From owner-freebsd-questions Tue Aug 20 13:41:22 1996 Return-Path: owner-questions Received: (from root@localhost) by freefall.freebsd.org (8.7.5/8.7.3) id NAA02118 for questions-outgoing; Tue, 20 Aug 1996 13:41:22 -0700 (PDT) Received: from uctmail2.uct.ac.za (uctmail2.uct.ac.za [137.158.128.56]) by freefall.freebsd.org (8.7.5/8.7.3) with SMTP id NAA02106 for ; Tue, 20 Aug 1996 13:41:07 -0700 (PDT) Received: by uctmail2.uct.ac.za via sendmail with stdio id for questions@freebsd.org; Tue, 20 Aug 1996 22:40:49 +0200 (SAT) (Smail-3.2 1996-Jul-4 #2 built 1996-Jul-22) Message-Id: Received: by uctmail.uct.ac.za (Mort 2.18) id 10365 from ELECENG; Tue Aug 20 22:40:48 1996 From: "Grant Carter" Organization: University of Cape Town To: questions@freebsd.org Date: Tue, 20 Aug 1996 22:40:48 UTC-2 Subject: Kernel panic Priority: normal X-mailer: Pegasus Mail v3.22 Sender: owner-questions@freebsd.org X-Loop: FreeBSD.org Precedence: bulk Hello I have a PINE (PT-7502) Pentium PCI motherboard with the Intel i430VX chipset. The board has 256K of pipelined burst cache on a COAST module. I am currently running a Cyrix 6x86 120Mhz processor on it and 2x16Mb EDO, TIN plated, 60ns Hitachi SIMMS. I also have an ExpertColor DSV 3325 (S3 Virge (325) based PCI video card). I am currently running BSD 2.1 My problem is this: Whenever I make world, I get the following panic: "rlist_free : free start overlaps already freed area at list tail." This happens at different times during the "make world" process. Putting 2x8Mb non-parity SIMMS in seems to solve the problem. If different EDO SIMMS (also TIN plated) are inserted, the problem still persists. I have tried swapping out the video card as well but have had no luck. My kernel is compiled for a 486. Thus there seems to be a problem with this motherboard, EDO SIMMS and BSD (the board world fine under e.g. '95 and NT). The person whom I bought the motherboard from says there is no problem with his motherboard. He thinks that by putting GOLD plated SIMMS in the motherboard, the problem could go away. The motherboard manual says nothing about the need for gold plated SIMMS. The supplier basically says that this is a BSD problem. 3 questions: 1) What causes this particular kernel panic i.e. could someone please explain the error to me. 2) Why would GOLD plated SIMMS make a difference (assuming they do as the system is currently being tested) 3) Should I continue kicking up a fuss about the motherboard by saying that it should not matter whether I insert TIN or GOLD plated SIMMS? What valid reasons can I give my supplier that this motherboard is not suitable (assuming of course that it is not). Many thanks in advance Grant --- Grant Carter gcarter@eleceng.uct.ac.za Electrical Engineering Student University of Cape Town "Coffee not found - operator halted!"