Re: Oops in scsi_send_eh_cmnd 2.6.21-rc5-git6,7,10,13

[Andrew Burgess <aab@cichlid.com>]

James Bottomley wrote:

>It's actually a long standing bug in the 3w-xxxx driver.  Apparently it
>assumes request sense is always the use_sg == 0 case.  This is what it
>does on a request sense:

>static int tw_scsiop_request_sense(TW_Device_Extension *tw_dev, int request_id)
>{
>        dprintk(KERN_NOTICE "3w-xxxx: tw_scsiop_request_sense()\n");

>        /* For now we just zero the request buffer */
>        memset(tw_dev->srb[request_id]->request_buffer, 0, tw_dev->srb[request_id]->request_bufflen);
>        tw_dev->state[request_id] = TW_S_COMPLETED;
>        tw_state_request_finish(tw_dev, request_id);
>....

>Note that it's clearing the request buffer, which is actually zeroing the scatterlist, hence the problem.

OK. Is there a quick workaround or should I just wait for
Adam & Company to make a patch?

You said your earlier patch would hide it, and then said you
had a length wrong in it and I'm not sure what length you
mean.

Thanks for yours and Chuck's and Dave's time.