From mboxrd@z Thu Jan  1 00:00:00 1970
Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201])
	(using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits))
	(No client certificate requested)
	by smtp.subspace.kernel.org (Postfix) with ESMTPS id B03127488
	for <damon@lists.linux.dev>; Thu,  3 Nov 2022 16:14:05 +0000 (UTC)
Received: by smtp.kernel.org (Postfix) with ESMTPSA id D08FBC433D6;
	Thu,  3 Nov 2022 16:14:04 +0000 (UTC)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org;
	s=k20201202; t=1667492045;
	bh=DLXNl9+4z7DavzpTnZ1L5p06FytfjA+p8ymjbqGgiS4=;
	h=From:To:Cc:Subject:Date:In-Reply-To:References:From;
	b=DXcfYRg4u0MvTij8P2JTHEeWP0/91Tl0qN/7YDQqapLGO0WNc04x6Jkw7yWvqfaKb
	 3drBgTSEo/41veHAOOT8o42eT20vFgQ7nTtnMclIqNYScaQcgwhUHYRD+ixpnh2ias
	 ehJCwbepwh221nd+ZWppOUnA6uqEVsz3yw/qvKjTrVhgGf+kj92u9yh8pqh9Q23l8T
	 LRazn2RIbIgH+fIpf+EMvN6lmCV80niZTe9G+VD7RNmZts8PzEcBHTDP2IsNW6lMMA
	 lI6tG2Rvu4dh+r+T27x5WvCFEi9kKOd4+DbSojCZ9jwubhXwX5DxUYm/tXTK0qv1xv
	 gGh6ay7EWDvIA==
From: SeongJae Park <sj@kernel.org>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: SeongJae Park <sj@kernel.org>,
	Shuah Khan <shuah@kernel.org>,
	damon@lists.linux.dev,
	linux-mm@kvack.org,
	linux-kselftest@vger.kernel.org,
	linux-kernel@vger.kernel.org
Subject: Re: [PATCH 0/2] Fix slab-out-of-bounds Write in dbgfs_rm_context_write
Date: Thu,  3 Nov 2022 16:14:03 +0000
Message-Id: <20221103161403.115053-1-sj@kernel.org>
X-Mailer: git-send-email 2.25.1
In-Reply-To: <20221031182554.7882-1-sj@kernel.org>
References: 
Precedence: bulk
X-Mailing-List: damon@lists.linux.dev
List-Id: <damon.lists.linux.dev>
List-Subscribe: <mailto:damon+subscribe@lists.linux.dev>
List-Unsubscribe: <mailto:damon+unsubscribe@lists.linux.dev>
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit

Hi Andrew,


May I ask you to merge this fix in your tree if you have no concern for this?
I think it deserves stable@.


Thanks,
SJ

On Mon, 31 Oct 2022 18:25:52 +0000 SeongJae Park <sj@kernel.org> wrote:

> This patchset is for fixing (patch 1) the syzbot-reported
> slab-out-of-bounds write in dbgfs_rm_context_write[1], and adding a
> selftest for the bug (patch 2).
> 
> [1] https://lore.kernel.org/damon/000000000000ede3ac05ec4abf8e@google.com/
> 
> SeongJae Park (2):
>   mm/damon/dbgfs: check if rm_contexts input is for a real context
>   selftests/damon: test non-context inputs to rm_contexts file
> 
>  mm/damon/dbgfs.c                              |  7 +++++++
>  tools/testing/selftests/damon/Makefile        |  1 +
>  .../damon/debugfs_rm_non_contexts.sh          | 19 +++++++++++++++++++
>  3 files changed, 27 insertions(+)
>  create mode 100755 tools/testing/selftests/damon/debugfs_rm_non_contexts.sh
> 
> -- 
> 2.25.1