On Mon, Jan 14, 2013 at 3:39 AM, Alan Stern <stern@xxxxxxxxxxxxxxxxxxx> wrote: > On Sun, 13 Jan 2013, Oliver Neukum wrote: >> This is not a USB problem. You need to involve the SCSI people. >> khubd just stops working because disconnects are processed >> in its context and the removal deadlocks. > > The why whould building the deadline elevator as a module make any > difference? Or does it make a difference? Building elevator as module does make a difference: the system is broken. > Alex, if the elevator is made static instead, do you still see the same > behavior when the USB drive is removed? How can I make the elevator static? Or did you mean "built-in"? Or did you mean to ask if khubd hangs if the deadline is built in? In that case - no. The behavior is normal. Nothing hangs. > Also, are there any mounted filesystems on the drive when you unplug > it? No, no auto-mount. The whole of userspace init is attached, and I'm reasonably sure nothing of it mounts anything automatically. Nothing of udev, too.
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