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This message contains a list of some regressions from 2.6.26, 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 2.6.26, 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 ---------------------------------------- 2008-10-04 181 41 33 2008-09-27 173 35 28 2008-09-21 169 45 36 2008-09-15 163 46 32 2008-09-12 163 51 38 2008-09-07 150 43 33 2008-08-30 135 48 36 2008-08-23 122 48 40 2008-08-16 103 47 37 2008-08-10 80 52 31 2008-08-02 47 31 20 Unresolved regressions ---------------------- Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=11700 Subject : ACPI instabilities and IRQs being disabled Submitter : Shawn Starr <shawn.starr@rogers.com> Date : 2008-09-27 22:40 (8 days old) References : http://marc.info/?l=linux-kernel&m=122255527412178&w=4 Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=11699 Subject : 2.6.27-rc-7: BUG: scheduling while atomic, c1e_idle+0x98/0xe0 Submitter : Prakash Punnoor <prakash@punnoor.de> Date : 2008-09-28 17:45 (7 days old) References : http://marc.info/?l=linux-kernel&m=122262403415629&w=4 Handled-By : Thomas Gleixner <tglx@linutronix.de> Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=11698 Subject : 2.6.27-rc7, freezes with &gt; 1 s2ram cycle Submitter : Soeren Sonnenburg <kernel@nn7.de> Date : 2008-09-29 11:29 (6 days old) References : ...
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 2.6.26. Please verify if it still should be listed and let me know (either way). Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=11207 Subject : VolanoMark regression with 2.6.27-rc1 Submitter : Zhang, Yanmin <yanmin_zhang@linux.intel.com> Date : 2008-07-31 3:20 (66 days old) References : http://marc.info/?l=linux-kernel&m=121747464114335&w=4 Handled-By : Zhang, Yanmin <yanmin_zhang@linux.intel.com> Peter Zijlstra <a.p.zijlstra@chello.nl> Dhaval Giani <dhaval@linux.vnet.ibm.com> Miao Xie <miaox@cn.fujitsu.com> --
Curious: what's happening with this one, handlers? Any progress being made? --
Sadly not much, I can't seem to reproduce :-( Yanmin, does the wakeup patch I did for oltp help this workload any? http://marc.info/?l=linux-kernel&m=122194673932703&w=4 --
This hits only when sched_compat_yield is set. Sadly, the machine which did reproduce this for me has gone down. Currently I am away from that machine for another two weeks. I can try giving it a shot again then. -- regards, Dhaval --
I tested it against 2.6.29-rc9 on 8-core stoakley and 16-core tigerton. volanoMark chatroom number is default 10. Basically, comparing with pure 2.6.27-rc9, the patched kernel's result has about 2% regression. Group scheduling is enabled. -yanmin --
Ok, so that didn't help. Thanks for testing! --
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 2.6.26. Please verify if it still should be listed and let me know (either way). Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=11209 Subject : 2.6.27-rc1 process time accounting Submitter : Lukas Hejtmanek <xhejtman@ics.muni.cz> Date : 2008-07-31 10:43 (66 days old) References : http://marc.info/?l=linux-kernel&m=121750102917490&w=4 http://lkml.org/lkml/2008/9/30/199 Handled-By : Peter Zijlstra <a.p.zijlstra@chello.nl> --
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 2.6.26. Please verify if it still should be listed and let me know (either way). Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=11210 Subject : libata badness Submitter : Kumar Gala <galak@kernel.crashing.org> Date : 2008-07-31 18:53 (66 days old) References : http://marc.info/?l=linux-ide&m=121753059307310&w=4 Handled-By : Kumar Gala <galak@kernel.crashing.org> --
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 2.6.26. Please verify if it still should be listed and let me know (either way). Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=11215 Subject : INFO: possible recursive locking detected ps2_command Submitter : Zdenek Kabelac <zdenek.kabelac@gmail.com> Date : 2008-07-31 9:41 (66 days old) References : http://marc.info/?l=linux-kernel&m=121749737011637&w=4 Handled-By : Peter Zijlstra <a.p.zijlstra@chello.nl> --
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 2.6.26. Please verify if it still should be listed and let me know (either way). Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=11220 Subject : Screen stays black after resume Submitter : Nico Schottelius <nico@schottelius.org> Date : 2008-07-31 21:05 (66 days old) References : http://marc.info/?l=linux-kernel&m=121753882422899&w=4 --
