zs3: silo overflow crashes

[Charlie Dennett]

Once again I turn to the net because the Hotline is stone cold.

My system is a 3/260 under 4.0.1.  On the average of once a week, my
system crashes with a zs3: silo overflow.  Device zs3 is not mentioned in
my kernal configuration file - not even in a comment line.  The only zs
devices there are zs0 and zs1.  These crashes seem to be associated with
mouse activity - usually, but not always rapid mouse activity.  Listed
below are the relevant messages I found in /var/adm/messages from two
separate crashes.  Any insight into the problem is appreciated.

- ---Most recent crash-------
May  9 15:13:51 cygnus vmunix: ypserv: 
May  9 15:13:51 cygnus vmunix: trap address 0x8, pid 65, pc = f086282, sr = 2510, stkfmt b, context 1
May  9 15:13:51 cygnus vmunix: Bus Error Reg 80<INVALID>
May  9 15:13:51 cygnus vmunix: data fault address f357d36 faultc 0 faultb 0 dfault 1 rw 1 size 0 fcode 5
May  9 15:13:51 cygnus vmunix: KERNEL MODE
May  9 15:13:51 cygnus vmunix: page map 0 pmgrp ce
May  9 15:13:51 cygnus vmunix: D0-D7  ffbf7ffe 40 1 0 0 0 2100 2d8e
May  9 15:13:51 cygnus vmunix: A0-A7  f357d32 f08bf48 ffff9632 0 0 f0ce510 f08bf50 f08bf34
May  9 15:13:51 cygnus vmunix: Begin traceback...fp = f08bf50, sp = f08bf34
May  9 15:13:51 cygnus vmunix: Called from f088ece, fp=f08bf78, args=f0b9b24 1 1 0
May  9 15:13:51 cygnus vmunix: Called from f01b38a, fp=f08bf9c, args=0 0 0 1
May  9 15:13:51 cygnus vmunix: Called from f01b26e, fp=f08bfc0, args=2000 0 2504 effffdc
May  9 15:13:51 cygnus vmunix: Called from f004704, fp=ffff9660, args=f0648b2 2000 0 e3000001
May  9 15:13:51 cygnus vmunix: End traceback...
May  9 15:13:51 cygnus vmunix: panic: Bus error
May  9 15:13:51 cygnus vmunix: zs3: silo overflow
May  9 15:13:51 cygnus vmunix: syncing file systems... [11] [11] [9] [2] [1] [1] [1] [1] [1] [1] [1] [1] [1] [1] [1] [1] [1] [1] [1] [1] done
May  9 15:13:51 cygnus vmunix: 
May  9 15:13:51 cygnus vmunix: dumping to vp f0e38fc, offset 17248

- ---Second most recect crash-----

May  3 11:47:08 cygnus vmunix: etherfind: 
May  3 11:47:08 cygnus vmunix: trap address 0x8, pid 1379, pc = f086282, sr = 2500, stkfmt b, context 6
May  3 11:47:08 cygnus vmunix: Bus Error Reg 80<INVALID>
May  3 11:47:08 cygnus vmunix: data fault address f33dd36 faultc 0 faultb 0 dfault 1 rw 1 size 0 fcode 5
May  3 11:47:08 cygnus vmunix: KERNEL MODE
May  3 11:47:08 cygnus vmunix: page map 0 pmgrp 82
May  3 11:47:08 cygnus vmunix: D0-D7  ffbf7ffe 40 0 25 5 78 2100 54a
May  3 11:47:08 cygnus vmunix: A0-A7  f33dd32 f08bf48 ffff97e2 0 0 f0cd730 f08bf50 f08bf34
May  3 11:47:08 cygnus vmunix: Begin traceback...fp = f08bf50, sp = f08bf34
May  3 11:47:08 cygnus vmunix: Called from f088ece, fp=f08bf78, args=f0b9b24 1 1 0
May  3 11:47:08 cygnus vmunix: Called from f01b38a, fp=f08bf9c, args=0 0 2 3
May  3 11:47:08 cygnus vmunix: Called from f01b26e, fp=f08bfc0, args=9 2 0 291e8
May  3 11:47:08 cygnus vmunix: Called from f004704, fp=effefd4, args=ece7730 9 0 e3000001
May  3 11:47:08 cygnus vmunix: End traceback...
May  3 11:47:08 cygnus vmunix: panic: Bus error
May  3 11:47:08 cygnus vmunix: zs3: silo overflow
May  3 11:47:08 cygnus vmunix: syncing file systems... [13] 1 [13] [9] [3] done
May  3 11:47:08 cygnus vmunix: 
May  3 11:47:08 cygnus vmunix: dumping to vp f0e38fc, offset 17248


Charlie Dennett          | UUCP: ...!rutgers!rochester!kodak!cygnus!dennett
Infomation Services      | Internet:  dennett at cygnus.Kodak.COM
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Rochester, NY 14653-5219 |