Random panics on FreeeBSD 6.0
micahjon at ywave.com
Sat Jun 17 04:33:29 UTC 2006
Matthew Navarre wrote:
> On Jun 16, 2006, at 7:17 PM, Micah wrote:
>> Matthew Navarre wrote:
>>> I've got an AMD Sempron machine running FreeBSD 6.0 that's been
>>> experiencing random panics while trying to build world. In fact it
>>> just paniced now, with no activity.
>>> The panic message is TPTE at 0xbfc20624 IS ZERO @ VA 08100000
>>> bad pte
>>> This started last night while I was portupgrading ruby and I got
>>> random apps segfaulting, mostly gcc, so I suspected bad memory. I
>>> installed new memory today, tried to buildworld. And *BAM* panic: bad
>>> I'm still guessing that this is a hardware problem, and not software
>>> but I'm not sure. If anyone can give me a clue I'd appreciate it.
>>> Machine details:
>>> AMD Sempron
>>> ECS K8M800-M2 mainboard
>>> 1 GB Kingston PC-3200.
>> First, a quick Google of "bad pte" turns up some ideas. Try disabling
>> or changing APIC and/or ACPI settings. Make sure your swap partition
>> is error free and has enough room. Google a bit more just on the
>> lists.freebsd.org site for several possibilities.
> Yeah, I was wondering if it might be something in the BIOS settings.
> I'll google around and see what I find. I don't know if the first panic
> was a bad pte error since the machine was running headless.
>> For hardware, you can try memtest86+ to check to make sure the new
>> memory is good. There are other stress tests you can run as well - I
>> usually use the ultimate boot CD for that stuff. Other possible
>> problems are faulty or too small power supply; too much heat on CPU,
>> RAM, or expansion boards; faulty expansion cards and/or components; or
>> faulty hard drive.
> I kinda wondered if heat might be an issue, since it was kind of tucked
> away in a spot with bad airflow. I'll try the memtest thing. Is there a
> way to get the CPU temp in FreeBSD?
As mentioned, mbmon might work, but don't think that CPU is the only
generator of heat. I had random reboots due to an overheating graphics
card once. A spot thermometer comes in handy at a time like this.
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