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 2.6.26. Please verify if it still should be listed and let me know (either way). Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=11224 Subject : Only three cores found on quad-core machine. Submitter : Dave Jones <davej@redhat.com> Date : 2008-08-01 18:15 (65 days old) References : http://marc.info/?l=linux-kernel&m=121761475224719&w=4 --
Dave, is your CPU2 getting stuck in calibrate_delay? Can you still reproduce the bug? What if you boot the kernel with lpj=<something sane like 2666785> in order to skip the calibrate_delay code? If that helps, can you try adding some printks to narrow down where it is getting stuck? --
On Wed, Oct 08, 2008 at 02:18:18AM +1100, Nick Piggin wrote: > On Sunday 05 October 2008 04:32, Rafael J. Wysocki 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 2.6.26. Please verify if it still should be listed and let me know > > (either way). > > > > > > Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=11224 > > Subject : Only three cores found on quad-core machine. > > Submitter : Dave Jones <davej@redhat.com> > > Date : 2008-08-01 18:15 (65 days old) > > References : http://marc.info/?l=linux-kernel&m=121761475224719&w=4 > > Dave, is your CPU2 getting stuck in calibrate_delay? Can you still > reproduce the bug? What if you boot the kernel with lpj=<something sane > like 2666785> in order to skip the calibrate_delay code? > > If that helps, can you try adding some printks to narrow down where it > is getting stuck? This is going to sound strange, but I've forgotten which box that was. I'm due to reinstall all my test boxes now that the next Fedora beta has come out anyway, so I'll hopefully figure out by the end of the week :) Dave -- http://www.codemonkey.org.uk --
That does sound strange ;) But I can't believe that! It would be really interesting if it was stuck in calibrate_delay, but maybe the backtrace is just messed up... If you do manage to reproduce it, I would be quite interested. Otherwise, I think we can say it's not a showstopper for 2.6.27. --
On Wed, Oct 08, 2008 at 03:24:40PM +1100, Nick Piggin wrote: > > > If that helps, can you try adding some printks to narrow down where it > > > is getting stuck? > > > > This is going to sound strange, but I've forgotten which box that was. > > I'm due to reinstall all my test boxes now that the next Fedora beta > > has come out anyway, so I'll hopefully figure out by the end of the week :) > > That does sound strange ;) But I can't believe that! It would be really > interesting if it was stuck in calibrate_delay, but maybe the backtrace > is just messed up... > > If you do manage to reproduce it, I would be quite interested. Otherwise, > I think we can say it's not a showstopper for 2.6.27. agreed. I clearly have too many other shiny toys. Dave -- http://www.codemonkey.org.uk --
On Wed, Oct 08, 2008 at 03:24:40PM +1100, Nick Piggin wrote: > On Wednesday 08 October 2008 02:32, Dave Jones wrote: > > On Wed, Oct 08, 2008 at 02:18:18AM +1100, Nick Piggin wrote: > > > On Sunday 05 October 2008 04:32, Rafael J. Wysocki 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 2.6.26. Please verify if it still should be listed and let me > > > > know (either way). > > > > > > > > > > > > Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=11224 > > > > Subject : Only three cores found on quad-core machine. > > > > Submitter : Dave Jones <davej@redhat.com> > > > > Date : 2008-08-01 18:15 (65 days old) > > > > References : http://marc.info/?l=linux-kernel&m=121761475224719&w=4 > > > > > > Dave, is your CPU2 getting stuck in calibrate_delay? Can you still > > > reproduce the bug? What if you boot the kernel with lpj=<something sane > > > like 2666785> in order to skip the calibrate_delay code? > > > > > > If that helps, can you try adding some printks to narrow down where it > > > is getting stuck? > > > > This is going to sound strange, but I've forgotten which box that was. > > I'm due to reinstall all my test boxes now that the next Fedora beta > > has come out anyway, so I'll hopefully figure out by the end of the week :) > > That does sound strange ;) But I can't believe that! It would be really > interesting if it was stuck in calibrate_delay, but maybe the backtrace > is just messed up... > > If you do manage to reproduce it, I would be quite interested. Otherwise, > I think we can say it's not a showstopper for 2.6.27. Ok, this can be closed out. 2.6.27 seems to work fine on all the quad core machines I have in my cube. Dave -- http://www.codemonkey.org.uk --
