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 <n...@linux.vnet.ibm.com>
Cc: Andrew Morton <a...@linux-foundation.org>
Cc: Michal Hocko <mho...@suse.cz>
Cc: Mel Gorman <mgor...@suse.de>
Cc: linux...@kvack.org
Cc: linux-ker...@vger.kernel.org
Cc: Christoph Lameter <c...@linux.com>
Cc: David Rientjes <rient...@google.com>
Cc: Joonsoo Kim <iamjoonsoo....@lge.com>
Cc: Ben Herrenschmidt <b...@kernel.crashing.org>
Cc: Anton Blanchard <an...@samba.org>
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
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