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    SubjectRe: 2.3.44 bug
    On Sun, 13 Feb 2000, Tigran Aivazian wrote:

    > I was using 2.3.43 (and all other recent 2.3.x) without observing
    > this specific problem so it is something new to 2.3.44. I have not
    > narrowed it down yet but the symptom is that I can't start any
    > large programs (e.g. X) and can't compile almost anything, gcc
    > randomly dies with SIGSEGV.

    This problem is not new. 2.3.42 and 2.3.43 have it too.

    > The machine is a plain dual PIII (Katmai) 550 on a GA BXD
    > motherboard, nothing too exotic - old good slot 1 design.

    It's a typical SMP problem, supposedly caused by bugs in
    the TLB flush code.

    > I will let you know if I find more - I intend to narrow it down
    > and then look closer at the changes.

    I've narrowed it down a little bit.

    $ for i in `seq 50` ; do md5sum <file_bigger_than_ram> ; done

    Over NFS this works, gives the same (correct) md5 sum every time.
    Now I copy this file to my ext2 /tmp partition and try again.
    About one in five md5sums is incorrect ... but the file _write_
    has always been correct.

    2.3.37 is the last kernel I tried where the error didn't show
    up, so I suspect it changed somewhere between 2.3.37 and 2.3.42.


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