Re: [RFC PATCH 4/4] Fix: sched/membarrier: p->mm->membarrier_state racy load (v2)

From: Oleg Nesterov
Date: Fri Sep 13 2019 - 12:04:23 EST

On 09/13, Mathieu Desnoyers wrote:
> membarrier_exec_mmap(), which seems to be affected by the same problem.

IIRC, in the last version it is called by exec_mmap() undef task_lock(),
so it should fine.