X2Go Bug report logs - #884
nxagent fails to run with "Could not open default font 'fixed'"

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

Reported by: devsk <internet_everyone@yahoo.com>

Date: Sun, 31 May 2015 20:40:01 UTC

Severity: normal

Tags: fixed-upstream

Found in version 3.5.0.30

Fixed in version 3.5.99.4

Done: Juri Grabowski <x2go@jugra.de>

Bug is archived. No further changes may be made.

Forwarded to https://github.com/ArcticaProject/nx-libs/issues/84

Full log

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Date: Mon, 8 Jun 2015 04:50:48 +0000 (UTC)
From: devsk <internet_everyone@yahoo.com>
Reply-To: devsk <internet_everyone@yahoo.com>
To: Mihai Moldovan <ionic@ionic.de>, "884@bugs.x2go.org" <884@bugs.x2go.org>
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References: <5572FFC7.1090908@ionic.de> <958880314.6875274.1433735733736.JavaMail.yahoo@mail.yahoo.com> <338220343.6872951.1433737689331.JavaMail.yahoo@mail.yahoo.com>
Subject: Re: [X2Go-Dev] nxagent aborts session with 'Could not	open default
 font 'fixed''
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 7bit

So, here is why SecurityLookupIDByType() fails. Basically, looks like the Hash() in NXresource.c is returning an index for "id" which is referencing 0x0.

Anybody got any clues? What does XCSECURITY have to do with default font? What kind of madness is this?

Breakpoint 1, SetDefaultFont (defaultfontname=0x703f11 "fixed") at NXdixfonts.c:221
221     NXdixfonts.c: No such file or directory.
(gdb) b Hash
Breakpoint 3 at 0x43b1a0: file NXresource.c, line 321.
(gdb) c
Continuing.

Breakpoint 3, Hash (client=client@entry=0, id=id@entry=127) at NXresource.c:321
321     NXresource.c: No such file or directory.
(gdb) bt
#0  Hash (client=client@entry=0, id=id@entry=127) at NXresource.c:321
#1  0x000000000043c3e7 in SecurityLookupIDByType (client=0x0, id=127, rtype=4, mode=0) at NXresource.c:1143
#2  0x000000000043c62e in LookupIDByType (id=<optimized out>, rtype=<optimized out>) at NXresource.c:1193
#3  0x0000000000421109 in SetDefaultFont (defaultfontname=0x703f11 "fixed") at NXdixfonts.c:231
#4  0x000000000040dd05 in main ()
(gdb) s
320     in NXresource.c
(gdb) 
336     in NXresource.c
(gdb) p res
No symbol "res" in current context.
(gdb) p id
$22 = 127
(gdb) p ((int)(0x3F&(id^(id>>6)^(id>>12))))
$24 = 62
(gdb) fini
Run till exit from #0  Hash (client=client@entry=0, id=id@entry=127) at NXresource.c:336
0x000000000043c3e7 in SecurityLookupIDByType (client=0x0, id=127, rtype=4, mode=0) at NXresource.c:1143
1143    in NXresource.c
Value returned is $25 = 62
(gdb) bt
#0  0x000000000043c3e7 in SecurityLookupIDByType (client=0x0, id=127, rtype=4, mode=0) at NXresource.c:1143
#1  0x000000000043c62e in LookupIDByType (id=<optimized out>, rtype=<optimized out>) at NXresource.c:1193
#2  0x0000000000421109 in SetDefaultFont (defaultfontname=0x703f11 "fixed") at NXdixfonts.c:231
#3  0x000000000040dd05 in main ()
(gdb) p clientTable[cid].resources[62]
$26 = (ResourcePtr) 0x0


-devsk

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