bcache: defensively handle format strings

Just to be safe, call the error reporting function with "%s" to avoid
any possible future format string leak.

Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Kent Overstreet <kmo@daterainc.com>

diff --git a/drivers/md/bcache/super.c b/drivers/md/bcache/super.c
index 70708ab..dec15cd 100644 (file)
--- a/drivers/md/bcache/super.c
+++ b/drivers/md/bcache/super.c
@@ -1670,7 +1670,7 @@ static void run_cache_set(struct cache_set *c)
 err:
        closure_sync(&cl);
        /* XXX: test this, it's broken */
-       bch_cache_set_error(c, err);
+       bch_cache_set_error(c, "%s", err);
 }
 
 static bool can_attach_cache(struct cache *ca, struct cache_set *c)