On Thu, Jun 28, 2018 at 1:23 PM Andy Lutomirski <luto@xxxxxxxxxx> wrote:
>
> This is okay with me for a fix outside the merge window. Can you do a
> followup for the next merge window that fixes it better, though? In
> particular, TASK_SIZE is generally garbage. I think a better fix
> would be something like adding a new arch-overridable helper like:
>
> static inline unsigned long current_max_user_addr(void) { return TASK_SIZE; }
We already have that. It's called "user_addr_max()".
It's the limit we use for user accesses.
That said, I don't see why we should even check the IP. It's not like
that's done by signal handling either.
Linus
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