Some architectures like POWER can have a NUMA node_possible_map that
contains sparse entries. This causes memory corruption with openvswitch
since it allocates flow_cache with a multiple of num_possible_nodes() and
assumes the node variable returned by for_each_node will index into
flow->stats[node].
Use nr_node_ids to allocate a maximal sparse array instead of
num_possible_nodes().
The crash was noticed after 3af229f2 was applied as it changed the
node_possible_map to match node_online_map on boot.
Fixes: 3af229f207
Signed-off-by: Chris J Arges <[email protected]>
Acked-by: Pravin B Shelar <[email protected]>
Acked-by: Nishanth Aravamudan <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
bac541e463