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Date:      Sun, 26 Jan 2003 16:35:44 +0100 (CET)
From:      Friedemann Becker <friedemann.becker@student.uni-tuebingen.de>
To:        FreeBSD-gnats-submit@FreeBSD.org
Subject:   kern/47512: bash in gdb triggers kernel panic
Message-ID:  <200301261535.h0QFZih7052237@jet.informatik.uni-tuebingen.de>

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>Number:         47512
>Category:       kern
>Synopsis:       bash in gdb triggers kernel panic
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Sun Jan 26 07:40:00 PST 2003
>Closed-Date:
>Last-Modified:
>Originator:     Friedemann Becker
>Release:        FreeBSD 5.0-CURRENT i386
>Organization:
none
>Environment:
System: FreeBSD chasey.wg 5.0-CURRENT FreeBSD 5.0-CURRENT #0: Sat Jan 25 02:34:33 CET 2003 root@bitch.wg:/usr/obj/usr/src/sys/GENERIC i386


>Description:
	when i start bash in gdb and do a ls, the kernel panics with the following message:

	panic: blockable sleep lock (sleep mutex) sellck @ /usr/src/sys/kern/sys_generic.c:1191
	Debugger:("panic")
	Stopped at Debugger+0x45: xchgl %ebx, in_Debugger.0

	I'm using bash-2.05b.004,
	GENERIC kernel

>How-To-Repeat:
	pkg_add -r bash2  # if necessary
	gdb bash
	run
	ls
>Fix:
	none yet

--- GENERIC begins here ---
#
# GENERIC -- Generic kernel configuration file for FreeBSD/i386
#
# For more information on this file, please read the handbook section on
# Kernel Configuration Files:
#
#    http://www.FreeBSD.org/doc/en_US.ISO8859-1/books/handbook/kernelconfig-config.html
#
# The handbook is also available locally in /usr/share/doc/handbook
# if you've installed the doc distribution, otherwise always see the
# FreeBSD World Wide Web server (http://www.FreeBSD.org/) for the
# latest information.
#
# An exhaustive list of options and more detailed explanations of the
# device lines is also present in the ../../conf/NOTES and NOTES files. 
# If you are in doubt as to the purpose or necessity of a line, check first 
# in NOTES.
#
# $FreeBSD: src/sys/i386/conf/GENERIC,v 1.372 2003/01/16 00:21:52 sam Exp $

machine		i386
cpu		I486_CPU
cpu		I586_CPU
cpu		I686_CPU
ident		GENERIC
maxusers	0

#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 	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 root device, requires NFSCLIENT
options 	MSDOSFS			#MSDOS Filesystem
options 	CD9660			#ISO 9660 Filesystem
options 	PROCFS			#Process filesystem (requires PSEUDOFS)
options 	PSEUDOFS		#Pseudo-filesystem framework
options 	COMPAT_43		#Compatible with BSD 4.3 [KEEP THIS!]
options 	COMPAT_FREEBSD4		#Compatible with FreeBSD4
options 	SCSI_DELAY=15000	#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 	AHC_REG_PRETTY_PRINT	# Print register bitfields in debug
					# output.  Adds ~128k to driver.
options 	AHD_REG_PRETTY_PRINT	# Print register bitfields in debug
					# output.  Adds ~215k to driver.

# Debugging for use in -current
options 	DDB			#Enable the kernel debugger
options 	INVARIANTS		#Enable calls of extra sanity checking
options 	INVARIANT_SUPPORT	#Extra sanity checks of internal structures, required by INVARIANTS
options 	WITNESS			#Enable checks to detect deadlocks and cycles
options 	WITNESS_SKIPSPIN	#Don't run witness on spinlocks for speed

# To make an SMP kernel, the next two are needed
#options 	SMP			# Symmetric MultiProcessor Kernel
#options 	APIC_IO			# Symmetric (APIC) I/O

device		isa
device		eisa
device		pci

# Floppy drives
device		fdc

# ATA and ATAPI devices
device		ata
device		atadisk			# ATA disk 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		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

