On Wed, Dec 11, 2013 at 11:03:09AM -0500, Alan Stern wrote: > On Tue, 10 Dec 2013, Sarah Sharp wrote: > > On 3.13-rc1, the btrfs partion from the disconnected USB device > > continues to be listed as mounted. Yanking the cable produces some > > additional oops messages. It also produced a couple hard-hangs. > > Unfortunately, I didn't capture the dmesg during the hard-hangs, so I > > can't tell for sure which driver is to blame (uas, btrfs, or xhci). > > Does this happen with usb-storage instead of uas? > > What about with ehci-hcd instead of xhci-hcd? > > And just to be exotic, what about with dummy-hcd and the uas or > g_mass_storage gadget driver? I can't reproduce the hard-hangs (with xhci and uas), but I did manage to reproduce a bug in uas where the disconnect function hangs, and hangs the khubd thread as well. This happens even with the btrfs partition wiped from the drive, so it's not a btrfs issue. I'll send a separate bug report to Hans. Sarah Sharp -- To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
