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From Nick Couchman <vn...@apache.org>
Subject Re: Segfault with guacamole 0.9.14
Date Wed, 27 Jun 2018 14:11:09 GMT
On Wed, Jun 27, 2018 at 10:01 AM Nicolas L├ęcureuil <
nicolas.lecureuil@siveo.net> wrote:

> *Hi,
>
> i rebuilded guacd 0.9.14 ( using my own build debs )
>
> # dpkg -l | grep guac
> ii  guacamole                               0.9.14-4                                
   all          HTML5 web application for accessing remote desktops
> ii  guacamole-auth-mysql                    0.9.14-1                                
   all          Guacamole Mysql Identification
> ii  guacd                                   0.9.14-1                                
   amd64        HTML5 web application for accessing remote desktops (proxy daemon)
> ii  guacd-dbgsym                            0.9.14-1                                
   amd64        Debug symbols for guacd
> ii  libguac-client-rdp0:amd64               0.9.14-1                                
   amd64        HTML5 web application for accessing remote desktops (RDP support)
> ii  libguac-client-rdp0-dbgsym:amd64        0.9.14-1                                
   amd64        Debug symbols for libguac-client-rdp0
> ii  libguac-client-ssh0:amd64               0.9.14-1                                
   amd64        HTML5 web application for accessing remote desktops (SSH support)
> ii  libguac-client-ssh0-dbgsym:amd64        0.9.14-1                                
   amd64        Debug symbols for libguac-client-ssh0
> ii  libguac-client-vnc0:amd64               0.9.14-1                                
   amd64        HTML5 web application for accessing remote desktops (VNC support)
> ii  libguac-client-vnc0-dbgsym:amd64        0.9.14-1                                
   amd64        Debug symbols for libguac-client-vnc0
> ii  libguac-dev:amd64                       0.9.14-1                                
   amd64        Guacamole proxy daemon (core library headers)
> ii  libguac11:amd64                         0.9.14-1                                
   amd64        HTML5 web application for accessing remote desktops (library)
> ii  libguac11-dbgsym:amd64                  0.9.14-1                                
   amd64        Debug symbols for libguac11
> *
>
>
What version of the libvncserver/libvncclient are you building against?

> *
>
> Each time i use the vnc plugin i can see a segfault in the logs.
>
> Jun 27 14:48:28 pulsemaster kernel: [712278.556955] guacd[25572]: segfault at 10 ip 00007f9eaea6f692
sp 00007f9ead477d10 error 4 in libguac-client-vnc.so.0.0.0[7f9eaea67000+13000]
> Jun 27 14:49:35 pulsemaster kernel: [712345.817333] guacd[25612]: segfault at 10 ip 00007f9eaea6f692
sp 00007f9eadc78d10 error 4 in libguac-client-vnc.so.0.0.0[7f9eaea67000+13000]
> Jun 27 14:50:41 pulsemaster kernel: [712412.051393] guacd[25655]: segfault at 10 ip 00007f9eaea6f692
sp 00007f9eacc76d10 error 4 in libguac-client-vnc.so.0.0.0[7f9eaea67000+13000]
> Jun 27 14:51:47 pulsemaster kernel: [712477.883688] guacd[25700]: segfault at 10 ip 00007f9eaea6f692
sp 00007f9ead477d10 error 4 in libguac-client-vnc.so.0.0.0[7f9eaea67000+13000]
> Jun 27 14:52:54 pulsemaster kernel: [712544.755122] guacd[25746]: segfault at 10 ip 00007f9eaea6f692
sp 00007f9eadc78d10 error 4 in libguac-client-vnc.so.0.0.0[7f9eaea67000+13000]
> Jun 27 14:54:03 pulsemaster kernel: [712613.432083] guacd[25794]: segfault at 10 ip 00007f9eaea6f692
sp 00007f9eacc76d10 error 4 in libguac-client-vnc.so.0.0.0[7f9eaea67000+13000]
> Jun 27 14:55:08 pulsemaster kernel: [712678.871467] guacd[25836]: segfault at 10 ip 00007f9eaea6f692
sp 00007f9ead477d10 error 4 in libguac-client-vnc.so.0.0.0[7f9eaea67000+13000]
> Jun 27 14:55:29 pulsemaster kernel: [712699.432836] guacd[25883]: segfault at 10 ip 00007f9eaea6f692
sp 00007f9eadc78d10 error 4 in libguac-client-vnc.so.0.0.0[7f9eaea67000+13000]
> Jun 27 14:57:39 pulsemaster kernel: [712829.633618] guacd[26029]: segfault at 10 ip 00007f9eaea6f692
sp 00007f9eacc76d10 error 4 in libguac-client-vnc.so.0.0.0[7f9eaea67000+13000]
> Jun 27 14:58:35 pulsemaster kernel: [712885.994620] guacd[26072]: segfault at 10 ip 00007f9eaea6f692
sp 00007f9ead477d10 error 4 in libguac-client-vnc.so.0.0.0[7f9eaea67000+13000]
> Jun 27 14:59:20 pulsemaster kernel: [712931.152907] guacd[26119]: segfault at 10 ip 00007f9eaea6f692
sp 00007f9eadc78d10 error 4 in libguac-client-vnc.so.0.0.0[7f9eaea67000+13000]
>
> I use a debian stretch.
> The vnc server is installed on a windows 10 ( TightVNC )*
>
> Any special configuration for VNC?  Are you trying to use encryption?
Anything else different about your VNC server configuration?  Have you
tried against other VNC servers on other target?

-Nick

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