linux-kernel - [PATCH 1/3] ACPI: BGRT: Mark bin_attribute as __ro_after

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <20241202-sysfs-const-bin_attr-acpi-v1-1-78f3b38d350d@weissschuh.net>
Date: Mon, 02 Dec 2024 20:04:09 +0100
From: Thomas Weißschuh <linux@...ssschuh.net>
To: "Rafael J. Wysocki" <rafael@...nel.org>, Len Brown <lenb@...nel.org>
Cc: linux-acpi@...r.kernel.org, linux-kernel@...r.kernel.org, 
 Thomas Weißschuh <linux@...ssschuh.net>
Subject: [PATCH 1/3] ACPI: BGRT: Mark bin_attribute as __ro_after_init

The attribute is only modified during __init phase.
Protect it against accidental or intentional modifications afterwards.

Signed-off-by: Thomas Weißschuh <linux@...ssschuh.net>
---
 drivers/acpi/bgrt.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/acpi/bgrt.c b/drivers/acpi/bgrt.c
index d1d9c9289087a1ca6b36e8497cb104bad3282737..88837c291a7630416f0ae3854d6d1a733a590961 100644
--- a/drivers/acpi/bgrt.c
+++ b/drivers/acpi/bgrt.c
@@ -29,7 +29,7 @@ BGRT_SHOW(type, image_type);
 BGRT_SHOW(xoffset, image_offset_x);
 BGRT_SHOW(yoffset, image_offset_y);

-static BIN_ATTR_SIMPLE_RO(image);
+static __ro_after_init BIN_ATTR_SIMPLE_RO(image);

 static struct attribute *bgrt_attributes[] = {
 	&bgrt_attr_version.attr,

-- 
2.47.1