On 06/14, Oleg Nesterov wrote: > > So to me this additional patch looks fine,
forgot to mention, but I think it needs another change in task_will_free_mem(), it should ignore kthreads (should not fail if we see a kthread which shares task->mm). And the comment you added on top of use_mm() looks misleading in any case. "Do not use copy_from_user from this context" looks simply wrong, why else do you need use_mm() if you are not going to do get/put_user? "because the address space might got reclaimed behind the back by the oom_reaper" doesn't look right too, copy_from_user() can also fail or read ZERO_PAGE() if mm owner does munmap/madvise. > but probably I missed something? Yes... Oleg.
