oh, hmm.. are you importing buffers from i915? It looks like this part:
- if (obj->base.import_attach) { - drm_free_large(obj->pages); - obj->pages = NULL; - return; - }
should not have been removed from udl_gem_put_pages()..
BR, -R
On Mon, Nov 25, 2013 at 8:17 AM, thomas@m3y3r.de wrote:
Hi,
It turns out that this seems to be a bug in udl DRM driver.
I bisected the problem to this patch:
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/drive...
With kind regards Thomas
Am 22.11.2013 17:18 schrieb Daniel Vetter daniel@ffwll.ch:
On Fri, Nov 22, 2013 at 4:54 PM, Thomas Meyer thomas@m3y3r.de wrote:
Am 22.11.2013 um 11:55 schrieb Daniel Vetter daniel@ffwll.ch:
On Fri, Nov 22, 2013 at 11:36 AM, Dave Airlie airlied@linux.ie wrote:
Hi,
cc'ing mailing list,
Daniel any ideas?
Nope, not really :( And no ideas how to triage this further - if it takes 9 days to hit it eventually we'll have a real hard time. Or does this happen even after just a short X run?
Seems to happen every time while stopping the x server. Also after a short run time.
The current fedora 3.11 kernel doesn't show this bug. I'm using fedora 19, with a self compiled kernel.
I did turn on config-debug-pagealloc but this didn't show any wrongness.
In that case I think the bisect is the fastest way to insight - atm I'm really at loss what could be wrong here.
-Daniel
Daniel Vetter Software Engineer, Intel Corporation +41 (0) 79 365 57 48 - http://blog.ffwll.ch
Am Montag, den 25.11.2013, 08:23 -0500 schrieb Rob Clark:
oh, hmm.. are you importing buffers from i915? It looks like this part:
My computer has an i915 graphic card and I use an USB docking station, that has an unconnected UDL device inside.
- if (obj->base.import_attach) {
- drm_free_large(obj->pages);
- obj->pages = NULL;
- return;
- }
should not have been removed from udl_gem_put_pages()..
Do you want me to test this? Can this please be fixed in the stable tree? I removed the UDL driver from my config for now, as I don't use it. * best regards thomas
BR, -R
On Mon, Nov 25, 2013 at 8:17 AM, thomas@m3y3r.de wrote:
Hi,
It turns out that this seems to be a bug in udl DRM driver.
I bisected the problem to this patch:
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/drive...
With kind regards Thomas
Am 22.11.2013 17:18 schrieb Daniel Vetter daniel@ffwll.ch:
On Fri, Nov 22, 2013 at 4:54 PM, Thomas Meyer thomas@m3y3r.de wrote:
Am 22.11.2013 um 11:55 schrieb Daniel Vetter daniel@ffwll.ch:
On Fri, Nov 22, 2013 at 11:36 AM, Dave Airlie airlied@linux.ie wrote:
> Hi,
cc'ing mailing list,
Daniel any ideas?
Nope, not really :( And no ideas how to triage this further - if it takes 9 days to hit it eventually we'll have a real hard time. Or does this happen even after just a short X run?
Seems to happen every time while stopping the x server. Also after a short run time.
The current fedora 3.11 kernel doesn't show this bug. I'm using fedora 19, with a self compiled kernel.
I did turn on config-debug-pagealloc but this didn't show any wrongness.
In that case I think the bisect is the fastest way to insight - atm I'm really at loss what could be wrong here.
-Daniel
Daniel Vetter Software Engineer, Intel Corporation +41 (0) 79 365 57 48 - http://blog.ffwll.ch
On Sat, Nov 30, 2013 at 3:33 AM, Thomas Meyer thomas@m3y3r.de wrote:
Am Montag, den 25.11.2013, 08:23 -0500 schrieb Rob Clark:
oh, hmm.. are you importing buffers from i915? It looks like this part:
My computer has an i915 graphic card and I use an USB docking station, that has an unconnected UDL device inside.
- if (obj->base.import_attach) {
- drm_free_large(obj->pages);
- obj->pages = NULL;
- return;
- }
should not have been removed from udl_gem_put_pages()..
Do you want me to test this? Can this please be fixed in the stable tree? I removed the UDL driver from my config for now, as I don't use it.
