Re: [PATCH v2] mm/vma: keep the unlinked VMA off the file across unmap on mmap hook failure

[Lorenzo Stoakes (ARM)]

On Fri, Oct 09, 2026 at 09:38:56AM -0700, Ihor Solodrai wrote:
> On 2026-10-09 4:31 a.m., Lorenzo Stoakes (ARM) wrote:
> > -cc slopper
> >
> > On Thu, Oct 08, 2026 at 02:48:07PM -0700, Ihor Solodrai wrote:
> > > BPF CI caught this bug on linux-next as well:
> > > https://github.com/kernel-patches/bpf/actions/runs/37736351874
> >
> > Nice that it caught it!
> >
> > Is there a way to automatically notify patch author that when it happens? Does
> > it bisect, etc. or just green/red?
>
> For linux-next it's just green/red now.

That's still nice! We have something similar in mm. I think possibly
inspired by you guys :)

>
> We've added it to have an "upstream merge will break bpf" signal,
> because it happened regularly.
>
> For bpf list we run on every incoming patch, so regressions are detected
> quickly. Not feasible to do that for *every* upstream patch, we'd need
> much more compute.
>
> An auto-bisection is something I thought about, but never got to it.
> These days with LLMs this may be easier to set up though.

yeah that'd be awesome, but obviously a nice-to-have!

--
Cheers, Lorenzo