[PATCH v3 1/3] mm/hugetlb: Make hugetlb_reserve_pages() return nr of entries updated

[Kasireddy, Vivek]

Hi Andrew,

> Subject: Re: [PATCH v3 1/3] mm/hugetlb: Make hugetlb_reserve_pages()
> return nr of entries updated
> 
> On Fri, 6 Jun 2025 06:14:06 +0000 "Kasireddy, Vivek"
> <vivek.kasireddy at intel.com> wrote:
> 
> > > Also, patch [2/3] addresses a BUG which was introduced into 6.12.
> > > Presumably we want to backport the fix into -stable?  If so, it's
> > > better to present this as a standalone patch, including the cc:stable
> > > tag.  This is because I'd be looking to fast-track the fix into the
> > > 6.16-rcX cycle whereas less urgent things would be routed into
> > > 6.17-rc1.
> > Unless I merge patches #1 and #2, I don't think I can come up with a
> > standalone fix to address the BUG. So, I don't mind having this short
> > series deferred until 6.17-rc1.
> 
> If I understand correctly, we have a way in which unprivileged
> userspace can trigger a BUG.  Unless we're very lucky, this wrecks the
> running kernel.  So fixing this in shipped kernels is very important.
> 
> So if I indeed understand correctly, please try to find a minimal fix
> which is suitable for backporting and then, as a separate series,
> propose any changes which you think would improve things going forward.
Ok, I'll try to come up with a standalone patch to fix the reported BUG 
and separate out other changes into different patches.

Thanks,
Vivek

> 
> Thanks.