[Bug #12155] Regression in 2.6.28-rc and 2.6.27-stable - hibernate related

[Bug #12155] Regression in 2.6.28-rc and 2.6.27-stable - hibernate related

[Rafael J. Wysocki]

This message has been generated automatically as a part of a report
of recent regressions.

The following bug entry is on the current list of known regressions
from 2.6.27.  Please verify if it still should be listed and let me know
(either way).


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=12155
Subject		: Regression in 2.6.28-rc and 2.6.27-stable - hibernate related
Submitter	: Fabio Comolli <fabio.comolli-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
Date		: 2008-11-23 16:17 (11 days old)
References	: http://marc.info/?l=linux-kernel&m=122745709926361&w=4

Re: [Bug #12155] Regression in 2.6.28-rc and 2.6.27-stable - hibernate related

[Fabio Comolli]

Hi.

On Wed, Dec 3, 2008 at 10:58 PM, Rafael J. Wysocki <rjw-KKrjLPT3xs0@public.gmane.org> wrote:
> This message has been generated automatically as a part of a report
> of recent regressions.
>
> The following bug entry is on the current list of known regressions
> from 2.6.27.  Please verify if it still should be listed and let me know
> (either way).
>
>
> Bug-Entry       : http://bugzilla.kernel.org/show_bug.cgi?id=12155
> Subject         : Regression in 2.6.28-rc and 2.6.27-stable - hibernate related
> Submitter       : Fabio Comolli <fabio.comolli-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
> Date            : 2008-11-23 16:17 (11 days old)
> References      : http://marc.info/?l=linux-kernel&m=122745709926361&w=4
>

Unfortunately I don't have much time to test but yes, it was present
last time I tried.
I'll try -rc7-git probably tonight and 2.6.27.8 when -stable team releases it.

Re: [Bug #12155] Regression in 2.6.28-rc and 2.6.27-stable - hibernate related

[Fabio Comolli]

Hi Rafael.

On Thu, Dec 4, 2008 at 9:50 AM, Fabio Comolli <fabio.comolli-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote:
> Hi.
>
> I'll try -rc7-git probably tonight and 2.6.27.8 when -stable team releases it.
>

2.6.28-rc7 survived 7 suspend/resume cycles and then showed the bug.
This time I modified my config to use the timed printk's. This is the
output:

[ 8831.905901] Syncing filesystems ... done.
[ 8831.906707] Freezing user space processes ... (elapsed 0.00 seconds) done.
[ 8831.907860] Freezing remaining freezable tasks ... (elapsed 0.00
seconds) done.
[ 8831.909257] PM: Shrinking memory... done (0 pages freed)
[ 8831.975535] PM: Freed 0 kbytes in 0.06 seconds (0.00 MB/s)
[ 8831.975558] Suspending console(s) (use no_console_suspend to debug)
[ 8831.976131] sd 0:0:0:0: [sda] Synchronizing SCSI cache
[ 8832.041534] pciehp 0000:00:1c.0:pcie02: pciehp_suspend ENTRY
[ 8832.041755] ACPI handle has no context!
[ 8832.041765] tifm_7xx1 0000:06:06.3: PCI INT A disabled
[ 8832.041773] ACPI handle has no context!
[ 8832.056238] ACPI handle has no context!
[ 8832.072271] eth1: Going into suspend...
[ 8832.078493] ipw2200 0000:06:05.0: PCI INT A disabled
[ 8832.078502] ACPI handle has no context!
[ 8832.092042] [fglrx] Power down the ASIC .
[ 8832.144044] fglrx_pci 0000:01:00.0: PCI INT A disabled
[ 8832.144155] ata2: port disabled. ignoring.
[ 8832.144211] ata_piix 0000:00:1f.1: PCI INT A disabled
[ 8832.144606] Intel ICH 0000:00:1e.2: PCI INT A disabled
[ 8832.144743] ehci_hcd 0000:00:1d.7: PCI INT A disabled
[ 8832.144783] uhci_hcd 0000:00:1d.3: PCI INT D disabled
[ 8832.144822] uhci_hcd 0000:00:1d.2: PCI INT C disabled
[ 8832.144860] uhci_hcd 0000:00:1d.1: PCI INT B disabled
[ 8832.144899] uhci_hcd 0000:00:1d.0: PCI INT A disabled
[ 8832.144903] pciehp 0000:00:1c.0:pcie02: pciehp_suspend ENTRY
[ 8832.145347] ACPI: Preparing to enter system sleep state S4
[ 8832.147058] PM: Creating hibernation image:
[ 8832.148005] PM: Need to copy 169684 pages
[ 8832.148005] Intel machine check architecture supported.
[ 8832.148005] Intel machine check reporting enabled on CPU#0.
[ 9073.757209] Force enabled HPET at resume
[ 9073.757323] ACPI: Waking up from system sleep state S4
[ 9073.757352] ACPI: EC: non-query interrupt received, switching to
interrupt mode
[ 9073.757352] pcieport-driver 0000:00:01.0: setting latency timer to 64
[ 9073.757352] pcieport-driver 0000:00:1c.0: setting latency timer to 64
[ 9073.757352] pciehp 0000:00:1c.0:pcie02: pciehp_resume ENTRY
[ 9073.757352] uhci_hcd 0000:00:1d.0: PCI INT A -> GSI 23 (level, low) -> IRQ 23
[ 9073.757352] uhci_hcd 0000:00:1d.0: setting latency timer to 64
[ 9073.757352] uhci_hcd 0000:00:1d.1: PCI INT B -> GSI 19 (level, low) -> IRQ 19
[ 9073.757352] uhci_hcd 0000:00:1d.1: setting latency timer to 64
[ 9073.757352] uhci_hcd 0000:00:1d.2: PCI INT C -> GSI 18 (level, low) -> IRQ 18
[ 9073.757352] uhci_hcd 0000:00:1d.2: setting latency timer to 64
[ 9073.757352] uhci_hcd 0000:00:1d.3: PCI INT D -> GSI 16 (level, low) -> IRQ 16
[ 9073.757352] uhci_hcd 0000:00:1d.3: setting latency timer to 64
[ 9073.757352] ehci_hcd 0000:00:1d.7: PCI INT A -> GSI 23 (level, low) -> IRQ 23
[ 9073.757352] ehci_hcd 0000:00:1d.7: setting latency timer to 64
[ 9073.757352] pci 0000:00:1e.0: setting latency timer to 64
[ 9073.757352] Intel ICH 0000:00:1e.2: PCI INT A -> GSI 17 (level,
low) -> IRQ 17
[ 9073.757352] Intel ICH 0000:00:1e.2: setting latency timer to 64
[ 9073.757352] ata_piix 0000:00:1f.1: restoring config space at offset
0x1 (was 0x2880001, writing 0x2880005)
[ 9073.757352] ata_piix 0000:00:1f.1: PCI INT A -> GSI 18 (level, low) -> IRQ 18
[ 9073.757352] ata_piix 0000:00:1f.1: setting latency timer to 64
[ 9073.757352] ata2: port disabled. ignoring.
[ 9073.757352] fglrx_pci 0000:01:00.0: power state changed by ACPI to D0
[ 9073.757352] fglrx_pci 0000:01:00.0: PCI INT A -> GSI 16 (level,
low) -> IRQ 16
[ 9073.757352] fglrx_pci 0000:01:00.0: setting latency timer to 64
[ 9073.757352] [fglrx] Power up the ASIC
[ 9073.757352] eth1: Coming out of suspend...
[ 9073.757352] ipw2200 0000:06:05.0: enabling device (0000 -> 0002)
[ 9073.757352] ipw2200 0000:06:05.0: PCI INT A -> GSI 20 (level, low) -> IRQ 20
[ 9073.757352] ipw2200 0000:06:05.0: restoring config space at offset
0xf (was 0x18030100, writing 0x1803010b)
[ 9073.757352] ipw2200 0000:06:05.0: restoring config space at offset
0x4 (was 0x0, writing 0xc8206000)
[ 9073.757352] ipw2200 0000:06:05.0: restoring config space at offset
0x3 (was 0x0, writing 0x8008)
[ 9073.757352] ipw2200 0000:06:05.0: restoring config space at offset
0x1 (was 0x2900002, writing 0x2900116)
[ 9073.757352] ata1.01: ACPI cmd ef/03:0c:00:00:00:b0 filtered out
[ 9073.757352] ata1.01: ACPI cmd ef/03:22:00:00:00:b0 filtered out
[ 9073.757352] ata1.00: ACPI cmd ef/03:0c:00:00:00:a0 filtered out
[ 9073.757352] ata1.00: ACPI cmd ef/03:45:00:00:00:a0 filtered out
[ 9073.757352] ata1.00: configured for UDMA/100
[ 9073.757352] ata1.01: configured for MWDMA2
[ 9073.757352] sd 0:0:0:0: [sda] 156301488 512-byte hardware sectors:
(80.0 GB/74.5 GiB)
[ 9073.757352] sd 0:0:0:0: [sda] Write Protect is off
[ 9073.757352] sd 0:0:0:0: [sda] Mode Sense: 00 3a 00 00
[ 9073.757352] sd 0:0:0:0: [sda] Write cache: enabled, read cache:
enabled, doesn't support DPO or FUA
[ 9073.757352] sd 0:0:0:0: [sda] 156301488 512-byte hardware sectors:
(80.0 GB/74.5 GiB)
[ 9073.757352] sd 0:0:0:0: [sda] Write Protect is off
[ 9073.757352] sd 0:0:0:0: [sda] Mode Sense: 00 3a 00 00
[ 9073.757352] sd 0:0:0:0: [sda] Write cache: enabled, read cache:
enabled, doesn't support DPO or FUA
[ 9073.757352] firewire_ohci 0000:06:06.2: restoring config space at
offset 0xf (was 0x4020300, writing 0x402030b)
[ 9073.757352] firewire_ohci 0000:06:06.2: restoring config space at
offset 0x5 (was 0x0, writing 0xc8200000)
[ 9073.757352] firewire_ohci 0000:06:06.2: restoring config space at
offset 0x4 (was 0x0, writing 0xc8208000)
[ 9073.757352] firewire_ohci 0000:06:06.2: restoring config space at
offset 0x3 (was 0x800000, writing 0x808008)
[ 9073.757352] firewire_ohci 0000:06:06.2: restoring config space at
offset 0x1 (was 0x2100000, writing 0x2100116)
[ 9073.757352] tifm_7xx1 0000:06:06.3: restoring config space at
offset 0xf (was 0x40701ff, writing 0x407010a)
[ 9073.757352] tifm_7xx1 0000:06:06.3: restoring config space at
offset 0x4 (was 0x0, writing 0xc8204000)
[ 9073.757352] tifm_7xx1 0000:06:06.3: restoring config space at
offset 0x3 (was 0x800000, writing 0x808008)
[ 9073.757352] tifm_7xx1 0000:06:06.3: restoring config space at
offset 0x1 (was 0x2100000, writing 0x2100106)
[ 9073.757352] tifm_7xx1 0000:06:06.3: PCI INT A -> GSI 22 (level,
low) -> IRQ 22
[ 9073.757352] pciehp 0000:00:1c.0:pcie02: pciehp_resume ENTRY
[ 9073.757352] sd 0:0:0:0: [sda] Starting disk
[ 9073.757352] Restarting tasks ... done.

