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Date:   Wed, 23 Mar 2022 08:19:33 -0700
From:   Guenter Roeck <linux@...ck-us.net>
To:     Kees Cook <keescook@...omium.org>
Cc:     David Gow <davidgow@...gle.com>,
        Rasmus Villemoes <linux@...musvillemoes.dk>,
        Nick Desaulniers <ndesaulniers@...gle.com>,
        Vitor Massaru Iha <vitor@...saru.org>,
        Daniel Latypov <dlatypov@...gle.com>,
        Nathan Chancellor <nathan@...nel.org>,
        Arnd Bergmann <arnd@...db.de>,
        "Gustavo A. R. Silva" <gustavoars@...nel.org>,
        linux-kernel@...r.kernel.org,
        KUnit Development <kunit-dev@...glegroups.com>,
        linux-hardening@...r.kernel.org
Subject: Re: [PATCH v2] lib: overflow: Convert to Kunit

Hi,

On Wed, Feb 23, 2022 at 09:48:25PM -0800, Kees Cook wrote:
> Convert overflow unit tests to KUnit, for better integration into the
> kernel self test framework. Includes a rename of test_overflow.c to
> overflow_kunit.c, and CONFIG_TEST_OVERFLOW to CONFIG_OVERFLOW_KUNIT_TEST.
> 

This patch results in lots of test build failures
due to large frame sizes.

Building i386:allyesconfig ... failed
--------------
Error log:
lib/overflow_kunit.c: In function 'overflow_size_helpers_test':
lib/overflow_kunit.c:644:1: error: the frame size of 2480 bytes is larger than 2048 bytes

Building i386:allmodconfig ... failed
--------------
Error log:
lib/overflow_kunit.c: In function 'overflow_size_helpers_test':
lib/overflow_kunit.c:644:1: error: the frame size of 2480 bytes is larger than 2048 bytes

Building mips:allmodconfig ... failed
--------------
Error log:
lib/overflow_kunit.c: In function 'overflow_size_helpers_test':
lib/overflow_kunit.c:644:1: error: the frame size of 2864 bytes is larger than 2048 bytes

Building powerpc:allmodconfig ... failed
--------------
Error log:
lib/overflow_kunit.c: In function 'overflow_size_helpers_test':
lib/overflow_kunit.c:644:1: error: the frame size of 3904 bytes is larger than 2048 bytes

Guenter

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