Re: [RFC PATCH for 4.18 1/2] rseq: validate rseq_cs fields are < TASK_SIZE

[Linus Torvalds]

On Fri, Jun 29, 2018 at 7:05 AM Mathieu Desnoyers
<mathieu.desnoyers@xxxxxxxxxxxx> wrote:
>
> What I'm worried about is setting regs->ip of a compat 32-bit task to
> addresses in the range 0x100000000-0xFFFFFFFFFFFFFFFF.

Well, they won't have anything mapped in that range, so it really
shouldn't matter.

                 Linus