Commit 1590a2e1 authored by Linus Torvalds's avatar Linus Torvalds
Browse files
Pull ACPI fixes from Rafael Wysocki:
 "Prevent bypassing kernel lockdown via the ACPI tables loading
  interface (Jason A. Donenfeld) and fix the handling of an ACPI sysfs
  attribute (Nathan Chancellor)"

* tag 'acpi-5.8-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  ACPI: sysfs: Fix pm_profile_attr type
  ACPI: configfs: Disallow loading ACPI tables when locked down
parents ed3e00e7 0f29c20b
Loading
Loading
Loading
Loading
+5 −1
Original line number Diff line number Diff line
@@ -11,6 +11,7 @@
#include <linux/module.h>
#include <linux/configfs.h>
#include <linux/acpi.h>
#include <linux/security.h>

#include "acpica/accommon.h"
#include "acpica/actables.h"
@@ -28,7 +29,10 @@ static ssize_t acpi_table_aml_write(struct config_item *cfg,
{
	const struct acpi_table_header *header = data;
	struct acpi_table *table;
	int ret;
	int ret = security_locked_down(LOCKDOWN_ACPI_TABLES);

	if (ret)
		return ret;

	table = container_of(cfg, struct acpi_table, cfg);

+2 −2
Original line number Diff line number Diff line
@@ -938,13 +938,13 @@ static void __exit interrupt_stats_exit(void)
}

static ssize_t
acpi_show_profile(struct device *dev, struct device_attribute *attr,
acpi_show_profile(struct kobject *kobj, struct kobj_attribute *attr,
		  char *buf)
{
	return sprintf(buf, "%d\n", acpi_gbl_FADT.preferred_profile);
}

static const struct device_attribute pm_profile_attr =
static const struct kobj_attribute pm_profile_attr =
	__ATTR(pm_profile, S_IRUGO, acpi_show_profile, NULL);

static ssize_t hotplug_enabled_show(struct kobject *kobj,