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    SubjectRe: [CHECKER] large stack variables (>=1K) in 2.4.4 and 2.4.4-ac8
    On Fri, May 25, 2001 at 03:20:20PM +1000, Keith Owens wrote:
    >
    > >> On a side note, does anyone know if the kernel does checking if the
    > >> stack overflowed at any time?
    > >
    > >You normally get a silent hang or worse a stack fault exception
    > >(which linux/x86 without kdb cannot recover from) which gives you instant
    > >reboot.
    >
    > You cannot recover from a kernel stack overflow even with kdb. The
    > exception handler and kdb use the stack that just overflowed.
    >
    Why not use a task gate for the double fault handler points to a
    per-processor TSS with a seperate stack. This would allow limited recovery
    from a kernel stack overlay.
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