[1/2] 2.6.22-rc6: known regressions v2

[1/2] 2.6.22-rc6: known regressions v2

[Michal Piotrowski]

Hi all,

Here is a list of some known regressions in 2.6.22-rc6.

Feel free to add new regressions/remove fixed etc.
http://kernelnewbies.org/known_regressions

List of Aces

Name                    Regressions fixed since 21-Jun-2007
Hugh Dickins                           2
Andi Kleen                             1
Björn Steinbrink                       1
Bjorn Helgaas                          1
Jean Delvare                           1
Olaf Hering                            1
Siddha, Suresh B                       1
Trent Piepho                           1
Ville Syrjälä                          1



Unclassified

Subject    : Kernel hang on CMOS_READ
References : http://lkml.org/lkml/2007/6/3/138
Submitter  : Rodrigo Luiz <troops.of.doom@gmail.com>
Status     : Unknown



ALSA

Subject    : snd-aoa causes badness in lib/kref.c:33
References : http://bugzilla.kernel.org/show_bug.cgi?id=8513
Submitter  : Ben Collins <bcollins@ubuntu.com>
Handled-By : Takashi Iwai <tiwai@suse.de>
Status     : Unknown



FS

Subject    : 2.6.22-rc4-git5 reiserfs: null ptr deref.
References : http://lkml.org/lkml/2007/6/13/322
Submitter  : Randy Dunlap <randy.dunlap@oracle.com>
Handled-By : Vladimir V. Saveliev <vs@namesys.com>
Status     : problem is being debugged



IDE

Subject    : 2.6.22-rcX: hda: lost interrupt
References : http://lkml.org/lkml/2007/6/29/121
Submitter  : David Chinner <dgc@sgi.com>
Status     : unknown



SATA/PATA

Subject    : libata IT821X driver still fails! Hard-freezes system
References : http://lkml.org/lkml/2007/6/14/82
Submitter  : Rodney Gordon II <meff@spherevision.org>
Status     : unknown



Regards,
Michal

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Re: [1/2] 2.6.22-rc6: known regressions v2

[Alan Cox]

> SATA/PATA
> 
> Subject    : libata IT821X driver still fails! Hard-freezes system
> References : http://lkml.org/lkml/2007/6/14/82
> Submitter  : Rodney Gordon II <meff@spherevision.org>
> Status     : unknown

Not a regression as it seems this user's box has always been broken. I've
been running heavy testing with 2.6.22rc6 and IT8212 and its working
reliably for the "dumb" mode in question.

The hardware mode needs a fix Tejun has queued somewhere (probably in
Jeff's vast backlog) and then works too.

I'm not even sure this report is IT8212 related rather than just an IRQ
storm

Re: [1/2] 2.6.22-rc6: known regressions v2

[Sergei Shtylyov]

Hello.

Michal Piotrowski wrote:

> IDE

> Subject    : 2.6.22-rcX: hda: lost interrupt
> References : http://lkml.org/lkml/2007/6/29/121
> Submitter  : David Chinner <dgc@sgi.com>
> Status     : unknown

> Probing IDE interface ide0...
> hda: probing with STATUS(0xa0) instead of ALTSTATUS(0x58)

   Ugh, 0xa0 is the device/head register's value, not the status register's!
I'd suppose that I/O space was borken in some funny way, however, it would be 
hard top expect form x86 which should be prone to endiannes blues...

MBR, Sergei

Re: [1/2] 2.6.22-rc6: known regressions v2

[Chuck Ebbert]

On 06/29/2007 12:59 PM, Alan Cox wrote:
>> SATA/PATA
>>
>> Subject    : libata IT821X driver still fails! Hard-freezes system
>> References : http://lkml.org/lkml/2007/6/14/82
>> Submitter  : Rodney Gordon II <meff@spherevision.org>
>> Status     : unknown
> 
> Not a regression as it seems this user's box has always been broken. I've
> been running heavy testing with 2.6.22rc6 and IT8212 and its working
> reliably for the "dumb" mode in question.
> 
> The hardware mode needs a fix Tejun has queued somewhere (probably in
> Jeff's vast backlog) and then works too.
> 
> I'm not even sure this report is IT8212 related rather than just an IRQ
> storm

