[Pkg-tigervnc-devel] Bug#932499: tigervnc-standalone-server: does not start in buster on arm64

[Kevin Otte]

Most interesting. If I set the main and view-only passwords to the same
value as you suggest, the server starts up and I am able to connect.

As soon as I disconnect the client, the server again crashes with a
backtrace:

kjotte at donatello:~$ cat .vnc/donatello.home.nivex.net\:1.log
Xvnc TigerVNC 1.9.0 - built Dec  1 2018 21:51:29
Copyright (C) 1999-2018 TigerVNC Team and many others (see README.rst)
See http://www.tigervnc.org for information on TigerVNC.
Underlying X server release 12003000, The X.Org Foundation


Mon Jul 22 13:36:17 2019
 vncext:      VNC extension running!
 vncext:      Listening for VNC connections on local interface(s), port 5901
 vncext:      created VNC server for screen 0
Openbox-Message: Unable to find a valid menu file
"/var/lib/openbox/debian-menu.xml"

Mon Jul 22 13:36:21 2019
 Connections: accepted: 127.0.0.1::56910
 SConnection: Client needs protocol version 3.8
 SConnection: Client requests security type VncAuth(2)
 VNCSConnST:  Server default pixel format depth 16 (16bpp) little-endian
rgb565
 VNCSConnST:  Client pixel format depth 16 (16bpp) little-endian rgb565
terminate called after throwing an instance of 'rdr::EndOfStream'
terminate called recursively
(EE)
(EE) Backtrace:
(EE) 0: /usr/bin/Xtigervnc (OsLookupColor+0x1a8) [0xaaaac575c9d0]
(EE) unw_get_proc_info failed: no unwind info found [-10]
(EE)
(EE)
Fatal server error:
(EE) Caught signal 6 (Aborted). Server aborting
(EE)
XIO:  fatal IO error 11 (Resource temporarily unavailable) on X server ":1"
      after 4245 requests (4245 known processed) with 0 events remaining.
syswrite() on closed filehandle WH at /usr/bin/vncserver line 912.


Additionally, I discovered that if you provide the wrong password from
the client, the server will crash with a nearly identical traceback, the
only change being where terminate is called:

terminate called after throwing an instance of 'rfb::AuthFailureException'

So it appears that any exception thrown will cause the server to crash.

On 7/22/19 5:41 AM, Bernhard Übelacker wrote:
> Am 22.07.19 um 03:28 schrieb Kevin Otte:
>> That is correct.
> 
> Strange, because in my VM I received just the
> Backtrace when using no view-only password.
> One thing to note, I used the same password for
> regular and view-only ...
>