X2Go Bug report logs - #1598
SIGSEGV x2goagent when server session starts

Package: x2goagent; Maintainer for x2goagent is X2Go Developers <x2go-dev@lists.x2go.org>; Source for x2goagent is src:nx-libs.

Reported by: marco.benuzzi@inforge.it

Date: Wed, 8 Mar 2023 18:15:02 UTC

Severity: normal

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Subject: Bug#1598: SIGSEGV x2goagent when server session starts
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Date: Wed, 08 Mar 2023 19:12:47 +0100
From: marco.benuzzi@inforge.it
To: submit@bugs.x2go.org
Message-ID: <d3a58e9f8325ff7fb91ed193dfbe8573@inforge.it>
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Package: x2goagent
Version: x2goagent-4.1.0.3-19.fc37.x86_64

When I start the connection with x2go client the session starts, but 
immediately is closed.

On server log there is SIGSEGV reported for x2goagent

Mar  8 19:03:21 nuc 
/usr/share/x2go/x2gofeature.d/x2goserver-fmbindings.features[8072]: 
x2goserver-fmbindings.features called with options: 
X2GOAGENT_RANDRXINERAMA
Mar  8 19:03:21 nuc 
/usr/share/x2go/x2gofeature.d/x2goserver-printing.features[8078]: 
x2goserver-printing.features called with options: 
X2GOAGENT_RANDRXINERAMA
Mar  8 19:03:21 nuc 
/usr/share/x2go/x2gofeature.d/x2goserver-x2goagent.features[8084]: 
x2goserver-x2goagent.features called with options: 
X2GOAGENT_RANDRXINERAMA
Mar  8 19:03:21 nuc /usr/bin/x2gofeature[8098]: x2gofeature called with 
options: X2GO_RUN_EXTENSIONS
Mar  8 19:03:21 nuc 
/usr/share/x2go/x2gofeature.d/x2goserver-desktopsharing.features[8103]: 
x2goserver-desktopsharing.features called with options: 
X2GO_RUN_EXTENSIONS
Mar  8 19:03:21 nuc 
/usr/share/x2go/x2gofeature.d/x2goserver-extensions.features[8108]: 
x2goserver-extensions.features called with options: X2GO_RUN_EXTENSIONS
Mar  8 19:03:21 nuc /usr/bin/x2goserver-run-extensions[8113]: 
x2goserver-run-extensions called with options: 
marco-50-1678298596_stDstartplasma-x11_dp24 pre-runcommand
Mar  8 19:03:21 nuc /usr/bin/x2gosetkeyboard[8127]: x2gosetkeyboard 
called with options:
Mar  8 19:03:21 nuc /usr/bin/x2gofeature[8130]: x2gofeature called with 
options: X2GO_XSESSION
Mar  8 19:03:21 nuc /usr/bin/x2gosetkeyboard[8131]: Waiting for 
/home/marco/.x2go/C-marco-50-1678298596_stDstartplasma-x11_dp24/keyboard 
to appear
Mar  8 19:03:21 nuc 
/usr/share/x2go/x2gofeature.d/x2goserver-desktopsharing.features[8136]: 
x2goserver-desktopsharing.features called with options: X2GO_XSESSION
Mar  8 19:03:21 nuc 
/usr/share/x2go/x2gofeature.d/x2goserver-extensions.features[8142]: 
x2goserver-extensions.features called with options: X2GO_XSESSION
Mar  8 19:03:21 nuc 
/usr/share/x2go/x2gofeature.d/x2goserver.features[8147]: 
x2goserver.features called with options: X2GO_XSESSION
Mar  8 19:03:21 nuc 
/usr/share/x2go/x2gofeature.d/x2goserver-fmbindings.features[8152]: 
x2goserver-fmbindings.features called with options: X2GO_XSESSION
Mar  8 19:03:21 nuc 
/usr/share/x2go/x2gofeature.d/x2goserver-printing.features[8157]: 
x2goserver-printing.features called with options: X2GO_XSESSION
Mar  8 19:03:21 nuc 
/usr/share/x2go/x2gofeature.d/x2goserver-x2goagent.features[8163]: 
x2goserver-x2goagent.features called with options: X2GO_XSESSION
Mar  8 19:03:21 nuc 
/usr/share/x2go/x2gofeature.d/x2goserver-xsession.features[8168]: 
x2goserver-xsession.features called with options: X2GO_XSESSION
Mar  8 19:03:21 nuc /usr/bin/x2goruncommand[8171]: launching session 
with Xsession-x2go mechanism, using STARTUP="/usr/bin/startplasma-x11"
Mar  8 19:03:21 nuc /usr/bin/x2goruncommand[8172]: dbus wrapper 
available as /usr/bin/dbus-run-session
Mar  8 19:03:21 nuc audit[7746]: ANOM_ABEND auid=1000 uid=1000 gid=1000 
ses=15 subj=unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023 
pid=7746 comm="x2goagent" exe="/usr/bin/nxagent" sig=11 res=1
Mar  8 19:03:21 nuc kernel: x2goagent[7746]: segfault at 39 ip 
0000558395901215 sp 00007ffdfe7864b0 error 4 in 
nxagent[55839584f000+312000] likely on CPU 6 (core 2, socket 0)
Mar  8 19:03:21 nuc kernel: Code: d0 49 8b 85 70 01 00 00 49 89 46 10 48 
8d 05 a2 ff ff ff 49 89 85 70 01 00 00 5b 5d 41 5c 41 5d 41 5e c3 66 90 
e8 bb bf ff ff <48> 83 38 00 74 bc b9 ff ff ff ff 31 d2 4c 89 e6 48 89 
df e8 13 c0

A core dump is created, below the gdb output for it.

