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>
git-mirror · May 28, 2009 · 0bc252f · 0bc252f
1 parent 7455aab
commit 0bc252f
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/arch/x86/kernel/amd_iommu_init.c b/arch/x86/kernel/amd_iommu_init.c
@@ -906,6 +906,8 @@ static int __init init_unity_map_range(struct ivmd_header *m)
 
 	switch (m->type) {
 	default:
+		kfree(e);
+		return 0;
 	case ACPI_IVMD_TYPE:
 		e->devid_start = e->devid_end = m->devid;
 		break;