Unfortunately I can see nothing wrong in this log, it's basically
identical to the good resume case.

The hang lasted 3min 57sec, just for the record.

Regards,
Fabio

Re: [Bug #12155] Regression in 2.6.28-rc and 2.6.27-stable - hibernate related

[Fabio Comolli]

Hi.

On Sat, Dec 6, 2008 at 9:08 PM, Fabio Comolli <fabio.comolli-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote:
> Hi Rafael.
>
> On Thu, Dec 4, 2008 at 9:50 AM, Fabio Comolli <fabio.comolli-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote:
>> Hi.
>>
>> I'll try -rc7-git probably tonight and 2.6.27.8 when -stable team releases it.
>>
>
> 2.6.28-rc7 survived 7 suspend/resume cycles and then showed the bug.

2.6.27.8 got me really scared. After the resume and the usual hang, my
hard disk did not recover and my rootfilesystem's journal aborted. Of
course I don't have messages to post as the rootfs was at this point
mounted readonly. I read those info from dmesg.

I went back to my dear 2.6.27.4 which is stable and never caused me
any problems.

Unless someone jumps in with some ideas, I'm not going to do testings
anymore. I can't lose my only machine because of this.

Regards,
Fabio

Re: [Bug #12155] Regression in 2.6.28-rc and 2.6.27-stable - hibernate related

[Rafael J. Wysocki]

On Sunday, 7 of December 2008, Fabio Comolli wrote:
> Hi.
> 
> On Sat, Dec 6, 2008 at 9:08 PM, Fabio Comolli <fabio.comolli-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote:
> > Hi Rafael.
> >
> > On Thu, Dec 4, 2008 at 9:50 AM, Fabio Comolli <fabio.comolli-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote:
> >> Hi.
> >>
> >> I'll try -rc7-git probably tonight and 2.6.27.8 when -stable team releases it.
> >>
> >
> > 2.6.28-rc7 survived 7 suspend/resume cycles and then showed the bug.
> 
> 2.6.27.8 got me really scared. After the resume and the usual hang, my
> hard disk did not recover and my rootfilesystem's journal aborted. Of
> course I don't have messages to post as the rootfs was at this point
> mounted readonly. I read those info from dmesg.
> 
> I went back to my dear 2.6.27.4 which is stable and never caused me
> any problems.
> 
> Unless someone jumps in with some ideas, I'm not going to do testings
> anymore. I can't lose my only machine because of this.

OK, thanks for the testing so far.

Please just ignore the subsequent automatic messages about this regression.

Thanks,
Rafael

2.6.28-rc8-git5: Reported regressions from 2.6.27

[Rafael J. Wysocki]

This message contains a list of some regressions from 2.6.27, 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 2.6.27, 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
  ----------------------------------------
  2008-12-07      106       20          17
  2008-12-04      106       29          21
  2008-11-22       93       25          15
  2008-11-16       89       32          18
  2008-11-09       73       40          27
  2008-11-02       55       41          29
  2008-10-25       26       25          20


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

Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=12178
Subject		: Xorg crash at first start
Submitter	: Cédric Godin <cedric-x1Cn44Nr1HaZIoH1IeqzKA@public.gmane.org>
Date		: 2008-12-04 14:26 (4 days old)
First-Bad-Commit: http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=52440211dcdc52c0b757f8b34d122e11b12cdd50
References	: http://marc.info/?l=linux-kernel&m=122840082828098&w=4


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=12161
Subject		: [i915 drm] irq 16: nobody cared with latest git kernels
Submitter	: fredi ml <mailinglists.fredi-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
Date		: 2008-12-02 13:26 (6 days old)
References	: http://marc.info/?l=linux-kernel&m=122822444615724&w=4


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=12160
Subject		: networking oops after resume from s2ram (2.6.28-rc6)
Submitter	: Marcin Slusarz <marcin.slusarz-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
Date		: 2008-11-28 21:15 (10 days old)
References	: http://marc.info/?l=linux-kernel&m=122790701615723&w=4


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=12159
Subject		: 2.6.28-rc6-git1 -- No sound produced from Intel HDA ALSA driver
Submitter	: Miles Lane <miles.lane-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
Date		: 2008-11-27 20:33 (11 days old)
References	: http://marc.info/?l=linux-kernel&m=122781805620212&w=4
Handled-By	: Takashi Iwai <tiwai-l3A5Bk7waGM@public.gmane.org>


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=12158
Subject		: commit b1ee26b freezes system on switching from X to text console
Submitter	: Gaudenz Steinlin <gaudenz-8fiUuRrzOP0dnm+yROfE0A@public.gmane.org>
Date		: 2008-11-25 19:44 (13 days old)
First-Bad-Commit: http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=b1ee26bab14886350ba12a5c10cbc0696ac679bf
References	: http://marc.info/?l=linux-kernel&m=122764344231140&w=4
Handled-By	: Benjamin Herrenschmidt <benh-XVmvHMARGAS8U2dJNN8I7kB+6BGkLq7r@public.gmane.org>


