Hi All: mm/memcontrol.c: The function mem_cgroup_from_css() could return NULL, but some callers in this file checks the return value but directly dereference it, which seems potentially unsafe. Such callers include mem_cgroup_hierarchy_read(), mem_cgroup_hierarchy_write(), mem_cgroup_read_u64(), mem_cgroup_reset(), etc. -- Kind Regards, Yizhuo Zhai Computer Science, Graduate Student University of California, Riverside
