>Number:         13210
>Category:       port-alpha
>Synopsis:       I can repeatably reboot my Alpha with a bad CD-ROM
>Confidential:   no
>Severity:       critical
>Priority:       high
>Responsible:    port-alpha-maintainer
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Thu Jun 14 18:34:00 PDT 2001
>Closed-Date:
>Last-Modified:
>Originator:     Kevin P. Neal
>Release:        1.5
>Organization:
-- 
Kevin P. Neal                                http://www.pobox.com/~kpn/

"You know, I think I can hear the machine screaming from here...  \
'help me! hellpp meeee!'"  - Heather Flanagan, 14:52:23 Wed Jun 10 1998
>Environment:
System: NetBSD tesseract.int.neutralgood.org 1.5 NetBSD 1.5 (TESSERACT) #5: Sun Apr 22 21:14:07 EDT 2001 kpn@tome.neutralgood.org:/usr/src/sys/arch/alpha/compile/TESSERACT alpha


>Description:

So, I have a CD-ROM that was burned for me. The CD was cheap as a blank
and crashes an old MacOS box every time. 

It also crashes my NetBSD/Alpha box, an AXPpci33 with a Yamaha CD-RW drive.
When the crash happens the box can't even dump (to sd0b), and I'm not sure
what the deal is with sd2 (but it might be related to the fancy-by-my-
standards SCSI controller).

>How-To-Repeat:
# cd if=/dev/cd0a of=/local/foo.iso

Wait for it.... *blammo*

siop0: target 5 now synchronous at 10.0Mhz, offset 8
panic: getblk: block size invariant failed
syncing disks... panic: lockmgr: locking against myself

dumping to dev 8,1 offset 331363
dump 32 
unexpected machine check:

    mces    = 0x1
    vector  = 0x670
    param   = 0xfffffc0000006048
    pc      = 0xfffffc00004e6ea8
    ra      = 0xfffffc0000305ecc
    curproc = 0xfffffc0001e84298
        pid = 322, comm = dd

panic: machine check

dumping to dev 8,1 offset 331363
dump device not ready


sd2: cache synchronization failed
rebooting...

Copyright (c) 1996, 1997, 1998, 1999, 2000
    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 1.5 (TESSERACT) #5: Sun Apr 22 21:14:07 EDT 2001
    kpn@tome.neutralgood.org:/usr/src/sys/arch/alpha/compile/TESSERACT
Alpha PC AXPpci33, 166MHz
8192 byte page size, 1 processor.
total memory = 32768 KB
(2024 KB reserved for PROM, 30744 KB used by NetBSD)
avail memory = 25704 KB
using 204 buffers containing 1632 KB of memory
mainbus0 (root)
cpu0 at mainbus0: ID 0 (primary), LCA-2 (21066 pass 2)
lca0 at mainbus0
pci0 at lca0 bus 0
pci0: i/o space, memory space enabled, rd/line, rd/mult, wr/inv ok
siop0 at pci0 dev 6 function 0: Symbios Logic 53c810 (fast scsi)
siop0: interrupting at isa irq 11
scsibus0 at siop0: 8 targets, 8 luns per target
sio0 at pci0 dev 7 function 0: vendor 0x8086 product 0x0484 (rev. 0x03)
de0 at pci0 dev 8 function 0
de0: interrupting at isa irq 9
de0: DEC DE500-BA 21143 [10-100Mb/s] pass 3.0
de0: address 08:00:2b:c4:99:0a
siop1 at pci0 dev 12 function 0: Symbios Logic 53c875 (ultra-wide scsi)
siop1: using on-board RAM
siop1: interrupting at isa irq 10
scsibus1 at siop1: 16 targets, 8 luns per target
isa0 at sio0
lc0 at isa0 port 0x300-0x31f iomem 0xd0000-0xd07ff irq 5: DE205-AC
lc0: address 00:00:f8:51:24:12, 128KB RAM, 2KB window
com0 at isa0 port 0x3f8-0x3ff irq 4: ns16550a, working fifo
com1 at isa0 port 0x2f8-0x2ff irq 3: ns16550a, working fifo
pckbc0 at isa0 port 0x60-0x64
pckbd0 at pckbc0 (kbd slot)
pckbc0: using irq 1 for kbd slot
wskbd0 at pckbd0: console keyboard
wdc0 at isa0 port 0x1f0-0x1f7 irq 14
wd0 at wdc0 channel 0 drive 0: <QUANTUM MAVERICK 540A>
wd0: drive supports 8-sector pio transfers, lba addressing
wd0: 516 MB, 1049 cyl, 16 head, 63 sec, 512 bytes/sect x 1057392 sectors
wd0: drive supports PIO mode 3, DMA mode 1
wd1 at wdc0 channel 0 drive 1: <Maxtor 7540 AV>
wd1: drive supports 8-sector pio transfers, lba addressing
wd1: 514 MB, 1046 cyl, 16 head, 63 sec, 512 bytes/sect x 1054368 sectors
wd1: drive supports PIO mode 3, DMA mode 0
vga0 at isa0 port 0x3b0-0x3df iomem 0xa0000-0xbffff
wsdisplay0 at vga0: console (80x25, vt100 emulation), using wskbd0
lpt0 at isa0 port 0x3bc-0x3bf irq 7
pcppi0 at isa0 port 0x61
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
scsibus0: waiting 2 seconds for devices to settle...
de0: enabling 10baseT port
sd0 at scsibus0 target 3 lun 0: <MICROP, 1548-15MZ1077801, HZ2P> SCSI1 0/direct fixed
siop0: target 3 now synchronous at 10.0Mhz, offset 8
sd0: 1637 MB, 2112 cyl, 15 head, 105 sec, 512 bytes/sect x 3353426 sectors
cd0 at scsibus0 target 5 lun 0: <YAMAHA, CRW6416S, 1.0c> SCSI2 5/cdrom removable
cd1 at scsibus0 target 6 lun 0: <DEC, RRD43   (C) DEC, 1084> SCSI2 5/cdrom removable
scsibus1: waiting 2 seconds for devices to settle...
sd1 at scsibus1 target 2 lun 0: <MICROP, 3391WS, x43h> SCSI2 0/direct fixed
siop1: target 2 using 16bit transfers
siop1: target 2 now synchronous at 20.0Mhz, offset 15
sd1: 8681 MB, 4811 cyl, 22 head, 167 sec, 512 bytes/sect x 17780058 sectors
sd2 at scsibus1 target 4 lun 0: <MICROP, 3391WS, x43h> SCSI2 0/direct fixed
siop1: target 4 using 16bit transfers
siop1: target 4 now synchronous at 20.0Mhz, offset 15
sd2: 8681 MB, 4811 cyl, 22 head, 167 sec, 512 bytes/sect x 17780058 sectors
root on sd0a dumps on sd0b
root file system type: ffs
wsdisplay0: screen 1 added (80x50, vt100 emulation)
wsdisplay0: screen 2 added (80x50, vt100 emulation)
wsdisplay0: screen 3 added (80x50, vt100 emulation)
wsdisplay0: screen 4 added (80x50, vt100 emulation)
wsdisplay0: screen 5 added (80x50, vt100 emulation)
wsdisplay0: screen 6 added (80x50, vt100 emulation)
wsdisplay0: screen 7 added (80x50, vt100 emulation)

>Fix:
	You got me.
>Release-Note:
>Audit-Trail:
>Unformatted: