diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c
index 581e357e8406c7cdea04999bdd89a12762c55e89..8779893d74e5ca01a3c88ff6ac1b7676b3aec420 100644
--- a/fs/ext4/mballoc.c
+++ b/fs/ext4/mballoc.c
@@ -2892,8 +2892,10 @@ void ext4_process_freed_data(struct super_block *sb, tid_t commit_tid)
 				break;
 		}
 
-		if (discard_bio)
+		if (discard_bio) {
 			submit_bio_wait(discard_bio);
+			bio_put(discard_bio);
+		}
 	}
 
 	list_for_each_entry_safe(entry, tmp, &freed_data_list, efd_list)