Re: Xorg signal 11's spontaneously

[Adam Jackson <ajackson redhat com>]

Dennis Jacobfeuerborn wrote:
> Tracked down a testcase using the Xorg changelog but I get a different 
> backtrace when triggering that bug so this seems to be a different 
> problem. Unfortunately I also didn't get a core dump and I'm not sure 
> why. I added the line DAEMON_COREFILE_LIMIT="unlimited" to 
> /etc/sysconfig/init and changed the line in /etc/profile to "ulimit -S 
> -c unlimited > /dev/null 2>&1" but after crashing X I now no longer get 
> a backtrace in the Xorg.log (due to the NoTrapSignal option?) but I also 
> don't see a core dump in the home directories. What else do I have to do 
> to get a core dump I can feed to gdb?

IIRC it's something like 'chmod 4755 `which Xorg`' and possibly also run 
the server as root, the kernel will try really really hard to not dump 
core for suid binaries (rightly so).

- ajax