We can call local_memory_node() before the zonelists are setup. In that case, first_zones_zonelist() will not set zone and the reference to zone->node will Oops. Catch this case, and, since we presumably running very early, just return that any node will do. Signed-off-by: Nishanth Aravamudan <nacc@xxxxxxxxxxxxxxxxxx> Cc: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> Cc: Michal Hocko <mhocko@xxxxxxx> Cc: Mel Gorman <mgorman@xxxxxxx> Cc: linux-mm@xxxxxxxxx Cc: linux-kernel@xxxxxxxxxxxxxxx Cc: Christoph Lameter <cl@xxxxxxxxx> Cc: David Rientjes <rientjes@xxxxxxxxxx> Cc: Joonsoo Kim <iamjoonsoo.kim@xxxxxxx> Cc: Ben Herrenschmidt <benh@xxxxxxxxxxxxxxxxxxx> Cc: Anton Blanchard <anton@xxxxxxxxx> diff --git a/mm/page_alloc.c b/mm/page_alloc.c index e3758a0..5de4337 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -3650,6 +3650,8 @@ int local_memory_node(int node) gfp_zone(GFP_KERNEL), NULL, &zone); + if (!zone) + return NUMA_NO_NODE; return zone->node; } #endif -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>