2.6.29-rc1: Reported regressions from 2.6.28

2.6.29-rc1: Reported regressions from 2.6.28

[Rafael J. Wysocki]

[Notes:
* 2.6.29-rc1 is out so it's time for a regressions report.  At the moment there
  are not too many regressions from 2.6.28 listed.
* We've got quite a number of regressions from 2.6.27 reported against 2.6.28
  final recently.  For this reason, I'm going to continue reporting regressions
  introduced between 2.6.27 and 2.6.28.
* Regressions 2.6.26 -> 2.6.27 won't be listed any more.  There are only 6 of
  them left and they don't seem to be urgent.
]

This message contains a list of some regressions from 2.6.28, for which there
are no fixes in the mainline I know of.  If any of them have been fixed already,
please let me know.

If you know of any other unresolved regressions from 2.6.28, please let me know
either and I'll add them to the list.  Also, please let me know if any of the
entries below are invalid.

Each entry from the list will be sent additionally in an automatic reply to
this message with CCs to the people involved in reporting and handling the
issue.


Listed regressions statistics:

  Date          Total  Pending  Unresolved
  ----------------------------------------
  2009-01-11       13       13          10


Unresolved regressions
----------------------

Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=12422
Subject		: 2.6.28-git can't resume from str
Submitter	: Jeff Chua <jeff.chua.linux@gmail.com>
Date		: 2009-01-10 1:39 (2 days old)
References	: http://marc.info/?l=linux-kernel&m=123155157909282&w=4


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=12420
Subject		: WARNING: at drivers/ata/libata-sff.c:1017 ata_sff_hsm_move+0x45e/0x750()
Submitter	: Christian Borntraeger <borntraeger@de.ibm.com>
Date		: 2009-01-09 12:34 (3 days old)
First-Bad-Commit: http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=871af1210f13966ab911ed2166e4ab2ce775b99d
References	: http://marc.info/?l=linux-kernel&m=123150457832109&w=4


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=12419
Subject		: possible circular locking dependency on i915 dma
Submitter	: Wang Chen <wangchen@cn.fujitsu.com>
Date		: 2009-01-08 14:11 (4 days old)
References	: http://marc.info/?l=linux-kernel&m=123142399720125&w=4


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=12418
Subject		: Repeated ioctl(4, 0x40046445, ..) loop in glxgears
Submitter	: Pallipadi, Venkatesh <venkatesh.pallipadi@intel.com>
Date		: 2009-01-07 22:43 (5 days old)
First-Bad-Commit: http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=7c1c2871a6a3a114853ec6836e9035ac1c0c7f7a
References	: http://marc.info/?l=linux-kernel&m=123136836213319&w=4


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=12417
Subject		: glx performance drop with: "x86: PAT: implement track/untrack of pfnmap regions for x86 - v3"
Submitter	: Alexey Fisher <bug-track@fisher-privat.net>
Date		: 2009-01-06 18:46 (6 days old)
First-Bad-Commit: http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=5899329b19100c0b82dc78e9b21ed8b920c9ffb3
References	: http://marc.info/?l=linux-kernel&m=123126782822696&w=4
Handled-By	: Pallipadi, Venkatesh <venkatesh.pallipadi@intel.com>


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=12416
Subject		: Recent change to kernel spikes out ccache/distcc
Submitter	: Theodore Ts'o <tytso@mit.edu>
Date		: 2009-01-06 15:15 (6 days old)
References	: http://marc.info/?l=linux-kernel&m=123125495000603&w=4


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=12415
Subject		: WARNING: at drivers/net/wireless/iwlwifi/iwl-sta.c:689
Submitter	: Christian Borntraeger <borntraeger@de.ibm.com>
Date		: 2009-01-05 10:36 (7 days old)
References	: http://marc.info/?l=linux-wireless&m=123115178019082&w=4


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=12414
Subject		: iwl4965 cannot use "ap auto" on latest 2.6.28/29?
Submitter	: Jeff Chua <jeff.chua.linux@gmail.com>
Date		: 2009-01-05 4:13 (7 days old)
References	: http://marc.info/?l=linux-kernel&m=123112882127823&w=4


