Bug 79141

Summary: [4.2.1-9] reproducible segfault in X
Product: [Retired] Red Hat Raw Hide Reporter: Aleksey Nogin <aleksey>
Component: XFree86Assignee: Mike A. Harris <mharris>
Status: CLOSED RAWHIDE QA Contact: David Lawrence <dkl>
Severity: high Docs Contact:
Priority: medium    
Version: 1.0   
Target Milestone: ---   
Target Release: ---   
Hardware: i386   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2003-01-07 13:32:19 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: 79579    
Attachments:
Description Flags
Warning: Clicking this link could crash your X!
none
X log
none
gdb stack trace (not too informative)
none
X Config
none
lspci -vv output
none
Simplified XF86Config that I used to reporduce the problem.
none
X log (running under the standard 2.4.18-19.8.0, using a simple config) none

Description Aleksey Nogin 2002-12-06 08:45:45 UTC 
Not sure if you still care about 4.2.1-9, reporting just in case (not sure if
bug exists in some other versions as well).

I came across a 100% reporducible crash in X, caused by gv (even in the absense
of any other X client, WM, etc):

env -i HOME=$HOME XAUTHORITY=$XAUTHORITY PATH=$PATH X :2 -auth $XAUTHORITY &
env -i HOME=$HOME XAUTHORITY=$XAUTHORITY PATH=$PATH DISPLAY=:2 gv /tmp/pentgrph.eps

and the X crashes (as soon as I switch to the virtual console under which this
instance of X is running). I'll attach all the relavant files shortly.

I am running 8.0 + most updates + XFree86-4.2.1-9 (I wanted to run Mozilla-xft,
so I wanted a version of X that has the xft bug fixed). The video card is
(according to lspci) "ATI Technologies Inc Radeon Mobility M7 LW [Radeon
Mobility 7500]" in Dell Latitude C640.
Comment 1 Aleksey Nogin 2002-12-06 08:49:37 UTC 
Created attachment 87644 [details]
Warning: Clicking this link could crash your X!
Comment 2 Aleksey Nogin 2002-12-06 08:50:20 UTC 
Created attachment 87645 [details]
X log
Comment 3 Aleksey Nogin 2002-12-06 08:51:11 UTC 
Created attachment 87646 [details]
gdb stack trace (not too informative)
Comment 4 Aleksey Nogin 2002-12-06 08:51:51 UTC 
Created attachment 87647 [details]
X Config
Comment 5 Aleksey Nogin 2002-12-06 08:52:42 UTC 
Created attachment 87648 [details]
lspci -vv output
Comment 6 Mike A. Harris 2002-12-27 00:51:42 UTC 
You are not using an official Red Hat kernel, you are using a custom
built kernel, which Red Hat does not support.

Is this problem reproduceable using the latest official Red Hat released
kernel erratum for RHL 8.0?
Comment 7 Mike A. Harris 2002-12-27 00:55:26 UTC 
 Driver      "synaptics"

You are also using an input driver which is not part of Red Hat Linux,
and not supported by Red Hat.  Since externally supplied X driver modules
become part of the XFree86 process itself once dynamically loaded, your
entire setup is unsupported.  It also looks to me like the driver you've
added is what is causing the problem.

Closing bug NOTABUG.
Comment 8 Aleksey Nogin 2002-12-27 01:45:34 UTC 
I replaces the synaptics driver with a normal IMPS/2 one and I still get the
crash. The custom kernel is almost identical to the Red Hat's one (same sources
with slightly different config settings), but to be sure I will test it using a
regular kernel too and will let you know.
Comment 9 Aleksey Nogin 2002-12-27 02:47:08 UTC 
Yes, still getting the same crash under 2.4.18-19.8.0. I'll attach the relevant
files.
Comment 10 Aleksey Nogin 2002-12-27 02:49:34 UTC 
Created attachment 88936 [details]
Simplified XF86Config that I used to reporduce the problem.

This does not use synaptics driver or (I believe) anything else nonstandard.
Comment 11 Aleksey Nogin 2002-12-27 02:51:05 UTC 
Created attachment 88937 [details]
X log (running under the standard  2.4.18-19.8.0, using a simple config)
Comment 12 Aleksey Nogin 2003-01-06 07:59:15 UTC 
FWIW, it works OK in Phoebe.
Comment 13 Mike A. Harris 2003-01-07 13:32:19 UTC 
Closing as RAWHIDE