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    SubjectRe: 2.4.16 deadlock in kswapd
    Date
    > > Trace; c01117b5 <flush_tlb_page+75/80>
    > > Trace; c012f052 <swap_out+312/4b0>
    > > ...
    >
    > Dodgy hardware, I'm afraid - it looks like a cross-CPU interrupt
    > was sent but not received. Not uncommon.

    Andrea claimed there were races in the x86 ipi code. I dont know if his
    change was applied however. The x86 messaging is reliable (you'll see
    showers of apic errors before it fails) but does sometimes replay a message
    which is much fun

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