Re: [PATCH RESEND v2] mm: Optional full ASLR for mmap() and mremap()

[Jann Horn]

On Thu, Oct 8, 2020 at 7:23 PM Matthew Wilcox <willy@xxxxxxxxxxxxx> wrote:
> On Thu, Oct 08, 2020 at 07:13:51PM +0200, Jann Horn wrote:
> > And for expanding stacks, it might be a good idea for other
> > reasons as well (locking consistency) to refactor them such that the
> > size in the VMA tree corresponds to the maximum expansion of the stack
> > (and if an allocation is about to fail, shrink such stack mappings).
>
> We're doing that as part of the B-tree ;-)  Although not the shrink
> stack mappings part ...

Wheee, thanks! Finally no more data races on ->vm_start?