Why does the driver report "irq 0"?

ata7: PATA max UDMA/133 cmd <blah> ctl <blah> bmdma <blah> irq 0  <====

Above that, the ACPI layer says it assigned IRQ 20

Re: [1/2] 2.6.22-rc6: known regressions v2

[Michal Piotrowski]

On 29/06/07, Alan Cox <alan@lxorguk.ukuu.org.uk> wrote:
> > SATA/PATA
> >
> > Subject    : libata IT821X driver still fails! Hard-freezes system
> > References : http://lkml.org/lkml/2007/6/14/82
> > Submitter  : Rodney Gordon II <meff@spherevision.org>
> > Status     : unknown
>
> Not a regression as it seems this user's box has always been broken.

I removed this bug from the kr list.

Regards,
Michal

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Re: [1/2] 2.6.22-rc6: known regressions v2

[Alan Cox]

> > I'm not even sure this report is IT8212 related rather than just an IRQ
> > storm
> 
> Why does the driver report "irq 0"?
> 
> ata7: PATA max UDMA/133 cmd <blah> ctl <blah> bmdma <blah> irq 0  <====
> 
> Above that, the ACPI layer says it assigned IRQ 20

Because the libata core code in 2.6.22rc6 reports all the ports and IRQ
values wrongly ?

Alan

Re: [1/2] 2.6.22-rc6: known regressions v2

[Jeff Garzik]

Alan Cox wrote:
>>> I'm not even sure this report is IT8212 related rather than just an IRQ
>>> storm
>> Why does the driver report "irq 0"?
>>
>> ata7: PATA max UDMA/133 cmd <blah> ctl <blah> bmdma <blah> irq 0  <====
>>
>> Above that, the ACPI layer says it assigned IRQ 20
> 
> Because the libata core code in 2.6.22rc6 reports all the ports and IRQ
> values wrongly ?

AFAIK that was fixed, for IRQ.  Please point out examples where it 
remains broken...

	Jeff

Re: [1/2] 2.6.22-rc6: known regressions v2

[Alan Cox]

On Fri, 29 Jun 2007 14:10:49 -0400
Jeff Garzik <jeff@garzik.org> wrote:

> Alan Cox wrote:
> >>> I'm not even sure this report is IT8212 related rather than just an IRQ
> >>> storm
> >> Why does the driver report "irq 0"?
> >>
> >> ata7: PATA max UDMA/133 cmd <blah> ctl <blah> bmdma <blah> irq 0  <====
> >>
> >> Above that, the ACPI layer says it assigned IRQ 20
> > 
> > Because the libata core code in 2.6.22rc6 reports all the ports and IRQ
> > values wrongly ?
> 
> AFAIK that was fixed, for IRQ.  Please point out examples where it 
> remains broken...

2.6.22-rc6 it is broken, for all the systems I've looked at, as are the
port numbers. Tejun posted fixes for the IRQ but they do not seem to have
been applied, or if they were it was post -rc6 to a git tree.

Alan

Re: [1/2] 2.6.22-rc6: known regressions v2

[Jeff Garzik]

Alan Cox wrote:
> On Fri, 29 Jun 2007 14:10:49 -0400
> Jeff Garzik <jeff@garzik.org> wrote:
> 
>> Alan Cox wrote:
>>>>> I'm not even sure this report is IT8212 related rather than just an IRQ
>>>>> storm
>>>> Why does the driver report "irq 0"?
>>>>
>>>> ata7: PATA max UDMA/133 cmd <blah> ctl <blah> bmdma <blah> irq 0  <====
>>>>
>>>> Above that, the ACPI layer says it assigned IRQ 20
>>> Because the libata core code in 2.6.22rc6 reports all the ports and IRQ
>>> values wrongly ?
>> AFAIK that was fixed, for IRQ.  Please point out examples where it 
>> remains broken...
> 
> 2.6.22-rc6 it is broken, for all the systems I've looked at, as are the
> port numbers. Tejun posted fixes for the IRQ but they do not seem to have
> been applied, or if they were it was post -rc6 to a git tree.


I've seen the patch that eventually became 
22888423b3b1b96573250671afb5b72ea4364902 from Olof Johansson but nothing 
from Tejun on the subject.

	Jeff