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=12402
Subject		: 2.6.29-rc: kernel BUG at fs/xfs/support/debug.c:108
Submitter	: Alexander Beregalov <a.beregalov@gmail.com>
Date		: 2009-01-09 04:41 (3 days old)
References	: http://thread.gmane.org/gmane.comp.file-systems.xfs.general/27548
Handled-By	: Christoph Hellwig <hch@infradead.org>


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=12399
Subject		: USB wakeup problem on Toshiba Portege R500
Submitter	: Rafael J. Wysocki <rjw@sisk.pl>
Date		: 2009-01-08 7:35 (4 days old)
First-Bad-Commit: http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=6fd9086a518d4f14213a32fe6c9ac17fabebbc1e
References	: http://marc.info/?l=linux-kernel&m=123140019117968&w=4


Regressions with patches
------------------------

Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=12428
Subject		: Build error on latest git
Submitter	: Petr Titera <P.Titera@century.cz>
Date		: 2009-01-11 9:49 (1 days old)
References	: http://marc.info/?l=linux-kernel&m=123166856318712&w=4
Handled-By	: Petr Titera <P.Titera@century.cz>
Patch		: http://marc.info/?l=linux-kernel&m=123167509024996&w=4


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=12427
Subject		: cpumask change causes sparc build bustage
Submitter	: David Miller <davem@davemloft.net>
Date		: 2009-01-11 8:31 (1 days old)
First-Bad-Commit: http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=588235bb53f2c215f0d4b08fd30b461fedc3338e
References	: http://marc.info/?l=linux-kernel&m=123166268013838&w=4
Handled-By	: David Miller <davem@davemloft.net>
Patch		: http://marc.info/?l=linux-kernel&m=123167571525706&w=4


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=12400
Subject		: git-latest: kernel oops in IOMMU setup
Submitter	: Dirk Hohndel <hohndel@infradead.org>
Date		: 2009-01-08 20:05 (4 days old)
References	: http://marc.info/?l=linux-kernel&m=123144520124853&w=4
Handled-By	: Dirk Hohndel <hohndel@infradead.org>
Patch		: http://marc.info/?l=linux-kernel&m=123152033725557&w=4


For details, please visit the bug entries and follow the links given in
references.

As you can see, there is a Bugzilla entry for each of the listed regressions.
There also is a Bugzilla entry used for tracking the regressions from 2.6.28,
unresolved as well as resolved, at:

http://bugzilla.kernel.org/show_bug.cgi?id=12398

Please let me know if there are any Bugzilla entries that should be added to
the list in there.

Thanks,
Rafael

Re: 2.6.29-rc1: Reported regressions from 2.6.28

[Jaswinder Singh Rajput]

[-- Attachment #1: Type: text/plain, Size: 827 bytes --]

On Sun, Jan 11, 2009 at 4:42 PM, Rafael J. Wysocki <rjw@sisk.pl> wrote:
>
> Regressions with patches
> ------------------------
>
> Bug-Entry       : http://bugzilla.kernel.org/show_bug.cgi?id=12428
> Subject         : Build error on latest git
> Submitter       : Petr Titera <P.Titera@century.cz>
> Date            : 2009-01-11 9:49 (1 days old)
> References      : http://marc.info/?l=linux-kernel&m=123166856318712&w=4
> Handled-By      : Petr Titera <P.Titera@century.cz>
> Patch           : http://marc.info/?l=linux-kernel&m=123167509024996&w=4
>
>

This is a wrong fix, asm/smp.h should only be included when CONFIG_SMP
is defined.

I am still in the process of cleaning non-smp data from asm/smp.h for x86

Attach patch is the solution for the time being

Ingo, can you please put this in urgent queue.

