From: Luo Meng luomeng12@huawei.com
commit f50cb2cbabd6c4a60add93d72451728f86e4791c upstream.
Dm_integrity also has the same UAF problem when dm_resume() and dm_destroy() are concurrent.
Therefore, cancelling timer again in dm_integrity_dtr().
Cc: stable@vger.kernel.org Fixes: 7eada909bfd7a ("dm: add integrity 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 --- drivers/md/dm-integrity.c | 2 ++ 1 file changed, 2 insertions(+)
--- a/drivers/md/dm-integrity.c +++ b/drivers/md/dm-integrity.c @@ -4388,6 +4388,8 @@ static void dm_integrity_dtr(struct dm_t BUG_ON(!RB_EMPTY_ROOT(&ic->in_progress)); BUG_ON(!list_empty(&ic->wait_list));
+ if (ic->mode == 'B') + cancel_delayed_work_sync(&ic->bitmap_flush_work); if (ic->metadata_wq) destroy_workqueue(ic->metadata_wq); if (ic->wait_wq)