Re: [PATCH 03/12] Revert "memcg: avoid dangling reference count increation failure."

[Kamezawa Hiroyuki]

(2013/04/08 15:33), Li Zefan wrote:
> From: Michal Hocko <mhocko@xxxxxxx>
> 
> This reverts commit e4715f01be697a3730c78f8ffffb595591d6a88c
> 
> mem_cgroup_put is hierarchy aware so mem_cgroup_put(memcg) already drops
> an additional reference from all parents so the additional
> mem_cgrroup_put(parent) potentially causes use-after-free.
> 
> Signed-off-by: Li Zefan <lizefan@xxxxxxxxxx>
> Signed-off-by: Michal Hocko <mhocko@xxxxxxx>

Acked-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@xxxxxxxxxxxxxx>



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