Thanks
--
JSR

[-- Attachment #2: 0001-x86-mpparse.c-fix-compilation-error.patch --]
[-- Type: application/octet-stream, Size: 747 bytes --]

From 8e7b0d4ea4458f9966c54551ac0bd79b34d5f935 Mon Sep 17 00:00:00 2001
From: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
Date: Sun, 11 Jan 2009 18:30:34 +0530
Subject: [PATCH] x86: mpparse.c fix compilation error

Impact: fix compilation error

Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
---
 arch/x86/kernel/mpparse.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/arch/x86/kernel/mpparse.c b/arch/x86/kernel/mpparse.c
index 8385d4e..79dae60 100644
--- a/arch/x86/kernel/mpparse.c
+++ b/arch/x86/kernel/mpparse.c
@@ -27,6 +27,7 @@
 #include <asm/e820.h>
 #include <asm/trampoline.h>
 #include <asm/setup.h>
+#include <asm/smp.h>
 
 #include <mach_apic.h>
 #ifdef CONFIG_X86_32
-- 
1.5.6.6

Re: 2.6.29-rc1: Reported regressions from 2.6.28

[Ingo Molnar]

* Rafael J. Wysocki <rjw@sisk.pl> wrote:

> Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=12420
> Subject		: WARNING: at drivers/ata/libata-sff.c:1017 ata_sff_hsm_move+0x45e/0x750()
> Submitter	: Christian Borntraeger <borntraeger@de.ibm.com>
> Date		: 2009-01-09 12:34 (3 days old)
> First-Bad-Commit: http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=871af1210f13966ab911ed2166e4ab2ce775b99d
> References	: http://marc.info/?l=linux-kernel&m=123150457832109&w=4

I can trigger it too and it is pretty much resolved - false positive 
WARN_ON() triggered by new (but correct) libata usage.

> Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=12417
> Subject		: glx performance drop with: "x86: PAT: implement track/untrack of pfnmap regions for x86 - v3"
> Submitter	: Alexey Fisher <bug-track@fisher-privat.net>
> Date		: 2009-01-06 18:46 (6 days old)
> First-Bad-Commit: http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=5899329b19100c0b82dc78e9b21ed8b920c9ffb3
> References	: http://marc.info/?l=linux-kernel&m=123126782822696&w=4
> Handled-By	: Pallipadi, Venkatesh <venkatesh.pallipadi@intel.com>

Should be solved by Venki's PAT fixes in tip/x86/urgent:

 0e95c19: x86, pat: fix reserve_memtype() for legacy 1MB range
 74edd61: x86 PAT: remove CPA WARN_ON for zero pte
 e722dc8: x86 PAT: ioremap_wc should take resource_size_t parameter
 b61e53c: x86 PAT: return compatible mapping to remap_pfn_range callers
 e104ba3: x86 PAT: change track_pfn_vma_new to take pgprot_t pointer param
 3cedb0d: x86 PAT: consolidate old memtype new memtype check into a function
 e61304a: x86 PAT: remove PFNMAP type on track_pfn_vma_new() error

Soon to be sent to Linus.

	Ingo

Re: 2.6.29-rc1: Reported regressions from 2.6.28

[Ingo Molnar]

* Jaswinder Singh Rajput <jaswinderlinux@gmail.com> wrote:

> On Sun, Jan 11, 2009 at 4:42 PM, Rafael J. Wysocki <rjw@sisk.pl> wrote:
> >
> > Regressions with patches
> > ------------------------
> >
> > Bug-Entry       : http://bugzilla.kernel.org/show_bug.cgi?id=12428
> > Subject         : Build error on latest git
> > Submitter       : Petr Titera <P.Titera@century.cz>
> > Date            : 2009-01-11 9:49 (1 days old)
> > References      : http://marc.info/?l=linux-kernel&m=123166856318712&w=4
> > Handled-By      : Petr Titera <P.Titera@century.cz>
> > Patch           : http://marc.info/?l=linux-kernel&m=123167509024996&w=4
> 
> This is a wrong fix, asm/smp.h should only be included when CONFIG_SMP 
> is defined.
> 
> I am still in the process of cleaning non-smp data from asm/smp.h for 
> x86
> 
> Attach patch is the solution for the time being
> 
> Ingo, can you please put this in urgent queue.

yes, it already is - see below.

