linux-kernel - Re: [PATCH hotfix 6.12 v2 4/8] mm: resolve faulty mmap

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Message-ID: <ZyEcSCuxYGylmDCa@arm.com>
Date: Tue, 29 Oct 2024 17:32:56 +0000
From: Catalin Marinas <catalin.marinas@....com>
To: Lorenzo Stoakes <lorenzo.stoakes@...cle.com>
Cc: Vlastimil Babka <vbabka@...e.cz>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	"Liam R. Howlett" <Liam.Howlett@...cle.com>,
	Mark Brown <broonie@...nel.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Jann Horn <jannh@...gle.com>, linux-kernel@...r.kernel.org,
	linux-mm@...ck.org, Peter Xu <peterx@...hat.com>,
	linux-arm-kernel@...ts.infradead.org, Will Deacon <will@...nel.org>,
	Aishwarya TCV <Aishwarya.TCV@....com>
Subject: Re: [PATCH hotfix 6.12 v2 4/8] mm: resolve faulty mmap_region()
 error path behaviour

On Tue, Oct 29, 2024 at 05:28:49PM +0000, Lorenzo Stoakes wrote:
> On Tue, Oct 29, 2024 at 05:02:23PM +0000, Catalin Marinas wrote:
> > That's what I meant (untested, on top of -next as it has a MAP_HUGETLB
> > check in there). I don't think it's much worse than your proposal,
> > assuming that it works:
> 
> Right sorry misread. Yeah this is better, let me do a quick -v4 then!

Thanks!

> Cheers, sorry pretty tired at this stage, was looking at this all last
> night...

No worries. The way we handle MTE is pretty convoluted. Happy to
simplify it if we find a better way.

-- 
Catalin