Re: Potential NULL pointer deference in mm/memcontrol.c

On Wed 09-10-19 21:56:04, Yizhuo Zhai wrote: > Hi All: > mm/memcontrol.c: > The function mem_cgroup_from_css() could return NULL, but some callers This is the case only when the memory cgroup controller is disabled which is a boot time option. > in this file > checks the return value but directly

Potential NULL pointer deference in mm/memcontrol.c

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(), me