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 2.6.26. Please verify if it still should be listed and let me know (either way). Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=11271 Subject : BUG: fealnx in 2.6.27-rc1 Submitter : Jaswinder Singh <jaswinderlinux@gmail.com> Date : 2008-08-05 14:58 (61 days old) References : http://marc.info/?l=linux-netdev&m=121794762016830&w=4 http://lkml.org/lkml/2008/8/10/98 Handled-By : Francois Romieu <romieu@fr.zoreil.com> --
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 2.6.26. Please verify if it still should be listed and let me know (either way). Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=11272 Subject : BUG: parport_serial in 2.6.27-rc1 for NetMos Technology PCI 9835 Submitter : Jaswinder Singh <jaswinderlinux@gmail.com> Date : 2008-08-05 15:12 (61 days old) References : http://marc.info/?l=linux-kernel&m=121794900319776&w=4 --
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 2.6.26. Please verify if it still should be listed and let me know (either way). Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=11264 Subject : Invalid op opcode in kernel/workqueue Submitter : Jean-Luc Coulon <jean.luc.coulon@gmail.com> Date : 2008-08-07 04:18 (59 days old) --
Any progress being made with this one? Dave, Oleg did some pretty nice looking debugging work that indicates it might be a cpufreq problem. Have you had a chance to look at the comments in the bugzilla? Or have you been cc'ed on patches for this? Thanks, Nick --
On Wed, Oct 08, 2008 at 02:23:03AM +1100, Nick Piggin wrote: > On Sunday 05 October 2008 04:32, Rafael J. Wysocki 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 2.6.26. Please verify if it still should be listed and let me know > > (either way). > > > > > > Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=11264 > > Subject : Invalid op opcode in kernel/workqueue > > Submitter : Jean-Luc Coulon <jean.luc.coulon@gmail.com> > > Date : 2008-08-07 04:18 (59 days old) > > Any progress being made with this one? Dave, Oleg did some pretty > nice looking debugging work that indicates it might be a cpufreq > problem. Have you had a chance to look at the comments in the > bugzilla? Or have you been cc'ed on patches for this? I'm not convinced that the original report wasn't hardware related. We had taken a machine check exception already, which shows that something isn't quite right. MCEs happening under high load are usually a sign of thermal/power problems of some sort. Oleg's comments may still hold true, independant of the report. I've added Venki to the Cc: as he's recently rewritten considerable amounts of the ondemand governor (though the workqueue mechanics are pretty much the same). Dave -- http://www.codemonkey.org.uk --
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 2.6.26. Please verify if it still should be listed and let me know (either way). Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=11230 Subject : Kconfig no longer outputs a .config with freshly updated defconfigs Submitter : Josh Boyer <jwboyer@linux.vnet.ibm.com> Date : 2008-08-02 16:03 (64 days old) References : http://marc.info/?l=linux-kernel&m=121769306319391&w=4 --
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 2.6.26. Please verify if it still should be listed and let me know (either way). Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=11308 Subject : tbench regression on each kernel release from 2.6.22 -&gt; 2.6.28 Submitter : Christoph Lameter <cl@linux-foundation.org> Date : 2008-08-11 18:36 (55 days old) References : http://marc.info/?l=linux-kernel&m=121847986119495&w=4 http://marc.info/?l=linux-kernel&m=122125737421332&w=4 --
