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    SubjectRe: 2.5.64-mm6: oops in elv_remove_request
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    On Fri, 2003-03-14 at 12:33, Jens Axboe wrote:
    > On Fri, Mar 14 2003, Jeremy Fitzhardinge wrote:
    > > With the version or cdrtools I compiled, I get an instant oops+lockup
    > > with the above command when running with anticipatory scheduler in
    > > 2.5.64-mm6 (hand written):
    > >
    > > elv_remove_request
    > > ide_end_request
    > > cdrom_end_request
    > > cdrom_decode_status
    > > cdrom_newpc_intr
    >
    >
    > --- drivers/block/as-iosched.c~ 2003-03-14 21:32:14.000000000 +0100
    > +++ drivers/block/as-iosched.c 2003-03-14 21:32:38.000000000 +0100
    > @@ -1341,6 +1341,8 @@
    > insert_here = ad->dispatch->prev;
    >
    > list_add(&rq->queuelist, insert_here);
    > + if (arq)
    > + RB_CLEAR(&arq->rb_node);
    >
    > if (!list_empty(ad->dispatch) && rq_data_dir(rq) == READ
    > && (ad->antic_status == ANTIC_WAIT_REQ

    No joy, I'm afraid. Same crash.

    J

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