diff options
Diffstat (limited to 'drivers/acpi/acpica/rscalc.c')
| -rw-r--r-- | drivers/acpi/acpica/rscalc.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/acpi/acpica/rscalc.c b/drivers/acpi/acpica/rscalc.c index 7816d4eef04..72077fa1eea 100644 --- a/drivers/acpi/acpica/rscalc.c +++ b/drivers/acpi/acpica/rscalc.c @@ -202,6 +202,12 @@ acpi_rs_get_aml_length(struct acpi_resource * resource, acpi_size * size_needed) return_ACPI_STATUS(AE_AML_INVALID_RESOURCE_TYPE); } + /* Sanity check the length. It must not be zero, or we loop forever */ + + if (!resource->length) { + return_ACPI_STATUS(AE_AML_BAD_RESOURCE_LENGTH); + } + /* Get the base size of the (external stream) resource descriptor */ total_size = acpi_gbl_aml_resource_sizes[resource->type]; |