[root@nuc ~]# coredumpctl -1 debug
           PID: 5414 (x2goagent)
           UID: 1000 (marco)
           GID: 1000 (marco)
        Signal: 11 (SEGV)
     Timestamp: Wed 2023-03-08 18:55:47 CET (21s ago)
  Command Line: x2goagent -nolisten tcp -nolisten tcp -D -auth 
/home/marco/.Xauthority -geometry 0x0 -name 
X2GO-marco-50-1678298141_stDstartplasma-x11_dp24 :50
    Executable: /usr/bin/nxagent
 Control Group: /user.slice/user-1000.slice/session-13.scope
          Unit: session-13.scope
         Slice: user-1000.slice
       Session: 13
     Owner UID: 1000 (marco)
       Boot ID: 0b72d933be694ce8ac199b390b638cff
    Machine ID: 7af5fe9c042e44bcb86628edd3b31948
      Hostname: nuc.inforge.lan
       Storage: 
/var/lib/systemd/coredump/core.x2goagent.1000.0b72d933be694ce8ac199b390b638cff.5414.1678298147000000.zst 
(present)
     Disk Size: 628.0K
       Package: nx-libs/3.5.99.26-5.fc37
      build-id: c64f96358a4519575fc02740674b41e64cd211b7
       Message: Process 5414 (x2goagent) of user 1000 dumped core.

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                	"version" : "3.5.15-2.fc37",
                	"architecture" : "x86_64",
                	"osCpe" : "cpe:/o:fedoraproject:fedora:37"
                }

                Module libm.so.6 with build-id 
9ca49f056adbf7edc2bda92b95a74d491abe03f2
                Module libz.so.1 with build-id 
d94299d7572e23295ceaf7674110eb6f2689cd91
                Metadata for module libz.so.1 owned by FDO found: {
                	"type" : "rpm",
                	"name" : "zlib",
                	"version" : "1.2.12-5.fc37",
                	"architecture" : "x86_64",
                	"osCpe" : "cpe:/o:fedoraproject:fedora:37"
                }

                Module libXext.so.6 with build-id 
bbd3e1bf1176622cf13f5d993e1bc8741c6652a8
                Metadata for module libXext.so.6 owned by FDO found: {
                	"type" : "rpm",
                	"name" : "libXext",
                	"version" : "1.3.4-9.fc37",
                	"architecture" : "x86_64",
                	"osCpe" : "cpe:/o:fedoraproject:fedora:37"
                }

                Module libXdmcp.so.6 with build-id 
368d692b4288e7c5f4dc41687b0db55394c9d413
                Metadata for module libXdmcp.so.6 owned by FDO found: {
                	"type" : "rpm",
                	"name" : "libXdmcp",
                	"version" : "1.1.3-9.fc37",
                	"architecture" : "x86_64",
                	"osCpe" : "cpe:/o:fedoraproject:fedora:37"
                }

                Module libXinerama.so.1 with build-id 
22c3210b00c5179278a990a0e8f6bcfe5643693f
                Metadata for module libXinerama.so.1 owned by FDO found: 
{
                	"type" : "rpm",
                	"name" : "libXinerama",
                	"version" : "1.1.4-11.fc37",
                	"architecture" : "x86_64",
                	"osCpe" : "cpe:/o:fedoraproject:fedora:37"
                }

                Module libXcomposite.so.1 with build-id 
4b325f60f40bc223670a967bf194d506cde23377
                Metadata for module libXcomposite.so.1 owned by FDO 
found: {
                	"type" : "rpm",
                	"name" : "libXcomposite",
                	"version" : "0.4.5-8.fc37",
                	"architecture" : "x86_64",
                	"osCpe" : "cpe:/o:fedoraproject:fedora:37"
                }

                Module libXfont2.so.2 with build-id 
f5860fbdffd7a7228e8ea63bcae1e29d3aae44ec
                Metadata for module libXfont2.so.2 owned by FDO found: {
                	"type" : "rpm",
                	"name" : "libXfont2",
                	"version" : "2.0.3-13.fc37",
                	"architecture" : "x86_64",
                	"osCpe" : "cpe:/o:fedoraproject:fedora:37"
                }

