Re: [PATCH] xacct_add_tsk: fix pure theoretical ->mm use-after-free
From: Oleg Nesterov
Date: Mon Oct 30 2006 - 15:41:59 EST
On 10/30, Jay Lan wrote:
> Oleg Nesterov wrote:
> > Paranoid fix. The task can free its ->mm after the 'if (p->mm)' check.
> Why this change is necessary? This routine is indirectly invoked by
> taskstats_exit_send() routine called inside do_exit():
Not only, please note
path. This tsk is not 'current', it was found by find_task_by_pid(), and
it may exit at any time.
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