SunOS 4.1 bombs exiting SunView or OpenWindows

[Jon Elion]

We recently upgraded our Sun 3/470 to a Sun 4 (installing a 4/330 board).
As part of this process, we also upgraded from SunOS 4.0.3 to SunOS 4.1.
On most (but not all) occasions that we exit SunView, the system chokes
and goes into an automatic reboot.  When we added more RAM (upgraded the
4/330 board from 1-megabyte SIMS to 4-megabyte SIMS, now having
32-megabytes total RAM), the problem didn't go away.  We just installed
OpenWindows, and it exhibits the same behavior (runs fine, until you exit
OpenWindows).  Anyone know what the problem is, or how to fix it?  I can't
find anything pertinent in the various sun-fixes depts on the net.

Jon Elion
jle at cfm.brown.edu

P.S. The latest message log (from an OpenWindows exit bomb) reads as follows:

BAD TRAP
pid 1215, `csh': Data fault
kernel read fault at addr=0xffd0e000, pme=0xff07fb84
Bus Error Reg 20<TIMEOUT>
pc=0xffe82790, sp=0xf8112c68, psr=0x119001c4, context=0x1
g1-g7: ffe8642c, f813d000, ff1e7a30, ff1e83e0, f825f000, f8136800, f8136400
Begin traceback... sp = f8112c68
Called from ffe96f74, fp=f8112cc0, args=ffd0e000 fffffb84 1000 1 ff002e80 f816f158
Called from ffe96f40, fp=f8112d20, args=c ff 18911 ffd0e000 ffd0f000 10000000
Called from ffe85d30, fp=f8112d60, args=0 0 18911 324 ffd18010 10000000
Called from ffe85a24, fp=f8112da0, args=12 12 ffeff400 12 ffd18000 40
Called from ffe86c3c, fp=f8112e00, args=21 0 0 0 1 ffd0401f
Called from f80c2ea4, fp=f8112e80, args=f814c5d3 2 ffefefec ffefefe8 0 73
Called from f8031b74, fp=f8112ee0, args=ff140004 0 f814c5d5 7cb 0 5
Called from f8031a14, fp=f8112f40, args=114000c6 f80c2d80 0 0 114001e4 f816f158
Called from f8006e3c, fp=f8112fa0, args=f80b7f68 114000c6 1000 1 ff002e80 f816f158
Called from f80ef680, fp=f825e820, args=0 200 8f6a4 34000 200 ff004400
End traceback...
panic: Data fault
syncing file systems... [21] 2 [21] 1 [20] 1 [14] 1 [9] 1 [1] 1 [1] 1 [1] 1 [1] 1 [1] 1 [1] 1 [1] 1 [1] 1 [1] 1 [1] 1 [1] 1 [1] 1 [1] 1 [1] 1 [1] 1 done
00176 low-memory static kernel pages
00129 additional static and sysmap kernel pages
00000 dynamic kernel data pages
00032 additional user structure pages
00001 segmap kernel pages
00000 segvn kernel pages
00068 current user process pages
00017 user stack pages
00423 total pages (423 chunks)

dumping to vp ff1438a4, offset 112578
423 total pages, dump succeeded
rebooting...