Commit fe76cd88 authored Mar 28, 2014 by Mike Snitzer

dm thin: fix dangling bio in process_deferred_bios error path



If unable to ensure_next_mapping() we must add the current bio, which
was removed from the @bios list via bio_list_pop, back to the
deferred_bios list before all the remaining @bios.

Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Acked-by: Joe Thornber <ejt@redhat.com>
Cc: stable@vger.kernel.org

parent a356e426

drivers/md/dm-thin.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -1392,9 +1392,9 @@ static void process_deferred_bios(struct pool *pool)
		*/
		if (ensure_next_mapping(pool)) {
		spin_lock_irqsave(&pool->lock, flags);
		bio_list_add(&pool->deferred_bios, bio);
		bio_list_merge(&pool->deferred_bios, &bios);
		spin_unlock_irqrestore(&pool->lock, flags);

		break;
		}