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Date:   Wed, 31 Aug 2022 12:01:16 -0700
From:   Daniel Latypov <>
To:     Kees Cook <>
Cc:     Rasmus Villemoes <>,
        Vitor Massaru Iha <>,
        "Gustavo A. R. Silva" <>,
        Nick Desaulniers <>,
        kernel test robot <>,,
Subject: Re: [PATCH] overflow: Split up kunit tests for smaller stack frames

On Wed, Aug 31, 2022 at 11:11 AM Kees Cook <> wrote:
> Under some pathological 32-bit configs, the shift overflow KUnit tests
> create huge stack frames. Split up the function to avoid this,
> separating by rough shift overflow cases.
> Cc: Rasmus Villemoes <>
> Cc: Daniel Latypov <>
> Cc: Vitor Massaru Iha <>
> Cc: "Gustavo A. R. Silva" <>
> Cc: Nick Desaulniers <>
> Reported-by: kernel test robot <>
> Link:
> Signed-off-by: Kees Cook <>

Acked-by: Daniel Latypov <>

It's sad that we're forced to do this to eliminate such warnings, but
I like this organization a bit better, actually.

I wasn't able to reproduce the stack size warnings in the past, so I
haven't tried to do so here and can't give Tested-by/Reviewed-by.
But I did run the tests and they all still worked for me.

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