Bug 124448 - vnc-4.0-1.beta5.1 takes down the kernel
vnc-4.0-1.beta5.1 takes down the kernel
Product: Fedora
Classification: Fedora
Component: kernel (Show other bugs)
All Linux
medium Severity high
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Assigned To: Dave Jones
Depends On:
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Reported: 2004-05-26 13:00 EDT by mark
Modified: 2015-01-04 17:06 EST (History)
2 users (show)

See Also:
Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of:
Last Closed: 2005-07-14 20:14:31 EDT
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Regression: ---
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oVirt Team: ---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---

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Description mark 2004-05-26 13:00:26 EDT
From Bugzilla Helper:
User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.7) Gecko/20040514

Description of problem:
on Fedora Core 2 (updated with rawhide) with kernel 2.6.6-1.368...

VNC is not only hanging the Xserver but the linux kernel as well!

i'm trying to connect using vnc from chrisf53 ( to markf78
( i've opened ports 5900 and 5901 in the firewall on 
markf78 to allow vnc traffic to enter.

selinux is disabled in both systems.

[root@chrisf53 root]# rpm -qa | grep vnc*

[root@markf78 root]# rpm -qa | grep vnc*

in my /etc/X11/xorg.conf on "markf78", i added:

Load  "vnc" to Section "Module"
Option "passwordFile" "/root/.vnc/passwd" to Section "Screen"

[root@markf78 root]# more /etc/sysconfig/vncservers
# The VNCSERVERS variable is a list of display:user pairs.
# Uncomment the line below to start a VNC server on display :1
# as my 'myusername' (adjust this to your own).  You will also
# need to set a VNC password; run 'man vncpasswd' to see how
# to do that.
# DO NOT RUN THIS SERVICE if your local area network is
# untrusted!  For a secure way of using VNC, see
# <URL:http://www.uk.research.att.com/vnc/sshvnc.html>.
VNCSERVERARGS[1]="-geometry 800x600"
[root@markf78 root]#

[root@chrisf53 root]# vncviewer
VNC viewer for X version 4.0b5 - built May 20 2004 10:53:23
Copyright (C) 2002-2004 RealVNC Ltd.
See http://www.realvnc.com for information on VNC.
Fri May 21 22:31:26 2004
 CConn:       connected to host port 5900
 CConnection: Server supports RFB protocol version 3.7
 CConnection: Using RFB protocol version 3.7
Fri May 21 22:31:35 2004
 TXImage:     Using default colormap and visual, TrueColor, depth 16.
 CConn:       Using pixel format depth 6 (8bpp) rgb222
 CConn:       Using ZRLE encoding

(system crashes including kernel)

[root@chrisf53 root]# ssh
ssh: connect to host port 22: No route to host
[root@chrisf53 root]# ping
PING ( 56(84) bytes of data.
From icmp_seq=0 Destination Host Unreachable
From icmp_seq=1 Destination Host Unreachable
From icmp_seq=2 Destination Host Unreachable
--- ping statistics ---
3 packets transmitted, 0 received, +3 errors, 100% packet loss, time
, pipe 4

btw, i forgot to mention that i altered my XF86Config to parallel the
changes in xorg.conf due to "http://www.realvnc.com/v4/x0.html"
(outdated???) although i am assuming this file is now ignored with the
transition to xorg. 

Version-Release number of selected component (if applicable):
kernel 2.6.6-1.368

How reproducible:

Steps to Reproduce:
1.see description

Additional info:
Comment 1 Dave Jones 2004-11-02 22:47:29 EST
is this still a problem in current kernels ?
Comment 2 mark 2004-11-03 01:48:45 EST
since the advansys scsi module hasn't been included in recent kernels,
i'm stuck at kernel-2.6.6-1.435.2.3 and unable to provide more info at
the moment...
Comment 3 mark 2005-07-14 20:14:31 EDT
this is not an issue in FC4... sorry about the delay in responding

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