In order to solve GPF could be caused by NULL-ptr deref or user memory access problem.
The fix is to decouple the cpuset/mempolicy intersection check from
oom_unkillable_task() and make sure cpuset/mempolicy intersection check is
only done in the global oom context.
需要回合下列补丁
ac311a14c682 oom: decouple mems_allowed from oom_unkillable_task
6ba749ee78ef mm, oom: remove redundant task_in_mem_cgroup() check
5eee7e1cdb97 mm, oom: refactor dump_tasks for memcg OOMs
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