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Date:      Sun, 29 Aug 2004 20:05:38 -0400
From:      "Andrew H. Derbyshire" <ahd@kew.com>
To:        <freebsd-current@freebsd.org>
Subject:   PCI SIO devices hog interrupts, cause lock order problems
Message-ID:  <012301c48e25$14924180$84cba8c0@hh.kew.com>

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Attached are two boot logs with sources as of today (Sunday 8/28/2004) =
with
both the standard GENERIC kernel configuration and the generic kernel
modified to include a single additional device, the PUC device.  The =
system
is a Dell GX300 Dual PIII/733 with PCI 3COM Ethernet, a 3COM internal =
modem,
and 29160 SCSI. =20

Basically, any PCI SIO device hogs its interrupt if the PUC device is =
not
also in the kernel, and this causes real problems for any environment =
like
mine where pulling the modem is not trivial.  Does the distributed =
GENERIC
kernel have room for the PUC device?  Are there side effects that PUC =
should
be excluded from GENERIC?

As a bonus, there appears to be a bug with kernel locking exposed by the
problem.  With the stock generic kernel, the XL device reports it =
couldn't
map the interrupt, and then a lock order reversal is reported.  (See the
attached log for the gory details).

Suggestions?

The machine is pure test mode now.  I can test either CVS updated source =
or
private patches.

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ahd@xena.hh.kew.com:/scratch/xena/obj/scratch/current/src/sys/GENERIC
WARNING: WITNESS option enabled, expect reduced performance.
Timecounter "i8254" frequency 1193182 Hz quality 0
CPU: Intel Pentium III (728.44-MHz 686-class CPU)
Origin =3D "GenuineIntel"  Id =3D 0x683  Stepping =3D 3
Features=3D0x383fbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE=
,MCA,CMOV,PAT,PSE36,MMX,FXSR,SSE>
real memory  =3D 1073340416 (1023 MB)
avail memory =3D 1040789504 (992 MB)
ACPI APIC Table: <DELL   GX300  >
FreeBSD/SMP: Multiprocessor System Detected: 2 CPUs
cpu0 (BSP): APIC ID:  0
cpu1 (AP): APIC ID:  1
ioapic0: Changing APIC ID to 2
ioapic0 <Version 2.0> irqs 0-23 on motherboard
npx0: [FAST]
npx0: <math processor> on motherboard
npx0: INT 16 interface
acpi0: <DELL GX300  > on motherboard
acpi0: Power Button (fixed)
Timecounter "ACPI-fast" frequency 3579545 Hz quality 1000
acpi_timer0: <24-bit timer at 3.579545MHz> port 0x808-0x80b on acpi0
cpu0: <ACPI CPU> on acpi0
cpu1: <ACPI CPU> on acpi0
pcib0: <ACPI Host-PCI bridge> port 0xcf8-0xcff on acpi0
pci0: <ACPI PCI bus> on pcib0
agp0: <Intel 82820 host to AGP bridge> mem 0xf0000000-0xf3ffffff 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)
pcib2: <ACPI PCI-PCI bridge> at device 30.0 on pci0
pci2: <ACPI PCI bus> on pcib2
sio0: configured irq 18 not in bitmap of probed irqs 0x80
sio0: port may not be enabled
sio0: <3COM PCI FaxModem> port 0xecf8-0xecff irq 18 at device 9.0 on =
pci2
sio0: moving to sio4
sio4: type 16550A
ahc0: <Adaptec 29160N Ultra160 SCSI adapter> port 0xe800-0xe8ff mem =
0xf8fff000-0xf8ffffff irq 19 at device 10.0 on pci2
ahc0: [GIANT-LOCKED]
aic7892: Ultra160 Wide Channel A, SCSI Id=3D7, 32/253 SCBs
pcib3: <PCI-PCI bridge> at device 11.0 on pci2
pci3: <PCI bus> on pcib3
ohci0: <NEC uPD 9210 USB controller> mem 0xfafff000-0xfaffffff irq 16 at =
device 8.0 on pci3
ohci0: [GIANT-LOCKED]
usb0: OHCI version 1.0
usb0: <NEC uPD 9210 USB controller> on ohci0
usb0: USB revision 1.0
uhub0: NEC OHCI root hub, class 9/0, rev 1.00/1.00, addr 1
uhub0: 3 ports with 3 removable, self powered
ohci1: <NEC uPD 9210 USB controller> mem 0xfaffe000-0xfaffefff irq 17 at =
device 8.1 on pci3
ohci1: [GIANT-LOCKED]
usb1: OHCI version 1.0
usb1: <NEC uPD 9210 USB controller> on ohci1
usb1: USB revision 1.0
uhub1: NEC OHCI root hub, class 9/0, rev 1.00/1.00, addr 1
uhub1: 2 ports with 2 removable, self powered
pci3: <serial bus, USB> at device 8.2 (no driver attached)
fwohci0: <Texas Instruments TSB43AB23> mem =
0xfaff8000-0xfaffbfff,0xfaffd000-0xfaffd7ff irq 16 at device 12.0 on =
pci3
fwohci0: [GIANT-LOCKED]
fwohci0: OHCI version 1.10 (ROM=3D1)
fwohci0: No. of Isochronous channels is 4.
