Hello!

I already reported this some time ago:
http://mail-index.netbsd.org/port-hp300/2001/03/09/0000.html

and the same thing is happening with 1.5.1BETA2. It's 
impossible to mount a CD as it always leads to a panic.

This does not happen on 1.4.3. Compiling a kernel without
softdeps doesn't help (really!). It is repeatable.

Here are the results on a 382 with 16MB memory, Fireball disk
and Mathushita CD-ROM:

varasto# mount -t cd9660^H^C
varasto# stty erase ^H
varasto# mount -o ro -t cd9660 /dev/sd1c /mnt
sd1: WARNING: no disk label, defining `c' partition as entire disk
May 25 04:09:54 varasto /netbsd: sd1: WARNING: no disk label, defining `c' parti
tion as entire disk
varasto#
varasto#
varasto# umount /mnt
varasto# !-2
mount -o ro -t cd9660 /dev/sd1c /mnt
uvm_fault(0x14845c, 0x6d207000, 0, 0x1) -> 0x1
  type 8, code [mmu,,ssw]: 545
trap type 8, code = 0x545, v = 0x6d20737e
kernel program counter = 0xe19f2
kernel: MMU fault trap
pid = 253, pc = 000E19F2, ps = 2400, sfc = 1, dfc = 1
Registers:
             0        1        2        3        4        5        6        7
dreg: 00100210 FFFFFFFF 00002404 00002400 0013F28C 0013F28C 00000001 FFFFFFFE
areg: 000E53DC 6D207374 01C5FC80 6D207374 0013F28C 01C5FC80 00627B74 FFEFFC58

Kernel stack (00627AA4):
627AA4: 0012852E 00627AF4 00000080 00002404 00002400 0013F28C 0013F28C 00000001
627AC4: FFFFFFFE 01C5FC80 6D207374 0013F28C 01C5FC80 00000000 00000000 00627B74
627AE4: 0000191A 00000008 00000545 6D20737E 00100210 FFFFFFFF 00002404 00002400
627B04: 0013F28C 0013F28C 00000001 FFFFFFFE 000E53DC 6D207374 01C5FC80 6D207374
627B24: 0013F28C 01C5FC80 00627B74 FFEFFC58 00000000 2400000E 19F27008 00627B9C
627B44: 05450005 00450005 6D20737E 00627B74 00627BAC 01C5FC80 00627B9C 0011B47E
627B64: 00A20000 00000007 01C06DD6 01C054F6 00627BAC 000E5416 6D207374 00002404
627B84: 00002400 0000040A 00000001 01C5FC80 01C5FC80 0011B81E 00000000 0011B860
627BA4: 01C06D80 00000000 00627BC4 000443AE 01C5FC80 01C054F6 00000008 01C05400
627BC4: 00627BD4 0011CF1A 01C5FC80 01C05400 00627BF8 0011D014 01C05400 01C5FC80
627BE4: 00002004 00000008 01C05400 01C05400 01C83F20 00627C08 0011CDB4 01C05400
627C04: 01C5FC80 00627C30 0011CD4C 00000001 0000040A 00000008 0000040A 00000000
627C24: 0000000C 01C5FC80 01C05400 00627C5C 0011C590 01C5FC80 0000007C 00000002
627C44: 00000000 00000000 00000001 01C05200 005BB050 01C05400 00627C90 0011C754
627C64: 01C05400 0000040A 0000040A 0000000A 00000000 00006000 000000FF 01C05400
627C84: 005BB050 00627D5C 00000000 00627CB4 0011C8E0 0000040A 00000000 0000040A
panic: MMU fault
Stopped in mount_cd9660 at      _cpu_Debugger+0x6:      unlk    a6
db> t
_cpu_Debugger(2404,627af4,8,308be,627ae0) + 6
_panic(128100,2404,2400,13f28c,13f28c) + 60
_trap(8,545,6d20737e) + 234
_worklist_remove(6d207374) + 1c
_softdep_disk_write_complete(1c5fc80) + 36
_biodone(1c5fc80,1c05400,627bf8,11d014,1c05400) + 5a
_sdfinish(1c05400,1c5fc80,2004,8,1c05400) + 48
_sdstart(1c05400,1c5fc80,627c30,11cd4c,1) + ac
_sdustart(1) + 2a
_sdstrategy(1c5fc80,7c,2) + 170
_sdgetcapacity(1c05400,40a) + ee
_sdgetinfo(40a,0,40a,616328,1) + 5e
_sdopen(40a,1,6000,616328,616328) + 84
_spec_open(627d5c) + 1b4
_iso_mountfs(5bb050,1c82400,616328,627db8) + d8
_cd9660_mount(1c82400,ffeffd89,ffeffc84,627e8c,616328) + 15e
_sys_mount(616328,627f88,627f80) + 3e8
_syscall(15) + 114
_trap0() + e
db>

This is pretty annoying and if you can solve this you're my hero!
I'd also like to know if anyone else has run into the same
problem. It's probably related to a CD-ROM showing up as 
sd and softdeps gets confused by that.

-- 
jht