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 2.6.26. Please verify if it still should be listed and let me know (either way). Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=11407 Subject : suspend: unable to handle kernel paging request Submitter : Vegard Nossum <vegard.nossum@gmail.com> Date : 2008-08-21 17:28 (45 days old) References : http://marc.info/?l=linux-kernel&m=121933974928881&w=4 Handled-By : Rafael J. Wysocki <rjw@sisk.pl> Pekka Enberg <penberg@cs.helsinki.fi> Pavel Machek <pavel@suse.cz> --
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 2.6.26. Please verify if it still should be listed and let me know (either way). Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=11340 Subject : LTP overnight run resulted in unusable box Submitter : Alexey Dobriyan <adobriyan@gmail.com> Date : 2008-08-13 9:24 (53 days old) References : http://marc.info/?l=linux-kernel&m=121861951902949&w=4 --
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 2.6.26. Please verify if it still should be listed and let me know (either way). Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=11442 Subject : btusb hibernation/suspend breakage in current -git Submitter : Rafael J. Wysocki <rjw@sisk.pl> Date : 2008-08-25 11:37 (41 days old) References : http://marc.info/?l=linux-bluetooth&m=121966402012074&w=4 Handled-By : Oliver Neukum <oliver@neukum.org> Patch : http://marc.info/?l=linux-bluetooth&m=121967226027323&w=4 http://bugzilla.kernel.org/show_bug.cgi?id=11442#c1 --
the patch is not the actual fix for it. It is just a band aid. As you
confirmed, the double free patch fixes it. See my pull request, but it
didn't make it into Linus' tree yet.
Regards
Marcel
Please pull from
git://git.kernel.org/pub/scm/linux/kernel/git/holtmann/bluetooth-2.6.git master
This will update the following files:
drivers/bluetooth/bpa10x.c | 2 --
drivers/bluetooth/btusb.c | 7 ++++---
2 files changed, 4 insertions(+), 5 deletions(-)
through these ChangeSets:
Marcel Holtmann (2):
[Bluetooth] Fix double frees on error paths of btusb and bpa10x drivers
[Bluetooth] Add reset quirk for new Targus and Belkin dongles
--
I know, I didn't close this entry just because the fix is not yet in the Linus' tree. Thanks, --
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 2.6.26. Please verify if it still should be listed and let me know (either way). Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=11380 Subject : lockdep warning: cpu_add_remove_lock at:cpu_maps_update_begin+0x14/0x16 Submitter : Ingo Molnar <mingo@elte.hu> Date : 2008-08-20 6:44 (46 days old) References : http://marc.info/?l=linux-kernel&m=121921480931970&w=4 --
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 2.6.26. Please verify if it still should be listed and let me know (either way). Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=11404 Subject : BUG: in 2.6.23-rc3-git7 in do_cciss_intr Submitter : rdunlap <randy.dunlap@oracle.com> Date : 2008-08-21 5:52 (45 days old) References : http://marc.info/?l=linux-kernel&m=121929819616273&w=4 http://marc.info/?l=linux-kernel&m=121932889105368&w=4 Handled-By : Miller, Mike (OS Dev) <Mike.Miller@hp.com> James Bottomley <James.Bottomley@hansenpartnership.com> --
Also happened with 2.6.27-git2. -- ~Randy --
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 2.6.26. Please verify if it still should be listed and let me know (either way). Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=11476 Subject : failure to associate after resume from suspend to ram Submitter : Michael S. Tsirkin <m.s.tsirkin@gmail.com> Date : 2008-09-01 13:33 (34 days old) References : http://marc.info/?l=linux-kernel&m=122028529415108&w=4 Handled-By : Zhu Yi <yi.zhu@intel.com> Dan Williams <dcbw@redhat.com> Jouni Malinen <j@w1.fi> --
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 2.6.26. Please verify if it still should be listed and let me know (either way). Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=11516 Subject : severe performance degradation on x86_64 going from 2.6.26-rc9 -&gt; 2.6.27-rc5 Submitter : Jason Vas Dias <jason.vas.dias@gmail.com> Date : 2008-09-07 13:59 (28 days old) --
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 2.6.26. Please verify if it still should be listed and let me know (either way). Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=11512 Subject : sort-of regression due to "kconfig: speed up all*config + randconfig" Submitter : Alexey Dobriyan <adobriyan@gmail.com> Date : 2008-09-05 22:50 (30 days old) References : http://marc.info/?l=linux-kernel&m=122065498013858&w=4 --
