Dm_cache also has the same UAF problem when dm_resume() and dm_destroy() are concurrent.
Therefore, canceling timer again in destroy(). Fixes: c6b4fcbad044e (dm: add cache target) Signed-off-by: Luo Meng <[email protected]> --- drivers/md/dm-cache-target.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/md/dm-cache-target.c b/drivers/md/dm-cache-target.c index 54a8d5c9a44e..624a6335c832 100644 --- a/drivers/md/dm-cache-target.c +++ b/drivers/md/dm-cache-target.c @@ -1887,6 +1887,7 @@ static void destroy(struct cache *cache) if (cache->prison) dm_bio_prison_destroy_v2(cache->prison); + cancel_delayed_work_sync(&cache->waker); if (cache->wq) destroy_workqueue(cache->wq); -- 2.31.1 -- dm-devel mailing list [email protected] https://listman.redhat.com/mailman/listinfo/dm-devel
