On 04/10/2014 12:58 PM, Andreas Reis wrote: > That patch appears to work in preventing the crashes, judged on one > repeated appearance of the bug. > > dmesg had the usual > [ 215.229903] usb 4-2: usb_disable_lpm called, do nothing > [ 215.336941] usb 4-2: reset SuperSpeed USB device number 3 using > xhci_hcd > [ 215.350296] xhci_hcd 0000:00:14.0: xHCI xhci_drop_endpoint called > with disabled ep ffff880427b829c0 > [ 215.350305] xhci_hcd 0000:00:14.0: xHCI xhci_drop_endpoint called > with disabled ep ffff880427b82a08 > [ 215.350621] usb 4-2: usb_enable_lpm called, do nothing > > repeated five times, followed by one > [ 282.795801] sd 8:0:0:0: Device offlined - not ready after error > recovery > > and then as often as something tried to read from it: > [ 295.585472] sd 8:0:0:0: rejecting I/O to offline device > > The stick could then be properly un- and remounted (the latter if it > had been physically replugged) without issue — for the bug to > reoccur after one to three minutes. I tried this three times, no > dmesg difference except the ep addresses varied on two of that. > Was this just that patch you've tested with or the entire patch series? If the latter, Alan, is this the expected outcome? I would've thought the error recover should _not_ run into offlining devices here, but rather the device should be recovered eventually. Andreas, can you test with the entire patch series and enable 'scsi_logging_level -s -E 5' prior to running the tests? THX. Cheers, Hannes -- Dr. Hannes Reinecke zSeries & Storage hare@xxxxxxx +49 911 74053 688 SUSE LINUX Products GmbH, Maxfeldstr. 5, 90409 Nürnberg GF: J. Hawn, J. Guild, F. Imendörffer, HRB 16746 (AG Nürnberg) -- 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
