I'm getting the following panic when I run the following

tar -cvf - . | compress | dd bs=64m of=/dev/sa0

   running with a blocksize of 2,4,8,16, or 32meg on the dd
command run to completion with no problems.

Fatal trap 12: page fault while in kernel mode
fault virtual address   = 0x293944
instruction pointer     = 0x8:0xc02a119f
stack pointer           = 0x10:0xd720dca4
frame pointer           = 0x10:0xd720dcb4
code segment            = base 0x0, limit 0xfffff, type = 0x1b
                        = DPL 0, pres 1, def32 1, gran 1
processor flags         = interrupt enabled, resume, IOPL = 0
current process         = 290 (tar)
trap number             = 12
panic: page fault

nm /boot/kernel/kernel | grep c02a11 | sort
c02a1100 T ufs_ihashinit
c02a1120 T ufs_ihashlookup
c02a1168 T ufs_ihashget
c02a11fc T ufs_ihashins

System is -current as of 11:30am EST, Mon Dec  4, 2000 (today :-)

dmesg output is included below. I'll compile up a kernel
with gdb tomorrow. (Yes, it replicates...)


Copyright (c) 1992-2000 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: Mon Dec  4 15:50:25 EST 2000
    [EMAIL PROTECTED]:/usr/src/sys/compile/FreeBSD
Timecounter "i8254"  frequency 1193182 Hz
Timecounter "TSC"  frequency 797416080 Hz
CPU: Pentium III/Pentium III Xeon/Celeron (797.42-MHz 686-class CPU)
  Origin = "GenuineIntel"  Id = 0x686  Stepping = 6

real memory  = 534933504 (522396K bytes)
avail memory = 516440064 (504336K bytes)
Preloaded elf kernel "kernel" at 0xc041a000.
ccd0-3: Concatenated disk drivers
Pentium Pro MTRR support enabled
md0: Malloc disk
Using $PIR table, 11 entries at 0xc00fbbe0
npx0: <math processor> on motherboard
npx0: INT 16 interface
pcib0: <Intel 82815 (i815 GMCH) Host To Hub bridge> at pcibus 0 on motherboard
pci0: <PCI bus> on pcib0
pci0: <Intel model 1132 VGA-compatible display device> at 2.0 irq 9
pcib1: <Intel 82801BA (ICH2) Hub to PCI bridge> at device 30.0 on pci0
pci1: <PCI bus> on pcib1
ahc0: <Adaptec 2940/DUAL Ultra SCSI adapter> port 0xec00-0xecff mem
0xfdfff000-0xfdffffff irq 9 at device 7.0 on pci1
aic7895: Wide Channel A, SCSI Id=7, 32/255 SCBs
ahc1: <Adaptec 2940/DUAL Ultra SCSI adapter> port 0xe800-0xe8ff mem
0xfdffe000-0xfdffefff irq 10 at device 7.1 on pci1
aic7895: Single Channel B, SCSI Id=7, 32/255 SCBs
amr0: <AMI MegaRAID> port 0xe480-0xe4ff irq 3 at device 9.0 on pci1
amr0: <Series 428> Firmware U.77, BIOS 1.47, 32MB RAM
xl0: <3Com 3c905C-TX Fast Etherlink XL> port 0xe400-0xe47f mem
0xfdffdc00-0xfdffdc7f irq 3 at device 12.0 on pci1
xl0: Ethernet address: 00:b0:d0:7d:7c:8e
miibus0: <MII bus> on xl0
xlphy0: <3c905C 10/100 internal PHY> on miibus0
xlphy0:  10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, auto
isab0: <Intel 82801BA (ICH2) PCI to LPC bridge> at device 31.0 on pci0
isa0: <ISA bus> on isab0
atapci0: <Intel ICH2 ATA100 controller> port 0xffa0-0xffaf at device 31.1 on
ata0: at 0x1f0 irq 14 on atapci0
ata1: at 0x170 irq 15 on atapci0
uhci0: <UHCI (generic) USB controller> port 0xff80-0xff9f irq 11 at device
31.2 on pci0
uhci0: (New UHCI DeviceId=0x24428086)
usb0: <UHCI (generic) USB controller> on uhci0
usb0: USB revision 1.0
uhub0: (0x24428086) UHCI root hub, class 9/0, rev 1.00/1.00, addr 1
uhub0: 2 ports with 2 removable, self powered
pci0: <Intel 82801BA (ICH2) SMBus controller> at 31.3 irq 10
pci0: <Intel 82801BA (ICH2) AC'97 Audio Controller> at 31.5 irq 10
fdc0: <NEC 72065B or clone> at port 0x3f0-0x3f5,0x3f7 irq 6 drq 2 on isa0
isa_dmainit(2, 1024) failed
fdc0: FIFO enabled, 8 bytes threshold
fd0: <1440-KB 3.5" drive> on fdc0 drive 0
atkbdc0: <Keyboard controller (i8042)> at port 0x60,0x64 on isa0
atkbd0: <AT Keyboard> flags 0x1 irq 1 on atkbdc0
kbd0 at atkbd0
psm0: <PS/2 Mouse> irq 12 on atkbdc0
psm0: model Generic PS/2 mouse, device ID 0
vga0: <Generic ISA VGA> at port 0x3c0-0x3df iomem 0xa0000-0xbffff on isa0
sc0: <System console> at flags 0x100 on isa0
sc0: VGA <16 virtual consoles, flags=0x300>
sio0 at port 0x3f8-0x3ff irq 4 flags 0x10 on isa0
sio0: type 16550A
sio1: configured irq 3 not in bitmap of probed irqs 0
ppc0: <Parallel port> at port 0x378-0x37f irq 7 on isa0
ppc0: SMC-like chipset (ECP/EPP/PS2/NIBBLE) in COMPATIBLE mode
ppc0: FIFO with 16/16/8 bytes threshold
plip0: <PLIP network interface> on ppbus0
lpt0: <Printer> on ppbus0
lpt0: Interrupt-driven port
ppi0: <Parallel I/O> on ppbus0
unknown: <PNP0501> can't assign resources
unknown: <PNP0400> can't assign resources
unknown: <PNP0700> can't assign resources
unknown: <PNP0f13> can't assign resources
unknown: <PNP0303> can't assign resources
ad0: 19092MB <WDC WD200BB-75AUA1> [38792/16/63] at ata0-master UDMA100
acd0: CDROM <Lite-On LTN483S 48x Max> at ata1-master using PIO4
Waiting 5 seconds for SCSI devices to settle
amrd0: <MegaRAID logical drive> on amr0
amrd0: 69112MB (141541376 sectors) RAID 0 (optimal)
sa0 at ahc0 bus 0 target 3 lun 0
sa0: <ECRIX VXA-1 2112> Removable Sequential Access SCSI-2 device 
sa0: 10.000MB/s transfers (10.000MHz, offset 15)
Mounting root from ufs:/dev/ad0s1a
cd0 at ahc1 bus 0 target 4 lun 0
cd0: <YAMAHA CRW8424S 1.0f> Removable CD-ROM SCSI-2 device 
cd0: 20.000MB/s transfers (20.000MHz, offset 15)
cd0: Attempt to query device size failed: NOT READY, Medium not present - tray

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