fwohci0: EUI64 00:50:42:b5:c0:0c:f7:9d
fwohci0: Phy 1394a available S400, 3 ports.
fwohci0: Link S400, max_rec 2048 bytes.
firewire0: <IEEE1394(FireWire) bus> on fwohci0
fwe0: <Ethernet over FireWire> on firewire0
if_fwe0: Fake Ethernet address: 02:50:42:0c:f7:9d
fwe0: Ethernet address: 02:50:42:0c:f7:9d
sbp0: <SBP-2/SCSI over FireWire> on firewire0
fwohci0: Initiate bus reset
fwohci0: node_id=3D0xc800ffc0, gen=3D1, CYCLEMASTER mode
firewire0: 1 nodes, maxhop <=3D 0, cable IRM =3D 0 (me)
firewire0: bus manager 0 (me)
xl0: <3Com 3c905C-TX Fast Etherlink XL> port 0xec00-0xec7f mem =
0xf8ffec00-0xf8ffec7f irq 18 at device 12.0 on pci2
xl0: couldn't map interrupt
lock order reversal
1st 0xc24aa2dc xl0 (network driver) @ =
/scratch/current/src/sys/pci/if_xl.c:1695
2nd 0xc0ae0060 ACPI root bus (ACPI root bus) @ =
/scratch/current/src/sys/modules/acpi/acpi/../../../dev/acpica/acpi.c:841=

KDB: stack backtrace:
kdb_backtrace(c08b54f3,c0ae0060,c0ada063,c0ada063,c0ada468) at =
kdb_backtrace+0x2e
witness_checkorder(c0ae0060,9,c0ada468,349,0) at =
witness_checkorder+0x6a6
_sx_xlock(c0ae0060,c0ada468,349,c0c217b8,c068f5c0) at _sx_xlock+0x7e
acpi_release_resource(c22ee600,c23a2000,3,14,c23abe00) at =
acpi_release_resource+0x23
bus_generic_release_resource(c2293b80,c23a2000,3,14,c23abe00) at =
bus_generic_release_resource+0x82
resource_list_release(c23a3204,c23a3080,c23a2000,3,14) at =
resource_list_release+0x84
bus_generic_rl_release_resource(c23a3080,c23a2000,3,14,c23abe00) at =
bus_generic_rl_release_resource+0x86
bus_generic_release_resource(c23a2a80,c23a2000,3,14,c23abe00) at =
bus_generic_release_resource+0x82
resource_list_release(c23a3204,c23a2100,c23a2000,3,14) at =
resource_list_release+0x13b
bus_generic_rl_release_resource(c23a2100,c23a2000,3,14,c23abe00) at =
bus_generic_rl_release_resource+0x86
bus_release_resource(c23a2000,3,14,c23abe00,3) at =
bus_release_resource+0x7f
xl_detach(c23a2000,c08c55bc,c0c2198c,0,ffffffff) at xl_detach+0x189
xl_attach(c23a2000,c2339050,c08dd0d0,c23a2000,c23a2000) at =
xl_attach+0xfa1
device_attach(c23a2000,c23a2000,6,c22686c0,c23a2000) at =
device_attach+0x6a
device_probe_and_attach(c23a2000,c23a2a80,c0c21a3c,c0ac8e6c,c23a2100) at =
device_probe_and_attach+0xe1
bus_generic_attach(c23a2100,6,c22686c0,1,c0ac8bf4) at =
bus_generic_attach+0x28
acpi_pci_attach(c23a2100,c23a2100,c233adc0,c23a2100,c23a2100) at =
acpi_pci_attach+0xec
device_attach(c23a2100,c23a2100,2e697063,2e696370,c23a2100) at =
device_attach+0x6a
device_probe_and_attach(c23a2100,c23a3080,c0c21ac0,c0ac8fc2,c23a2a80) at =
device_probe_and_attach+0xe1
bus_generic_attach(c23a2a80,c23a2a80,c23a7570,2,c0ac8839) at =
bus_generic_attach+0x28
acpi_pcib_attach(c23a2a80,c23a7570,2,c23a2a80,c22686c0) at =
acpi_pcib_attach+0x14e
acpi_pcib_pci_attach(c23a2a80,c2370850,c08dd0d0,c23a2a80,c23a2a80) at =
acpi_pcib_pci_attach+0x88
device_attach(c23a2a80,c23a2a80,6,c2268800,c23a2a80) at =
device_attach+0x6a
device_probe_and_attach(c23a2a80,c2293b80,c0c21b74,c0ac8e6c,c23a3080) at =
device_probe_and_attach+0xe1
bus_generic_attach(c23a3080,6,c2268800,1,c0ac8bf4) at =
bus_generic_attach+0x28
acpi_pci_attach(c23a3080,c2372050,c08dd0d0,c23a3080,c23a3080) at =
acpi_pci_attach+0xec
device_attach(c23a3080,c23a3080,2e697063,2e696370,c23a3080) at =
device_attach+0x6a
device_probe_and_attach(c23a3080,c22ee600,c0c21bf8,c0ac8fc2,c2293b80) at =
device_probe_and_attach+0xe1
bus_generic_attach(c2293b80,c2293b80,c22d5014,0,c0ac539d) at =
bus_generic_attach+0x28
acpi_pcib_attach(c2293b80,c22d5014,0,c08dd0d0,c2293b80) at =
acpi_pcib_attach+0x14e
acpi_pcib_acpi_attach(c2293b80,c2371050,c08dd0d0,c2293b80,c2293b80) at =
acpi_pcib_acpi_attach+0x20a
device_attach(c2293b80,c2293b80,c08dd0c0,c0adf5a8,c2293b80) at =
device_attach+0x6a
device_probe_and_attach(c2293b80,4,c0c21c98,c0ac60eb,c22ee600) at =
device_probe_and_attach+0xe1
bus_generic_attach(c22ee600,c22ee600,c22782c0,1,c22ee580) at =
bus_generic_attach+0x28
acpi_probe_children(c22ee600,1013749,c22ee600,c22ee600,0) at =
acpi_probe_children+0x63
acpi_attach(c22ee600,c2375850,c08dd0d0,c22ee600,c22ee600) at =
acpi_attach+0x523
device_attach(c22ee600,c22ee600,c2332bf0,c0c21d08,c22ee600) at =
device_attach+0x6a
device_probe_and_attach(c22ee600,c22ee780,c0c21d18,c083dc6a,c22ee780) at =
device_probe_and_attach+0xe1
bus_generic_attach(c22ee780,c22ee780,c0c21d38,c067e8fa,c22ee780) at =
bus_generic_attach+0x28
nexus_attach(c22ee780,c2354850,c08dd0d0,c22ee780,c22ee780) at =
nexus_attach+0x1a
device_attach(c22ee780,c22ee780,c226aa84,c0947bd0,c22ee780) at =
device_attach+0x6a
device_probe_and_attach(c22ee780,c226aa84,c0c21d80,c082ace9,c227c780) at =
device_probe_and_attach+0xe1
root_bus_configure(c227c780,c08d0cfc,0,c0c21d98,c0638e35) at =
root_bus_configure+0x28
configure(0,c1e000,c1ec00,c1e000,0) at configure+0x29
mi_startup() at mi_startup+0xb5
begin() at begin+0x2c
device_attach: xl0 attach returned 6
isab0: <PCI-ISA bridge> at device 31.0 on pci0
isa0: <ISA bus> on isab0
atapci0: <Intel ICH UDMA66 controller> port =
0xffa0-0xffaf,0x376,0x170-0x177,0x3f6,0x1f0-0x1f7 at device 31.1 on pci0
ata0: channel #0 on atapci0
ata1: channel #1 on atapci0
uhci0: <Intel 82801AA (ICH) USB controller> port 0xff80-0xff9f irq 19 at =
device 31.2 on pci0
uhci0: [GIANT-LOCKED]
usb2: <Intel 82801AA (ICH) USB controller> on uhci0
usb2: USB revision 1.0
uhub2: Intel UHCI root hub, class 9/0, rev 1.00/1.00, addr 1
uhub2: 2 ports with 2 removable, self powered
pci0: <serial bus, SMBus> at device 31.3 (no driver attached)
pci0: <multimedia, audio> at device 31.5 (no driver attached)
fdc0: <floppy drive controller> port 0x3f7,0x3f0-0x3f5 irq 6 drq 2 on =
acpi0
fdc0: FIFO enabled, 8 bytes threshold
fd0: <1440-KB 3.5" drive> on fdc0 drive 0
atkbdc0: <Keyboard controller (i8042)> port 0x64,0x60 irq 1 on acpi0
atkbd0: <AT Keyboard> flags 0x1 irq 1 on atkbdc0
kbd0 at atkbd0
atkbd0: [GIANT-LOCKED]
psm0: <PS/2 Mouse> irq 12 on atkbdc0
psm0: [GIANT-LOCKED]
psm0: model IntelliMouse, device ID 3
can't re-use a leaf (%desc)!
can't re-use a leaf (%driver)!
can't re-use a leaf (%location)!
can't re-use a leaf (%pnpinfo)!
can't re-use a leaf (%parent)!
sio0 port 0x3f8-0x3ff irq 4 on acpi0
sio0: type 16550A
sio1 port 0x2f8-0x2ff irq 3 on acpi0
sio1: type 16550A
orm0: <ISA Option ROMs> at iomem =
0xcf800-0xcffff,0xc9000-0xcf7ff,0xc0000-0xc8fff on isa0
pmtimer0 on isa0
ppc0: parallel port not found.
sc0: <System console> at flags 0x100 on isa0
sc0: VGA <16 virtual consoles, flags=3D0x300>
vga0: <Generic ISA VGA> at port 0x3c0-0x3df iomem 0xa0000-0xbffff on =
isa0
Timecounters tick every 10.000 msec
ATAPI_RESET time =3D 30us
acd0: DVDROM <ATAPI DVD-ROM 16X/422M> at ata0-master UDMA66
Waiting 15 seconds for SCSI devices to settle
da0 at ahc0 bus 0 target 0 lun 0
da0: <SEAGATE ST336706LW 010A> Fixed Direct Access SCSI-3 device
da0: 160.000MB/s transfers (80.000MHz, offset 63, 16bit), Tagged =
Queueing Enabled
da0: 35003MB (71687370 512 byte sectors: 255H 63S/T 4462C)
da1 at ahc0 bus 0 target 2 lun 0
da1: <QUANTUM ATLAS 10K 18WLS UCHQ> Fixed Direct Access SCSI-3 device
da1: 160.000MB/s transfers (80.000MHz, offset 31, 16bit), Tagged =
Queueing Enabled
da1: 17366MB (35566499 512 byte sectors: 255H 63S/T 2213C)
SMP: AP CPU #1 Launched!
Mounting root from ufs:/dev/da0s2a

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ahd@xena.hh.kew.com:/scratch/xena/obj/scratch/current/src/sys/GENERIC_PUC=
=0DWARNING: WITNESS option enabled, expect reduced =
performance.=0DTimecounter "i8254" frequency 1193182 Hz quality 0=0DCPU: =
Intel Pentium III (728.44-MHz 686-class CPU)=0DOrigin =3D "GenuineIntel" =
 Id =3D 0x683  Stepping =3D =
3=0DFeatures=3D0x383fbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR=
,PGE,MCA,CMOV,PAT,PSE36,MMX,FXSR,SSE>=0Dreal memory  =3D 1073340416 =
(1023 MB)=0Davail memory =3D 1040789504 (992 MB)=0DACPI APIC Table: =
<DELL   GX300  >=0DFreeBSD/SMP: Multiprocessor System Detected: 2 =
CPUs=0Dcpu0 (BSP): APIC ID:  0=0Dcpu1 (AP): APIC ID:  1=0Dioapic0: =
Changing APIC ID to 2=0Dioapic0 <Version 2.0> irqs 0-23 on =
motherboard=0Dnpx0: [FAST]=0Dnpx0: <math processor> on =
motherboard=0Dnpx0: INT 16 interface=0Dacpi0: <DELL GX300  > on =
motherboard=0Dacpi0: Power Button (fixed)=0DTimecounter "ACPI-fast" =
frequency 3579545 Hz quality 1000=0Dacpi_timer0: <24-bit timer at =
3.579545MHz> port 0x808-0x80b on acpi0=0Dcpu0: <ACPI CPU> on =
acpi0=0Dcpu1: <ACPI CPU> on acpi0=0Dpcib0: <ACPI Host-PCI bridge> port =
0xcf8-0xcff on acpi0=0Dpci0: <ACPI PCI bus> on pcib0=0Dagp0: <Intel =
82820 host to AGP bridge> mem 0xf0000000-0xf3ffffff at device 0.0 on =
pci0=0Dpcib1: <PCI-PCI bridge> at device 1.0 on pci0=0Dpci1: <PCI bus> =
on pcib1=0Dpci1: <display, VGA> at device 0.0 (no driver =
attached)=0Dpcib2: <ACPI PCI-PCI bridge> at device 30.0 on pci0=0Dpci2: =
<ACPI PCI bus> on pcib2=0Dpuc0: <US Robotics (3Com) 3CP5609 PCI 16550 =
Modem> port 0xecf8-0xecff irq 18 at device 9.0 on pci2=0Dsio4: <US =
Robotics (3Com) 3CP5609 PCI 16550 Modem> on puc0=0Dsio4: type =
16550A=0Dsio4: unable to activate interrupt in fast mode - using normal =
mode=0Dahc0: <Adaptec 29160N Ultra160 SCSI adapter> port 0xe800-0xe8ff =
mem 0xf8fff000-0xf8ffffff irq 19 at device 10.0 on pci2=0Dahc0: =
[GIANT-LOCKED]=0Daic7892: Ultra160 Wide Channel A, SCSI Id=3D7, 32/253 =
SCBs=0Dpcib3: <PCI-PCI bridge> at device 11.0 on pci2=0Dpci3: <PCI bus> =
on pcib3=0Dohci0: <NEC uPD 9210 USB controller> mem =
0xfafff000-0xfaffffff irq 16 at device 8.0 on pci3=0Dohci0: =
[GIANT-LOCKED]=0Dusb0: OHCI version 1.0=0Dusb0: <NEC uPD 9210 USB =
controller> on ohci0=0Dusb0: USB revision 1.0=0Duhub0: NEC OHCI root =
hub, class 9/0, rev 1.00/1.00, addr 1=0Duhub0: 3 ports with 3 removable, =
self powered=0Dohci1: <NEC uPD 9210 USB controller> mem =
0xfaffe000-0xfaffefff irq 17 at device 8.1 on pci3=0Dohci1: =
[GIANT-LOCKED]=0Dusb1: OHCI version 1.0=0Dusb1: <NEC uPD 9210 USB =
controller> on ohci1=0Dusb1: USB revision 1.0=0Duhub1: NEC OHCI root =
hub, class 9/0, rev 1.00/1.00, addr 1=0Duhub1: 2 ports with 2 removable, =
self powered=0Dpci3: <serial bus, USB> at device 8.2 (no driver =
attached)=0Dfwohci0: <Texas Instruments TSB43AB23> mem =
0xfaff8000-0xfaffbfff,0xfaffd000-0xfaffd7ff irq 16 at device 12.0 on =
pci3=0Dfwohci0: [GIANT-LOCKED]=0Dfwohci0: OHCI version 1.10 =
(ROM=3D1)=0Dfwohci0: No. of Isochronous channels is 4.=0Dfwohci0: EUI64 =
00:50:42:b5:c0:0c:f7:9d=0Dfwohci0: Phy 1394a available S400, 3 =
ports.=0Dfwohci0: Link S400, max_rec 2048 bytes.=0Dfirewire0: =
<IEEE1394(FireWire) bus> on fwohci0=0Dfwe0: <Ethernet over FireWire> on =
firewire0=0Dif_fwe0: Fake Ethernet address: 02:50:42:0c:f7:9d=0Dfwe0: =
Ethernet address: 02:50:42:0c:f7:9d=0Dsbp0: <SBP-2/SCSI over FireWire> =
on firewire0=0Dfwohci0: Initiate bus reset=0Dfwohci0: =
node_id=3D0xc800ffc0, gen=3D1, CYCLEMASTER mode=0Dfirewire0: 1 nodes, =
maxhop <=3D 0, cable IRM =3D 0 (me)=0Dfirewire0: bus manager 0 =
(me)=0Dxl0: <3Com 3c905C-TX Fast Etherlink XL> port 0xec00-0xec7f mem =
0xf8ffec00-0xf8ffec7f irq 18 at device 12.0 on pci2=0Dmiibus0: <MII bus> =
on xl0=0Dxlphy0: <3c905C 10/100 internal PHY> on miibus0=0Dxlphy0:  =
10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, auto=0Dxl0: Ethernet =
address: 00:b0:d0:2b:93:1e=0Dxl0: [GIANT-LOCKED]=0Disab0: <PCI-ISA =
bridge> at device 31.0 on pci0=0Disa0: <ISA bus> on isab0=0Datapci0: =
<Intel ICH UDMA66 controller> port =
0xffa0-0xffaf,0x376,0x170-0x177,0x3f6,0x1f0-0x1f7 at device 31.1 on =
pci0=0Data0: channel #0 on atapci0=0Data1: channel #1 on =
atapci0=0Duhci0: <Intel 82801AA (ICH) USB controller> port 0xff80-0xff9f =
irq 19 at device 31.2 on pci0=0Duhci0: [GIANT-LOCKED]=0Dusb2: <Intel =
82801AA (ICH) USB controller> on uhci0=0Dusb2: USB revision 1.0=0Duhub2: =
Intel UHCI root hub, class 9/0, rev 1.00/1.00, addr 1=0Duhub2: 2 ports =
with 2 removable, self powered=0Dpci0: <serial bus, SMBus> at device =
31.3 (no driver attached)=0Dpci0: <multimedia, audio> at device 31.5 (no =
driver attached)=0Dfdc0: <floppy drive controller> port =
0x3f7,0x3f0-0x3f5 irq 6 drq 2 on acpi0=0Dfdc0: FIFO enabled, 8 bytes =
threshold=0Dfd0: <1440-KB 3.5" drive> on fdc0 drive 0=0Datkbdc0: =
<Keyboard controller (i8042)> port 0x64,0x60 irq 1 on acpi0=0Datkbd0: =
<AT Keyboard> flags 0x1 irq 1 on atkbdc0=0Dkbd0 at atkbd0=0Datkbd0: =
[GIANT-LOCKED]=0Dpsm0: <PS/2 Mouse> irq 12 on atkbdc0=0Dpsm0: =
[GIANT-LOCKED]=0Dpsm0: model IntelliMouse, device ID 3=0Dsio0 port =
0x3f8-0x3ff irq 4 on acpi0=0Dsio0: type 16550A=0Dsio1 port 0x2f8-0x2ff =
irq 3 on acpi0=0Dsio1: type 16550A=0Dorm0: <ISA Option ROMs> at iomem =
0xcf800-0xcffff,0xc9000-0xcf7ff,0xc0000-0xc8fff on isa0=0Dpmtimer0 on =
isa0=0Dda0 at ahc0 bus 0 target 0 lun 0=0Dipfw2 initialized, divert =
disabled, rule-based forwarding disabled, default to deny, logging =
disabled=0D
------=_NextPart_000_0124_01C48E03.8D80A180--



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