linux-kernel - [PATCH] ACPI: processor: fix acpi

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Message-ID: <20250703124215.12522-1-sebott@redhat.com>
Date: Thu,  3 Jul 2025 14:42:15 +0200
From: Sebastian Ott <sebott@...hat.com>
To: "Rafael J . Wysocki" <rafael@...nel.org>,
	Len Brown <lenb@...nel.org>
Cc: linux-acpi@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Sebastian Ott <sebott@...hat.com>
Subject: [PATCH] ACPI: processor: fix acpi_object initialization

Initialization of the local acpi_object in acpi_processor_get_info()
only sets the first 4 bytes to zero and is thus incomplete. This is
indicated by messages like:
	acpi ACPI0007:be: Invalid PBLK length [166288104]

Fix this by initializing all 16 bytes of the processor member of that
union.

Signed-off-by: Sebastian Ott <sebott@...hat.com>
---
 drivers/acpi/acpi_processor.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/acpi/acpi_processor.c b/drivers/acpi/acpi_processor.c
index 7cf6101cb4c7..2a99f5eb6962 100644
--- a/drivers/acpi/acpi_processor.c
+++ b/drivers/acpi/acpi_processor.c
@@ -275,7 +275,7 @@ static inline int acpi_processor_hotadd_init(struct acpi_processor *pr,
 
 static int acpi_processor_get_info(struct acpi_device *device)
 {
-	union acpi_object object = { 0 };
+	union acpi_object object = { .processor = { 0 } };
 	struct acpi_buffer buffer = { sizeof(union acpi_object), &object };
 	struct acpi_processor *pr = acpi_driver_data(device);
 	int device_declaration = 0;
-- 
2.50.0