# RAID controllers interfaced to the SCSI subsystem
device		asr		# DPT SmartRAID V, VI and Adaptec SCSI RAID
device		ciss		# Compaq Smart RAID 5*
device		dpt		# DPT Smartcache III, IV - See NOTES for options!
device		iir		# Intel Integrated RAID
device		mly		# Mylex AcceleRAID/eXtremeRAID

# SCSI peripherals
device		scbus		# SCSI bus (required)
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)

# RAID controllers
device		aac		# Adaptec FSA RAID
device		aacp		# SCSI passthrough for aac (requires CAM)
device		amr		# AMI MegaRAID
device		ida		# Compaq Smart RAID
device		mlx		# Mylex DAC960 family
device		pst		# Promise Supertrak SX6000
device		twe		# 3ware ATA RAID

# atkbdc0 controls both the keyboard and the PS/2 mouse
device		atkbdc		# AT keyboard controller
device		atkbd		# AT keyboard
device		psm		# PS/2 mouse

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

# Floating point support - do not disable.
device		npx

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

# PCCARD (PCMCIA) support
# Pcmcia and cardbus bridge support
device		cbb			# cardbus (yenta) bridge
#device		pcic			# ExCA ISA and PCI bridges
device		pccard			# PC Card (16-bit) bus
device		cardbus			# CardBus (32-bit) bus

# 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


# PCI Ethernet NICs.
device		de		# DEC/Intel DC21x4x (``Tulip'')
device		em		# Intel PRO/1000 adapter Gigabit 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		dc		# DEC/Intel 21143 and various workalikes
device		fxp		# Intel EtherExpress PRO/100B (82557, 82558)
device		pcn		# AMD Am79C97x PCI 10/100 (precedence over 'lnc')
device		rl		# RealTek 8129/8139
device		sf		# Adaptec AIC-6915 (``Starfire'')
device		sis		# Silicon Integrated Systems SiS 900/SiS 7016
device		ste		# Sundance ST201 (D-Link DFE-550TX)
device		tl		# Texas Instruments ThunderLAN
device		tx		# SMC EtherPower II (83c170 ``EPIC'')
device		vr		# VIA Rhine, Rhine II
device		wb		# Winbond W89C840F
device		xl		# 3Com 3c90x (``Boomerang'', ``Cyclone'')
device		bge		# Broadcom BCM570xx Gigabit Ethernet

# 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		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

# Wireless NIC cards
device		wlan		# 802.11 support
device		an		# Aironet 4500/4800 802.11 wireless NICs. 
device		awi		# BayStack 660 and others
device		wi		# WaveLAN/Intersil/Symbol 802.11 wireless NICs.
#device		wl		# Older non 802.11 Wavelan wireless NIC.

# Pseudo devices - the number indicates how many units to allocate.
device		random		# Entropy device
device		loop		# Network loopback
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)

# The `bpf' device enables the Berkeley Packet Filter.
# Be aware of the administrative consequences of enabling this!
device		bpf		# Berkeley packet filter

# USB support
device		uhci		# UHCI PCI->USB interface
device		ohci		# OHCI PCI->USB interface
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		urio		# Diamond Rio 500 MP3 player
device		uscanner	# Scanners
# USB Ethernet, requires mii
device		aue		# ADMtek USB ethernet
device		cue		# CATC USB ethernet
device		kue		# Kawasaki LSI USB ethernet
--- GENERIC ends here ---

