On Thu, Dec 31, 2015 at 09:56:28PM -0500, Tejun Heo wrote: > task_struct has a cluster of unsigned bitfields. Some are updated > under scheduler locks while others are updated only by the task > itself. Currently, the two classes of bitfields aren't distinguished > and end up on the same word which can lead to clobbering when there > are simultaneous read-modify-write attempts. While difficult to prove > definitely, it's likely that the resulting inconsistency led to low > frqeuency failures such as wrong memcg_may_oom state or loadavg > underflow due to clobbered sched_contributes_to_load. Ping. -- tejun -- To unsubscribe from this list: send the line "unsubscribe cgroups" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
