diff options
Diffstat (limited to 'drivers/acpi')
| -rw-r--r-- | drivers/acpi/acpica/tbxfroot.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/drivers/acpi/acpica/tbxfroot.c b/drivers/acpi/acpica/tbxfroot.c index 3d09e3f6bd43..ede2745838c8 100644 --- a/drivers/acpi/acpica/tbxfroot.c +++ b/drivers/acpi/acpica/tbxfroot.c @@ -139,7 +139,11 @@ acpi_find_root_pointer(acpi_physical_address *table_address) /* EBDA present? */ - if (physical_address > 0x400) { + /* + * Check that the EBDA pointer from memory is sane and does not point + * above valid low memory + */ + if (physical_address > 0x400 && physical_address < 0xA0000) { /* * 1b) Search EBDA paragraphs (EBDA is required to be a * minimum of 1K length) |