Re: [2/2] 2.6.23-rc2: known regressions with patches

Re: [2/2] 2.6.23-rc2: known regressions with patches

[Michal Piotrowski]

Hi all,

Here is a list of some known regressions in 2.6.23-rc2
with patches available.

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

List of Aces

Name                    Regressions fixed since 21-Jun-2007
Adrian Bunk                            6
Andi Kleen                             4
Andrew Morton                          4
Linus Torvalds                         4
Al Viro                                3
Cornelia Huck                          3
Jens Axboe                             3
Tejun Heo                              3
David Woodhouse                        2
Hugh Dickins                           2
Trent Piepho                           2



Memory management

Subject         : [bug] SLUB & freeing locks
References      : http://lkml.org/lkml/2007/7/26/90
Last known good : ?
Submitter       : Ingo Molnar <mingo@elte.hu>
Caused-By       : ?
Handled-By      : Peter Zijlstra <peterz@infradead.org>
Patch           : http://lkml.org/lkml/2007/7/26/97
Status          : patch available



Modpost

Subject         : modpost bug breaks ia64 cross compilation
References      : http://lkml.org/lkml/2007/7/27/30
                  http://lkml.org/lkml/2007/7/27/418
Last known good : ?
Submitter       : Jan Dittmer <jdi@l4x.org>
Caused-By       : Thomas Renninger <trenn@suse.de>
                  commit 29b71a1ca74491fab9fed09e9d835d840d042690
Handled-By      : ?
Patch           : http://lkml.org/lkml/2007/8/2/211
Status          : patch was suggested



Networking

Subject         : tg3 dead after s2ram
References      : http://lkml.org/lkml/2007/7/31/121
Last known good : ?
Submitter       : Joachim Deguara <joachim.deguara@amd.com>
Caused-By       : ?
Handled-By      : Michael Chan <mchan@broadcom.com>
Patch           : http://lkml.org/lkml/2007/8/2/288
Status          : patch available



SCSI

Subject         : qla2xyz broken in current Linus tree
References      : http://marc.info/?l=linux-scsi&m=118581420308892&w=2
Last known good : ?
Submitter       : Matthew Wilcox <matthew@wil.cx>
Caused-By       : Seokmann Ju <seokmann.ju@qlogic.com>
                  commit 281afe1947d855661754850de29d7530b2ff
Handled-By      : Seokmann Ju <seokmann.ju@qlogic.com>
Patch           : http://marc.info/?l=linux-scsi&m=118581884800073&w=2
Status          : patch available



Regards,
Michal

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Re: [2/2] 2.6.23-rc2: known regressions with patches

[Thomas Renninger]

On Sun, 2007-08-05 at 18:26 +0200, Michal Piotrowski wrote:
> Hi all,

> Modpost
> 
> Subject         : modpost bug breaks ia64 cross compilation
> References      : http://lkml.org/lkml/2007/7/27/30
>                   http://lkml.org/lkml/2007/7/27/418
> Last known good : ?
> Submitter       : Jan Dittmer <jdi@l4x.org>
> Caused-By       : Thomas Renninger <trenn@suse.de>
>                   commit 29b71a1ca74491fab9fed09e9d835d840d042690
> Handled-By      : ?
> Patch           : http://lkml.org/lkml/2007/8/2/211
> Status          : patch was suggested

A patch was sent to Tony. AFAIK it got accepted, not sure whether it
already is in any and which git tree...

> Networking
> 
> Subject         : tg3 dead after s2ram
> References      : http://lkml.org/lkml/2007/7/31/121
> Last known good : ?
> Submitter       : Joachim Deguara <joachim.deguara@amd.com>
> Caused-By       : ?
> Handled-By      : Michael Chan <mchan@broadcom.com>
> Patch           : http://lkml.org/lkml/2007/8/2/288
> Status          : patch available
> 
David Miller sent a message that it got applied.

Thanks,

   Thomas

Re: [2/2] 2.6.23-rc2: known regressions with patches

[Ingo Molnar]

* Michal Piotrowski <michal.k.k.piotrowski@gmail.com> wrote:

> Memory management
> 
> Subject         : [bug] SLUB & freeing locks
> References      : http://lkml.org/lkml/2007/7/26/90
> Last known good : ?
> Submitter       : Ingo Molnar <mingo@elte.hu>
> Caused-By       : ?
> Handled-By      : Peter Zijlstra <peterz@infradead.org>
> Patch           : http://lkml.org/lkml/2007/7/26/97
> Status          : patch available

fixed by commit 2208b764c14d0f1ad63da64b1a42db6077b6fe42.

	Ingo

RE: [2/2] 2.6.23-rc2: known regressions with patches

[Luck, Tony]

> > Caused-By       : Thomas Renninger <trenn@suse.de>
> >                   commit 29b71a1ca74491fab9fed09e9d835d840d042690

> A patch was sent to Tony. AFAIK it got accepted, not sure whether it
> already is in any and which git tree...

The suggested patch adds manual padding to the acpi_device_id structure
definition in include/linux/mod_devicetable.h  I didn't take it, and it
appears that nobody else did either.  It is not in Linus' tree (as of 2.6.23-rc2).

I expressed doubts about whether this is the right fix.  The problem
is that when cross-compiling a locally compiled utility makes a size &
alignment check.  This is bogus.  We shouldn't care whether this structure
compiles to the same size/alignment as the kernel that will use on the
target platform.

Is fixing this the right way (make the scripts/mod/file2alias.c understand
target alignment rules in a cross environment) just too hideous to
contemplate ... and we should just sacrifice 7 bytes of padding in
order to keep life simple?

-Tony