Finally, after some delay, acer & wmi will stop oops.
Patch was finally merged on linux-2.6.31-rc7-git5. http://patchwork.kernel.org/patch/29082/
The oops only happened when stack protector was enabled, and affecting only Acer Laptops .

Another patch relating kgdb + tty subsys, merged on 2.6.31-rc1 and core fixed by Alan Cox.
Info



Ekoparty comming soon.