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=12156
Subject		: v2.6.28-rc2: x86_32 relocation regression?
Submitter	: Vegard Nossum <vegard.nossum-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
Date		: 2008-11-24 21:19 (14 days old)
References	: http://marc.info/?l=linux-kernel&m=122756158220966&w=4


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=12155
Subject		: Regression in 2.6.28-rc and 2.6.27-stable - hibernate related
Submitter	: Fabio Comolli <fabio.comolli-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
Date		: 2008-11-23 16:17 (15 days old)
References	: http://marc.info/?l=linux-kernel&m=122745709926361&w=4


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=12152
Subject		: Huge wakeups number from i1915
Submitter	: Yves-Alexis Perez <corsac-8fiUuRrzOP0dnm+yROfE0A@public.gmane.org>
Date		: 2008-12-02 16:48 (6 days old)
References	: http://marc.info/?l=linux-acpi&m=122823656702994&w=4


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=12100
Subject		: resume (S2R) broken by Intel microcode module, on A110L
Submitter	: Andreas Mohr <andi-5+Cda9B46AM@public.gmane.org>
Date		: 2008-11-25 08:48 (13 days old)


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=12061
Subject		: snd_hda_intel: power_save: sound cracks on powerdown
Submitter	: Jens Weibler <bugzilla-kernel-6hJTtV8wudIr9FUcG+3rRQ@public.gmane.org>
Date		: 2008-11-18 12:07 (20 days old)
Handled-By	: Takashi Iwai <tiwai-l3A5Bk7waGM@public.gmane.org>


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=12034
Subject		: snd-hda-intel on Realtek ALC268 chip shows only Master volume (for playback)
Submitter	: Sergey <azure-IGUVrPOATOfsG83rWm+8vg@public.gmane.org>
Date		: 2008-11-15 04:20 (23 days old)
Handled-By	: Takashi Iwai <tiwai-l3A5Bk7waGM@public.gmane.org>


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=12028
Subject		: i915 DRM is broken in 2.6.28-rc4
Submitter	: Adam Tkac <vonsch-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
Date		: 2008-11-14 01:50 (24 days old)


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=11958
Subject		: [2.6.27.x =&gt; 2.6.28-rc3] Xorg crash with xf86MapVidMem error
Submitter	: Tomasz Chmielewski <tch-Nem3ZqsbT/g@public.gmane.org>
Date		: 2008-11-05 05:37 (33 days old)


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=11947
Subject		: 2.6.28-rc VC switching with Intel graphics broken
Submitter	: Romano Giannetti <romano.giannetti-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
Date		: 2008-11-03 12:10 (35 days old)
Handled-By	: Jesse Barnes <jbarnes-Y1mF5jBUw70BENJcbMCuUQ@public.gmane.org>


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=11906
Subject		: 2.6.28-rc2 seems to fail at powering down the monitor when it should
Submitter	: Gene Heskett <gene.heskett-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
Date		: 2008-10-30 6:39 (39 days old)
References	: http://marc.info/?l=linux-kernel&m=122534879721424&w=4


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=11858
Subject		: Timeout regression introduced by 242f9dcb8ba6f68fcd217a119a7648a4f69290e9
Submitter	: Tejun Heo <tj-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
Date		: 2008-10-26 9:46 (43 days old)
First-Bad-Commit: http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=242f9dcb8ba6f68fcd217a119a7648a4f69290e9
References	: http://marc.info/?l=linux-kernel&m=122501447326698&w=4


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=11849
Subject		: default IRQ affinity change in v2.6.27 (breaking several SMP PPC based systems)
Submitter	: Kumar Gala <galak-XVmvHMARGAS8U2dJNN8I7kB+6BGkLq7r@public.gmane.org>
Date		: 2008-10-24 12:45 (45 days old)
References	: http://marc.info/?l=linux-kernel&m=122485245924125&w=4


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

Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=12177
Subject		: [memcg BUG ?] failed to boot on IA64 with CONFIG_DISCONTIGMEM=y
Submitter	: Li Zefan <lizf-BthXqXjhjHXQFUHtdCDX3A@public.gmane.org>
Date		: 2008-12-05 3:09 (3 days old)
References	: http://marc.info/?l=linux-kernel&m=122844668532752&w=4
Handled-By	: KAMEZAWA Hiroyuki <kamezawa.hiroyu-+CUm20s59erQFUHtdCDX3A@public.gmane.org>
Patch		: http://marc.info/?l=linux-kernel&m=122844757701505&w=4


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=12047
Subject		: ACPI toshiba: only register rfkill if bt is enabled
Submitter	: Andrey Borzenkov <arvidjaar-JGs/UdohzUI@public.gmane.org>
Date		: 2008-10-28 19:10 (41 days old)
References	: http://marc.info/?l=linux-kernel&m=122522113619025&w=2
Handled-By	: Frederik Deweerdt <frederik.deweerdt-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
Patch		: http://marc.info/?l=linux-kernel&m=122526843117478&w=2


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=11898
Subject		: mke2fs hang on AIC79 device.
Submitter	: alexs <alex.shi-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
Date		: 2008-10-30 01:17 (39 days old)
First-Bad-Commit: http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=f0c0a376d0fcd4c5579ecf5e95f88387cba85211
Handled-By	: James Bottomley <James.Bottomley-d9PhHud1JfjCXq6kfMZ53/egYHeGw8Jk@public.gmane.org>
		  Mike Christie <michaelc-hcNo3dDEHLuVc3sceRu5cw@public.gmane.org>
Patch		: http://bugzilla.kernel.org/show_bug.cgi?id=11898#c28
		  http://bugzilla.kernel.org/show_bug.cgi?id=11898#c36


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 2.6.27,
unresolved as well as resolved, at:

http://bugzilla.kernel.org/show_bug.cgi?id=11808

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

Thanks,
Rafael

[Bug #11849] default IRQ affinity change in v2.6.27 (breaking several SMP PPC based systems)

[Rafael J. Wysocki]

This message has been generated automatically as a part of a report
of recent regressions.

The following bug entry is on the current list of known regressions
from 2.6.27.  Please verify if it still should be listed and let me know
(either way).


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=11849
Subject		: default IRQ affinity change in v2.6.27 (breaking several SMP PPC based systems)
Submitter	: Kumar Gala <galak-XVmvHMARGAS8U2dJNN8I7kB+6BGkLq7r@public.gmane.org>
Date		: 2008-10-24 12:45 (45 days old)
References	: http://marc.info/?l=linux-kernel&m=122485245924125&w=4

[Bug #11858] Timeout regression introduced by 242f9dcb8ba6f68fcd217a119a7648a4f69290e9

[Rafael J. Wysocki]

This message has been generated automatically as a part of a report
of recent regressions.

The following bug entry is on the current list of known regressions
from 2.6.27.  Please verify if it still should be listed and let me know
(either way).


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=11858
Subject		: Timeout regression introduced by 242f9dcb8ba6f68fcd217a119a7648a4f69290e9
Submitter	: Tejun Heo <tj-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
Date		: 2008-10-26 9:46 (43 days old)
First-Bad-Commit: http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=242f9dcb8ba6f68fcd217a119a7648a4f69290e9
References	: http://marc.info/?l=linux-kernel&m=122501447326698&w=4

[Bug #11906] 2.6.28-rc2 seems to fail at powering down the monitor when it should

[Rafael J. Wysocki]

This message has been generated automatically as a part of a report
of recent regressions.

The following bug entry is on the current list of known regressions
from 2.6.27.  Please verify if it still should be listed and let me know
(either way).


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=11906
Subject		: 2.6.28-rc2 seems to fail at powering down the monitor when it should
Submitter	: Gene Heskett <gene.heskett-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
Date		: 2008-10-30 6:39 (39 days old)
References	: http://marc.info/?l=linux-kernel&m=122534879721424&w=4

[Bug #11898] mke2fs hang on AIC79 device.

[Rafael J. Wysocki]

This message has been generated automatically as a part of a report
of recent regressions.

The following bug entry is on the current list of known regressions
from 2.6.27.  Please verify if it still should be listed and let me know
(either way).