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 2.6.26. Please verify if it still should be listed and let me know (either way). Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=11543 Subject : kernel panic: softlockup in tick_periodic() ??? Submitter : Joshua Hoblitt <j_kernel@hoblitt.com> Date : 2008-09-11 16:46 (24 days old) References : http://marc.info/?l=linux-kernel&m=122117786124326&w=4 Handled-By : Thomas Gleixner <tglx@linutronix.de> Cyrill Gorcunov <gorcunov@gmail.com> Ingo Molnar <mingo@elte.hu> --
[Rafael J. Wysocki - Sat, Oct 04, 2008 at 07:32:52PM +0200] | 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 2.6.26. Please verify if it still should be listed and let me know | (either way). | | | Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=11543 | Subject : kernel panic: softlockup in tick_periodic() ??? | Submitter : Joshua Hoblitt <j_kernel@hoblitt.com> | Date : 2008-09-11 16:46 (24 days old) | References : http://marc.info/?l=linux-kernel&m=122117786124326&w=4 | Handled-By : Thomas Gleixner <tglx@linutronix.de> | Cyrill Gorcunov <gorcunov@gmail.com> | Ingo Molnar <mingo@elte.hu> | | So we're waiting for his verdict. - Cyrill - --
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 2.6.26. Please verify if it still should be listed and let me know (either way). Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=11568 Subject : spontaneous reboot on resume with 2.6.27 Submitter : Andy Wettstein <ajw1980@gmail.com> Date : 2008-09-14 20:00 (21 days old) --
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 2.6.26. Please verify if it still should be listed and let me know (either way). Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=11569 Subject : Don't complain about disabled irqs when the system has paniced Submitter : Andi Kleen <andi@firstfloor.org> Date : 2008-09-02 13:49 (33 days old) References : http://marc.info/?l=linux-kernel&m=122036356127282&w=4 --
The problem is actually worse than this description suggests. I updated the bugzilla entry now. The new smp_call_function() that is called from panic is quite unsuitable for this task: - It allocates memory (not a good idea in panic0 - It complains about interrupt off - This whole thing breaks at least machine checks -Andi -- ak@linux.intel.com --
Why doesn't it use something like nmi_shootdown_cpus on panic rather than the (I guess less reliable and longer latency) smp_send_stop? --
> Why doesn't it use something like nmi_shootdown_cpus on panic rather than There are unfortunately a couple of BIOS around that hang randomly when NMIs are used (e.g. common problem on ThinkPads). That broke the neck of the NMI watchdog too. But yes if we had some way to distingush these broken systems from sane ones NMI would be the way to go in panic. -Andi -- ak@linux.intel.com --
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 2.6.26. Please verify if it still should be listed and let me know (either way). Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=11549 Subject : 2.6.27-rc5 acpi: EC Storm error message on bootup Submitter : <jmerkey@wolfmountaingroup.com> Date : 2008-09-02 21:27 (33 days old) References : http://marc.info/?l=linux-kernel&m=122039255517586&w=4 Handled-By : Alexey Starikovskiy <astarikovskiy@suse.de> Patch : http://bugzilla.kernel.org/attachment.cgi?id=18047&action=view --
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 2.6.26. Please verify if it still should be listed and let me know (either way). Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=11550 Subject : pnp: Huge number of "io resource overlap" messages Submitter : Frans Pop <elendil@planet.nl> Date : 2008-09-09 10:50 (26 days old) References : http://marc.info/?l=linux-kernel&m=122095745403793&w=4 Handled-By : Rene Herman <rene.herman@keyaccess.nl> Bjorn Helgaas <bjorn.helgaas@hp.com> Patch : http://marc.info/?l=linux-kernel&m=122246533505643&w=4 --
The structural patch for this from Bjorn got NACKed. AFAIK we're still waiting for someone (Bjorn?) to decide whether to go with a simpler patch from Rene for .27 and to push that. For me it was possible to work around the issue by changing a BIOS setting, but I expect it will still affect others with similar BIOS behavior. --
