linux-kernel - Re: [PATCH 0/2] Fix slab-out-of-bounds Write in dbgfs_rm_context

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Message-Id: <20221103161403.115053-1-sj@kernel.org>
Date:   Thu,  3 Nov 2022 16:14:03 +0000
From:   SeongJae Park <sj@...nel.org>
To:     Andrew Morton <akpm@...ux-foundation.org>
Cc:     SeongJae Park <sj@...nel.org>, Shuah Khan <shuah@...nel.org>,
        damon@...ts.linux.dev, linux-mm@...ck.org,
        linux-kselftest@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 0/2] Fix slab-out-of-bounds Write in dbgfs_rm_context_write

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@...nel.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