Bug 174702

Summary: Segmentation fault when starting Xvnc
Product: [Fedora] Fedora Reporter: Brian Gerst <brgerst>
Component: vncAssignee: Tim Waugh <twaugh>
Status: CLOSED RAWHIDE QA Contact: David Lawrence <dkl>
Severity: medium Docs Contact:
Priority: medium    
Version: rawhideCC: oliva
Target Milestone: ---   
Target Release: ---   
Hardware: x86_64   
OS: Linux   
Whiteboard:
Fixed In Version: 4.1.1-27 Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2005-12-06 14:48:19 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On:    
Bug Blocks: 150221    

Description Brian Gerst 2005-12-01 15:53:53 UTC 
From Bugzilla Helper:
User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8) Gecko/20051111 Firefox/1.5

Description of problem:
Program received signal SIGSEGV, Segmentation fault.
0x0000000000413f11 in vfbScreenInit (index=Variable "index" is not available.
) at xvnc.cc:874
874         for (vis = pScreen->visuals; vis->vid != pScreen->rootVisual; vis++)


Version-Release number of selected component (if applicable):
vnc-server-4.1.1-24

How reproducible:
Always

Steps to Reproduce:
1. Start Xvnc :1
2.
3. 

Actual Results:  Xvnc Free Edition 4.1.1
Copyright (C) 2002-2005 RealVNC Ltd.
See http://www.realvnc.com for information on VNC.
Underlying X server release 69999902, The X.Org Foundation


Program received signal SIGSEGV, Segmentation fault.
0x0000000000413f11 in vfbScreenInit (index=Variable "index" is not available.
) at xvnc.cc:874
874         for (vis = pScreen->visuals; vis->vid != pScreen->rootVisual; vis++)
Current language:  auto; currently c++
(gdb) bt
#0  0x0000000000413f11 in vfbScreenInit (index=Variable "index" is not available.
) at xvnc.cc:874
#1  0x00000000004317ec in AddScreen (pfnInit=0x413bde <vfbScreenInit>, argc=2, argv=0x7fffffcc6b28) at main.c:781
#2  0x0000000000414259 in InitOutput (screenInfo=0x670de0, argc=2, argv=0x7fffffcc6b28) at xvnc.cc:964
#3  0x0000000000432048 in main (argc=2, argv=0x7fffffcc6b28, envp=Variable "envp" is not available.
) at main.c:372
#4  0x00000039b5f1ce9f in __libc_start_main () from /lib64/libc.so.6
#5  0x0000000000413419 in _start ()
#6  0x00007fffffcc6b18 in ?? ()
#7  0x0000000000000000 in ?? ()


Expected Results:  It runs.

Additional info:
Comment 1 Tim Waugh 2005-12-01 16:12:04 UTC 
Indeed.  Actually for 'how to reproduce' you need to connect an X client first.
 But this is now fixed.  Thanks for testing!

*** This bug has been marked as a duplicate of 173323 ***
Comment 2 Brian Gerst 2005-12-01 16:24:51 UTC 
In my case, it never got far enough to allow client connections.  The segfault
was immediate on startup.
Comment 3 Brian Gerst 2005-12-02 16:21:08 UTC 
Updated to vnc-server-4.1.1-26 and still getting the segfault.
Comment 4 Tim Waugh 2005-12-02 16:22:55 UTC 
Different stack trace?
Comment 5 Brian Gerst 2005-12-02 16:25:21 UTC 
Same backtrace.
Comment 6 Brian Gerst 2005-12-02 16:27:39 UTC 
Just for kicks I installed the i386 version and it works, so the problem is
x86_64 specific.
Comment 7 Tim Waugh 2005-12-06 14:48:19 UTC 
This should be fixed in 4.1.1-27.