.x2go.org (full text, mbox, reply):

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Date: Sat, 21 Jun 2014 21:41:45 +0000
Message-ID: <20140621214145.Horde.cygUV6BzElPexam_6FAkzQ2@mail.das-netzwerkteam.de>
From: Mike Gabriel <mike.gabriel@das-netzwerkteam.de>
To: Mihai Moldovan <ionic@ionic.de>
Cc: 516@bugs.x2go.org
Subject: Re: [X2Go-Dev] Bug#516: [PATCH 1/5 v2] Create Windows and fix
 drawing issues on Big Endian 64bit systems
References: <OF70D11DD0.EF25FFDA-ONC1257CF7.006F3027-C1257CF7.006FFC35@fr.ibm.com>
 <53A4F5FE.4000206@ionic.de> <53A4F8DF.30404@ionic.de>
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[Message part 1 (text/plain, inline)]
Hi Mihai,

On  Sa 21 Jun 2014 23:35:26 CEST, Mihai Moldovan wrote:

> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA512
>
> * On 21.06.2014 11:23 pm, Mike Gabriel wrote:
>> Hi Mihai,
>>
>> On  Sa 21 Jun 2014 23:12:59 CEST, Mihai Moldovan wrote:
>>
>>> Multiple endiannes issues were setting incorrect event masks when  
>>> creating and
>>> drawing X11 windows.
>>>
>>> This time, a smaller integer has been casted to a bigger one and  
>>> passed to some
>>> function actually setting its value.
>>>
>>> This meant, that garbage from stack was attached to the smaller  
>>> integer value,
>>> putting unknown memory into the lower bytes of the bigger integer.
>>>
>>> Fix this by creating a big, initialized temporary variable, let  
>>> the function do
>>> its magic on that one and pass the value back to the smaller  
>>> variable -- and
>>> cross your fingers the smaller variable can hold it without  
>>> overrunning. (The
>>> last bit is a design issue we can't really fix and has been around  
>>> even before
>>> this patch.)
>>>
>>>
>>> This fixes window creation and redrawing/updating issues on Big  
>>> Endian 64bit
>>> systems.
>>
>> Fixed patch included. However, unfortunately I forgot to rebase  
>> before pushing...
>
> Thanks, Mike!
>
> Unfortunately the "057_nx-X11-bigendian-ppc64-no-session-window.full.patch"
> description is still the "old" one. Mind updating that?

Done.

Mike
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