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

[SeongJae Park <sj@kernel.org>]

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