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=11898
Subject		: mke2fs hang on AIC79 device.
Submitter	: alexs <alex.shi-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
Date		: 2008-10-30 01:17 (39 days old)
First-Bad-Commit: http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=f0c0a376d0fcd4c5579ecf5e95f88387cba85211
Handled-By	: James Bottomley <James.Bottomley-d9PhHud1JfjCXq6kfMZ53/egYHeGw8Jk@public.gmane.org>
		  Mike Christie <michaelc-hcNo3dDEHLuVc3sceRu5cw@public.gmane.org>
Patch		: http://bugzilla.kernel.org/show_bug.cgi?id=11898#c28
		  http://bugzilla.kernel.org/show_bug.cgi?id=11898#c36

[Bug #11958] [2.6.27.x => 2.6.28-rc3] Xorg crash with xf86MapVidMem error

[Rafael J. Wysocki]

This message has been generated automatically as a part of a report
of recent regressions.

The following bug entry is on the current list of known regressions
from 2.6.27.  Please verify if it still should be listed and let me know
(either way).


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=11958
Subject		: [2.6.27.x => 2.6.28-rc3] Xorg crash with xf86MapVidMem error
Submitter	: Tomasz Chmielewski <tch-Nem3ZqsbT/g@public.gmane.org>
Date		: 2008-11-05 05:37 (33 days old)

[Bug #12028] i915 DRM is broken in 2.6.28-rc4

[Rafael J. Wysocki]

This message has been generated automatically as a part of a report
of recent regressions.

The following bug entry is on the current list of known regressions
from 2.6.27.  Please verify if it still should be listed and let me know
(either way).


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=12028
Subject		: i915 DRM is broken in 2.6.28-rc4
Submitter	: Adam Tkac <vonsch-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
Date		: 2008-11-14 01:50 (24 days old)

[Bug #12034] snd-hda-intel on Realtek ALC268 chip shows only Master volume (for playback)

[Rafael J. Wysocki]

This message has been generated automatically as a part of a report
of recent regressions.

The following bug entry is on the current list of known regressions
from 2.6.27.  Please verify if it still should be listed and let me know
(either way).


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=12034
Subject		: snd-hda-intel on Realtek ALC268 chip shows only Master volume (for playback)
Submitter	: Sergey <azure-IGUVrPOATOfsG83rWm+8vg@public.gmane.org>
Date		: 2008-11-15 04:20 (23 days old)
Handled-By	: Takashi Iwai <tiwai-l3A5Bk7waGM@public.gmane.org>

[Bug #11947] 2.6.28-rc VC switching with Intel graphics broken

[Rafael J. Wysocki]

This message has been generated automatically as a part of a report
of recent regressions.

The following bug entry is on the current list of known regressions
from 2.6.27.  Please verify if it still should be listed and let me know
(either way).


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=11947
Subject		: 2.6.28-rc VC switching with Intel graphics broken
Submitter	: Romano Giannetti <romano.giannetti-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
Date		: 2008-11-03 12:10 (35 days old)
Handled-By	: Jesse Barnes <jbarnes-Y1mF5jBUw70BENJcbMCuUQ@public.gmane.org>

[Bug #12100] resume (S2R) broken by Intel microcode module, on A110L

[Rafael J. Wysocki]

This message has been generated automatically as a part of a report
of recent regressions.

The following bug entry is on the current list of known regressions
from 2.6.27.  Please verify if it still should be listed and let me know
(either way).


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=12100
Subject		: resume (S2R) broken by Intel microcode module, on A110L
Submitter	: Andreas Mohr <andi-5+Cda9B46AM@public.gmane.org>
Date		: 2008-11-25 08:48 (13 days old)

[Bug #12061] snd_hda_intel: power_save: sound cracks on powerdown

[Rafael J. Wysocki]

This message has been generated automatically as a part of a report
of recent regressions.

The following bug entry is on the current list of known regressions
from 2.6.27.  Please verify if it still should be listed and let me know
(either way).


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=12061
Subject		: snd_hda_intel: power_save: sound cracks on powerdown
Submitter	: Jens Weibler <bugzilla-kernel-6hJTtV8wudIr9FUcG+3rRQ@public.gmane.org>
Date		: 2008-11-18 12:07 (20 days old)
Handled-By	: Takashi Iwai <tiwai-l3A5Bk7waGM@public.gmane.org>

[Bug #12152] Huge wakeups number from i1915

[Rafael J. Wysocki]

This message has been generated automatically as a part of a report
of recent regressions.

The following bug entry is on the current list of known regressions
from 2.6.27.  Please verify if it still should be listed and let me know
(either way).


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=12152
Subject		: Huge wakeups number from i1915
Submitter	: Yves-Alexis Perez <corsac-8fiUuRrzOP0dnm+yROfE0A@public.gmane.org>
Date		: 2008-12-02 16:48 (6 days old)
References	: http://marc.info/?l=linux-acpi&m=122823656702994&w=4

[Bug #12047] ACPI toshiba: only register rfkill if bt is enabled

[Rafael J. Wysocki]

This message has been generated automatically as a part of a report
of recent regressions.

The following bug entry is on the current list of known regressions
from 2.6.27.  Please verify if it still should be listed and let me know
(either way).


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=12047
Subject		: ACPI toshiba: only register rfkill if bt is enabled
Submitter	: Andrey Borzenkov <arvidjaar-JGs/UdohzUI@public.gmane.org>
Date		: 2008-10-28 19:10 (41 days old)
References	: http://marc.info/?l=linux-kernel&m=122522113619025&w=2
Handled-By	: Frederik Deweerdt <frederik.deweerdt-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
Patch		: http://marc.info/?l=linux-kernel&m=122526843117478&w=2

[Bug #12155] Regression in 2.6.28-rc and 2.6.27-stable - hibernate related

[Rafael J. Wysocki]

This message has been generated automatically as a part of a report
of recent regressions.

The following bug entry is on the current list of known regressions
from 2.6.27.  Please verify if it still should be listed and let me know
(either way).


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=12155
Subject		: Regression in 2.6.28-rc and 2.6.27-stable - hibernate related
Submitter	: Fabio Comolli <fabio.comolli-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
Date		: 2008-11-23 16:17 (15 days old)
References	: http://marc.info/?l=linux-kernel&m=122745709926361&w=4

[Bug #12156] v2.6.28-rc2: x86_32 relocation regression?

[Rafael J. Wysocki]

This message has been generated automatically as a part of a report
of recent regressions.

The following bug entry is on the current list of known regressions
from 2.6.27.  Please verify if it still should be listed and let me know
(either way).


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=12156
Subject		: v2.6.28-rc2: x86_32 relocation regression?
Submitter	: Vegard Nossum <vegard.nossum-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
Date		: 2008-11-24 21:19 (14 days old)
References	: http://marc.info/?l=linux-kernel&m=122756158220966&w=4

[Bug #12160] networking oops after resume from s2ram (2.6.28-rc6)

[Rafael J. Wysocki]

This message has been generated automatically as a part of a report
of recent regressions.

The following bug entry is on the current list of known regressions
from 2.6.27.  Please verify if it still should be listed and let me know
(either way).


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=12160
Subject		: networking oops after resume from s2ram (2.6.28-rc6)
Submitter	: Marcin Slusarz <marcin.slusarz-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
Date		: 2008-11-28 21:15 (10 days old)
References	: http://marc.info/?l=linux-kernel&m=122790701615723&w=4

[Bug #12159] 2.6.28-rc6-git1 -- No sound produced from Intel HDA ALSA driver

[Rafael J. Wysocki]

This message has been generated automatically as a part of a report
of recent regressions.

The following bug entry is on the current list of known regressions
from 2.6.27.  Please verify if it still should be listed and let me know
(either way).


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=12159
Subject		: 2.6.28-rc6-git1 -- No sound produced from Intel HDA ALSA driver
Submitter	: Miles Lane <miles.lane-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
Date		: 2008-11-27 20:33 (11 days old)
References	: http://marc.info/?l=linux-kernel&m=122781805620212&w=4
Handled-By	: Takashi Iwai <tiwai-l3A5Bk7waGM@public.gmane.org>

[Bug #12158] commit b1ee26b freezes system on switching from X to text console

[Rafael J. Wysocki]

This message has been generated automatically as a part of a report
of recent regressions.

