linux-kernel - [PATCH 28/32] ACPICA: acpi_madt_oem_data: Fix flexible array member definition

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Date:   Wed, 05 Apr 2023 15:56:06 +0200
From:   "Rafael J. Wysocki" <rjw@...ysocki.net>
To:     Linux ACPI <linux-acpi@...r.kernel.org>
Cc:     LKML <linux-kernel@...r.kernel.org>,
        Bob Moore <robert.moore@...el.com>,
        Kees Cook <kees@...flux.net>
Subject: [PATCH 28/32] ACPICA: acpi_madt_oem_data: Fix flexible array member definition

From: Kees Cook <kees@...flux.net>

ACPICA commit e7f6d8c1b7f79eb4b9b07f1bc09c549a2acbd6e8

Use ACPI_FLEX_ARRAY() helper to define flexible array member alone in a
struct. Fixes issue #812.

No binary changes appear in the .text nor .data sections.

Link: https://github.com/acpica/acpica/commit/e7f6d8c1
Signed-off-by: Bob Moore <robert.moore@...el.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@...el.com>
---
 include/acpi/actbl2.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/acpi/actbl2.h b/include/acpi/actbl2.h
index a51fd4090d27..0029336775a9 100644
--- a/include/acpi/actbl2.h
+++ b/include/acpi/actbl2.h
@@ -1274,7 +1274,7 @@ enum acpi_madt_rintc_version {
 /* 80: OEM data */
 
 struct acpi_madt_oem_data {
-	u8 oem_data[0];
+	ACPI_FLEX_ARRAY(u8, oem_data);
 };
 
 /*
-- 
2.35.3