Commit 65ddf45a authored by Kent Overstreet's avatar Kent Overstreet
Browse files

bcache: Fix a null ptr deref in journal replay 



Signed-off-by: default avatarKent Overstreet <kmo@daterainc.com>
parent 4fa03402

drivers/md/bcache/journal.c

+5 −1
Original line number Diff line number Diff line
@@ -287,9 +287,13 @@ void bch_journal_mark(struct cache_set *c, struct list_head *list) 
		     k < bset_bkey_last(&i->j);

		     k = bkey_next(k)) {

			unsigned j;

			struct bucket *g;



			for (j = 0; j < KEY_PTRS(k); j++) {

				struct bucket *g = PTR_BUCKET(c, k, j);

				if (!ptr_available(c, k, j))

					continue;



				g = PTR_BUCKET(c, k, j);

				atomic_inc(&g->pin);



				if (g->prio == BTREE_PRIO &&