X2Go Bug report logs - #1172
ThunderBird crashes in PubApp mode on amd64

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X-Loop: owner@bugs.x2go.org
Subject: Bug#1172: [X2Go-Dev] Bug#1172: ThunderBird crashes in PubApp mode on amd64
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References: <d374b2a9-a785-1d79-76a1-54d403740a28@baur-itcs.de>
 <CANVnVYK+x+OCswoA6mx7jDov4W+cWns8Z1XGvkM3KWtTafAkAQ@mail.gmail.com>
Cc: submit@bugs.x2go.org, Mihai Moldovan <ionic@ionic.de>,
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From: Stefan Baur <X2Go-ML-1@baur-itcs.de>
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Date: Mon, 8 May 2017 01:53:36 +0200
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[Message part 1 (text/plain, inline)]

Am 08.05.2017 um 00:07 schrieb Ulrich Sibiller:

[...]

> The error message you posted is this:
> traps: x2goagent [3339] general protection ip:7f02464e2e6d
> sp:7ffef6c22150error:0 in libNX_X11.so.6.2[7f0246496000+123000]
> 
> So we have a problem in libNX_X11 which - in 3.5.9.77 - is on the
> current xorg upstream level 1.6.5. In nx-libs 3.5.0.32 it is rather
> old (about 1.3.3). I am curious if it is sufficient to ONLY copy
> libNX_X11.so* from 3.5.99.7 to your crashing installation. If that
> helps we could release 3.5.0.33 or 34 with that libX11 exchanged. This
> should generally be bit much less risky than just marking 3.5.99 as
> stable.

Copying the single file over actually works.  Though I don't know what
other side effects it may have ...


[...]

> You could try to install libNX_X11-dbg and attach gdb to x2goagent
> (run "gdb -p $(pidof x2goagent)") just before starting thunderbird.
> When it crashes you'll get a backtrace. Using that information we can
> (hopefully) see if a quick backport could help. That would be the
> least invasive solution.

I hope I did this right ... the package name was libnx-x11-6-dbg.

