On Thu, 2015-11-19 at 00:23 -0800, Christoph Hellwig wrote: > It's pretty much guaranteed a block layer bug, most likely in the > merge bios to request infrastucture where we don't obey the merging > limits properly. > > Does either of you have a known good and first known bad kernel? Not me, I've only hit it one or two times. All I can say is I have hit it in 4.4-rc1. Laurent, can you narrow it down at all? cheers -- To unsubscribe from this list: send the line "unsubscribe linux-block" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html