On 01/18/2012 07:01 AM, Sarah Sharp wrote: > The USB 3.0 card reader I have will stall every SCSI command while it is > empty, so it was only a matter of time before a TD was queued just > before the link TRB. That's why my box would always hang with the ring > expansion patchset and that device. < snip patch > Hi Sarah, While running your andiry-ring-expansion branch from today, I got the panic in the following screenshot: http://i44.tinypic.com/otkbco.jpg Unfortunately the first dump has scrolled partway offscreen, but the second dump seems similar, so maybe it will have the same info. I don't know if this is related to this particular patch or not. This happened while I was testing a device with the g_zero gadget using the testusb program on the host. It happened when I tried to run test 10. Without the ring expansion patches, test 10 always gave an allocation failure when I tried to run it. I'm don't know how reproducible this is. I rebooted and ran test 10 again, and that time there was no panic. There was a different problem, the test hung, so I am looking at that now. -- Paul -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html