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    SubjectRe: [PATCH] 2.4.0 i386 watchpoint problems
    Followup to:  <>
    By author: Linus Torvalds <>
    In newsgroup:
    > Actually, even simpler approach:
    > - always clear db7 after sending signal - don't test for pending or for
    > kernel mode at all at that point.
    > - re-load %db7 at the top of the for(;;) loop in do_signal().
    > That should mean that you will actually get a debug signal for ALL
    > triggers of the debug registers, except you'll only get one for kernel
    > mode.
    > (For extra credit, make the patch use "eip=-1" in the siginfo structure if
    > the trap happened in kernel mode, so that we don't leak kernel addresses
    > to user space. Not that it would be much of a security issue, but it's a
    > beauty wart that could easily be cleared up).

    It could be (and so would even giving the signals in kernel
    mode)... remember that silly case of passwords crossing page

    <> at work, <> in private!
    "Unix gives you enough rope to shoot yourself in the foot."
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