GNU gdb (Debian 7.7.1+dfsg-5) 7.7.1
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Attaching to process 6297
Reading symbols from /usr/lib/nx/bin/nxagent...(no debugging symbols
found)...done.
Reading symbols from /usr/lib/x86_64-linux-gnu/libNX_Xext.so.6...Reading
symbols from
/usr/lib/debug//usr/lib/x86_64-linux-gnu/libNX_Xext.so.6.4...done.
done.
Loaded symbols for /usr/lib/x86_64-linux-gnu/libNX_Xext.so.6
Reading symbols from /usr/lib/x86_64-linux-gnu/libNX_X11.so.6...Reading
symbols from
/usr/lib/debug//usr/lib/x86_64-linux-gnu/libNX_X11.so.6.2...done.
done.
Loaded symbols for /usr/lib/x86_64-linux-gnu/libNX_X11.so.6
Reading symbols from /lib/x86_64-linux-gnu/libz.so.1...(no debugging
symbols found)...done.
Loaded symbols for /lib/x86_64-linux-gnu/libz.so.1
Reading symbols from /lib/x86_64-linux-gnu/libm.so.6...Reading symbols
from /usr/lib/debug//lib/x86_64-linux-gnu/libm-2.19.so...done.
done.
Loaded symbols for /lib/x86_64-linux-gnu/libm.so.6
Reading symbols from /usr/lib/x86_64-linux-gnu/libNX_Xpm.so.4...Reading
symbols from
/usr/lib/debug//usr/lib/x86_64-linux-gnu/libNX_Xpm.so.4.11...done.
done.
Loaded symbols for /usr/lib/x86_64-linux-gnu/libNX_Xpm.so.4
Reading symbols from /usr/lib/x86_64-linux-gnu/libXcomp.so.3...(no
debugging symbols found)...done.
Loaded symbols for /usr/lib/x86_64-linux-gnu/libXcomp.so.3
Reading symbols from /usr/lib/x86_64-linux-gnu/libXcompext.so.3...(no
debugging symbols found)...done.
Loaded symbols for /usr/lib/x86_64-linux-gnu/libXcompext.so.3
Reading symbols from /usr/lib/x86_64-linux-gnu/libXcompshad.so.3...(no
debugging symbols found)...done.
Loaded symbols for /usr/lib/x86_64-linux-gnu/libXcompshad.so.3
Reading symbols from
/usr/lib/x86_64-linux-gnu/libNX_Xrender.so.1...Reading symbols from
/usr/lib/debug//usr/lib/x86_64-linux-gnu/libNX_Xrender.so.1.2.2...done.
done.
Loaded symbols for /usr/lib/x86_64-linux-gnu/libNX_Xrender.so.1
Reading symbols from
/usr/lib/x86_64-linux-gnu/libNX_Xfixes.so.3...Reading symbols from
/usr/lib/debug//usr/lib/x86_64-linux-gnu/libNX_Xfixes.so.3.0...done.
done.
Loaded symbols for /usr/lib/x86_64-linux-gnu/libNX_Xfixes.so.3
Reading symbols from /usr/lib/x86_64-linux-gnu/libNX_Xtst.so.6...Reading
symbols from
/usr/lib/debug//usr/lib/x86_64-linux-gnu/libNX_Xtst.so.6.1...done.
done.
Loaded symbols for /usr/lib/x86_64-linux-gnu/libNX_Xtst.so.6
Reading symbols from
/usr/lib/x86_64-linux-gnu/libNX_Xdamage.so.1...Reading symbols from
/usr/lib/debug//usr/lib/x86_64-linux-gnu/libNX_Xdamage.so.1.0...done.
done.
Loaded symbols for /usr/lib/x86_64-linux-gnu/libNX_Xdamage.so.1
Reading symbols from
/usr/lib/x86_64-linux-gnu/libNX_Xrandr.so.2...Reading symbols from
/usr/lib/debug//usr/lib/x86_64-linux-gnu/libNX_Xrandr.so.2.0...done.
done.
Loaded symbols for /usr/lib/x86_64-linux-gnu/libNX_Xrandr.so.2
Reading symbols from
/usr/lib/x86_64-linux-gnu/libNX_Xcomposite.so.1...Reading symbols from
/usr/lib/debug//usr/lib/x86_64-linux-gnu/libNX_Xcomposite.so.1.0...done.
done.
Loaded symbols for /usr/lib/x86_64-linux-gnu/libNX_Xcomposite.so.1
Reading symbols from
/usr/lib/x86_64-linux-gnu/libNX_Xinerama.so.1...Reading symbols from
/usr/lib/debug//usr/lib/x86_64-linux-gnu/libNX_Xinerama.so.1.0...done.
done.
Loaded symbols for /usr/lib/x86_64-linux-gnu/libNX_Xinerama.so.1
Reading symbols from
/usr/lib/x86_64-linux-gnu/libNX_Xdmcp.so.6...Reading symbols from
/usr/lib/debug//usr/lib/x86_64-linux-gnu/libNX_Xdmcp.so.6.0...done.
done.
Loaded symbols for /usr/lib/x86_64-linux-gnu/libNX_Xdmcp.so.6
Reading symbols from /usr/lib/x86_64-linux-gnu/libxml2.so.2...(no
debugging symbols found)...done.
Loaded symbols for /usr/lib/x86_64-linux-gnu/libxml2.so.2
Reading symbols from /lib/x86_64-linux-gnu/libc.so.6...Reading symbols
from /usr/lib/debug//lib/x86_64-linux-gnu/libc-2.19.so...done.
done.
Loaded symbols for /lib/x86_64-linux-gnu/libc.so.6
Reading symbols from /lib/x86_64-linux-gnu/libdl.so.2...Reading symbols
from /usr/lib/debug//lib/x86_64-linux-gnu/libdl-2.19.so...done.
done.
Loaded symbols for /lib/x86_64-linux-gnu/libdl.so.2
Reading symbols from /lib/x86_64-linux-gnu/libpng12.so.0...(no debugging
symbols found)...done.
Loaded symbols for /lib/x86_64-linux-gnu/libpng12.so.0
Reading symbols from /usr/lib/x86_64-linux-gnu/libjpeg.so.62...(no
debugging symbols found)...done.
Loaded symbols for /usr/lib/x86_64-linux-gnu/libjpeg.so.62
Reading symbols from /usr/lib/x86_64-linux-gnu/libstdc++.so.6...(no
debugging symbols found)...done.
Loaded symbols for /usr/lib/x86_64-linux-gnu/libstdc++.so.6
Reading symbols from /lib/x86_64-linux-gnu/libgcc_s.so.1...(no debugging
symbols found)...done.
Loaded symbols for /lib/x86_64-linux-gnu/libgcc_s.so.1
Reading symbols from /lib/x86_64-linux-gnu/liblzma.so.5...(no debugging
symbols found)...done.
Loaded symbols for /lib/x86_64-linux-gnu/liblzma.so.5
Reading symbols from /lib64/ld-linux-x86-64.so.2...Reading symbols from
/usr/lib/debug//lib/x86_64-linux-gnu/ld-2.19.so...done.
done.
Loaded symbols for /lib64/ld-linux-x86-64.so.2
Reading symbols from /lib/x86_64-linux-gnu/libnss_files.so.2...Reading
symbols from
/usr/lib/debug//lib/x86_64-linux-gnu/libnss_files-2.19.so...done.
done.
Loaded symbols for /lib/x86_64-linux-gnu/libnss_files.so.2
0x00007f664a88b873 in __select_nocancel () at
../sysdeps/unix/syscall-template.S:81
81      ../sysdeps/unix/syscall-template.S: No such file or directory.
(gdb) s
0x00007f664c34d969 in NXTransSelect () from
/usr/lib/x86_64-linux-gnu/libXcomp.so.3
(gdb) s
Single stepping until exit from function NXTransSelect,
which has no line number information.
_XSelect (maxfds=<optimized out>, readfds=0xbbc880,
writefds=0x7ffc44d17650, exceptfds=<optimized out>,
timeout=0x7ffc44d17790) at XlibInt.c:335
335     XlibInt.c: No such file or directory.
(gdb) s
337     in XlibInt.c
(gdb) s
__GI___errno_location () at errno-loc.c:26
26      errno-loc.c: No such file or directory.
(gdb) s
27      in errno-loc.c
(gdb) s
_XSelect (maxfds=<optimized out>, readfds=0xbbc880,
writefds=0x7ffc44d17650, exceptfds=<optimized out>,
timeout=0x7ffc44d17790) at XlibInt.c:339
339     XlibInt.c: No such file or directory.
(gdb) s
350     in XlibInt.c
(gdb) s

Program received signal SIGSEGV, Segmentation fault.
_XData32 (dpy=dpy@entry=0x2539060, data=<optimized out>,
data@entry=0x7f66477bcff4, len=101652, len@entry=109812) at XlibInt.c:3792
3792    in XlibInt.c
(gdb) s

Program terminated with signal SIGSEGV, Segmentation fault.
The program no longer exists.
(gdb) quit

-Stefan

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