Bug#549314: xorg: Xorg crashes at random, exactly once

[Julien Cristau <jcristau@debian.org>]

On Thu, Oct  8, 2009 at 20:49:25 +0200, Stefan Klinger wrote:

> On 08 October 2009, Brice Goglin wrote with possible deletions:
> > You should start X normally,and then connect to the machine through ssh
> > and type gdp -p $(pidof X)
> > Then enter 'c' for continue in gdb, reproduce the bug, and get the
> > backtrace with 'bt full' in gdb.
> 
> Ok. That's what I did. the results are attached.
> 
> There are 3*3=9 files attached. Their names indicate the conditions under which the error showed up:
> 
>  - The files triggered.* com from a crash triggered by calling 'dmesg 9' as
>    non-privoleged user. Yes, it is 'dmesg 9' not 'dmesg -n 9'.
>    
>  - The random.* files come from a crash that I did not consiously trigger. I
>    bet I did, but I dont know why or how.
>    
>  - The normal.* files come from "normal" operation. I include them, because X
>    seems to terminate with a SEGFAULT when the windowmanager disconnects and my
>    session terminates.
>  
Any chance you could try again to get gdb traces, but this time with
'handle SIGPIPE nostop' at the gdb prompt before reproducing?  SIGPIPE
in the X server happens in normal operation, when a client disconnects.

The 'normal.*' segfault (on server restart) is a known bug, fixed in
intel 2.9.0, so don't worry about that one.

Thanks,
Julien