On 01/21, Ingo Molnar wrote: > > * tip-bot for Oleg Nesterov <oleg@xxxxxxxxxx> wrote: > > > @@ -6127,7 +6133,7 @@ static void perf_event_exit_task_context(struct task_struct *child, int ctxn) > > * scheduled, so we are now safe from rescheduling changing > > * our context. > > */ > > - child_ctx = child->perf_event_ctxp[ctxn]; > > + child_ctx = rcu_dereference(child->perf_event_ctxp[ctxn]); > > task_ctx_sched_out(child_ctx, EVENT_ALL); > > > > /* > > hm, this one's causing: > > [ 25.557579] =================================================== > [ 25.561361] [ INFO: suspicious rcu_dereference_check() usage. ] Oh, indeed, I am stupid! I added rcu_dereference() because it has smp_read_barrier_depends(), but I forgot about rcu_dereference_check(). I'll send the fix soon... Oleg. -- To unsubscribe from this list: send the line "unsubscribe linux-tip-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
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