diff options
Diffstat (limited to 'xen/drivers/passthrough/vtd/dmar.c')
| -rw-r--r-- | xen/drivers/passthrough/vtd/dmar.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/xen/drivers/passthrough/vtd/dmar.c b/xen/drivers/passthrough/vtd/dmar.c index 5ecade2657..0f117b1789 100644 --- a/xen/drivers/passthrough/vtd/dmar.c +++ b/xen/drivers/passthrough/vtd/dmar.c @@ -400,6 +400,9 @@ acpi_parse_one_drhd(struct acpi_dmar_entry_header *header) if ( (ret = acpi_dmar_check_length(header, sizeof(*drhd))) != 0 ) return ret; + if ( !drhd->address || !(drhd->address + 1) ) + return -ENODEV; + dmaru = xmalloc(struct acpi_drhd_unit); if ( !dmaru ) return -ENOMEM; |