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    SubjectRe: [PATCH UPDATE] deflate stack usage in lib/inflate.c
    Date
    On Friday 13 April 2007 00:56:56 Jeremy Fitzhardinge wrote:
    > Andi Kleen wrote:
    > >> (This was under Xen, but there's no reason it couldn't happen on bare
    > >> hardware.)
    > >>
    > >
    > > Hmm, does Xen perhaps not use interrupt stacks?
    >
    > Looks like that's all done in do_IRQ, so it should be independent of
    > whether its Xen or not. And the stack overflow check is performed on
    > the main stack, before switching to the interrupt stack.

    Yes, but then we should have seen more frequently, shouldn't we? I always
    run with the stack overflow check enabled and I don't think I ever saw
    warnings in inflate.

    Something must be different in the Xen setup. Dunno if it's a bug,
    but such differences could cause more problems later.

    -Andi



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