bcache: fix crash with incomplete cache set
Change-Id: I6abde52afe917633480caaf4e2518f42a816d886
diff --git a/drivers/md/bcache/super.c b/drivers/md/bcache/super.c
index 29dd1e8..72fbaf7 100644
--- a/drivers/md/bcache/super.c
+++ b/drivers/md/bcache/super.c
@@ -1284,6 +1284,9 @@
if (test_bit(CACHE_SET_STOPPING, &c->flags))
return -EINTR;
+ if (!test_bit(CACHE_SET_RUNNING, &c->flags))
+ return -EPERM;
+
u = uuid_find_empty(c);
if (!u) {
pr_err("Can't create volume, no room for UUID");
@@ -1706,6 +1709,7 @@
flash_devs_run(c);
+ set_bit(CACHE_SET_RUNNING, &c->flags);
return;
err:
closure_sync(&cl);