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    SubjectRe: A new K6 bug
    On Mon, Jun 01, 1998 at 04:06:22AM +0200, Benoit Poulot-Cazajous wrote:
    >
    > The problem reported by andreas@camus.xss.co.at with crashme is really caused
    > by a K6 bug. It can be reproduced at will on 2.0.xx kernels. It looks like
    > 2.1.xx kernels hide the bug.
    >
    > Here is how to reproduce it :
    >
    > $ cat a.s
    > .text
    > .align 4096 /* r1 */
    > .globl _start
    > _start:
    > movl _start, %edi /* S1 */
    > cmpb 0x80000000(%edi),%dl /* r2, S2 */
    > je nowhere /* r3 */
    > ret
    > $ as -o a.o a.s
    > $ ld -defsym nowhere=0xc0000000 a.o
    > $ ./a.out
    > <lockup. hard reset required>
    >
    > -- Benoit
    >

    Indeed, this little program chrashes all our K6 under linux 2.0.x, even those I
    bought 1 week ago. The mainboard, etc doesn't matter at all (we have HX, TX
    boards from gigabyte and SP97-V and SP97-XV from asus with SIS chipsets).

    Would be very nice if a workaround could be found for 2.0.x.

    Wolfgang Walter

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