From: Alexander Potapenko <glider@google.com>
To: Ethan Graham <ethan.w.s.graham@gmail.com>
Cc: ethangraham@google.com, andreyknvl@gmail.com, andy@kernel.org,
brauner@kernel.org, brendan.higgins@linux.dev,
davem@davemloft.net, davidgow@google.com, dhowells@redhat.com,
dvyukov@google.com, elver@google.com,
herbert@gondor.apana.org.au, ignat@cloudflare.com, jack@suse.cz,
jannh@google.com, johannes@sipsolutions.net,
kasan-dev@googlegroups.com, kees@kernel.org,
kunit-dev@googlegroups.com, linux-crypto@vger.kernel.org,
linux-kernel@vger.kernel.org, linux-mm@kvack.org,
lukas@wunner.de, rmoar@google.com, shuah@kernel.org,
sj@kernel.org, tarasmadan@google.com
Subject: Re: [PATCH v2 08/10] drivers/auxdisplay: add a KFuzzTest for parse_xy()
Date: Fri, 19 Sep 2025 17:07:14 +0200 [thread overview]
Message-ID: <CAG_fn=Xvkz_-UGuR8_4Jb_9HmwQn7dTHdJuDRe6usZX61CF0xw@mail.gmail.com> (raw)
In-Reply-To: <20250919145750.3448393-9-ethan.w.s.graham@gmail.com>
On Fri, Sep 19, 2025 at 4:58 PM Ethan Graham <ethan.w.s.graham@gmail.com> wrote:
>
> From: Ethan Graham <ethangraham@google.com>
>
> Add a KFuzzTest fuzzer for the parse_xy() function, located in a new
> file under /drivers/auxdisplay/tests.
>
> To validate the correctness and effectiveness of this KFuzzTest target,
> a bug was injected into parse_xy() like so:
>
> drivers/auxdisplay/charlcd.c:179
> - s = p;
> + s = p + 1;
>
> Although a simple off-by-one bug, it requires a specific input sequence
> in order to trigger it, thus demonstrating the power of pairing
> KFuzzTest with a coverage-guided fuzzer like syzkaller.
>
> Signed-off-by: Ethan Graham <ethangraham@google.com>
Acked-by: Alexander Potapenko <glider@google.com>
next prev parent reply other threads:[~2025-09-19 15:07 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-09-19 14:57 [PATCH v2 0/10] KFuzzTest: a new kernel fuzzing framework Ethan Graham
2025-09-19 14:57 ` [PATCH v2 01/10] mm/kasan: implement kasan_poison_range Ethan Graham
2025-09-23 16:46 ` Andrey Konovalov
2025-09-19 14:57 ` [PATCH v2 02/10] kfuzztest: add user-facing API and data structures Ethan Graham
2025-09-19 15:05 ` Alexander Potapenko
2025-09-24 8:44 ` Johannes Berg
2025-09-19 14:57 ` [PATCH v2 03/10] kfuzztest: implement core module and input processing Ethan Graham
2025-09-19 15:05 ` Alexander Potapenko
2025-09-19 14:57 ` [PATCH v2 04/10] tools: add kfuzztest-bridge utility Ethan Graham
2025-09-19 15:05 ` Alexander Potapenko
2025-09-19 14:57 ` [PATCH v2 05/10] kfuzztest: add ReST documentation Ethan Graham
2025-09-19 14:57 ` [PATCH v2 06/10] kfuzztest: add KFuzzTest sample fuzz targets Ethan Graham
2025-09-19 14:57 ` [PATCH v2 07/10] crypto: implement KFuzzTest targets for PKCS7 and RSA parsing Ethan Graham
2025-09-19 14:57 ` [PATCH v2 08/10] drivers/auxdisplay: add a KFuzzTest for parse_xy() Ethan Graham
2025-09-19 15:07 ` Alexander Potapenko [this message]
2025-09-20 10:53 ` Andy Shevchenko
2025-09-20 12:08 ` Alexander Potapenko
2025-09-20 12:47 ` Lukas Wunner
2025-09-21 18:25 ` Andy Shevchenko
2025-09-24 9:28 ` kernel test robot
2025-09-19 14:57 ` [PATCH v2 09/10] fs/binfmt_script: add KFuzzTest target for load_script Ethan Graham
2025-09-19 15:07 ` Alexander Potapenko
2025-09-19 19:19 ` Kees Cook
2025-09-19 14:57 ` [PATCH v2 10/10] MAINTAINERS: add maintainer information for KFuzzTest Ethan Graham
2025-09-24 8:32 ` SeongJae Park
2025-09-19 15:04 ` [PATCH v2 0/10] KFuzzTest: a new kernel fuzzing framework Alexander Potapenko
2025-09-24 12:52 ` Johannes Berg
2025-09-25 8:35 ` Ethan Graham
2025-10-24 8:37 ` Johannes Berg
2025-10-28 17:38 ` Alexander Potapenko
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