--- dmesg.boot begins here ---
Copyright (c) 1992-2003 The FreeBSD Project.
Copyright (c) 1979, 1980, 1983, 1986, 1988, 1989, 1991, 1992, 1993, 1994
	The Regents of the University of California. All rights reserved.
FreeBSD 5.0-CURRENT #0: Sat Jan 25 02:34:33 CET 2003
    root@bitch.wg:/usr/obj/usr/src/sys/GENERIC
Preloaded elf kernel "/boot/kernel/kernel" at 0xc0626000.
Preloaded elf module "/boot/kernel/acpi.ko" at 0xc06260a8.
Timecounter "i8254"  frequency 1193182 Hz
Timecounter "TSC"  frequency 807194566 Hz
CPU: AMD Athlon(tm) Processor (807.19-MHz 686-class CPU)
  Origin = "AuthenticAMD"  Id = 0x642  Stepping = 2
  Features=0x183f9ff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,MMX,FXSR>
  AMD Features=0xc0440000<RSVD,AMIE,DSP,3DNow!>
real memory  = 268353536 (255 MB)
avail memory = 254066688 (242 MB)
Initializing GEOMetry subsystem
Pentium Pro MTRR support enabled
npx0: <math processor> on motherboard
npx0: INT 16 interface
acpi0: <ASUS   A7V     > on motherboard
    ACPI-0625: *** Info: GPE Block0 defined as GPE0 to GPE15
Using $PIR table, 9 entries at 0xc00f1750
acpi0: power button is handled as a fixed feature programming model.
Timecounter "ACPI-fast"  frequency 3579545 Hz
acpi_timer0: <24-bit timer at 3.579545MHz> port 0xe408-0xe40b on acpi0
acpi_cpu0: <CPU> on acpi0
acpi_button0: <Power Button> on acpi0
pcib0: <ACPI Host-PCI bridge> port 0xcf8-0xcff on acpi0
pci0: <ACPI PCI bus> on pcib0
agp0: <VIA 82C8363 (Apollo KT133A) host to PCI bridge> mem 0xe6000000-0xe7ffffff at device 0.0 on pci0
pcib1: <PCI-PCI bridge> at device 1.0 on pci0
pci1: <PCI bus> on pcib1
pci1: <display, VGA> at device 0.0 (no driver attached)
isab0: <PCI-ISA bridge> at device 4.0 on pci0
isa0: <ISA bus> on isab0
atapci0: <VIA 82C686 ATA66 controller> port 0xd800-0xd80f at device 4.1 on pci0
ata0: at 0x1f0 irq 14 on atapci0
ata1: at 0x170 irq 15 on atapci0
uhci0: <VIA 83C572 USB controller> port 0xd000-0xd01f irq 9 at device 4.3 on pci0
usb0: <VIA 83C572 USB controller> on uhci0
usb0: USB revision 1.0
uhub0: VIA UHCI root hub, class 9/0, rev 1.00/1.00, addr 1
uhub0: 2 ports with 2 removable, self powered
uhub0: port error, restarting port 1
uhub0: port error, giving up port 1
uhub0: port error, restarting port 2
uhub0: port error, giving up port 2
uhub1: ALCOR Generic USB Hub, class 9/0, rev 1.10/1.00, addr 2
uhub1: 4 ports with 4 removable, self powered
pci0: <bridge, PCI-unknown> at device 4.4 (no driver attached)
pci0: <network> at device 9.0 (no driver attached)
pci0: <display, VGA> at device 10.0 (no driver attached)
pci0: <multimedia, audio> at device 11.0 (no driver attached)
rl0: <RealTek 8139 10/100BaseTX> port 0x9800-0x98ff mem 0xdd800000-0xdd8000ff irq 11 at device 12.0 on pci0
rl0: Realtek 8139B detected. Warning, this may be unstable in autoselect mode
rl0: Ethernet address: 00:e0:7d:8b:46:01
miibus0: <MII bus> on rl0
rlphy0: <RealTek internal media interface> on miibus0
rlphy0:  10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, auto
