From owner-freebsd-hackers Tue Aug 8 07:04:09 1995 Return-Path: hackers-owner Received: (from majordom@localhost) by freefall.cdrom.com (8.6.11/8.6.6) id HAA29541 for hackers-outgoing; Tue, 8 Aug 1995 07:04:09 -0700 Received: from southstation.mvp.com (southstation.mvp.com [198.145.97.253]) by freefall.cdrom.com (8.6.11/8.6.6) with ESMTP id HAA29535 for ; Tue, 8 Aug 1995 07:04:05 -0700 Received: (from george@localhost) by southstation.mvp.com (8.6.11/8.6.6) id HAA00270 for hackers@freebsd.org; Tue, 8 Aug 1995 07:05:18 -0700 Date: Tue, 8 Aug 1995 07:05:18 -0700 From: George Mitchell Message-Id: <199508081405.HAA00270@southstation.mvp.com> To: hackers@freebsd.org Subject: Help! Sender: hackers-owner@freebsd.org Precedence: bulk A week ago, I simultaneously got a new system and the FreeBSD 2.0.5 CDROM. The combination of the two is highly unreliable, and I'd like some opinions on whether I'm looking at a hardware or software problem. The system: Intel 486DX/2-50, motherboard from Midwest Micro, one 16MB SIMM (4Mx32) from the local generic PC clone store. The symptom: Every few hours, about the time that the system runs out of physical memory and decides to do some swapping, I get a Fatal trap 12: page fault while in kernel mode. Fault virtual address: varies unpredictably Fault code: supervisor read, page not present Instruction pointer: 0x8:0xf01XXXXX Code segment: base 0x0, limit 0xfffff, type 0x1b DPL 0, pres 1, def32 1, gran 1 Processor eflags: Interrupt enabled, resume, IOPL=0 Current process: varies Interrupt mask: usually blank, but not always This happens more often with the generic kernel than with the kernel I built, but I believe that's because the generic kernel is larger, and we run out of physical memory sooner. I could easily believe this is hardware, but I'm hoping it just might sound familiar to someone out there. Thanks for your attention! -- George Mitchel (george@mvp.com)