[lkml]   [2012]   [Feb]   [8]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
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.


 \ /
  Last update: 2012-02-08 17:17    [from the cache]
©2003-2017 Jasper Spaans. hosted at Digital OceanAdvertise on this site