30 lines
1.0 KiB
Diff
30 lines
1.0 KiB
Diff
From: Josh Boyer <jwboyer@redhat.com>
|
|
Date: Wed, 5 Apr 2017 17:40:31 +0100
|
|
Subject: [55/62] acpi: Ignore acpi_rsdp kernel param when the kernel has been
|
|
locked down
|
|
Origin: https://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs.git/commit?id=1e915addf2f56a29d84dfc899017a926de9c0264
|
|
|
|
This option allows userspace to pass the RSDP address to the kernel, which
|
|
makes it possible for a user to circumvent any restrictions imposed on
|
|
loading modules. Ignore the option when the kernel is locked down.
|
|
|
|
Signed-off-by: Josh Boyer <jwboyer@redhat.com>
|
|
Signed-off-by: David Howells <dhowells@redhat.com>
|
|
---
|
|
drivers/acpi/osl.c | 2 +-
|
|
1 file changed, 1 insertion(+), 1 deletion(-)
|
|
|
|
diff --git a/drivers/acpi/osl.c b/drivers/acpi/osl.c
|
|
index db78d353bab1..d4d4ba348451 100644
|
|
--- a/drivers/acpi/osl.c
|
|
+++ b/drivers/acpi/osl.c
|
|
@@ -192,7 +192,7 @@ acpi_physical_address __init acpi_os_get_root_pointer(void)
|
|
acpi_physical_address pa = 0;
|
|
|
|
#ifdef CONFIG_KEXEC
|
|
- if (acpi_rsdp)
|
|
+ if (acpi_rsdp && !kernel_is_locked_down())
|
|
return acpi_rsdp;
|
|
#endif
|
|
|