[PATCH 2/2] mm, cma: use literal printf format string

[Arnd Bergmann <arnd@kernel.org>]

From: Arnd Bergmann <arnd@arndb.de>

Using a variable string as a printf format can be a security issue
that clang warns about when extra warnings are enabled:

mm/cma.c:239:37: error: format string is not a string literal (potentially insecure) [-Werror,-Wformat-security]
  239 |                 snprintf(cma->name, CMA_MAX_NAME, name);
      |                                                   ^~~~

This one does not appear to be a security issue since the string is
not user controlled, but it's better to avoid the warning.
Use "%s" as the format instead and just pass the name as the argument.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
 mm/cma.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/mm/cma.c b/mm/cma.c
index ef0206c0f16d..09322b8284bd 100644
--- a/mm/cma.c
+++ b/mm/cma.c
@@ -236,7 +236,7 @@ static int __init cma_new_area(const char *name, phys_addr_t size,
 	cma_area_count++;
 
 	if (name)
-		snprintf(cma->name, CMA_MAX_NAME, name);
+		snprintf(cma->name, CMA_MAX_NAME, "%s", name);
 	else
 		snprintf(cma->name, CMA_MAX_NAME,  "cma%d\n", cma_area_count);
 
-- 
2.39.5