It would be nice if you could test that (I can send you a patch if you prefer).. I don't actually have any UDL device to confirm. If this fixes the problem, send the patch to stable as well should not be a problem.
BR, -R
*best regards thomas
BR, -R
On Mon, Nov 25, 2013 at 8:17 AM, thomas@m3y3r.de wrote:
Hi,
It turns out that this seems to be a bug in udl DRM driver.
I bisected the problem to this patch:
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/drive...
With kind regards Thomas
Am 22.11.2013 17:18 schrieb Daniel Vetter daniel@ffwll.ch:
On Fri, Nov 22, 2013 at 4:54 PM, Thomas Meyer thomas@m3y3r.de wrote:
Am 22.11.2013 um 11:55 schrieb Daniel Vetter daniel@ffwll.ch:
On Fri, Nov 22, 2013 at 11:36 AM, Dave Airlie airlied@linux.ie wrote: >> Hi, > > cc'ing mailing list, > > Daniel any ideas?
Nope, not really :( And no ideas how to triage this further - if it takes 9 days to hit it eventually we'll have a real hard time. Or does this happen even after just a short X run?
Seems to happen every time while stopping the x server. Also after a short run time.
The current fedora 3.11 kernel doesn't show this bug. I'm using fedora 19, with a self compiled kernel.
I did turn on config-debug-pagealloc but this didn't show any wrongness.
In that case I think the bisect is the fastest way to insight - atm I'm really at loss what could be wrong here.
-Daniel
Daniel Vetter Software Engineer, Intel Corporation +41 (0) 79 365 57 48 - http://blog.ffwll.ch
Am Samstag, den 30.11.2013, 08:55 -0500 schrieb Rob Clark:
On Sat, Nov 30, 2013 at 3:33 AM, Thomas Meyer thomas@m3y3r.de wrote:
Am Montag, den 25.11.2013, 08:23 -0500 schrieb Rob Clark:
oh, hmm.. are you importing buffers from i915? It looks like this part:
My computer has an i915 graphic card and I use an USB docking station, that has an unconnected UDL device inside.
- if (obj->base.import_attach) {
- drm_free_large(obj->pages);
- obj->pages = NULL;
- return;
- }
should not have been removed from udl_gem_put_pages()..
Do you want me to test this? Can this please be fixed in the stable tree? I removed the UDL driver from my config for now, as I don't use it.
It would be nice if you could test that (I can send you a patch if you prefer).. I don't actually have any UDL device to confirm. If this fixes the problem, send the patch to stable as well should not be a problem.
I did a quick test and above code makes the bad page bug disappear.
BR, -R
*best regards thomas
BR, -R
On Mon, Nov 25, 2013 at 8:17 AM, thomas@m3y3r.de wrote:
Hi,
It turns out that this seems to be a bug in udl DRM driver.
I bisected the problem to this patch:
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/drive...
With kind regards Thomas
Am 22.11.2013 17:18 schrieb Daniel Vetter daniel@ffwll.ch:
On Fri, Nov 22, 2013 at 4:54 PM, Thomas Meyer thomas@m3y3r.de wrote:
> Am 22.11.2013 um 11:55 schrieb Daniel Vetter daniel@ffwll.ch: > > On Fri, Nov 22, 2013 at 11:36 AM, Dave Airlie airlied@linux.ie wrote: >>> Hi, >> >> cc'ing mailing list, >> >> Daniel any ideas? > > Nope, not really :( And no ideas how to triage this further - if it > takes 9 days to hit it eventually we'll have a real hard time. Or does > this happen even after just a short X run?
Seems to happen every time while stopping the x server. Also after a short run time.
The current fedora 3.11 kernel doesn't show this bug. I'm using fedora 19, with a self compiled kernel.
I did turn on config-debug-pagealloc but this didn't show any wrongness.
In that case I think the bisect is the fastest way to insight - atm I'm really at loss what could be wrong here.
-Daniel
Daniel Vetter Software Engineer, Intel Corporation +41 (0) 79 365 57 48 - http://blog.ffwll.ch
dri-devel@lists.freedesktop.org
-
Rob Clark -
Thomas Meyer