[drm] [radeon] [3.1.4] slub memory corruption in drm_vblank_cleanup

[Jerome Glisse]

On Tue, Dec 13, 2011 at 6:46 PM, Jerome Glisse <j.glisse at gmail.com> wrote:
> On Tue, Dec 13, 2011 at 6:33 PM, batouzo <batouzo at gmx.com> wrote:
>> On 12/14/2011 12:31 AM, Jerome Glisse wrote:
>>
>>>> Allocated in drm_vblank_init+0x139/0x260 [drm] + Freed in
>>>> drm_vblank_cleanup+0x78/0x90 [drm]
>>>> Allocated in drm_vblank_init+0xbe/0x260 [drm] + Freed in
>>>> drm_vblank_cleanup+0x48/0x90 [drm]
>>>>
>>>> It is Amd Bulldozer computer, with Radeon card:
>>>> 01:00.0 VGA compatible controller: ATI Technologies Inc Cedar PRO
>>>> [Radeon HD 5450]
>>>>
>>>>    messages: http://pastebin.com/NXN5EPtG
>>>> config used: http://pastebin.com/AeVxEX7c
>>
>>>
>>> Do you boot your kernel with kexec ? Does the patch help :
>>
>> Nope. Already seen that kexec bugfix on LKML but I start system normally
>> not with kexec.
>>
>>> http://people.freedesktop.org/~glisse/0001-drm-radeon-disable-possible-GPU-writeback-early-v3.patch
>>> If not please open bug on bugs.freedesktop.org against radeon driver.
>>
>> ok
>>
>
> Note that this patch might also help non kexec case.
>
> Cheers,
> Jerome

Oh and try booting with radeon.no_wb=1

Cheers,
Jerome