On Thu, Oct 02, 2014 at 12:36:55PM -0700, Paul E. McKenney wrote: > On Thu, Oct 02, 2014 at 01:55:15PM -0400, Dave Jones wrote: > > I just hit this on my box running 3.17rc7 > > It was followed by a userspace lockup. (Could still ping, and sysrq > > from the console, but even getty wasn't responding on the console). > > > > I was trying to reproduce another bug faster, and had ramped up the > > number of processes trinity to uses to 512. This didn't take long > > to fall out.. > > This might be related to an exchange I had with Tejun (CCed), where > the work queues were running all out, preventing any quiescent states > from happening. One fix under consideration is to add a quiescent state, > similar to the one in softirq handling.
Dave, can you please test whether the following patch makes a difference if the problem is reproducible? http://lkml.kernel.org/r/[email protected] Thanks. -- tejun -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
