mbox series

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

Message ID 20221031182554.7882-1-sj@kernel.org
Headers show
Series Fix slab-out-of-bounds Write in dbgfs_rm_context_write | expand

Message

SeongJae Park Oct. 31, 2022, 6:25 p.m. UTC 
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

Comments

SeongJae Park Nov. 3, 2022, 4:14 p.m. UTC | #1 
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