The following bug entry is on the current list of known regressions
from 2.6.27.  Please verify if it still should be listed and let me know
(either way).


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=12158
Subject		: commit b1ee26b freezes system on switching from X to text console
Submitter	: Gaudenz Steinlin <gaudenz-8fiUuRrzOP0dnm+yROfE0A@public.gmane.org>
Date		: 2008-11-25 19:44 (13 days old)
First-Bad-Commit: http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=b1ee26bab14886350ba12a5c10cbc0696ac679bf
References	: http://marc.info/?l=linux-kernel&m=122764344231140&w=4
Handled-By	: Benjamin Herrenschmidt <benh-XVmvHMARGAS8U2dJNN8I7kB+6BGkLq7r@public.gmane.org>

[Bug #12178] Xorg crash at first start

[Rafael J. Wysocki]

This message has been generated automatically as a part of a report
of recent regressions.

The following bug entry is on the current list of known regressions
from 2.6.27.  Please verify if it still should be listed and let me know
(either way).


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=12178
Subject		: Xorg crash at first start
Submitter	: Cédric Godin <cedric-x1Cn44Nr1HaZIoH1IeqzKA@public.gmane.org>
Date		: 2008-12-04 14:26 (4 days old)
First-Bad-Commit: http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=52440211dcdc52c0b757f8b34d122e11b12cdd50
References	: http://marc.info/?l=linux-kernel&m=122840082828098&w=4

[Bug #12161] [i915 drm] irq 16: nobody cared with latest git kernels

[Rafael J. Wysocki]

This message has been generated automatically as a part of a report
of recent regressions.

The following bug entry is on the current list of known regressions
from 2.6.27.  Please verify if it still should be listed and let me know
(either way).


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=12161
Subject		: [i915 drm] irq 16: nobody cared with latest git kernels
Submitter	: fredi ml <mailinglists.fredi-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
Date		: 2008-12-02 13:26 (6 days old)
References	: http://marc.info/?l=linux-kernel&m=122822444615724&w=4

[Bug #12177] [memcg BUG ?] failed to boot on IA64 with CONFIG_DISCONTIGMEM=y

[Rafael J. Wysocki]

This message has been generated automatically as a part of a report
of recent regressions.

The following bug entry is on the current list of known regressions
from 2.6.27.  Please verify if it still should be listed and let me know
(either way).


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=12177
Subject		: [memcg BUG ?] failed to boot on IA64 with CONFIG_DISCONTIGMEM=y
Submitter	: Li Zefan <lizf-BthXqXjhjHXQFUHtdCDX3A@public.gmane.org>
Date		: 2008-12-05 3:09 (3 days old)
References	: http://marc.info/?l=linux-kernel&m=122844668532752&w=4
Handled-By	: KAMEZAWA Hiroyuki <kamezawa.hiroyu-+CUm20s59erQFUHtdCDX3A@public.gmane.org>
Patch		: http://marc.info/?l=linux-kernel&m=122844757701505&w=4

Re: [Bug #12152] Huge wakeups number from i1915

[Arjan van de Ven]

On Sun,  7 Dec 2008 21:32:54 +0100 (CET)
"Rafael J. Wysocki" <rjw-KKrjLPT3xs0@public.gmane.org> wrote:

> This message has been generated automatically as a part of a report
> of recent regressions.
> 
> The following bug entry is on the current list of known regressions
> from 2.6.27.  Please verify if it still should be listed and let me
> know (either way).
> 
> 
> Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=12152
> Subject		: Huge wakeups number from i1915
> Submitter	: Yves-Alexis Perez <corsac-8fiUuRrzOP0dnm+yROfE0A@public.gmane.org>
> Date		: 2008-12-02 16:48 (6 days old)
> References	:
> http://marc.info/?l=linux-acpi&m=122823656702994&w=4
> 

at least in some of the cases where this has been seen the cause is the
following:
The i915 DRM driver used to do polling for completion, busy waiting. It
moved to be interrupt driven, which is usually better for power, but it
will show up as more wakeups in powertop....


-- 
Arjan van de Ven 	Intel Open Source Technology Centre
For development, discussion and tips for power savings, 
visit http://www.lesswatts.org

Re: [Bug #12152] Huge wakeups number from i1915

[Rafael J. Wysocki]

On Sunday, 7 of December 2008, Arjan van de Ven wrote:
> On Sun,  7 Dec 2008 21:32:54 +0100 (CET)
> "Rafael J. Wysocki" <rjw-KKrjLPT3xs0@public.gmane.org> wrote:
> 
> > This message has been generated automatically as a part of a report
> > of recent regressions.
> > 
> > The following bug entry is on the current list of known regressions
> > from 2.6.27.  Please verify if it still should be listed and let me
> > know (either way).
> > 
> > 
> > Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=12152
> > Subject		: Huge wakeups number from i1915
> > Submitter	: Yves-Alexis Perez <corsac-8fiUuRrzOP0dnm+yROfE0A@public.gmane.org>
> > Date		: 2008-12-02 16:48 (6 days old)
> > References	:
> > http://marc.info/?l=linux-acpi&m=122823656702994&w=4
> > 
> 
> at least in some of the cases where this has been seen the cause is the
> following:
> The i915 DRM driver used to do polling for completion, busy waiting. It
> moved to be interrupt driven, which is usually better for power, but it
> will show up as more wakeups in powertop....

IOW, this is not a regression?

Rafael

Re: [Bug #12152] Huge wakeups number from i1915

[Arjan van de Ven]

On Sun, 7 Dec 2008 23:52:06 +0100
"Rafael J. Wysocki" <rjw-KKrjLPT3xs0@public.gmane.org> wrote:

> On Sunday, 7 of December 2008, Arjan van de Ven wrote:
> > On Sun,  7 Dec 2008 21:32:54 +0100 (CET)
> > "Rafael J. Wysocki" <rjw-KKrjLPT3xs0@public.gmane.org> wrote:
> > 
> > > This message has been generated automatically as a part of a
> > > report of recent regressions.
> > > 
> > > The following bug entry is on the current list of known
> > > regressions from 2.6.27.  Please verify if it still should be
> > > listed and let me know (either way).
> > > 
> > > 
> > > Bug-Entry	:
> > > http://bugzilla.kernel.org/show_bug.cgi?id=12152
> > > Subject		: Huge wakeups number from i1915
> > > Submitter	: Yves-Alexis Perez <corsac-8fiUuRrzOP0dnm+yROfE0A@public.gmane.org>
> > > Date		: 2008-12-02 16:48 (6 days old)
> > > References	:
> > > http://marc.info/?l=linux-acpi&m=122823656702994&w=4
> > > 
> > 
> > at least in some of the cases where this has been seen the cause is
> > the following:
> > The i915 DRM driver used to do polling for completion, busy
> > waiting. It moved to be interrupt driven, which is usually better
> > for power, but it will show up as more wakeups in powertop....
> 
> IOW, this is not a regression?

I don't know about this specifc case (not enough information) but for
the case I described it's not a regression. Going to interrupt driven
from busy waiting is an improvement not a regression :)

-- 
Arjan van de Ven 	Intel Open Source Technology Centre
For development, discussion and tips for power savings, 
visit http://www.lesswatts.org

Re: [Bug #12152] Huge wakeups number from i1915

[Rafael J. Wysocki]

On Monday, 8 of December 2008, Arjan van de Ven wrote:
> On Sun, 7 Dec 2008 23:52:06 +0100
> "Rafael J. Wysocki" <rjw-KKrjLPT3xs0@public.gmane.org> wrote:
> 
> > On Sunday, 7 of December 2008, Arjan van de Ven wrote:
> > > On Sun,  7 Dec 2008 21:32:54 +0100 (CET)
> > > "Rafael J. Wysocki" <rjw-KKrjLPT3xs0@public.gmane.org> wrote:
> > > 
> > > > This message has been generated automatically as a part of a
> > > > report of recent regressions.
> > > > 
> > > > The following bug entry is on the current list of known
> > > > regressions from 2.6.27.  Please verify if it still should be
> > > > listed and let me know (either way).
> > > > 
> > > > 
> > > > Bug-Entry	:
> > > > http://bugzilla.kernel.org/show_bug.cgi?id=12152
> > > > Subject		: Huge wakeups number from i1915
> > > > Submitter	: Yves-Alexis Perez <corsac-8fiUuRrzOP0dnm+yROfE0A@public.gmane.org>
> > > > Date		: 2008-12-02 16:48 (6 days old)
> > > > References	:
> > > > http://marc.info/?l=linux-acpi&m=122823656702994&w=4
> > > > 
> > > 
> > > at least in some of the cases where this has been seen the cause is
> > > the following:
> > > The i915 DRM driver used to do polling for completion, busy
> > > waiting. It moved to be interrupt driven, which is usually better
> > > for power, but it will show up as more wakeups in powertop....
> > 
> > IOW, this is not a regression?
> 
> I don't know about this specifc case (not enough information) but for
> the case I described it's not a regression. Going to interrupt driven
> from busy waiting is an improvement not a regression :)

Sure it is. :-)

Let's wait for the reporter to respond.

