Re: kernel panic with libdrm-2.4.12-2-g9aed44b

[Jerome G. <gl...@fr...>]

On Tue, 2009-07-21 at 04:00 -0700, Steven Noonan wrote:
> On Tue, Jul 21, 2009 at 3:53 AM, Steven Noonan<st...@up...> wrote:
> > On Tue, Jul 21, 2009 at 3:45 AM, Dave Airlie<ai...@gm...> wrote:
> >>>
> >>> I'm getting a kernel panic when trying to run the latest git version
> >>> of drm. I built it following the instructions from here:
> >>> http://dri.freedesktop.org/wiki/Building
> >>>
> >>> It's a very very predictable panic. Log in, 'startx', exit X11, and
> >>> then after a couple seconds, panic.
> >>>
> >>> I unfortunately can't get a text version of the panic log, but I do
> >>> have a photo: http://twitpic.com/b2yva
> >>>
> >>> Any ideas? More importantly, am I excluding any important information
> >>> to help debug the issue?
> >>>
> >>
> >> Don't use the kernel modules from that tree, use whatever came with the kernel.
> >>
> >> Dave.
> >
> > Okay, well, I've almost debugged it anyway. I'll have a couple patches
> > for you in less than a half hour.
> >
> 
> One patch submitted. And I can't figure out why, but the timer that is
> supposed to be deleted by drm_vblank_cleanup() isn't getting
> destroyed. And once the timer fires, the device is already
> invalidated, and it oopses in radeon_get_vblank_counter(). The obvious
> temporary solution is a check whether dev->mmio is a valid pointer,
> and if not, return -EINVAL. But obviously, fixing the timer is more
> ideal.
> 
> - Steven.


Don't bother fixing anythings in this code, it should be considered dead
and we should delete it. I am all for creating libdrm and broke build of
drm so that people stop trying build it. Something like a big message
when someone type make.

Use Linus tree if you want lastest bits, bugs you are facing are already
corrected their.

Cheers,
Jerome