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 2.6.26. Please verify if it still should be listed and let me know (either way). Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=11505 Subject : oltp ~10% regression with 2.6.27-rc5 on stoakley machine Submitter : Lin Ming <ming.m.lin@intel.com> Date : 2008-09-04 7:06 (31 days old) References : http://marc.info/?l=linux-kernel&m=122051202202373&w=4 http://marc.info/?t=122089704700005&r=1&w=4 Handled-By : Peter Zijlstra <a.p.zijlstra@chello.nl> Gregory Haskins <ghaskins@novell.com> Ingo Molnar <mingo@elte.hu> Patch : http://marc.info/?l=linux-kernel&m=122194673932703&w=4 --
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 2.6.26. Please verify if it still should be listed and let me know (either way). Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=11608 Subject : 2.6.27-rc6 BUG: unable to handle kernel paging request Submitter : John Daiker <daikerjohn@gmail.com> Date : 2008-09-16 23:00 (19 days old) References : http://marc.info/?l=linux-kernel&m=122160611517267&w=4 --
As I wrote (and you copied to the bugzilla), this looks a bitflip in one of the ptes... But no harm in waiting for the reporter to confirm or disprove before we strike it off the list :) --
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 2.6.26. Please verify if it still should be listed and let me know (either way). Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=11615 Subject : sata_nv EH problems Submitter : Pär Andersson <paran@lysator.liu.se> Date : 2008-09-21 18:09 (14 days old) Handled-By : Tejun Heo <tj@kernel.org> Patch : http://bugzilla.kernel.org/attachment.cgi?id=18078&action=view --
Merged in: http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=4c1eb9... -- Thomas --
Thanks, closed. Rafael --
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 2.6.26. Please verify if it still should be listed and let me know (either way). Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=11643 Subject : ALSA sound/core/pcm_native.c:1947: BUG? (err &gt;= 0) Submitter : sangu <sangu.gnome@gmail.com> Date : 2008-09-24 16:51 (11 days old) --
At Sat, 4 Oct 2008 19:32:55 +0200 (CEST), This is unlikely a 2.6.27 regression. It's a bug to be fixed, though. Takashi --
Dropped from the list. Thanks, Rafael --
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 2.6.26. Please verify if it still should be listed and let me know (either way). Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=11634 Subject : Sometime my laptop is dead on resume from ram Submitter : Romano Giannetti <romano.giannetti@gmail.com> Date : 2008-09-24 01:12 (11 days old) --
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 2.6.26. Please verify if it still should be listed and let me know (either way). Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=11629 Subject : quad G5 fails to shut down Submitter : Johannes Berg <johannes@sipsolutions.net> Date : 2008-09-23 14:20 (12 days old) Handled-By : Johannes Berg <johannes@sipsolutions.net> Patch : http://bugzilla.kernel.org/show_bug.cgi?id=11629#c8 --
Merged in: http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=61e991... -- Thomas --
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 2.6.26. Please verify if it still should be listed and let me know (either way). Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=11676 Subject : 2.6.27-rc2 to rc8, apgart fails, iommu=soft works, regression Submitter : Duncan <1i5t5.duncan@cox.net> Date : 2008-09-30 10:24 (5 days old) --
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 2.6.26. Please verify if it still should be listed and let me know (either way). Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=11696 Subject : 2.6.27-rc8 doubled times Submitter : Hugh Dickins <hugh@veritas.com> Date : 2008-10-03 10:21 (2 days old) References : http://marc.info/?l=linux-kernel&m=122302939313636&w=4 Handled-By : Thomas Gleixner <tglx@linutronix.de> Patch : http://marc.info/?l=linux-kernel&m=122307260621434&w=4 --
Can now be closed, thanks Rafael: Linus has taken Thomas's commit 07454bfff151d2465ada809bbaddf3548cc1097c clockevents: check broadcast tick device not the clock events device and I've just confirmed that the latest git indeed fixes the issue. Hugh --
