Hi Michael,
> We have powerpc specific logic in our page fault handling to decide if
> an access to an unmapped address below the stack pointer should expand
> the stack VMA.
>
> The logic aims to prevent userspace from doing bad accesses below the
> stack pointer. However as long as the stack is
Christophe Leroy writes:
> Le 03/07/2020 à 16:13, Michael Ellerman a écrit :
>> We have powerpc specific logic in our page fault handling to decide if
>> an access to an unmapped address below the stack pointer should expand
>> the stack VMA.
>>
>> The logic aims to prevent userspace from doing b
Excerpts from Christophe Leroy's message of July 6, 2020 3:49 am:
>
>
> Le 03/07/2020 à 16:13, Michael Ellerman a écrit :
>> We have powerpc specific logic in our page fault handling to decide if
>> an access to an unmapped address below the stack pointer should expand
>> the stack VMA.
>>
>> Th
Le 03/07/2020 à 16:13, Michael Ellerman a écrit :
We have powerpc specific logic in our page fault handling to decide if
an access to an unmapped address below the stack pointer should expand
the stack VMA.
The logic aims to prevent userspace from doing bad accesses below the
stack pointer. H
We have powerpc specific logic in our page fault handling to decide if
an access to an unmapped address below the stack pointer should expand
the stack VMA.
The logic aims to prevent userspace from doing bad accesses below the
stack pointer. However as long as the stack is < 1MB in size, we allow
