[PATCH] bcache: defensively handle format strings

[Kees Cook]

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@xxxxxxxxxxxx>
---
 drivers/md/bcache/super.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/md/bcache/super.c b/drivers/md/bcache/super.c
index 547c4c5..5be1de4 100644
--- a/drivers/md/bcache/super.c
+++ b/drivers/md/bcache/super.c
@@ -1644,7 +1644,7 @@ err_unlock_gc:
 err:
 	closure_sync(&op.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)
-- 
1.7.9.5


-- 
Kees Cook
Chrome OS Security
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