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

[Jerome Glisse]

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