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Date:      Wed, 1 Mar 2006 00:49:31 +0700 (KRAT)
From:      Eugene Grosbein <eugen@grosbein.pp.ru>
To:        FreeBSD-gnats-submit@FreeBSD.org
Subject:   usb/93949: ugen(4)-related repeatable kernel panic in 6.1-PRERELEASE
Message-ID:  <200602281749.k1SHnVtf001083@grosbein.pp.ru>
Resent-Message-ID: <200602281800.k1SI0BE2079306@freefall.freebsd.org>

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>Number:         93949
>Category:       usb
>Synopsis:       ugen(4)-related repeatable kernel panic in 6.1-PRERELEASE
>Confidential:   no
>Severity:       critical
>Priority:       high
>Responsible:    freebsd-usb
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Tue Feb 28 18:00:11 GMT 2006
>Closed-Date:
>Last-Modified:
>Originator:     Eugene Grosbein
>Release:        FreeBSD 6.1-PRERELEASE i386
>Organization:
Svyaz Service JSC
>Environment:
System: FreeBSD grosbein.pp.ru 6.1-PRERELEASE FreeBSD 6.1-PRERELEASE #4: Sun Feb 19 19:52:24 KRAT 2006 eu@grosbein.pp.ru:/mnt/usr/local/obj6/usr/src/sys/DADV i386
	apcupsd-3.10.18_1 from ports and APC BackUPS CS BK500EI USB (uhid0)
	
>Description:
	6.1-PRERELEASE panices after open/detach of
	APC BackUPS CS BK500EI USB (ugen0).

	Here is kgdb backtrace:

Script started on Wed Mar  1 00:31:59 2006
[GDB will not be able to debug user-mode threads: /usr/lib/libthread_db.so: Undefined symbol "ps_pglobal_lookup"]
GNU gdb 6.1.1 [FreeBSD]
Copyright 2004 Free Software Foundation, Inc.
GDB is free software, covered by the GNU General Public License, and you are
welcome to change it and/or distribute copies of it under certain conditions.
Type "show copying" to see the conditions.
There is absolutely no warranty for GDB.  Type "show warranty" for details.
This GDB was configured as "i386-marcel-freebsd".

Unread portion of the kernel message buffer:


Fatal trap 12: page fault while in kernel mode
fault virtual address	= 0xc39662f4
fault code		= supervisor write, page not present
instruction pointer	= 0x20:0xc058da90
stack pointer	        = 0x28:0xdd044b80
frame pointer	        = 0x28:0xdd044b80
code segment		= base 0x0, limit 0xfffff, type 0x1b
			= DPL 0, pres 1, def32 1, gran 1
processor eflags	= interrupt enabled, resume, IOPL = 0
current process		= 625 (apcupsd)
trap number		= 12
panic: page fault
Uptime: 2m49s
Dumping 575 MB (2 chunks)
  chunk 0: 1MB (159 pages) ... ok
  chunk 1: 575MB (147184 pages) 559 543 527 511 495 479 463 447 431 415 399 383 367 351 335 319 303 287 271 255 239 223 207 191 175 159 143 127 111 95 79 63 47 31 15

