amd-iommu: make sure only ivmd entries are parsed
The bug never triggered. But it should be fixed to protect against
broken ACPI tables in the future.
[ Impact: protect against broken ivrs acpi table ]
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
diff --git a/arch/x86/kernel/amd_iommu_init.c b/arch/x86/kernel/amd_iommu_init.c
index 53f93db..a3a2b98 100644
--- a/arch/x86/kernel/amd_iommu_init.c
+++ b/arch/x86/kernel/amd_iommu_init.c
@@ -906,6 +906,8 @@
switch (m->type) {
default:
+ kfree(e);
+ return 0;
case ACPI_IVMD_TYPE:
e->devid_start = e->devid_end = m->devid;
break;