Re: 2.1.63 pentium f00f still foofs up

Evan Deaubl (outlet@azstarnet.com)
Thu, 13 Nov 1997 09:53:04 -0700 (MST)


Make that two times. I'm running a P5-100 and tried the following test:

char main[]={0xf0,0x0f,0xc7,0xc8};

It failed the same way, after the <handler... ...done>. VC's switchable,
keyboard still types, but the computer was just not very responsive...
Here's more /proc/cpuinfo:

processor : 0
cpu : 586
model : Pentium 75+
vendor_id : GenuineIntel
stepping : 5
fdiv_bug : no
hlt_bug : no
sep_bug : no
pentium_f00f_bug : yes
fpu : yes
fpu_exception : yes
cpuid : yes
wp : yes
flags : fpu vme de pse tsc msr mce cx8
bogomips : 35.94

I am running (unnecessarily) an SMP kernel, so is it a possibility that
just running an SMP kernel, even without multiple processors, causes the
problem?

Evan Deaubl
outlet@azstarnet.com

On Wed, 12 Nov 1997, The Cowguin Elfpimp 9001[tm] wrote:

> I've just installed 2.1.63 on my p166, and tried the f00f exploit, but it
> still crashes. It doesn't do a complete stop like before (power-down,
> etc.), it lets me change vc's and type to the console i ran the exploit
> from, but all input/output is completely dead and i have to slam on the
> reset. My /proc/cpuinfo is as follows:
>
> ---
> processor : 0
> cpu : 586
> model : Pentium 75+
> vendor_id : GenuineIntel
> stepping : 12
> fdiv_bug : no
> hlt_bug : no
> sep_bug : no
> pentium_f00f_bug : yes
> fpu : yes
> fpu_exception : yes
> cpuid : yes
> wp : yes
> flags : fpu vme de pse tsc msr mce cx8
> bogomips : 66.15
> ---
> My system is a p166 (running at 167, screwy jumpers :P) with 48 megs of
> ram on a triton(1) chipset. Any sort of help/explanation would be greatly
> appreciated.
>
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