#0  doadump () at pcpu.h:165
165		__asm __volatile("movl %%fs:0,%0" : "=r" (td));
(kgdb) bt
#0  doadump () at pcpu.h:165
#1  0xc05620b0 in boot (howto=260) at /usr/src/sys/kern/kern_shutdown.c:399
#2  0xc05623f9 in panic (fmt=0xc0771b57 "%s")
    at /usr/src/sys/kern/kern_shutdown.c:555
#3  0xc07424ec in trap_fatal (frame=0xdd044b40, eva=0)
    at /usr/src/sys/i386/i386/trap.c:836
#4  0xc07421c2 in trap_pfault (frame=0xdd044b40, usermode=0, eva=3281412852)
    at /usr/src/sys/i386/i386/trap.c:744
#5  0xc0741d7f in trap (frame=
      {tf_fs = -586940408, tf_es = -1067974616, tf_ds = -1065418712, tf_edi = -1011551872, tf_esi = 0, tf_ebp = -586921088, tf_isp = -586921108, tf_ebx = 35, tf_edx = -1011551872, tf_ecx = -1065417088, tf_eax = -1013554452, tf_trapno = 12, tf_err = 2, tf_eip = -1067918704, tf_cs = 32, tf_eflags = 590466, tf_esp = -586920752, tf_ss = -1067919632}) at /usr/src/sys/i386/i386/trap.c:434
#6  0xc072ee9a in calltrap () at /usr/src/sys/i386/i386/exception.s:139
#7  0xc058da90 in clear_selinfo_list (td=0xc3b4f180)
    at /usr/src/sys/kern/sys_generic.c:1078
#8  0xc058d6f0 in poll (td=0xc3b4f180, uap=0xdd044d04)
    at /usr/src/sys/kern/sys_generic.c:977
#9  0xc07428e0 in syscall (frame=
      {tf_fs = 59, tf_es = 59, tf_ds = 59, tf_edi = 672399684, tf_esi = 0, tf_ebp = 134676376, tf_isp = -586920604, tf_ebx = 672407692, tf_edx = -1077941152, tf_ecx = 9530, tf_eax = 209, tf_trapno = 12, tf_err = 2, tf_eip = 672126536, tf_cs = 51, tf_eflags = 515, tf_esp = 134676284, tf_ss = 59})
---Type <return> to continue, or q <return> to quit---
    at /usr/src/sys/i386/i386/trap.c:981
#10 0xc072eeef in Xint0x80_syscall ()
    at /usr/src/sys/i386/i386/exception.s:200
#11 0x00000033 in ?? ()
Previous frame inner to this frame (corrupt stack?)
(kgdb) frame 7
#7  0xc058da90 in clear_selinfo_list (td=0xc3b4f180)
    at /usr/src/sys/kern/sys_generic.c:1078
1078		TAILQ_FOREACH(si, &td->td_selq, si_thrlist)
(kgdb) p si
$1 = (struct selinfo *) 0xc39662ec
(kgdb) p *si
Cannot access memory at address 0xc39662ec
(kgdb) quit

Script done on Wed Mar  1 00:32:22 2006

	Here comes my kernel config:

machine		i386
cpu		I686_CPU
ident		DADV

# To statically compile in device wiring instead of /boot/device.hints
#hints		"GENERIC.hints"		# Default places to look for devices.

makeoptions	DEBUG=-g		# Build kernel with gdb(1) debug symbols

#options 	SCHED_ULE		# ULE scheduler
options 	SCHED_4BSD		# 4BSD scheduler
options 	PREEMPTION		# Enable kernel thread preemption
options 	INET			# InterNETworking
#options 	INET6			# IPv6 communications protocols
options 	FFS			# Berkeley Fast Filesystem
options 	SOFTUPDATES		# Enable FFS soft updates support
options 	UFS_ACL			# Support for access control lists
options 	UFS_DIRHASH		# Improve performance on big directories
#options 	MD_ROOT			# MD is a potential root device
options 	NFSCLIENT		# Network Filesystem Client
options 	NFSSERVER		# Network Filesystem Server
#options 	NFS_ROOT		# NFS usable as /, requires NFSCLIENT
options 	MSDOSFS			# MSDOS Filesystem
options 	LIBICONV
options 	MSDOSFS_ICONV

options 	CD9660			# ISO 9660 Filesystem
options 	PROCFS			# Process filesystem (requires PSEUDOFS)
options 	PSEUDOFS		# Pseudo-filesystem framework
options 	GEOM_GPT		# GUID Partition Tables.
options 	COMPAT_43		# Compatible with BSD 4.3 [KEEP THIS!]
options 	COMPAT_FREEBSD4		# Compatible with FreeBSD4
#options 	COMPAT_FREEBSD5		# Compatible with FreeBSD5
options 	SCSI_DELAY=5000		# Delay (in ms) before probing SCSI
options 	KTRACE			# ktrace(1) support
options 	SYSVSHM			# SYSV-style shared memory
options 	SYSVMSG			# SYSV-style message queues
options 	SYSVSEM			# SYSV-style semaphores
options 	_KPOSIX_PRIORITY_SCHEDULING # POSIX P1003_1B real-time extensions
options 	KBD_INSTALL_CDEV	# install a CDEV entry in /dev
options 	ADAPTIVE_GIANT		# Giant mutex is adaptive.
device		apic			# I/O APIC

# Bus support.
#device		eisa
device		pci

# Floppy drives
device		fdc

# ATA and ATAPI devices
device		ata
device		atadisk		# ATA disk drives
#device		ataraid		# ATA RAID drives
device		atapicd		# ATAPI CDROM drives
#device		atapifd		# ATAPI floppy drives
#device		atapist		# ATAPI tape drives
options 	ATA_STATIC_ID	# Static device numbering

