[RFC PATCH v2 21/25] mm/memory_hotplug: VM_BUG if nid is too large.

[Cody P Schafer]

Signed-off-by: Cody P Schafer <cody@xxxxxxxxxxxxxxxxxx>
---
 mm/memory_hotplug.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c
index f5ea9b7..5fcd29e 100644
--- a/mm/memory_hotplug.c
+++ b/mm/memory_hotplug.c
@@ -1063,6 +1063,8 @@ int __mem_online_node(int nid)
 	pg_data_t *pgdat;
 	int ret;
 
+	VM_BUG_ON(nid >= nr_node_ids);
+
 	pgdat = hotadd_new_pgdat(nid, 0);
 	if (!pgdat)
 		return -ENOMEM;
-- 
1.8.2.1

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