queue-6.19/edac-amd64-avoid-a-wformat-security-warning.patch

From da3ca8d595f5c4a3eac997402b3fd1225bc9b901 Mon Sep 17 00:00:00 2001
From: Sasha Levin <sashal@kernel.org>
Date: Thu, 4 Dec 2025 11:02:25 +0100
Subject: EDAC/amd64: Avoid a -Wformat-security warning

From: Arnd Bergmann <arnd@arndb.de>

[ Upstream commit c816ba1dcd931b9db8d66c71e1ae34ddcdbf968f ]

Using a variable as a format string causes a (default-disabled) warning:

  drivers/edac/amd64_edac.c: In function 'per_family_init':
  drivers/edac/amd64_edac.c:3914:17: error: format not a string literal and no format arguments [-Werror=format-security]
   3914 |                 scnprintf(pvt->ctl_name, sizeof(pvt->ctl_name), tmp_name);
        |                 ^~~~~~~~~

The code here is safe, but in order to enable the warning by default in the
future, change this instance to pass the name indirectly.

Fixes: e9abd990aefd ("EDAC/amd64: Generate ctl_name string at runtime")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Reviewed-by: Avadhut Naik <avadhut.naik@amd.com>
Reviewed-by: Qiuxu Zhuo <qiuxu.zhuo@intel.com>
Reviewed-by: Yazen Ghannam <yazen.ghannam@amd.com>
Link: https://patch.msgid.link/20251204100231.1034557-1-arnd@kernel.org
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/edac/amd64_edac.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/edac/amd64_edac.c b/drivers/edac/amd64_edac.c
index 2391f3469961a..63fca0ee2c23b 100644
--- a/drivers/edac/amd64_edac.c
+++ b/drivers/edac/amd64_edac.c
@@ -3911,7 +3911,7 @@ static int per_family_init(struct amd64_pvt *pvt)
 	}
 
 	if (tmp_name)
-		scnprintf(pvt->ctl_name, sizeof(pvt->ctl_name), tmp_name);
+		scnprintf(pvt->ctl_name, sizeof(pvt->ctl_name), "%s", tmp_name);
 	else
 		scnprintf(pvt->ctl_name, sizeof(pvt->ctl_name), "F%02Xh_M%02Xh",
 			  pvt->fam, pvt->model);
-- 
2.51.0