# SCSI Controllers
#device		ahb		# EISA AHA1742 family
#device		ahc		# AHA2940 and onboard AIC7xxx devices
#device		ahd		# AHA39320/29320 and onboard AIC79xx devices
#device		amd		# AMD 53C974 (Tekram DC-390(T))
#device		isp		# Qlogic family
##device 	ispfw		# Firmware for QLogic HBAs- normally a module
#device		mpt		# LSI-Logic MPT-Fusion
##device		ncr		# NCR/Symbios Logic
#device		sym		# NCR/Symbios Logic (newer chipsets + those of `ncr')
#device		trm		# Tekram DC395U/UW/F DC315U adapters

#device		adv		# Advansys SCSI adapters
#device		adw		# Advansys wide SCSI adapters
#device		aha		# Adaptec 154x SCSI adapters
#device		aic		# Adaptec 15[012]x SCSI adapters, AIC-6[23]60.
#device		bt		# Buslogic/Mylex MultiMaster SCSI adapters

#device		ncv		# NCR 53C500
#device		nsp		# Workbit Ninja SCSI-3
#device		stg		# TMC 18C30/18C50

# SCSI peripherals
device		scbus		# SCSI bus (required for SCSI)
#device		ch		# SCSI media changers
device		da		# Direct Access (disks)
device		sa		# Sequential Access (tape etc)
device		cd		# CD
device		pass		# Passthrough device (direct SCSI access)
device		ses		# SCSI Environmental Services (and SAF-TE)

# atkbdc0 controls both the keyboard and the PS/2 mouse
device		atkbdc		# AT keyboard controller
device		atkbd		# AT keyboard
device		psm		# PS/2 mouse
options		KBD_RESETDELAY=500
options		KBD_MAXWAIT=10
options		KBD_MAXRETRY=10
options		PSM_DEBUG=2


device		vga		# VGA video card driver
device		splash		# Splash screen and screen saver support

# syscons is the default console driver, resembling an SCO console
device		sc

# Enable this for the pcvt (VT220 compatible) console driver
#device		vt
#options 	XSERVER		# support for X server on a vt console
#options 	FAT_CURSOR	# start with block cursor

device		agp		# support several AGP chipsets
device		drm
device		radeondrm

# Power management support (see NOTES for more options)
#device		apm
# Add suspend/resume support for the i8254.
device		pmtimer

# Serial (COM) ports
device		sio		# 8250, 16[45]50 based serial ports

# Parallel port
device		ppc
device		ppbus		# Parallel port bus (required)
device		lpt		# Printer
#device		plip		# TCP/IP over parallel
device		ppi		# Parallel port interface device
#device		vpo		# Requires scbus and da

# If you've got a "dumb" serial or parallel PCI card that is
# supported by the puc(4) glue driver, uncomment the following
# line to enable it (connects to the sio and/or ppc drivers):
#device		puc

# PCI Ethernet NICs.
#device		de		# DEC/Intel DC21x4x (``Tulip'')
#device		em		# Intel PRO/1000 adapter Gigabit Ethernet Card
#device		ixgb		# Intel PRO/10GbE Ethernet Card
#device		txp		# 3Com 3cR990 (``Typhoon'')
#device		vx		# 3Com 3c590, 3c595 (``Vortex'')

# PCI Ethernet NICs that use the common MII bus controller code.
# NOTE: Be sure to keep the 'device miibus' line in order to use these NICs!
device		miibus		# MII bus support
#device		bfe		# Broadcom BCM440x 10/100 Ethernet
#device		bge		# Broadcom BCM570xx Gigabit Ethernet
#device		dc		# DEC/Intel 21143 and various workalikes
device		fxp		# Intel EtherExpress PRO/100B (82557, 82558)
#device		lge		# Level 1 LXT1001 gigabit Ethernet
#device		nge		# NatSemi DP83820 gigabit Ethernet
#device		nve		# nVidia nForce MCP on-board Ethernet Networking
#device		pcn		# AMD Am79C97x PCI 10/100(precedence over 'lnc')
#device		re		# RealTek 8139C+/8169/8169S/8110S
#device		rl		# RealTek 8129/8139
#device		sf		# Adaptec AIC-6915 (``Starfire'')
#device		sis		# Silicon Integrated Systems SiS 900/SiS 7016
#device		sk		# SysKonnect SK-984x & SK-982x gigabit Ethernet
#device		ste		# Sundance ST201 (D-Link DFE-550TX)
#device		ti		# Alteon Networks Tigon I/II gigabit Ethernet
#device		tl		# Texas Instruments ThunderLAN
#device		tx		# SMC EtherPower II (83c170 ``EPIC'')
#device		vge		# VIA VT612x gigabit Ethernet
#device		vr		# VIA Rhine, Rhine II
#device		wb		# Winbond W89C840F
#device		xl		# 3Com 3c90x (``Boomerang'', ``Cyclone'')

