Messages in this thread |  | | From | Peter Samuelson <> | Date | Fri, 8 Dec 2000 11:40:43 -0600 (CST) | Subject | Re: Signal 11 |
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[Dick Johnson] > > > char main[]={0xf0,0x0f,0xc0,0xc8}; /* try also on NT (: */ > > me2v@reliant DRFDecoder $ ./op > > Illegal instruction (core dumped) > > Yep. And on early Pentinums, the ones with the "f00f" bug, it would > lock the machine tighter than a witches crotch. Ooops, not > politically correct.... It would allow user-mode code to halt the > machine.
...Until Linux 2.0.34 or so (can't remember the exact version number) which had the workaround for this bug, about a week after the bug was discovered.
And I was reminded in private mail that the correct lockup sequence is actually
char main[]={0xf0,0x0f,0xc7,0xc8};
where the 0xc8 can be anything from 0xc8 to 0xcf.
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