Re: 2.5.64-mm6: oops in elv_remove_request

Jeremy Fitzhardinge
2003-03-14T22:04:44Z

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