	Ingo

----------------->
>From 8b5a33599c541cf5bf66304343d08ff2795d038b Mon Sep 17 00:00:00 2001
From: Jaswinder Singh Rajput <jaswinder@infradead.org>
Date: Sun, 11 Jan 2009 18:38:55 +0530
Subject: [PATCH] x86: fix mpparse.c build error on latest git

Fix this by reintroducing asm/smp.h include in mpparse.c - later on
I will fix this by removing non-smp data from smp.h.

Reported-by: Petr Titera <P.Titera@century.cz>
Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---
 arch/x86/kernel/mpparse.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/arch/x86/kernel/mpparse.c b/arch/x86/kernel/mpparse.c
index c0601c2..a649a4c 100644
--- a/arch/x86/kernel/mpparse.c
+++ b/arch/x86/kernel/mpparse.c
@@ -27,6 +27,7 @@
 #include <asm/e820.h>
 #include <asm/trampoline.h>
 #include <asm/setup.h>
+#include <asm/smp.h>
 
 #include <mach_apic.h>
 #ifdef CONFIG_X86_32

Re: 2.6.29-rc1: Reported regressions from 2.6.28

[Matthias Heinz]

Am Sonntag, 11. Januar 2009 schrieb Rafael J. Wysocki:
> If you know of any other unresolved regressions from 2.6.28, please let me
> know either and I'll add them to the list.  Also, please let me know if any
> of the entries below are invalid.

Unresolved regressions
----------------------

Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=12174
Subject		: No backlight control on Samsung x360

I think this is a common bug on systems with a broken(?) bios, exposing wrong 
driver names. With 2.6.27 it was at least possible to control the backlight 
over the NVID interface.

Re: 2.6.29-rc1: Reported regressions from 2.6.28

[Matthias Heinz]

Am Sonntag, 11. Januar 2009 schrieb Rafael J. Wysocki:
> If you know of any other unresolved regressions from 2.6.28, please let me
> know either and I'll add them to the list.  Also, please let me know if any
> of the entries below are invalid.

Unresolved regressions
----------------------

Bug-Entry       : http://bugzilla.kernel.org/show_bug.cgi?id=12174
Subject         : No backlight control on Samsung x360

I think this is a common bug on systems with a broken(?) bios, exposing wrong 
driver names. With 2.6.27 it was at least possible to control the backlight 
over the NVID interface.
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Re: 2.6.29-rc1: Reported regressions from 2.6.28

[Rafael J. Wysocki]

On Sunday 11 January 2009, Ingo Molnar wrote:
> 
> * Jaswinder Singh Rajput <jaswinderlinux@gmail.com> wrote:
> 
> > On Sun, Jan 11, 2009 at 4:42 PM, Rafael J. Wysocki <rjw@sisk.pl> wrote:
> > >
> > > Regressions with patches
> > > ------------------------
> > >
> > > Bug-Entry       : http://bugzilla.kernel.org/show_bug.cgi?id=12428
> > > Subject         : Build error on latest git
> > > Submitter       : Petr Titera <P.Titera@century.cz>
> > > Date            : 2009-01-11 9:49 (1 days old)
> > > References      : http://marc.info/?l=linux-kernel&m=123166856318712&w=4
> > > Handled-By      : Petr Titera <P.Titera@century.cz>
> > > Patch           : http://marc.info/?l=linux-kernel&m=123167509024996&w=4
> > 
> > This is a wrong fix, asm/smp.h should only be included when CONFIG_SMP 
> > is defined.
> > 
> > I am still in the process of cleaning non-smp data from asm/smp.h for 
> > x86
> > 
> > Attach patch is the solution for the time being
> > 
> > Ingo, can you please put this in urgent queue.
> 
> yes, it already is - see below.

Link to this patch was added to the bug entry.  Pleaes let me know or close the
bug when it's merged.

