Re: This can freeze linux 2.0 on 486

Alan Cox (alan@lxorguk.ukuu.org.uk)
Sun, 26 Jan 1997 21:36:13 +0000 (GMT)

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In reply to: Praveen Dwivedi: "This can freeze linux 2.0 on 486"

> Recently I saw this behaviour on linux 2.0 running on i486.
> Instruction invd ( supposed to invalidate cache) can lock the m/c
> completely.

If you can do this from userspace can you try the same with a different
OS on the same hardware. It might he hardware, it might be trap handling
it might be a buggy chip or a general flaw in a stepping

I wouldnt rule out hardware. The 386 can be crashed with an instruction
from userspace

Alan

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In reply to: Praveen Dwivedi: "This can freeze linux 2.0 on 486"