Re: [Bug #12152] Huge wakeups number from i1915

[Yves-Alexis Perez]

[-- Attachment #1: Type: text/plain, Size: 987 bytes --]

On dim, 2008-12-07 at 15:12 -0800, Arjan van de Ven wrote:
> 
> > > at least in some of the cases where this has been seen the cause
> is
> > > the following:
> > > The i915 DRM driver used to do polling for completion, busy
> > > waiting. It moved to be interrupt driven, which is usually better
> > > for power, but it will show up as more wakeups in powertop....
> > 
> > IOW, this is not a regression?
> 
> I don't know about this specifc case (not enough information) but for
> the case I described it's not a regression. Going to interrupt driven
> from busy waiting is an improvement not a regression :)

Well, several thousand or more interrupts really seems like a
regression :). But it seems that's the same thing as the “IRQ
spinning” (there was a thread on dri-devel about that).

It seems fixed with a patch from Matthew Garrett applied to
drm-intel/for-airlied but I don't think this has been applied to Linus
master.

Cheers,
-- 
Yves-Alexis

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Re: [Bug #12152] Huge wakeups number from i1915

[Yves-Alexis Perez]

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On lun, 2008-12-08 at 07:24 +0100, Yves-Alexis Perez wrote:
> On dim, 2008-12-07 at 15:12 -0800, Arjan van de Ven wrote:
> > 
> > > > at least in some of the cases where this has been seen the cause
> > is
> > > > the following:
> > > > The i915 DRM driver used to do polling for completion, busy
> > > > waiting. It moved to be interrupt driven, which is usually better
> > > > for power, but it will show up as more wakeups in powertop....
> > > 
> > > IOW, this is not a regression?
> > 
> > I don't know about this specifc case (not enough information) but for
> > the case I described it's not a regression. Going to interrupt driven
> > from busy waiting is an improvement not a regression :)
> 
> Well, several thousand or more interrupts really seems like a
> regression :). But it seems that's the same thing as the “IRQ
> spinning” (there was a thread on dri-devel about that).
> 
> It seems fixed with a patch from Matthew Garrett applied to
> drm-intel/for-airlied but I don't think this has been applied to Linus
> master.

And it seems the same thing as
https://bugs.freedesktop.org/show_bug.cgi?id=18609

Cheers,
-- 
Yves-Alexis

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Re: [Bug #12177] [memcg BUG ?] failed to boot on IA64 with CONFIG_DISCONTIGMEM=y

[Balbir Singh]

* Rafael J. Wysocki <rjw-KKrjLPT3xs0@public.gmane.org> [2008-12-07 21:32:57]:

> This message has been generated automatically as a part of a report
> of recent regressions.
> 
> The following bug entry is on the current list of known regressions
> from 2.6.27.  Please verify if it still should be listed and let me know
> (either way).
> 
> 
> Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=12177
> Subject		: [memcg BUG ?] failed to boot on IA64 with CONFIG_DISCONTIGMEM=y
> Submitter	: Li Zefan <lizf-BthXqXjhjHXQFUHtdCDX3A@public.gmane.org>
> Date		: 2008-12-05 3:09 (3 days old)
> References	: http://marc.info/?l=linux-kernel&m=122844668532752&w=4
> Handled-By	: KAMEZAWA Hiroyuki <kamezawa.hiroyu-+CUm20s59erQFUHtdCDX3A@public.gmane.org>
> Patch		: http://marc.info/?l=linux-kernel&m=122844757701505&w=4

Kamezawa has a fix that Li has tested. We need to polish the changelog
and resend the patch.

-- 
	Balbir

Re: [Bug #12152] Huge wakeups number from i1915

[Rafael J. Wysocki]

On Monday, 8 of December 2008, Yves-Alexis Perez wrote:
> On dim, 2008-12-07 at 15:12 -0800, Arjan van de Ven wrote:
> > 
> > > > at least in some of the cases where this has been seen the cause
> > is
> > > > the following:
> > > > The i915 DRM driver used to do polling for completion, busy
> > > > waiting. It moved to be interrupt driven, which is usually better
> > > > for power, but it will show up as more wakeups in powertop....
> > > 
> > > IOW, this is not a regression?
> > 
> > I don't know about this specifc case (not enough information) but for
> > the case I described it's not a regression. Going to interrupt driven
> > from busy waiting is an improvement not a regression :)
> 
> Well, several thousand or more interrupts really seems like a
> regression :). But it seems that's the same thing as the “IRQ
> spinning” (there was a thread on dri-devel about that).
> 
> It seems fixed with a patch from Matthew Garrett applied to
> drm-intel/for-airlied but I don't think this has been applied to Linus
> master.

Any pointers to the patch, please?

Rafael

Re: [Bug #12177] [memcg BUG ?] failed to boot on IA64 with CONFIG_DISCONTIGMEM=y

[Rafael J. Wysocki]

On Monday, 8 of December 2008, Balbir Singh wrote:
> * Rafael J. Wysocki <rjw-KKrjLPT3xs0@public.gmane.org> [2008-12-07 21:32:57]:
> 
> > This message has been generated automatically as a part of a report
> > of recent regressions.
> > 
> > The following bug entry is on the current list of known regressions
> > from 2.6.27.  Please verify if it still should be listed and let me know
> > (either way).
> > 
> > 
> > Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=12177
> > Subject		: [memcg BUG ?] failed to boot on IA64 with CONFIG_DISCONTIGMEM=y
> > Submitter	: Li Zefan <lizf-BthXqXjhjHXQFUHtdCDX3A@public.gmane.org>
> > Date		: 2008-12-05 3:09 (3 days old)
> > References	: http://marc.info/?l=linux-kernel&m=122844668532752&w=4
> > Handled-By	: KAMEZAWA Hiroyuki <kamezawa.hiroyu-+CUm20s59erQFUHtdCDX3A@public.gmane.org>
> > Patch		: http://marc.info/?l=linux-kernel&m=122844757701505&w=4
> 
> Kamezawa has a fix that Li has tested. We need to polish the changelog
> and resend the patch.

Thanks for the update.

Rafael

Re: [Bug #12152] Huge wakeups number from i1915

[Yves-Alexis Perez]

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On lun, 2008-12-08 at 08:28 +0100, Rafael J. Wysocki wrote:
> Any pointers to the patch, please?

The patch I had success with was the one enabling MSI on 965. You can
find it there:

http://marc.info/?l=dri-devel&m=122843874524733&w=2

Not sure if it's “the one” really usable, but at least it fixes the
problem for now.

Cheers,
-- 
Yves-Alexis

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Re: [Bug #12152] Huge wakeups number from i1915

[Matthew Garrett]

On Mon, Dec 08, 2008 at 08:28:07AM +0100, Rafael J. Wysocki wrote:
> On Monday, 8 of December 2008, Yves-Alexis Perez wrote:
> > On dim, 2008-12-07 at 15:12 -0800, Arjan van de Ven wrote:
> > > 
> > > > > at least in some of the cases where this has been seen the cause
> > > is
> > > > > the following:
> > > > > The i915 DRM driver used to do polling for completion, busy
> > > > > waiting. It moved to be interrupt driven, which is usually better
> > > > > for power, but it will show up as more wakeups in powertop....
> > > > 
> > > > IOW, this is not a regression?
> > > 
> > > I don't know about this specifc case (not enough information) but for
> > > the case I described it's not a regression. Going to interrupt driven
> > > from busy waiting is an improvement not a regression :)
> > 
> > Well, several thousand or more interrupts really seems like a
> > regression :). But it seems that's the same thing as the “IRQ
> > spinning” (there was a thread on dri-devel about that).
> > 
> > It seems fixed with a patch from Matthew Garrett applied to
> > drm-intel/for-airlied but I don't think this has been applied to Linus
> > master.
> 
> Any pointers to the patch, please?

Doesn't ring any bells for me...

-- 
Matthew Garrett | mjg59-1xO5oi07KQx4cg9Nei1l7Q@public.gmane.org

Re: [Bug #12152] Huge wakeups number from i1915

[Yves-Alexis Perez]

> Doesn't ring any bells for me...

This was the “irq spinning” thread on dri-devel.
-- 
Yves-Alexis

Re: [Bug #12152] Huge wakeups number from i1915

[Matthew Garrett]

On Mon, Dec 08, 2008 at 05:19:49PM +0100, Yves-Alexis Perez wrote:
> > Doesn't ring any bells for me...
> 
> This was the “irq spinning” thread on dri-devel.

Looks like the patch was from Keith, not me?

Unrelatedly, I didn't get the Cc:ed copy of this mail. Did you get a 
bounce?
-- 
Matthew Garrett | mjg59-1xO5oi07KQx4cg9Nei1l7Q@public.gmane.org

[Bug #12155] Regression in 2.6.28-rc and 2.6.27-stable - hibernate related

[Rafael J. Wysocki]

This message has been generated automatically as a part of a report
of recent regressions.

The following bug entry is on the current list of known regressions
from 2.6.27.  Please verify if it still should be listed and let me know
(either way).


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=12155
Subject		: Regression in 2.6.28-rc and 2.6.27-stable - hibernate related
Submitter	: Fabio Comolli <fabio.comolli-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
Date		: 2008-11-23 16:17 (21 days old)
References	: http://marc.info/?l=linux-kernel&m=122745709926361&w=4

Re: [Bug #12155] Regression in 2.6.28-rc and 2.6.27-stable - hibernate related

[Fabio Comolli]

Hi.

On Sat, Dec 13, 2008 at 5:33 PM, Rafael J. Wysocki <rjw-KKrjLPT3xs0@public.gmane.org> wrote:
> This message has been generated automatically as a part of a report
> of recent regressions.
>
> The following bug entry is on the current list of known regressions
> from 2.6.27.  Please verify if it still should be listed and let me know
> (either way).
>
>
> Bug-Entry       : http://bugzilla.kernel.org/show_bug.cgi?id=12155
> Subject         : Regression in 2.6.28-rc and 2.6.27-stable - hibernate related
> Submitter       : Fabio Comolli <fabio.comolli-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
> Date            : 2008-11-23 16:17 (21 days old)
> References      : http://marc.info/?l=linux-kernel&m=122745709926361&w=4

Still present. It has been bisected to:

---------------------------------------------------------------------------------------------------------------
commit 5e55aa8db085dad1aabb4574c73c23c7ae571e7b
Author: Dave Kleikamp <shaggy-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org>
Date:   Sun Oct 26 18:20:14 2008 -0400

    sched_clock: prevent scd->clock from moving backwards

    commit 5b7dba4ff834259a5623e03a565748704a8fe449 upstream

    sched_clock: prevent scd->clock from moving backwards

    When sched_clock_cpu() couples the clocks between two cpus, it may
    increment scd->clock beyond the GTOD tick window that __update_sched_clock()
    uses to clamp the clock.  A later call to __update_sched_clock() may move
    the clock back to scd->tick_gtod + TICK_NSEC, violating the clock's
    monotonic property.

    This patch ensures that scd->clock will not be set backward.

    Signed-off-by: Dave Kleikamp <shaggy-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org>
    Acked-by: Peter Zijlstra <a.p.zijlstra-/NLkJaSkS4VmR6Xm/wNWPw@public.gmane.org>
    Signed-off-by: Ingo Molnar <mingo-X9Un+BFzKDI@public.gmane.org>
    Cc: Chuck Ebbert <cebbert-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
    Signed-off-by: Greg Kroah-Hartman <gregkh-l3A5Bk7waGM@public.gmane.org>
------------------------------------------------------------------------------------------------------------

Both 2.6.27.8 and 2.6.28-rc8 with that commit reverted work fine
(well, at least they failed to show the bug so far).

Re: [Bug #12155] Regression in 2.6.28-rc and 2.6.27-stable - hibernate related

[Rafael J. Wysocki]

On Saturday, 13 of December 2008, Fabio Comolli wrote:
> Hi.

Hi,

> On Sat, Dec 13, 2008 at 5:33 PM, Rafael J. Wysocki <rjw-KKrjLPT3xs0@public.gmane.org> wrote:
> > This message has been generated automatically as a part of a report
> > of recent regressions.
> >
> > The following bug entry is on the current list of known regressions
> > from 2.6.27.  Please verify if it still should be listed and let me know
> > (either way).
> >
> >
> > Bug-Entry       : http://bugzilla.kernel.org/show_bug.cgi?id=12155
> > Subject         : Regression in 2.6.28-rc and 2.6.27-stable - hibernate related
> > Submitter       : Fabio Comolli <fabio.comolli-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
> > Date            : 2008-11-23 16:17 (21 days old)
> > References      : http://marc.info/?l=linux-kernel&m=122745709926361&w=4
> 
> Still present. It has been bisected to:
> 
> ---------------------------------------------------------------------------------------------------------------
> commit 5e55aa8db085dad1aabb4574c73c23c7ae571e7b
> Author: Dave Kleikamp <shaggy-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org>
> Date:   Sun Oct 26 18:20:14 2008 -0400
> 
>     sched_clock: prevent scd->clock from moving backwards
> 
>     commit 5b7dba4ff834259a5623e03a565748704a8fe449 upstream
> 
>     sched_clock: prevent scd->clock from moving backwards
> 
>     When sched_clock_cpu() couples the clocks between two cpus, it may
>     increment scd->clock beyond the GTOD tick window that __update_sched_clock()
>     uses to clamp the clock.  A later call to __update_sched_clock() may move
>     the clock back to scd->tick_gtod + TICK_NSEC, violating the clock's
>     monotonic property.
> 
>     This patch ensures that scd->clock will not be set backward.
> 
>     Signed-off-by: Dave Kleikamp <shaggy-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org>
>     Acked-by: Peter Zijlstra <a.p.zijlstra-/NLkJaSkS4VmR6Xm/wNWPw@public.gmane.org>
>     Signed-off-by: Ingo Molnar <mingo-X9Un+BFzKDI@public.gmane.org>
>     Cc: Chuck Ebbert <cebbert-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
>     Signed-off-by: Greg Kroah-Hartman <gregkh-l3A5Bk7waGM@public.gmane.org>
> ------------------------------------------------------------------------------------------------------------
> 
> Both 2.6.27.8 and 2.6.28-rc8 with that commit reverted work fine
> (well, at least they failed to show the bug so far).

Thanks for the update, I have put this information into the Bugzilla entry.

Would everyone involved agree with reverting the above commit for now and
revisiting the issue in the 2.6.29 time frame?

Rafael

Re: [Bug #12155] Regression in 2.6.28-rc and 2.6.27-stable - hibernate related

[Dave Kleikamp]

On Sat, 2008-12-13 at 19:56 +0100, Rafael J. Wysocki wrote:

> Thanks for the update, I have put this information into the Bugzilla entry.
> 
> Would everyone involved agree with reverting the above commit for now and
> revisiting the issue in the 2.6.29 time frame?

I agree.  I can't explain what's wrong, but it seems obvious that my
patch either causes or uncovers a more serious problem than it fixed.