Thanks,
Rafael

Re: 2.6.29-rc1: Reported regressions from 2.6.28

[Jaswinder Singh Rajput]

Hello Rafael,

On Mon, Jan 12, 2009 at 12:30 AM, Rafael J. Wysocki <rjw-KKrjLPT3xs0@public.gmane.org> wrote:
> On Sunday 11 January 2009, Ingo Molnar wrote:
>>
>> * Jaswinder Singh Rajput <jaswinderlinux-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote:
>>
>> > On Sun, Jan 11, 2009 at 4:42 PM, Rafael J. Wysocki <rjw-KKrjLPT3xs0@public.gmane.org> wrote:
>> > >
>> > > Regressions with patches
>> > > ------------------------
>> > >
>> > > Bug-Entry       : http://bugzilla.kernel.org/show_bug.cgi?id=12428
>> > > Subject         : Build error on latest git
>> > > Submitter       : Petr Titera <P.Titera-0E4lWjIyFdTrBKCeMvbIDA@public.gmane.org>
>> > > Date            : 2009-01-11 9:49 (1 days old)
>> > > References      : http://marc.info/?l=linux-kernel&m=123166856318712&w=4
>> > > Handled-By      : Petr Titera <P.Titera-0E4lWjIyFdTrBKCeMvbIDA@public.gmane.org>
>> > > Patch           : http://marc.info/?l=linux-kernel&m=123167509024996&w=4
>> >
>> > This is a wrong fix, asm/smp.h should only be included when CONFIG_SMP
>> > is defined.
>> >
>> > I am still in the process of cleaning non-smp data from asm/smp.h for
>> > x86
>> >
>> > Attach patch is the solution for the time being
>> >
>> > Ingo, can you please put this in urgent queue.
>>
>> yes, it already is - see below.
>
> Link to this patch was added to the bug entry.  Pleaes let me know or close the
> bug when it's merged.
>

http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=4884d8e6a05026ec906355436cea9dc1acb1d09e

--
JSR

Re: 2.6.29-rc1: Reported regressions from 2.6.28

[Rafael J. Wysocki]

On Tuesday 13 January 2009, Jaswinder Singh Rajput wrote:
> Hello Rafael,
> 
> On Mon, Jan 12, 2009 at 12:30 AM, Rafael J. Wysocki <rjw@sisk.pl> wrote:
> > On Sunday 11 January 2009, Ingo Molnar wrote:
> >>
> >> * Jaswinder Singh Rajput <jaswinderlinux@gmail.com> wrote:
> >>
> >> > On Sun, Jan 11, 2009 at 4:42 PM, Rafael J. Wysocki <rjw@sisk.pl> wrote:
> >> > >
> >> > > Regressions with patches
> >> > > ------------------------
> >> > >
> >> > > Bug-Entry       : http://bugzilla.kernel.org/show_bug.cgi?id=12428
> >> > > Subject         : Build error on latest git
> >> > > Submitter       : Petr Titera <P.Titera@century.cz>
> >> > > Date            : 2009-01-11 9:49 (1 days old)
> >> > > References      : http://marc.info/?l=linux-kernel&m=123166856318712&w=4
> >> > > Handled-By      : Petr Titera <P.Titera@century.cz>
> >> > > Patch           : http://marc.info/?l=linux-kernel&m=123167509024996&w=4
> >> >
> >> > This is a wrong fix, asm/smp.h should only be included when CONFIG_SMP
> >> > is defined.
> >> >
> >> > I am still in the process of cleaning non-smp data from asm/smp.h for
> >> > x86
> >> >
> >> > Attach patch is the solution for the time being
> >> >
> >> > Ingo, can you please put this in urgent queue.
> >>
> >> yes, it already is - see below.
> >
> > Link to this patch was added to the bug entry.  Pleaes let me know or close the
> > bug when it's merged.
> >
> 
> http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=4884d8e6a05026ec906355436cea9dc1acb1d09e

Thanks, the bug has been closed.

Rafael