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SubjectRe: OOPS: 2.5.1-pre8 - cdrecord + ide_scsi
On Sun, Dec 09 2001, Carl Ritson wrote:
>
> > On Sun, Dec 09 2001, Jens Axboe wrote:
> > > On Sun, Dec 09 2001, Carl Ritson wrote:
> > > > Got this at the very start of burning a cd, nothing special, using
> > > > ide-scsi build into kernel. "cdrecord -v dev=0,0,0 speed=4 img.iso".
> > > > Box is Dual-PIII 866, 1GB Ram, all IDE system.
> > >
> > > Agrh, because of a bug in ide-scsi conversion this (other) bug went
> > > unnoticed for a while. Basically we cannot look up the request queue
> > > reliably from a request, since it may not have originated from the block
> > > layer. ide-scsi builds it's own, for example. For those, we don't want
> > > to trust the sg count either.
> > >
> > > Does attached patch work?
> >
> > Irk, there's a ide-scsi bug in there too. In
> > drivers/scsi/ide-scsi.c:idescsi_free_bio() change the kfree(bhp) to
> > bio_put(bhp)
> >
>
> With both these fixes applied cdrecord hangs for 30 seconds, then spits
> out "cdrecord: No such device or address. Cannot send SCSI cmd via ioctl",
> a couple of hundred times.
>
> In the from dmesg from the same time I get.
> ------
> hdc: timeout waiting for DMA
> ide_dmaproc: chipset supported ide_dma_timeout func only: 14
> hdc: status error: status=0x58 { DriveReady SeekComplete DataRequest }
> hdc: drive not ready for command
> scsi: device set offline - command error recover failed: host 0 channel 0
> id 0 lun 0
> ------

Please try a run with DMA disabled.

--
Jens Axboe

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