On Tue, Jan 28, 2020 at 4:01 PM Vieri <[email protected]> wrote:

>
>
>  On Tuesday, January 28, 2020, 7:19:07 PM GMT+1, Mike Jumper <
> [email protected]> wrote:
> >
> > If it's possible in Gentoo to install debug symbols for libvncclient,
> that might get a more meaningful backtrace from gdb, seeing as the segfault
> is occuring within
> > libvncclient and it's not currently clear exactly where.
>
> Built libvnc with -g -O0.
>
> guacd[5790]: DEBUG:    Requesting termination of client...
> [Thread 0x7ffff508f700 (LWP 5798) exited]
> [Thread 0x7ffff68ea700 (LWP 5793) exited]
> [New Thread 0x7ffff68ea700 (LWP 5855)]
> guacd[5790]: TRACE:    Server completed frame 53877746ms.
> guacd[5790]: INFO:    Internal VNC client disconnected
> [Thread 0x7ffff60e9700 (LWP 5795) exited]
>
> Thread 2.6 "guacd" received signal SIGSEGV, Segmentation fault.
> [Switching to Thread 0x7ffff68ea700 (LWP 5855)]
> 0x00007ffff7daabd0 in free () from /lib64/libc.so.6
> (gdb) bt
> #0  0x00007ffff7daabd0 in free () from /lib64/libc.so.6
> #1  0x00007ffff69966ae in rfbClientCleanup (client=0x7ffff5090010) at
> /var/tmp/portage/net-libs/libvncserver-0.9.12-r4/work/libvncserver-LibVNCServer-0.9.12/libvncclient/vncviewer.c:526
> #2  0x00007ffff69ac26c in guac_vnc_client_free_handler
> (client=0x7ffff000b380) at client.c:92
> #3  0x00007ffff7faa426 in guac_client_free (client=0x7ffff000b380) at
> client.c:195
> #4  0x000055555555914e in guacd_client_free_thread (data=0x7ffff71bdbb0)
> at proc.c:219
> #5  0x00007ffff7f87427 in start_thread () from /lib64/libpthread.so.0
> #6  0x00007ffff7e242bf in clone () from /lib64/libc.so.6
> (gdb)
>

What VNC server are you using and in what environment? Any specific
settings for that server?

- Mike

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