[PATCH] powerpc/xmon: avoid format string leaking to printk

[Kees Cook]

This makes sure format strings cannot leak into printk (the string has
already been correctly processed for format arguments).

Signed-off-by: Kees Cook <keescook at chromium.org>
---
 arch/powerpc/xmon/nonstdio.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/powerpc/xmon/nonstdio.c b/arch/powerpc/xmon/nonstdio.c
index bce3dcfe5058..c98748617896 100644
--- a/arch/powerpc/xmon/nonstdio.c
+++ b/arch/powerpc/xmon/nonstdio.c
@@ -122,7 +122,7 @@ void xmon_printf(const char *format, ...)
 
 	if (n && rc == 0) {
 		/* No udbg hooks, fallback to printk() - dangerous */
-		printk(xmon_outbuf);
+		printk("%s", xmon_outbuf);
 	}
 }
 
-- 
1.7.9.5


-- 
Kees Cook
Chrome OS Security