-------- Original-Nachricht --------
Datum: Sun, 28 Jan 2007 23:04:49 -0800 (PST)
Von: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
An: Mike Galbraith <efault@xxxxxx>
CC: Uwe Bugla <uwe.bugla@xxxxxx>, Adrian Bunk <bunk@xxxxxxxxx>, Andrew Morton <akpm@xxxxxxxx>, gd@xxxxxxxxxxxx, alan@xxxxxxxxxxxxxxxxxxx, linux-ide@xxxxxxxxxxxxxxx, B.Zolnierkiewicz@xxxxxxxxxxxxxx, Jeff Garzik <jgarzik@xxxxxxxxx>, Jens Axboe <jens.axboe@xxxxxxxxxx>, Mike Christie <michaelc@xxxxxxxxxxx>, James Bottomley <James.Bottomley@xxxxxxxxxxxx>
Betreff: Re: 2.6.20-rc6: known unfixed regressions (v2) (part 2)
>
>
> [ Added Jeff, Jens and Mike Christie to Cc. I would _guess_ this is
> associated with the "larger block pc request" stuff: Mike, Jens? James B
> added for good luck.
>
> It apparently started happening somewhere between 2.6.19 and 2.6.20-rc2,
> and doing a
>
> gitk v2.6.19..v2.6.20-rc2 block/scsi_ioctl.c drivers/ide/
>
> I don't see anything else that really looks all that suspicious.. Unless
> maybe it's that "Fix SG_IO leak". Jeff added because of the hddtemp
> issue, but I think that was effectively SATA-only, so probably isn't
> relevant.
>
> Damn, I just realized that Jens is in the middle of his vacation for a
> week..
>
> Mike, can you please look at this and check? ]
>
> On Mon, 29 Jan 2007, Mike Galbraith wrote:
> >
> > FWIW, I just tried it with 2.6.20-rc6, and can confirm. Once nero is
> > run, the kernel never gives up retrying whatever command failed, so I
> > get...
> >
> > [ 4362.972995] hdd: status error: status=0x58 { DriveReady SeekComplete
> DataRequest }
> > [ 4362.981475] ide: failed opcode was: unknown
> > [ 4362.986183] hdd: drive not ready for command
>
> Ok, I tried the demo version you can download at
>
> http://www.nero.com/eng/nerolinux-prog.html
>
> and yes, nerolinux seems broken. I've never used it before, but it
> triggers:
>
> hda: irq timeout: status=0xc0 { Busy }
> ide: failed opcode was: unknown
>
> and after that there is indeed an endless stream of:
>
> hda: status error: status=0x58 { DriveReady SeekComplete DataRequest }
> ide: failed opcode was: unknown
> hda: drive not ready for command
>
> Which eventially switches to
>
> hda: status error: status=0x59 { DriveReady SeekComplete DataRequest
> Error }
> hda: status error: error=0x40 { LastFailedSense=0x04 }
> ide: failed opcode was: unknown
> hda: drive not ready for command
>
> However, it appears to be rather hard to debug, with nerolinux being some
> closed black box. Does anybody who knows nero know if there is some way to
> get debug information out of it to see what it tried to do?
>
> Can somebody try to bisect this?
>
> Linus
Unfortunately not me, Linus, sorry for my ignorance in those things.
But I will try rc7 and see whether this terrible bug is gone.
Regards
Uwe
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