Hi Juri, On 10/07/2014 11:43 AM, Juri Lelli wrote: > Hi Daniel, > > On 24/09/14 14:24, Daniel Wagner wrote: >> When a PI mutex is shared between an deadline task and normal task we >> might end up trying to replenish from the normal task. In this case neither >> dl_runtime, dl_period or dl_deadline are set. replenish_dl_entity() can't do >> anything useful. >> > > Is this same bug we have with rt_mutex_setprio or something different? > I'm sorry, but I don't remember anymore :/. It looks like a different > issue, though. There are two independent bugs but in both cases BUG_ON in enqueue_dl_entity() is triggered. The first one (this patch) is triggered by trying to use the sched_attr of the non deadline task. The second one is the double queuing. > Anyway, the callpath you talked about on IRC seems to make sense, does > what below fix the thing? I'll give it a spin. > Could you please point me again to where the > tests you are running are hosted, so that I can easily reproduce the > bug here? Sure. I reduced my original program to this: http://www.monom.org/rt/pthread_test.c If you let it run with 'pthread_test inherit' you should see the bugs eventually. cheers, daniel -- To unsubscribe from this list: send the line "unsubscribe linux-rt-users" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
