linux-kernel - Re: [PATCH v2 RFC 6/7] kfuzztest: add KFuzzTest sample fuzz targets

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Message-ID: <CAG_fn=WJrdSr_6u770ke3TxyFimuMXXeTSQhsDR73POy4U8iug@mail.gmail.com>
Date: Thu, 4 Sep 2025 11:59:09 +0200
From: Alexander Potapenko <glider@...gle.com>
To: Ethan Graham <ethan.w.s.graham@...il.com>
Cc: ethangraham@...gle.com, andreyknvl@...il.com, brendan.higgins@...ux.dev, 
	davidgow@...gle.com, dvyukov@...gle.com, jannh@...gle.com, elver@...gle.com, 
	rmoar@...gle.com, shuah@...nel.org, tarasmadan@...gle.com, 
	kasan-dev@...glegroups.com, kunit-dev@...glegroups.com, 
	linux-kernel@...r.kernel.org, linux-mm@...ck.org, dhowells@...hat.com, 
	lukas@...ner.de, ignat@...udflare.com, herbert@...dor.apana.org.au, 
	davem@...emloft.net, linux-crypto@...r.kernel.org
Subject: Re: [PATCH v2 RFC 6/7] kfuzztest: add KFuzzTest sample fuzz targets

On Mon, Sep 1, 2025 at 6:43 PM Ethan Graham <ethan.w.s.graham@...il.com> wrote:
>
> From: Ethan Graham <ethangraham@...gle.com>
>
> Add two simple fuzz target samples to demonstrate the KFuzzTest API and
> provide basic self-tests for the framework.
>
> These examples showcase how a developer can define a fuzz target using
> the FUZZ_TEST(), constraint, and annotation macros, and serve as runtime
> sanity checks for the core logic. For example, they test that out-of-bounds
> memory accesses into poisoned padding regions are correctly detected in a
> KASAN build.
>
> These have been tested by writing syzkaller-generated inputs into their
> debugfs 'input' files and verifying that the correct KASAN reports were
> triggered.
>
> Signed-off-by: Ethan Graham <ethangraham@...gle.com>
Acked-by: Alexander Potapenko <glider@...gle.com>