# ISA Ethernet NICs.  pccard NICs included.
#device		cs		# Crystal Semiconductor CS89x0 NIC
# 'device ed' requires 'device miibus'
#device		ed		# NE[12]000, SMC Ultra, 3c503, DS8390 cards
#device		ex		# Intel EtherExpress Pro/10 and Pro/10+
device		ep		# Etherlink III based cards
#device		fe		# Fujitsu MB8696x based cards
#device		ie		# EtherExpress 8/16, 3C507, StarLAN 10 etc.
#device		lnc		# NE2100, NE32-VL Lance Ethernet cards
#device		sn		# SMC's 9000 series of Ethernet chips
#device		xe		# Xircom pccard Ethernet

# ISA devices that use the old ISA shims
#device		le

# Pseudo devices.
device		loop		# Network loopback
device		random		# Entropy device
device		ether		# Ethernet support
#device		sl		# Kernel SLIP
device		ppp		# Kernel PPP
device		tun		# Packet tunnel.
device		pty		# Pseudo-ttys (telnet etc)
device		md		# Memory "disks"
device		gif		# IPv6 and IPv4 tunneling
#device		faith		# IPv6-to-IPv4 relaying (translation)
device		tap			#Virtual Ethernet driver

# The `bpf' device enables the Berkeley Packet Filter.
# Be aware of the administrative consequences of enabling this!
# Note that 'bpf' is required for DHCP.
device		bpf		# Berkeley packet filter

# USB support
device		uhci		# UHCI PCI->USB interface
device		ohci		# OHCI PCI->USB interface
device		ehci		# EHCI PCI->USB interface (USB 2.0)
device		usb		# USB Bus (required)
#device		udbp		# USB Double Bulk Pipe devices
device		ugen		# Generic
device		uhid		# "Human Interface Devices"
#device		ukbd		# Keyboard
#device		ulpt		# Printer
device		umass		# Disks/Mass storage - Requires scbus and da
#device		ums		# Mouse
#device		ural		# Ralink Technology RT2500USB wireless NICs
#device		urio		# Diamond Rio 500 MP3 player
device		uscanner	# Scanners
# USB Ethernet, requires miibus
#device		aue		# ADMtek USB Ethernet
#device		axe		# ASIX Electronics USB Ethernet
#device		cdce		# Generic USB over Ethernet
#device		cue		# CATC USB Ethernet
#device		kue		# Kawasaki LSI USB Ethernet
#device		rue		# RealTek RTL8150 USB Ethernet

# FireWire support
device		firewire	# FireWire bus code
device		sbp		# SCSI over FireWire (Requires scbus and da)
device		fwe		# Ethernet over FireWire (non-standard!)

options		IPSEC
options		IPSEC_ESP
options		IPSEC_FILTERGIF
options		IPFIREWALL
options		IPFIREWALL_FORWARD
options		IPFIREWALL_FORWARD_EXTENDED
options		IPDIVERT
options		DUMMYNET

options 	NETGRAPH		# netgraph(4) system
options 	NETGRAPH_ETHER
options 	NETGRAPH_PPPOE
options 	NETGRAPH_SOCKET

device		sound
device		snd_mss

options		COMPAT_LINUX
options		LINPROCFS

>How-To-Repeat:

	This is 100% repeateable with mentioned BackUPS
	connected to USB port using original APC cable.

	1. Install apcupsd-3.10.18_1 from ports, configure it.
	Here comes my /usr/local/etc/apcupsd/apcupsd.conf

UPSNAME BackUPS CS 500
UPSCABLE usb
UPSTYPE usb
LOCKFILE /var/spool/lock
ONBATTERYDELAY 6
BATTERYLEVEL 5
MINUTES 1
TIMEOUT 0
ANNOY 300
ANNOYDELAY 60
NOLOGON disable
KILLDELAY 0
NETSERVER on
NISIP 127.0.0.1
NISPORT 3551
EVENTSFILE /var/log/apcupsd.events
EVENTSFILEMAX 100
UPSCLASS standalone
UPSMODE disable
STATTIME 600
STATFILE /var/log/apcupsd.status
LOGSTATS off
DATATIME 600

	2. Run usbd.
	3. Run apcupsd and test that it has opened ugen using apcaccess.
	4. Physically detach UPS from USB: unplug its control cable.
	A couple of seconds later a panic occures.

>Fix:

	Unknown for me.

>Release-Note:
>Audit-Trail:
>Unformatted:



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