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Diffstat (limited to 'arch')
-rw-r--r--arch/x86_64/mm/srat.c19
1 files changed, 15 insertions, 4 deletions
diff --git a/arch/x86_64/mm/srat.c b/arch/x86_64/mm/srat.c
index 3bd827f5611..cd25300726f 100644
--- a/arch/x86_64/mm/srat.c
+++ b/arch/x86_64/mm/srat.c
@@ -135,7 +135,12 @@ void __init
acpi_numa_processor_affinity_init(struct acpi_table_processor_affinity *pa)
{
int pxm, node;
- if (srat_disabled() || pa->flags.enabled == 0)
+ if (srat_disabled())
+ return;
+ if (pa->header.length != sizeof(struct acpi_table_processor_affinity)) { bad_srat();
+ return;
+ }
+ if (pa->flags.enabled == 0)
return;
pxm = pa->proximity_domain;
node = setup_node(pxm);
@@ -159,8 +164,16 @@ acpi_numa_memory_affinity_init(struct acpi_table_memory_affinity *ma)
int node, pxm;
int i;
- if (srat_disabled() || ma->flags.enabled == 0)
+ if (srat_disabled())
return;
+ if (ma->header.length != sizeof(struct acpi_table_memory_affinity)) {
+ bad_srat();
+ return;
+ }
+ if (ma->flags.enabled == 0)
+ return;
+ start = ma->base_addr_lo | ((u64)ma->base_addr_hi << 32);
+ end = start + (ma->length_lo | ((u64)ma->length_hi << 32));
pxm = ma->proximity_domain;
node = setup_node(pxm);
if (node < 0) {
@@ -168,8 +181,6 @@ acpi_numa_memory_affinity_init(struct acpi_table_memory_affinity *ma)
bad_srat();
return;
}
- start = ma->base_addr_lo | ((u64)ma->base_addr_hi << 32);
- end = start + (ma->length_lo | ((u64)ma->length_hi << 32));
/* It is fine to add this area to the nodes data it will be used later*/
if (ma->flags.hot_pluggable == 1)
printk(KERN_INFO "SRAT: hot plug zone found %lx - %lx \n",