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From: Andrew Morton <akpm@linux-foundation.org>
To: Dima Koziuk <dmytrokoziuk68@gmail.com>
Cc: Alexander Potapenko <glider@google.com>,
	Marco Elver <elver@google.com>,
	Dmitry Vyukov <dvyukov@google.com>,
	kasan-dev@googlegroups.com, linux-mm@kvack.org,
	linux-kernel@vger.kernel.org
Subject: Re: [PATCH 1/2] mm: kmsan: fix iounmap metadata teardown
Date: Tue, 15 Sep 2026 15:35:42 -0700	[thread overview]
Message-ID: <20260915153542.3b9afbd00f7e6cea87a3350b@linux-foundation.org> (raw)
In-Reply-To: <20260915160207.2952-1-dmytrokoziuk68@gmail.com>

On Tue, 15 Sep 2026 19:02:06 +0300 Dima Koziuk <dmytrokoziuk68@gmail.com> wrote:

> While studying the code, I noticed that kmsan_iounmap_page_range() calls
> __vunmap_range_noflush(v_shadow, vmalloc_shadow(end)) inside its per-page
> loop, and does the same for origin. The first iteration therefore unmaps
> the entire metadata range, removing the PTEs for later pages before the
> loop can recover their backing pages.

Thanks.

AI review might have a found a couple of issues - please check?

https://sashiko.dev/#/patchset/20260915160207.2952-1-dmytrokoziuk68@gmail.com

  parent reply	other threads:[~2026-09-15 22:35 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-09-15 16:02 Dima Koziuk
2026-09-15 16:02 ` [PATCH 2/2] mm: kmsan: fix ioremap error cleanup Dima Koziuk
2026-09-15 22:35 ` Andrew Morton [this message]
2026-09-16  7:22   ` [PATCH 1/2] mm: kmsan: fix iounmap metadata teardown Dmytro Koziuk

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