Hello, Sun-Managers,
as usual, people answered my query very promptly. Here is a copy of my
initial message :
----- Begin Included Message -----
Date: Tue, 4 Dec 90 12:05:42 CST
From: Fabrice Le Metayer <fabrice@sj.ate.slb.com>
One of my diskless clients periodically reboots with the following error
messages :
hardware claims page map entry group number is 0xb4
software says page map entry group number is 0x34
pmg = f096bc10, pmg base = ede0000, addr = fa80000
panic: wrong pmg
Syncing disks... done
Dumping to vp f28be08, offset 8224
1534 total pages, dump succeeded
Rebooting...
The client is a Sun-3/160 running SunOS 4.0.3, and booting from a Sun-4/370
heterogeneous server. There are other Sun-3's on this server and this one
is the only one that shows this behaviour.
----- End Included Message -----
The general consensus was that the hardware was causing this, more specifically
the CPU board. I had it changed and sure enough, the problem went away. The
most common comment was :
> have you reported this as a hardware bug? looks like you have
> a "funny" bit in theonce of the SRAMs in the MMU - notice that
> xb4 and x34 are different by only one bit. try getting a new
> CPU and running it for a while.
Many thanks to :
carlo@white.stanford.edu (Carlo Tiana)
halstern@Sun.COM (Hal Stern - Consultant)
kevin@Corp.Sun.COM (Kevin Sheehan {Consulting Poster Child})
mwg8908@ultb.isc.rit.edu (M.W. Goheen)
rcsmith@anagld.analytics.com (Ray Smith)
Regards,
--
Fabrice
-- ,
Fabrice Le Metayer DOMAIN : fabrice@sj.ate.slb.com
Schlumberger Technologies - ATE UUCP : {amdahl,decwrl,uunet}!sjsca4!fabrice
San Jose, CA 95110 BELL : (408) 437-5114
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