NetBSD Problem Report #41429

From dave@turbocat.net  Thu May 14 21:48:42 2009
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Date: Thu, 14 May 2009 23:48:38 +0200 (CEST)
From: dave@turbocat.de
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To: gnats-bugs@gnats.NetBSD.org
Subject: uhmodem dies on umass
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>Number:         41429
>Category:       kern
>Synopsis:       uhmodem dies on umass
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    kern-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Thu May 14 21:50:01 +0000 2009
>Last-Modified:  Sun May 17 18:13:29 +0000 2009
>Originator:     dave@turbocat.de
>Release:        NetBSD 5.0
>Organization:

>Environment:
dave@alix#uname -a
NetBSD alix 5.0 NetBSD 5.0 (GENERIC) #0: Sun Apr 26 18:50:08 UTC 2009  builds@b6.netbsd.org:/home/builds/ab/netbsd-5-0-RELEASE/i386/200904260229Z-obj/home/builds/ab/netbsd-5-0-RELEASE/src/sys/arch/i386/compile/GENERIC i386


System: NetBSD sip.turbocat.net 4.0 NetBSD 4.0 (GENERIC.HPS) #1: Sat May 10 14:45:31 CEST 2008 hselasky@hope.turbocat.net:/usr/src/sys/arch/amd64/compile/GENERIC.HPS amd64
Architecture: i386
Machine: i386
>Description:
attimer0: attached to pcppi0
uhub0 at usb0: vendor 0x1022 OHCI root hub, class 9/0, rev 1.00/1.00, addr 1
uhub1 at usb1: vendor 0x1022 EHCI root hub, class 9/0, rev 2.00/1.00, addr 1
uhub2 at uhub1 port 2: vendor 0x0409 product 0x005a, class 9/0, rev 2.00/1.00, addr 2
uhub2: single transaction translator
uhmodem0 at uhub2 port 1 configuration 1 interface 0
uhmodem0: HUAWEI Technologies HUAWEI Mobile, rev 1.10/0.00, addr 3
ucom0 at uhmodem0 portno 0: modem
ucom1 at uhmodem0 portno 1: alt#1
umass0 at uhub2 port 1 configuration 1 interface 2
umass0: HUAWEI Technologies HUAWEI Mobile, rev 1.10/0.00, addr 3
umass0: using SCSI over Bulk-Only
uvm_fault(0xc0b26cc0, 0, 1) -> 0xe
fatal page fault in supervisor mode
trap type 6 code 0 eip c07323c5 cs 8 eflags 10246 cr2 4 ilevel 0
kernel: supervisor trap page fault, code=0
Stopped in pid 0.27 (system) at netbsd:umass_attach+0x1a5:      cmpb    $0,0x4(%
eax)
db{0}> 


>How-To-Repeat:
use a USB hub on a alix2d2. The USB hub has a HUAWEI UMTS (3G) modem attached.
http://www.pcengines.ch/alix2d2.htm

>Fix:

	booting without the modem attached seems to work some times.
	adding it after boot worked after some tries

>Release-Note:

>Audit-Trail:

Responsible-Changed-From-To: gnats-admin->kern-bug-people
Responsible-Changed-By: dholland@NetBSD.org
Responsible-Changed-When: Sun, 17 May 2009 18:13:29 +0000
Responsible-Changed-Why:
rescue from the 'pending' queue (not clear why it got dropped there)


>Unformatted:

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