Re: [PATCH] fork, vmalloc: KASAN-poison backing pages of vmapped stacks

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To: Dmitry Vyukov <dvyukov@xxxxxxxxxx>
Subject: Re: [PATCH] fork, vmalloc: KASAN-poison backing pages of vmapped stacks
From: Jann Horn <jannh@xxxxxxxxxx>
Date: Wed, 25 Jan 2023 10:30:38 +0100
Cc: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>, linux-mm@xxxxxxxxx, Uladzislau Rezki <urezki@xxxxxxxxx>, Christoph Hellwig <hch@xxxxxxxxxxxxx>, Andy Lutomirski <luto@xxxxxxxxxx>, linux-kernel@xxxxxxxxxxxxxxx, Andrey Ryabinin <ryabinin.a.a@xxxxxxxxx>, Alexander Potapenko <glider@xxxxxxxxxx>, Andrey Konovalov <andreyknvl@xxxxxxxxx>, Vincenzo Frascino <vincenzo.frascino@xxxxxxx>, kasan-dev@xxxxxxxxxxxxxxxx
In-reply-to: <CAG48ez32X1WKryh5ueQ0=Mn=PMKc6zunOYsMHhwMMMxKKaMfqA@mail.gmail.com>
References: <20230117163543.1049025-1-jannh@google.com> <CACT4Y+aQUeoWnWmbDG3O2_P75f=2u=VDRA1PjuTtbJsp5Xw2VA@mail.gmail.com> <CAG48ez32X1WKryh5ueQ0=Mn=PMKc6zunOYsMHhwMMMxKKaMfqA@mail.gmail.com>

On Wed, Jan 25, 2023 at 10:27 AM Jann Horn <jannh@xxxxxxxxxx> wrote:
> Oooh, actually, there is some CIFS code that does vmalloc_to_page()
> and talks about stack memory... I'll report that over on the other
> thread re CIFS weirdness.

Ah, no, nevermind. The corruptions were in ntfs3, not cifs...

References:
- [PATCH] fork, vmalloc: KASAN-poison backing pages of vmapped stacks
  - From: Jann Horn
- Re: [PATCH] fork, vmalloc: KASAN-poison backing pages of vmapped stacks
  - From: Dmitry Vyukov
- Re: [PATCH] fork, vmalloc: KASAN-poison backing pages of vmapped stacks
  - From: Jann Horn

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