Luo Meng 342cfd8426 dm clone: Fix UAF in clone_dtr() ...

commit e4b5957c6f749a501c464f92792f1c8e26b61a94 upstream.

Dm_clone also has the same UAF problem when dm_resume()
and dm_destroy() are concurrent.

Therefore, cancelling timer again in clone_dtr().

Cc: stable@vger.kernel.org
Fixes: 7431b7835f ("dm: add clone target")
Signed-off-by: Luo Meng <luomeng12@huawei.com>
Signed-off-by: Mike Snitzer <snitzer@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2023-01-14 10:16:32 +01:00

55 KiB

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