Date: Tue, 8 Aug 1995 07:05:18 -0700 From: George Mitchell <george@mvp.com> To: hackers@freebsd.org Subject: Help! Message-ID: <199508081405.HAA00270@southstation.mvp.com>
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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)
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