Re: [PATCH 3/8] arm: Fix possible race on task->mm

[Oleg Nesterov]

On 02/07, Anton Vorontsov wrote:
>
> Checking for task->mm is dangerous as ->mm might disappear (exit_mm()
> assigns NULL under task_lock(), so tasklist lock is not enough).
>
> We can't use get_task_mm()/mmput() pair as mmput() might sleep,

Yes, but

> so let's take the task lock while we care about its mm.

it seems that this needs find_lock_task_mm() too ?

the same for the rest patches in this series.

Oleg.

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