On 05/12/2014 10:17 PM, Sasha Levin wrote:
I don't have an easy way to reproduce it as I only saw the bug once, but it happened when I started pressuring CPU hotplug paths by adding and removing CPUs often. Maybe it has anything to do with that?
As per the original report (http://article.gmane.org/gmane.linux.kernel/1643027)
I am able to reproduce the problem. The workload is (on S390 architecture): 2 processes onlining random cpus in a tight loop by using 'echo 1 > /sys/bus/cpu.../online' 2 processes offlining random cpus in a tight loop by using 'echo 0 > /sys/bus/cpu.../online' Otherwise, fairly idle system. load average: 5.82, 6.27, 6.27 The machine has 10 processors. The warning message some times hits within a few minutes on starting the workload. Other times it takes several hours. -- Jason J. Herne (jjhe...@linux.vnet.ibm.com) -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
