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    SubjectRe: UDP recvmsg blocks after select(), 2.6 bug?
    On Thu, 7 Oct 2004 00:15:12 +0200
    Andries Brouwer <aebr@win.tue.nl> wrote:

    > I would hope that checksum failure is not the fast path,
    > so at zeroth sight, not having looked at the code, it seems
    > that we could do rather elaborate things on checksum failure
    > if we wanted to.

    The code in question is in net/ipv4/udp.c:udp_recvmsg()
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