On Fri, May 27, 2016 at 01:36:29PM -0400, Johannes Weiner wrote: > On Mon, May 23, 2016 at 07:02:10PM +0300, Vladimir Davydov wrote: > > mem_cgroup_oom may be invoked multiple times while a process is handling > > a page fault, in which case current->memcg_in_oom will be overwritten > > leaking the previously taken css reference. > > There is a task_in_memcg_oom() check before calling mem_cgroup_oom(). > > How can this happen?
Oops, I overlooked that check. Scratch this patch then. Sorry for the noise.
