>Number:         36476
>Category:       kern
>Synopsis:       HP ScanJet 4100C USB scanner crashes NetBSD
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    kern-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Tue Jun 12 15:30:00 +0000 2007
>Originator:     Andreas Gustafsson
>Release:        NetBSD 4.99.20 (-current as of June 6, 2007)
>Organization:
>Environment:
System: NetBSD gubuntu2.araneus.fi 4.99.20 NetBSD 4.99.20 (GUITAR), etc.
Architecture: i386
Machine: i386
>Description:

I'm trying to use a Hewlett Packard 4100C USB flatbed scanner with
a NetBSD-current system.  When I try to connect it, I sometimes
get the error message:

   uhub0: device problem, disabling port 2

and sometimes the following:

   uscanner0: Hewlett Packard 100C, rev 1.00/1.00, addr 2
   uscanner0: setting config no failed

(yes, it really says 100C, not 4100C).  In the latter case, if I
subsequently try to access the scanner in any way, even just opening
the uscanner0 device with "true </dev/uscanner0", I get a panic:

   usbd_open_pipe: iface=0x0 address=0x0 flags=0x1
   uvm_fault(0xcb02d620, 0, 1) -> 0xe
   kernel: supervisor trap page fault, code=0
   Stopped in pid 3485.1 (sh) at     netbsd:usbd_open_pipe_ival+0x83: movl 0x4 (%eax),%eax

Here is the USB controller information from dmesg:

   uhci0 at pci0 dev 31 function 4: Intel 82801BA USB Controller (rev. 0x01)
   uhci0: interrupting at ioapic0 pin 23 (irq 10)
   usb0 at uhci0: USB revision 1.0
   uhub0: Intel UHCI root hub, class 9/0, rev 1.00/1.00, addr 1
   uhub0: 2 ports with 2 removable, self powered

Dmesg output from a kernel built with with USB_DEBUG=10 and
UHUB_DEBUG=10, showing the scanner being attached at boot time up to
and including the the "uscanner0: setting config no failed" message,
is at <http://www.gson.org/netbsd/bugs/hp4100c/usbdebug.out>.

>How-To-Repeat:

See above.  I can provide serial console access to the machine for
anyone with a serious interest in looking into this.

>Fix:

Please.