From: Marco Elver <elver@google.com>
To: Peng Liu <liupeng256@huawei.com>
Cc: brendanhiggins@google.com, glider@google.com, dvyukov@google.com,
akpm@linux-foundation.org, linux-kselftest@vger.kernel.org,
kunit-dev@googlegroups.com, linux-kernel@vger.kernel.org,
kasan-dev@googlegroups.com, linux-mm@kvack.org,
wangkefeng.wang@huawei.com
Subject: Re: [PATCH 0/3] kunit: fix a UAF bug and do some optimization
Date: Wed, 9 Mar 2022 07:12:08 +0100 [thread overview]
Message-ID: <CANpmjNMfkUSUEihTc2u_v6fOhHiyNOAOs2QROjCMEROMTbaxLQ@mail.gmail.com> (raw)
In-Reply-To: <20220309014705.1265861-1-liupeng256@huawei.com>
On Wed, 9 Mar 2022 at 02:29, 'Peng Liu' via kasan-dev
<kasan-dev@googlegroups.com> wrote:
>
> This series is to fix UAF when running kfence test case test_gfpzero,
> which is time costly. This UAF bug can be easily triggered by setting
> CONFIG_KFENCE_DYNAMIC_OBJECTS = 65535. Furthermore, some optimization
> for kunit tests has been done.
Yeah, I've observed this problem before, so thanks for fixing.
It's CONFIG_KFENCE_NUM_OBJECTS (not "DYNAMIC") - please fix in all patches.
> Peng Liu (3):
> kunit: fix UAF when run kfence test case test_gfpzero
> kunit: make kunit_test_timeout compatible with comment
> kfence: test: try to avoid test_gfpzero trigger rcu_stall
>
> lib/kunit/try-catch.c | 3 ++-
> mm/kfence/kfence_test.c | 3 ++-
> 2 files changed, 4 insertions(+), 2 deletions(-)
>
> --
> 2.18.0.huawei.25
>
> --
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next prev parent reply other threads:[~2022-03-09 6:12 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-03-09 1:47 Peng Liu
2022-03-09 1:47 ` [PATCH 1/3] kunit: fix UAF when run kfence test case test_gfpzero Peng Liu
2022-03-09 1:47 ` [PATCH 2/3] kunit: make kunit_test_timeout compatible with comment Peng Liu
2022-03-09 6:03 ` Marco Elver
2022-03-09 6:31 ` liupeng (DM)
2022-03-09 6:37 ` Marco Elver
2022-03-09 1:47 ` [PATCH 3/3] kfence: test: try to avoid test_gfpzero trigger rcu_stall Peng Liu
2022-03-09 21:39 ` Shuah Khan
2022-03-09 6:12 ` Marco Elver [this message]
2022-03-09 6:39 ` [PATCH 0/3] kunit: fix a UAF bug and do some optimization liupeng (DM)
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