Re: [PATCH] Fix check after use in kernel/exit.c

[Ingo Molnar]

* WANG Cong <xiyou.wangcong@xxxxxxxxx> wrote:

> > actually, i unapplied it again because the patch is wrong: 
> > mm_release() has side-effects for kernel threads such as the 
> > deactivate_mm() [which is important even if the user-mm is NULL]. If 
> > the NULL mm dereference can really trigger then it should be avoided 
> > within mm_release().
> 
> Do you mean that the NULL check should be moved into mm_release()?

yes - we need to run deactivate_mm() for kernel threads.

	Ingo
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