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    Date
    SubjectRe: Kernel BUG: NULL pointer dereference , reference to sys_recvmsg
    From
    From: Chuck Ebbert <cebbert@redhat.com>
    Date: Thu, 10 May 2007 17:07:46 -0400

    > Here in sys_recvmsg() line 1911:
    >
    > ==> if (sock->file->f_flags & O_NONBLOCK)
    > flags |= MSG_DONTWAIT;
    > err = sock_recvmsg(sock, &msg_sys, total_len, flags);
    >
    > sock == -1, apparently because that's what sockfd_lookup_light()
    > returned earlier in the function. (It doesn't check err, just
    > that the returned sock is nonzero.)

    sockfd_lookup_light() returns NULL in all cases where 'err'
    is set non-zero.

    I suspect file->private_data has been corrupted somehow.
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