Re: [PATCH v3 5/6] sched/deadline/rtmutex: Fix unprotected PI access in enqueue_task_dl()

[Peter Zijlstra]

On Thu, Apr 14, 2016 at 07:37:06PM +0800, Xunlei Pang wrote:
> We access @pi_task's data without any lock in enqueue_task_dl(), though
> checked "dl_prio(pi_task->normal_prio)" condition, that's not enough.

The proper fix is to ensure that pi_task is guaranteed to be blocked.