                Module libXfixes.so.3 with build-id 
8f3a78f737b814c0008f3cf57ef6d11cc646a7ef
                Metadata for module libXfixes.so.3 owned by FDO found: {
                	"type" : "rpm",
                	"name" : "libXfixes",
                	"version" : "6.0.0-4.fc37",
                	"architecture" : "x86_64",
                	"osCpe" : "cpe:/o:fedoraproject:fedora:37"
                }

                Module libXrender.so.1 with build-id 
e28b0d1a111084521bef458753ba20e0e28aa299
                Metadata for module libXrender.so.1 owned by FDO found: 
{
                	"type" : "rpm",
                	"name" : "libXrender",
                	"version" : "0.9.10-17.fc37",
                	"architecture" : "x86_64",
                	"osCpe" : "cpe:/o:fedoraproject:fedora:37"
                }

                Module libXcompshad.so.3 with build-id 
9659f1f29363b90edb6b6f364a486879e61ac881
                Metadata for module libXcompshad.so.3 owned by FDO 
found: {
                	"type" : "rpm",
                	"name" : "nx-libs",
                	"version" : "3.5.99.26-5.fc37",
                	"architecture" : "x86_64",
                	"osCpe" : "cpe:/o:fedoraproject:fedora:37"
                }

                Module libXcomp.so.3 with build-id 
ecfa99d541b11f8cdab7905bf7f4ee26a44a0c52
                Metadata for module libXcomp.so.3 owned by FDO found: {
                	"type" : "rpm",
                	"name" : "nx-libs",
                	"version" : "3.5.99.26-5.fc37",
                	"architecture" : "x86_64",
                	"osCpe" : "cpe:/o:fedoraproject:fedora:37"
                }

                Module libX11.so.6 with build-id 
c347ec802bab174d083f12ada18f593f593cb1cf
                Metadata for module libX11.so.6 owned by FDO found: {
                	"type" : "rpm",
                	"name" : "nx-libs",
                	"version" : "3.5.99.26-5.fc37",
                	"architecture" : "x86_64",
                	"osCpe" : "cpe:/o:fedoraproject:fedora:37"
                }

                Module nxagent with build-id 
c64f96358a4519575fc02740674b41e64cd211b7
                Metadata for module nxagent owned by FDO found: {
                	"type" : "rpm",
                	"name" : "nx-libs",
                	"version" : "3.5.99.26-5.fc37",
                	"architecture" : "x86_64",
                	"osCpe" : "cpe:/o:fedoraproject:fedora:37"
                }

                Stack trace of thread 5414:
                #0  0x000055c346690215 damagePaintWindow (nxagent + 
0xef215)
                #1  0x000055c3468c2290 miWindowExposures (nxagent + 
0x321290)
                #2  0x000055c3468eee67 MapWindow.isra.0 (nxagent + 
0x34de67)
                #3  0x000055c3465e3924 main (nxagent + 0x42924)
                #4  0x00007fa340dd5510 __libc_start_call_main (libc.so.6 
+ 0x27510)
                #5  0x00007fa340dd55c9 __libc_start_main@@GLIBC_2.34 
(libc.so.6 + 0x275c9)
                #6  0x000055c3465e5cf5 _start (nxagent + 0x44cf5)
                ELF object binary architecture: AMD x86-64

GNU gdb (GDB) Fedora Linux 13.1-1.fc37
Copyright (C) 2023 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later 
<http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.
Type "show copying" and "show warranty" for details.
This GDB was configured as "x86_64-redhat-linux-gnu".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
<https://www.gnu.org/software/gdb/bugs/>.
Find the GDB manual and other documentation resources online at:
    <http://www.gnu.org/software/gdb/documentation/>.

For help, type "help".
Type "apropos word" to search for commands related to "word"...
Reading symbols from /usr/bin/nxagent...

This GDB supports auto-downloading debuginfo from the following URLs:
  <https://debuginfod.fedoraproject.org/>
Enable debuginfod for this session? (y or [n]) y
Debuginfod has been enabled.
To make this setting permanent, add 'set debuginfod enabled on' to 
.gdbinit.
Reading symbols from 
/root/.cache/debuginfod_client/c64f96358a4519575fc02740674b41e64cd211b7/debuginfo...
[New LWP 5414]
                                                                         
                                                                         
                                             --Type <RET> for more, q to 
quit, c to continue without paging--c
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib64/libthread_db.so.1".
Core was generated by `x2goagent -nolisten tcp -nolisten tcp -D -auth 
/home/marco/.Xauthority -geometr'.
Program terminated with signal SIGSEGV, Segmentation fault.
#0  0x000055c346690215 in damagePaintWindow (pWindow=0x55c348cd8a00, 
prgn=0x7ffeddb121a0, what=0) at miext/damage/damage.c:1574
1574        if ((what != PW_BACKGROUND || pWindow->backgroundState != 
None) &&

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X2Go Developers <owner@bugs.x2go.org>. Last modified: Sat Nov 2 12:37:16 2024; Machine Name: ymir.das-netzwerkteam.de

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