Shaggy
-- 
David Kleikamp
IBM Linux Technology Center

Re: [Bug #12155] Regression in 2.6.28-rc and 2.6.27-stable - hibernate related

[Ingo Molnar]

* Rafael J. Wysocki <rjw-KKrjLPT3xs0@public.gmane.org> wrote:

> On Saturday, 13 of December 2008, Fabio Comolli wrote:
> > Hi.
> 
> Hi,
> 
> > On Sat, Dec 13, 2008 at 5:33 PM, Rafael J. Wysocki <rjw-KKrjLPT3xs0@public.gmane.org> wrote:
> > > This message has been generated automatically as a part of a report
> > > of recent regressions.
> > >
> > > The following bug entry is on the current list of known regressions
> > > from 2.6.27.  Please verify if it still should be listed and let me know
> > > (either way).
> > >
> > >
> > > Bug-Entry       : http://bugzilla.kernel.org/show_bug.cgi?id=12155
> > > Subject         : Regression in 2.6.28-rc and 2.6.27-stable - hibernate related
> > > Submitter       : Fabio Comolli <fabio.comolli-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
> > > Date            : 2008-11-23 16:17 (21 days old)
> > > References      : http://marc.info/?l=linux-kernel&m=122745709926361&w=4
> > 
> > Still present. It has been bisected to:
> > 
> > ---------------------------------------------------------------------------------------------------------------
> > commit 5e55aa8db085dad1aabb4574c73c23c7ae571e7b
> > Author: Dave Kleikamp <shaggy-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org>
> > Date:   Sun Oct 26 18:20:14 2008 -0400
> > 
> >     sched_clock: prevent scd->clock from moving backwards
> > 
> >     commit 5b7dba4ff834259a5623e03a565748704a8fe449 upstream
> > 
> >     sched_clock: prevent scd->clock from moving backwards
> > 
> >     When sched_clock_cpu() couples the clocks between two cpus, it may
> >     increment scd->clock beyond the GTOD tick window that __update_sched_clock()
> >     uses to clamp the clock.  A later call to __update_sched_clock() may move
> >     the clock back to scd->tick_gtod + TICK_NSEC, violating the clock's
> >     monotonic property.
> > 
> >     This patch ensures that scd->clock will not be set backward.
> > 
> >     Signed-off-by: Dave Kleikamp <shaggy-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org>
> >     Acked-by: Peter Zijlstra <a.p.zijlstra-/NLkJaSkS4VmR6Xm/wNWPw@public.gmane.org>
> >     Signed-off-by: Ingo Molnar <mingo-X9Un+BFzKDI@public.gmane.org>
> >     Cc: Chuck Ebbert <cebbert-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
> >     Signed-off-by: Greg Kroah-Hartman <gregkh-l3A5Bk7waGM@public.gmane.org>
> > ------------------------------------------------------------------------------------------------------------
> > 
> > Both 2.6.27.8 and 2.6.28-rc8 with that commit reverted work fine
> > (well, at least they failed to show the bug so far).
> 
> Thanks for the update, I have put this information into the Bugzilla entry.
> 
> Would everyone involved agree with reverting the above commit for now 
> and revisiting the issue in the 2.6.29 time frame?

yeah - i think it's too late to do anything but a revert here.

	Ingo

Re: [Bug #12155] Regression in 2.6.28-rc and 2.6.27-stable - hibernate related

[Linus Torvalds]

On Tue, 16 Dec 2008, Ingo Molnar wrote:
> 
> yeah - i think it's too late to do anything but a revert here.

Yup. Already done. Commit ca7e716c7833aeaeb8fedd6d004c5f5d5e14d325.

Did -stable revert it too?

			Linus

Re: [Bug #12155] Regression in 2.6.28-rc and 2.6.27-stable - hibernate related

[Ingo Molnar]

* Linus Torvalds <torvalds-de/tnXTf+JLsfHDXvbKv3WD2FQJk+8+b@public.gmane.org> wrote:

> On Tue, 16 Dec 2008, Ingo Molnar wrote:
> > 
> > yeah - i think it's too late to do anything but a revert here.
> 
> Yup. Already done. Commit ca7e716c7833aeaeb8fedd6d004c5f5d5e14d325.
> 
> Did -stable revert it too?

not that i know of (-stable tries to follow upstream with reverts too).
We could have put a Cc: stable-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org into the reverter commit ;-)

	Ingo

Re: [Bug #12155] Regression in 2.6.28-rc and 2.6.27-stable - hibernate related

[Greg KH]

On Tue, Dec 16, 2008 at 08:18:27PM +0100, Ingo Molnar wrote:
> 
> * Linus Torvalds <torvalds-de/tnXTf+JLsfHDXvbKv3WD2FQJk+8+b@public.gmane.org> wrote:
> 
> > On Tue, 16 Dec 2008, Ingo Molnar wrote:
> > > 
> > > yeah - i think it's too late to do anything but a revert here.
> > 
> > Yup. Already done. Commit ca7e716c7833aeaeb8fedd6d004c5f5d5e14d325.
> > 
> > Did -stable revert it too?
> 
> not that i know of (-stable tries to follow upstream with reverts too).
> We could have put a Cc: stable-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org into the reverter commit ;-)

Yes, I'll go revert it later today, give me a chance to catch up :)

thanks,

greg k-h

[Bug #12155] Regression in 2.6.28-rc and 2.6.27-stable - hibernate related

[Rafael J. Wysocki]

This message has been generated automatically as a part of a report
of regressions introduced between 2.6.27 and 2.6.28.

The following bug entry is on the current list of known regressions
introduced between 2.6.27 and 2.6.28.  Please verify if it still should
be listed and let me know (either way).


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=12155
Subject		: Regression in 2.6.28-rc and 2.6.27-stable - hibernate related
Submitter	: Fabio Comolli <fabio.comolli-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
Date		: 2008-11-23 16:17 (50 days old)
First-Bad-Commit: http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=5e55aa8db085dad1aabb4574c73c23c7ae571e7b
References	: http://marc.info/?l=linux-kernel&m=122745709926361&w=4

Re: [Bug #12155] Regression in 2.6.28-rc and 2.6.27-stable - hibernate related

[Fabio Comolli]

It's been solved in 2.6.28-final and backported to 2.6.27.10 (a revert
of a Dave Kelikamp's commit).

On Sun, Jan 11, 2009 at 12:41 PM, Rafael J. Wysocki <rjw-KKrjLPT3xs0@public.gmane.org> wrote:
> This message has been generated automatically as a part of a report
> of regressions introduced between 2.6.27 and 2.6.28.
>
> The following bug entry is on the current list of known regressions
> introduced between 2.6.27 and 2.6.28.  Please verify if it still should
> be listed and let me know (either way).
>
>
> Bug-Entry       : http://bugzilla.kernel.org/show_bug.cgi?id=12155
> Subject         : Regression in 2.6.28-rc and 2.6.27-stable - hibernate related
> Submitter       : Fabio Comolli <fabio.comolli-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
> Date            : 2008-11-23 16:17 (50 days old)
> First-Bad-Commit: http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=5e55aa8db085dad1aabb4574c73c23c7ae571e7b
> References      : http://marc.info/?l=linux-kernel&m=122745709926361&w=4
>
>
>

Re: [Bug #12155] Regression in 2.6.28-rc and 2.6.27-stable - hibernate related

[Rafael J. Wysocki]

On Sunday 11 January 2009, Fabio Comolli wrote:
> It's been solved in 2.6.28-final and backported to 2.6.27.10 (a revert
> of a Dave Kelikamp's commit).
> 
> On Sun, Jan 11, 2009 at 12:41 PM, Rafael J. Wysocki <rjw-KKrjLPT3xs0@public.gmane.org> wrote:
> > This message has been generated automatically as a part of a report
> > of regressions introduced between 2.6.27 and 2.6.28.
> >
> > The following bug entry is on the current list of known regressions
> > introduced between 2.6.27 and 2.6.28.  Please verify if it still should
> > be listed and let me know (either way).
> >
> >
> > Bug-Entry       : http://bugzilla.kernel.org/show_bug.cgi?id=12155
> > Subject         : Regression in 2.6.28-rc and 2.6.27-stable - hibernate related
> > Submitter       : Fabio Comolli <fabio.comolli-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
> > Date            : 2008-11-23 16:17 (50 days old)
> > First-Bad-Commit: http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=5e55aa8db085dad1aabb4574c73c23c7ae571e7b
> > References      : http://marc.info/?l=linux-kernel&m=122745709926361&w=4

Thanks, closed.

Rafael