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Bug#319457: kernel-image-2.6.8-2-k7: DVD Burning with ide-scsi : oops the kernel, hangs ide-scsi

(I am sending this to cdrecord / dvdrecord / gcombust mantainers
as well: please read below)

On Mon, Jul 25, 2005 at 06:30:25PM +0900, Horms wrote:
> tag 319457 +wontfix
> thanks
> On Fri, Jul 22, 2005 at 10:38:47AM +0200, A Mennucc wrote:
> > Package: kernel-image-2.6.8-2-k7
> > Version: 2.6.8-16
> > Severity: important
> > 
> > I just bought a DVD Burner; I wanted to burn stuff, so I loaded
> > ide-scsi (since this was the way to go some years ago - I did not 
> > know that now is deprecated) ; the command 
> > $ dvdrecord dev=1,0,0 -v -dummy -dao  debian-31r0a-i386-binary-1.iso
> > segfaulted, and its fork started printing:
> >  dvdrecord: No such device or address. Cannot send SCSI cmd via ioctl
> > 
> > Moreover the kernel oopsed (NULL pointer dereference)
> > and then the module ide-scsi seems dead
> > (cannot remove it, does not respond); see dmesg in attachment
> Don't use ide-scsi, ever!

two options:

1) If idescsi should never be used, then idescsi should
not be built into the kernel (by setting BLK_DEV_IDESCSI to no)

2) If idescsi is shipped, then it should not ever oops by
NULL point dereferencing.

Your tag 'wontfix' is nonsense: any option of the above that you
choose, you find a a bug in the current kernel that must be fixed in
future revisions.

> Can dvdrecord use ide devices directly?

When starting cdrecord using ATAPI interface it prints 
 Warning: Using ATA Packet interface.
 Warning: The related Linux kernel interface code seems to be unmaintained.
 Warning: There is absolutely NO DMA, operations thus are slow.
This seems to suggest that idescsi should be used instead.

Currently /usr/share/doc/cdrecord/README.ATAPI.setup says
 "Usually you would not want to use ide-scsi with kernel 2.6"
It does not say :  "Do not ever use it"

Moreover gcombust does not support ATAPI in its interface

> Any tool that uses it should have a bug filed against it.
> If so please do that. 
> I'm marking this as wontfix and leaving it open
> so it can act as a reference for others.

I think that kernel people and the mantainer of cdrecord/dvdrecord
should reach an agreement on this issue.
(Translation: I am just a poor user, please sort this out between

If idescsi should not be used, then the documents of
cdrecord/dvdrecord should be adjusted.  Moreover gcombust needs some
refurbishment to be able to use ATAPI.


Andrea Mennucc
 "Ukn ow,Ifina llyfixe dmysp acebar.ohwh atthef"

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