diff --git a/drivers/md/bcache/btree.c b/drivers/md/bcache/btree.c
index 803af59..c096595 100644
--- a/drivers/md/bcache/btree.c
+++ b/drivers/md/bcache/btree.c
@@ -1617,7 +1617,7 @@ static bool fix_overlapping_extents(struct btree *b,
 {
        void subtract_dirty(struct bkey *k, uint64_t offset, int sectors)
        {
-               if (KEY_DIRTY(k))
+                if (KEY_DIRTY(k) && b->c->devices[KEY_INODE(k)])
                        bcache_dev_sectors_dirty_add(b->c, KEY_INODE(k),
                                                     offset, -sectors);
        }
@@ -1813,7 +1813,7 @@ static bool btree_insert_key(struct btree *b, struct btree_op *op,
 insert:        shift_keys(b, m, k);
 copy:  bkey_copy(m, k);
 merged:
-       if (KEY_DIRTY(k))
+       if (KEY_DIRTY(k) && b->c->devices[KEY_INODE(k)])
                bcache_dev_sectors_dirty_add(b->c, KEY_INODE(k),
                                             KEY_START(k), KEY_SIZE(k));