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Date:      Wed, 07 Jul 1999 19:16:18 -0700
From:      Scott Michel <scottm@CS.UCLA.EDU>
To:        freebsd-current@freebsd.org
Subject:   Panic in spec_strategy()
Message-ID:  <199907080216.TAA00329@mordred.cs.ucla.edu>

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-current kernel as of 1700 PST (or thereabouts):

spec_strategy+0x31:	movl	0x28(%eax), eax

Note: %eax = 0

Traceback:
--------------------------------------------------------------------------
spec_strategy(c3d27dd0,c3d27dac,c01cbe1,c3d27dd0,c3d27ddc) at spec_strategy+0x31
spec_vnoperate(c3d27dd0,c3d27ddc,c01d84bb,c3d27dd0,c1b24160) at spec_vnoperate+0x15
ufs_vnoperate(c3d27dd0,c1b24160,12,2,c00e0c40) at ufs_vnoperate+0x15
swstrategy(c1b241b0,e500,c0475c70,c3d27e2c,c01cc872) at swstrategy+0x14f
spec_strategy(c3d27e20) at spec_strategy+0x36
swap_pager_putpages(c4340c3c,c3d273ed8,2,0,c3d27e64) at swap_pager_putpages+0x03de
default_pager_putpages(c4340c3c,c3d273ed8,2,0,c3d27e64) at default_pager_putpages+0x17
vm_pageout_flush(c3d27ed8,2,0,c014aacd,ffffffff) at vm_pageout_flush+0x93
vm_pageout_clean(c046ccc40,80000000,c01d7868,a000,0) at vm_pageout_clean+0x1e5
vm_pageout_scan(80000000,0,0,c0331ff4,c01f5ebc) at vm_pageout_scan+0x44e
vm_pageout(0)
fork_trampoline...

My current config:
--------------------------------------------------------------------------
machine		"i386"
ident		MORDRED
maxusers	10

cpu		"I586_CPU"		# aka Pentium(tm)

options		PQ_HUGECACHE
options		CPU_WT_ALLOC
options		"NO_F00F_HACK"
options		"COMPAT_43"
options		USER_LDT
options		SYSVSHM
options		SYSVSEM
options		SYSVMSG
options		"MD5"
options		DDB
options		KTRACE			#kernel tracing
options		PERFMON
options		UCONSOLE
options		USERCONFIG		#boot -c editor
options		VISUAL_USERCONFIG	#visual boot -c editor

options		INET			#Internet communications protocols
pseudo-device	ether			#Generic Ethernet
pseudo-device	loop			#Network loopback device
pseudo-device	bpf		4	#Berkeley packet filter
pseudo-device	disc			#Discard device

options		TCP_COMPAT_42		#emulate 4.2BSD TCP bugs
options		MROUTING		# Multicast routing

options		FFS			#Fast filesystem
options		MFS			#Memory File System
options		NFS			#Network File System
options		NFS_NOSERVER
options		CD9660			#ISO 9660 filesystem
options		MSDOSFS			#MS DOS File System
options		PROCFS			#Process filesystem
options		FFS_ROOT		#FFS usable as root device
options		SOFTUPDATES

options		NSWAPDEV=2
options		QUOTA			#enable disk quotas
options		CD9660_ROOTDELAY=20

options		NFS_MINATTRTIMO=3	# VREG attrib cache timeout in sec
options		NFS_MAXATTRTIMO=60
options		NFS_MINDIRATTRTIMO=30	# VDIR attrib cache timeout in sec
options		NFS_MAXDIRATTRTIMO=60
options		NFS_GATHERDELAY=10	# Default write gather delay (msec)
options		NFS_UIDHASHSIZ=29	# Tune the size of nfssvc_sock with this
options		NFS_WDELAYHASHSIZ=16	# and with this
options		NFS_MUIDHASHSIZ=63	# Tune the size of nfsmount with this

options		"P1003_1B"
options		"_KPOSIX_PRIORITY_SCHEDULING"
options		_KPOSIX_VERSION=199309L

controller	scbus0	#base SCSI code
device		da0	#SCSI direct access devices (aka disks)
device		da1
device		cd0	#SCSI CD-ROMs
device		pass0	#CAM passthrough driver

device 		pt0 at scbus?

options		SCSI_DELAY=8000	# Be pessimistic about Joe SCSI device
options		CHANGER_MIN_BUSY_SECONDS=2
options		CHANGER_MAX_BUSY_SECONDS=10

pseudo-device	pty	16	#Pseudo ttys - can go as high as 256
pseudo-device	speaker		#Play IBM BASIC-style noises out your speaker
pseudo-device	gzip		#Exec gzipped a.out's

options		MSGBUF_SIZE=40960

controller	isa0
controller	pnp0

options 	VESA
pseudo-device	splash

device		sc0	at isa?
options		MAXCONS=8		# number of virtual consoles
options		SC_HISTORY_SIZE=200	# number of history buffer lines

device		npx0	at nexus? port IO_NPX iosiz 0x0 flags 0x0 irq 13

controller	fdc0	at isa? port "IO_FD1" irq 6 drq 2
disk		fd0	at fdc0 drive 0

controller	atkbdc0	at isa? port IO_KBD
device		atkbd0	at atkbdc? irq 1
device		psm0	at atkbdc? port IO_KBD conflicts irq 12

device		sio0	at isa? port "IO_COM1" flags 0x10 irq 4
device		sio1	at isa? port "IO_COM2" flags 0x10 irq 3

device		vga0	at isa? port ? conflicts

device ed0 at isa? port 0x240 irq 10 iomem 0xcc000

controller	snd0
device sb0      at isa? port 0x220 irq 5 drq 3
device sbxvi0   at isa? drq 7
device sbmidi0  at isa? port 0x330

controller	pci0
controller	ncr0

controller	ppbus0
device		lpt0	at ppbus?
controller	ppc0	at isa? port ? irq 7

options		CLK_CALIBRATION_LOOP
options		CLK_USE_TSC_CALIBRATION
options		COMPAT_LINUX
options		NBUF=512
options		NMBCLUSTERS=512
options		PANIC_REBOOT_WAIT_TIME=16
options		SHOW_BUSYBUFS	# List buffers that prevent root unmount

controller    uhci0
controller    usb0
device        ukbd0
device        ugen0


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