From: Wenwei Tao <ww.tao0320@xxxxxxxxx>
The mem_cgroup_tree_per_node allocation might fail,
check that before continue the memcg init. Since it
is in the init phase, trigger the panic if that failure
happens.
Signed-off-by: Wenwei Tao <ww.tao0320@xxxxxxxxx>
---
mm/memcontrol.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index 925b431..6385c62 100644
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -5712,6 +5712,7 @@ static int __init mem_cgroup_init(void)
rtpn = kzalloc_node(sizeof(*rtpn), GFP_KERNEL,
node_online(node) ? node : NUMA_NO_NODE);
+ BUG_ON(!rtpn);
for (zone = 0; zone < MAX_NR_ZONES; zone++) {
struct mem_cgroup_tree_per_zone *rtpz;
--
1.8.3.1
--
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