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


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      Last update: 2012-02-08 17:17    [W:0.020 / U:0.032 seconds]
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