5.4-stable review patch. If anyone has any objections, please let me know.
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From: Sebastian Ott sebott@redhat.com
[ Upstream commit 13edf7539211d8f7d0068ce3ed143005f1da3547 ]
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@redhat.com Link: https://patch.msgid.link/20250703124215.12522-1-sebott@redhat.com Signed-off-by: Rafael J. Wysocki rafael.j.wysocki@intel.com Signed-off-by: Sasha Levin sashal@kernel.org --- 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 c8338d627857..9cbf0593da05 100644 --- a/drivers/acpi/acpi_processor.c +++ b/drivers/acpi/acpi_processor.c @@ -228,7 +228,7 @@ 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;