sym0: <810a> port 0x9400-0x94ff mem 0xdd000000-0xdd0000ff irq 9 at device 13.0 on pci0
sym0: No NVRAM, ID 7, Fast-10, SE, parity checking
atapci1: <Promise ATA100 controller> port 0x7800-0x783f,0x8000-0x8003,0x8400-0x8407,0x8800-0x8803,0x9000-0x9007 mem 0xdc800000-0xdc81ffff irq 10 at device 17.0 on pci0
ata2: at 0x9000 on atapci1
ata3: at 0x8400 on atapci1
fdc0: <Enhanced floppy controller (i82077, NE72065 or clone)> port 0x3f7,0x3f2-0x3f5 irq 6 drq 2 on acpi0
fdc0: FIFO enabled, 8 bytes threshold
fd0: <1440-KB 3.5" drive> on fdc0 drive 0
ppc0 port 0x778-0x77b,0x378-0x37f irq 7 drq 3 on acpi0
ppc0: SMC-like chipset (ECP/EPP/PS2/NIBBLE) in COMPATIBLE mode
ppc0: FIFO with 16/16/8 bytes threshold
ppbus0: IEEE1284 device found /NIBBLE/ECP
Probing for PnP devices on ppbus0:
ppbus0: <Hewlett-Packard HP LaserJet 1100.1.0> PRINTER MLC,PCL,PJL
plip0: <PLIP network interface> on ppbus0
lpt0: <Printer> on ppbus0
lpt0: Interrupt-driven port
ppi0: <Parallel I/O> on ppbus0
sio0 port 0x3f8-0x3ff irq 4 on acpi0
sio0: type 16550A
sio1 port 0x2f8-0x2ff irq 3 on acpi0
sio1: type 16550A
atkbdc0: <Keyboard controller (i8042)> port 0x64,0x60 irq 1 on acpi0
atkbd0: <AT Keyboard> flags 0x1 irq 1 on atkbdc0
kbd0 at atkbd0
psm0: <PS/2 Mouse> irq 12 on atkbdc0
psm0: model IntelliMouse Explorer, device ID 4
orm0: <Option ROMs> at iomem 0xcc000-0xce7ff,0xc0000-0xc9fff on isa0
pmtimer0 on isa0
sc0: <System console> at flags 0x100 on isa0
sc0: VGA <16 virtual consoles, flags=0x300>
vga0: <Generic ISA VGA> at port 0x3c0-0x3df iomem 0xa0000-0xbffff on isa0
Timecounters tick every 10.000 msec
acpi_cpu: throttling enabled, 16 steps (100% to 6.2%), currently 100.0%
ata1-slave: timeout waiting for interrupt
ata1-slave: ATA identify failed
ad1: 9671MB <IBM-DTTA-351010> [19650/16/63] at ata0-slave UDMA33
ad4: 76319MB <ST380021A> [155061/16/63] at ata2-master UDMA100
Waiting 15 seconds for SCSI devices to settle
Mounting root from ufs:/dev/ad1s1a
cd0 at sym0 bus 0 target 3 lun 0
cd0: <PLEXTOR CD-ROM PX-20TS 1.01> Removable CD-ROM SCSI-2 device 
cd0: 10.000MB/s transfers (10.000MHz, offset 8)
cd0: Attempt to query device size failed: NOT READY, Medium not present
WARNING: / was not properly dismounted
lock order reversal
 1st 0xc2731068 process lock (process lock) @ /usr/src/sys/kern/kern_descrip.c:2104
 2nd 0xc2729734 filedesc structure (filedesc structure) @ /usr/src/sys/kern/kern_descrip.c:2111
WARNING: /build was not properly dismounted
WARNING: /tmp was not properly dismounted
/tmp: mount pending error: blocks 4 files 2
/tmp: superblock summary recomputed
WARNING: /usr was not properly dismounted
/usr: mount pending error: blocks 20 files 2
/usr: superblock summary recomputed
WARNING: /var was not properly dismounted
/var: mount pending error: blocks 80 files 20
/var: superblock summary recomputed
--- dmesg.boot ends here ---


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

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