>Number:         37369
>Category:       misc
>Synopsis:       Unmounting mass-storage causes umount to freeze
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    misc-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Mon Nov 12 17:35:00 +0000 2007
>Originator:     benny
>Release:        NetBSD-4.0_RC4
>Organization:
none
>Environment:
NetBSD maschine 4.0_RC4 NetBSD 4.0_RC4 (GENERIC.NOACPI) #0: Fri Nov  9 00:56:48 PST 2007  builds@wb34:/home/builds/ab/netbsd-4/i386/200711080002Z-obj/home/builds/ab/netbsd-4/src/sys/arch/i386/compile/GENERIC.NOACPI i386
>Description:
Unmounting an usb-stick from "umass0: MEDION Medion Flash XL V2.7D, rev 1.10/2.7d" (an usb-hub and card-reader) causes umount to freeze and error messages to appear in "dmesg". If the usb-stick is simply removed from the device, NetBSD freezes.
Data was correctly written to my usb-stick though.
>How-To-Repeat:
Do what I did in the problem description.
>Fix: