Subject: isp0: I/O while blocked.
To: None <>
From: Staffan Thomen <>
List: current-users
Date: 10/28/2003 14:57:11
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 For a few days now, I've had repeated freezes of my NetBSD/Alpha
 system running fresh -current kernels (userland hasn't had time to
 catch up yet)

 That is, the serial console spits out

  isp0: I/O while blocked

 so fast that it gets it wrong, missing newlines and question marks
 all over. I can't break the system into kernel debugger either,
 it appears.

 Did my QLA1080 go mad, or did something happen software-wise?
 Here's the dmesg

isp0: I/O while blocked
isp0: I/O while Copyright (c) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003
    The NetBSD Foundation, Inc.  All rights reserved.
Copyright (c) 1982, 1986, 1989, 1991, 1993
    The Regents of the University of California.  All rights reserved.

NetBSD 1.6ZE (KITT) #0: Mon Oct 27 16:23:32 EET 2003
Digital AlphaPC 164 500 MHz, s/n=20
8192 byte page size, 1 processor.
total memory =3D 256 MB
(2472 KB reserved for PROM, 253 MB used by NetBSD)
avail memory =3D 231 MB
using 1635 buffers containing 13080 KB of memory
mainbus0 (root)
cpu0 at mainbus0: ID 0 (primary), 21164A-2
cpu0: Architecture extensions: 1<BWX>
cia0 at mainbus0: DECchip 2117x Core Logic Chipset (ALCOR/ALCOR2), pass 3
cia0: extended capabilities: 21<DWEN,BWEN>
cia0: using BWX for PCI config access
pci0 at cia0 bus 0
pci0: i/o space, memory space enabled, rd/line, rd/mult, wr/inv ok
siop0 at pci0 dev 5 function 0: Symbios Logic 53c810a (fast scsi)
siop0: interrupting at eb164 irq 2
scsibus0 at siop0: 8 targets, 8 luns per target
isp0 at pci0 dev 6 function 0: QLogic 1080 Ultra-2 Wide SCSI HBA
isp0: interrupting at eb164 irq 0
scsibus1 at isp0: 16 targets, 8 luns per target
fxp0 at pci0 dev 7 function 0: i82550 Ethernet, rev 12
fxp0: interrupting at eb164 irq 1
fxp0: Ethernet address 00:02:b3:c8:98:d1
inphy0 at fxp0 phy 1: i82555 10/100 media interface, rev. 4
inphy0: 10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, auto
sio0 at pci0 dev 8 function 0: Intel 82378ZB System I/O (SIO) (rev. 0x43)
vga0 at pci0 dev 9 function 0: Matrox MGA Mystique 1064SG (rev. 0x03)
wsdisplay0 at vga0 kbdmux 1
wsmux1: connecting to wsdisplay0
CMD Technology PCI0646 (IDE mass storage, interface 0x80, revision 0x01) at=
 dev 11 function 0 not configured
isa0 at sio0
com0 at isa0 port 0x3f8-0x3ff irq 4: ns16550a, working fifo
com0: console
com1 at isa0 port 0x2f8-0x2ff irq 3: ns16550a, working fifo
pckbc0 at isa0 port 0x60-0x64
pcppi0 at isa0 port 0x61
midi0 at pcppi0: PC speaker
spkr0 at pcppi0
isabeep0 at pcppi0
fdc0 at isa0 port 0x3f0-0x3f7 irq 6 drq 2
mcclock0 at isa0 port 0x70-0x71: mc146818 or compatible
fd0 at fdc0 drive 0: 1.44MB, 80 cyl, 2 head, 18 sec
scsibus0: waiting 2 seconds for devices to settle...
scsibus1: waiting 2 seconds for devices to settle...
st0 at scsibus0 target 2 lun 0: <SEAGATE, DAT    04687-XXX, 6610> tape remo=
st0: drive empty
st0: async, 8-bit transfers
cd0 at scsibus0 target 4 lun 0: <PLEXTOR, CD-ROM PX-20TS, 1.01> cdrom remov=
cd0: sync (100.00ns offset 8), 8-bit (10.000MB/s) transfers
sd0 at scsibus1 target 10 lun 0: <QUANTUM, ATLAS10K3_36_WLS, 020W> disk fix=
sd0: async, 8-bit transfers
sd0: 35074 MB, 31022 cyl, 4 head, 578 sec, 512 bytes/sect x 71833096 sectors
sd0: sync (25.00ns offset 8), 16-bit (80.000MB/s) transfers, tagged queueing
sd1 at scsibus1 target 12 lun 0: <IBM, DDYS-T36950N, S96H> disk fixed
sd1: async, 8-bit transfers
sd1: 35003 MB, 15110 cyl, 12 head, 395 sec, 512 bytes/sect x 71687340 secto=
sd1: sync (25.00ns offset 8), 16-bit (80.000MB/s) transfers, tagged queueing
WARNING: can't figure what device matches "DVA 1 0 0 0 0 0 0"
root on sd0a dumps on sd0b

Staffan Thom=E9n
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