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To: current@freebsd.org
Subject: Recent instability ...
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Date: Wed, 08 May 1996 15:02:57 -0700
Message-ID: <28657.831592977@freefall.freebsd.org>
From: Poul-Henning Kamp <phk@freefall.freebsd.org>
Sender: owner-current@freebsd.org
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Precedence: bulk

I have been compiling kernels on all the machines I have access to
the last 4 days and I still havn't been able to reproduce the problem.

Please every body that has the problem, take time to examine and answer
as many as possible of these questions:

1.  Do you see any output on the screen at all before the reboot ?

2.  Does the precense/absence of "options DDB" change it ?

3.  Does the precense/absence of "options BOUNCE_BUFFER" change it ?

4. how much ram do you have ?

5. what cpu do you have

6. which "cpu" lines do you have active ?  ("I386_CPU" .. "I686_CPU")

7. With DDB, can you boot -d ?

8. How old are your bootblocks approx ?

9. try this patch to locore.s:
Index: locore.s
===================================================================
RCS file: /home/ncvs/src/sys/i386/i386/locore.s,v
retrieving revision 1.70
diff -u -r1.70 locore.s
--- locore.s    1996/05/02 22:24:55     1.70
+++ locore.s    1996/05/08 21:57:30
@@ -216,6 +216,7 @@
  * to set %cs, %ds, %es and %ss.
  */
        mov     %ds, %ax
+       mov     %ax, %es
        mov     %ax, %fs
        mov     %ax, %gs
 

10. which console driver do you use ?  syscons or pcvt ?

11.  Does the precense/absence of "options PROCFS"  change it ?

12.  Does the precense/absence of "options NFS"  change it ?

13. any other observations ?

Poul-Henning