Re: 2.6.14 X spinning in the kernel

[Max Krasnyansky <maxk@qualcomm.com>]

Badari Pulavarty wrote:
> > Badari Pulavarty <pbadari@us.ibm.com> wrote:
> >
> > > On Mon, 2005-11-14 at 16:17 -0800, Andrew Morton wrote:
> > >
> > > > Badari Pulavarty <pbadari@us.ibm.com> wrote:
> > > >
> > > > > My 2-cpu EM64T machine started showing this problem again on 2.6.14.
> > > > > On some reboots, X seems to spin in the kernel forever.
> > > > >
> > > > > sysrq-t output shows nothing.
> > > > >
> > > > > X             R  running task       0  3607   3589          3903
> > > > > (L-TLB)
> > > > >
> > > > > top shows:
> > > > > 3607 root      25   0     0    0    0 R 99.1  0.0 262:04.69 X
> > > > >
> > > > >
> > > > > So, I wrote a module to do smp_call_function() on all CPUs
> > > > > to show stacks on them. CPU0 seems to be spinning in exit_mmap().
> > > > > I did this multiple times to collect stacks few times.
> > > > >
> > > > > Is this a known issue ?

I've seen similar problems on dual Opteron HP xw9300/Radeon 7000 PCI box with 2.6.11.12
and latest X from Fedora x86-64 YUM repos.
I haven't done any traces but it sounds like the same problem (ie X server is spinning).
Disabling DRI in xorg.conf fixed it for me.

Max
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