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 2.6.26. Please verify if it still should be listed and let me know (either way). Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=11664 Subject : acpi errors and random freeze on sony vaio sr Submitter : Giovanni Pellerano <giovanni.pellerano@gmail.com> Date : 2008-09-28 03:48 (7 days old) --
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 2.6.26. Please verify if it still should be listed and let me know (either way). Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=11695 Subject : USB disconnects every 30 seconds Submitter : Dave Hansen <dave@sr71.net> Date : 2008-10-03 17:45 (2 days old) References : http://marc.info/?l=linux-kernel&m=122305738430115&w=4 Handled-By : Alan Stern <stern@rowland.harvard.edu> --
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 2.6.26. Please verify if it still should be listed and let me know (either way). Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=11698 Subject : 2.6.27-rc7, freezes with &gt; 1 s2ram cycle Submitter : Soeren Sonnenburg <kernel@nn7.de> Date : 2008-09-29 11:29 (6 days old) References : http://marc.info/?l=linux-kernel&m=122268780926859&w=4 Handled-By : Rafael J. Wysocki <rjw@sisk.pl> --
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 2.6.26. Please verify if it still should be listed and let me know (either way). Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=11697 Subject : CD tray closes spontaneously after opening it Submitter : Frans Pop <elendil@planet.nl> Date : 2008-09-30 10:47 (5 days old) References : http://marc.info/?l=linux-kernel&m=122277167125264&w=4 Handled-By : Kay Sievers <kay.sievers@vrfy.org> --
I have not been able to reproduce this recently. I also don't think it's really worth tracking this as a regression as there's still a lot of uncertainty as to what the cause is. Cheers, FJP --
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 2.6.26. Please verify if it still should be listed and let me know (either way). Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=11700 Subject : ACPI instabilities and IRQs being disabled Submitter : Shawn Starr <shawn.starr@rogers.com> Date : 2008-09-27 22:40 (8 days old) References : http://marc.info/?l=linux-kernel&m=122255527412178&w=4 --
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 2.6.26. Please verify if it still should be listed and let me know (either way). Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=11701 Subject : sky2 wol regression Submitter : Tino Keitel <tino.keitel@gmx.de> Date : 2008-09-24 8:05 (11 days old) References : http://marc.info/?l=linux-kernel&m=122224359222164&w=4 Handled-By : Rafael J. Wysocki <rjw@sisk.pl> Patch : http://marc.info/?l=linux-kernel&m=122298334522551&w=4 --
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 2.6.26. Please verify if it still should be listed and let me know (either way). Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=11699 Subject : 2.6.27-rc-7: BUG: scheduling while atomic, c1e_idle+0x98/0xe0 Submitter : Prakash Punnoor <prakash@punnoor.de> Date : 2008-09-28 17:45 (7 days old) References : http://marc.info/?l=linux-kernel&m=122262403415629&w=4 Handled-By : Thomas Gleixner <tglx@linutronix.de> --
Hi. Just for the reference, this one regresses from the 2.6.23. Particular 2.6.26-27 part can be partially fixed by disabling TSO/GSO, since tbench workload issues quite small packets, and system has no time to incorporate them into particulary big TSO/GSO frame to get advantage of this technology. The most noticeble perfromance drop was between 23 and This one is different, but any other benchmark related to network over loopback (and in some case over other media) performance degradation should be very likely handled by the above case. -- Evgeniy Polyakov --
Still, tbench results from 2.6.26 are better than from 2.6.27-rc. That's why it's still on the list, but if you think that's not relevant, please let me know and I'll drop it. Thanks, Rafael --
Note that 2.6.27 beats 2.6.26 by 30% with bulk traffic over loopback as opposed to the small packets sent by tbench where I saw a 5% drop in performance on my machine. So I'm not sure whether this should really be classified as a regression if we limit ourselves to the changes between 26 and 27. The changes prior to 26 seem to be more significant. Chyeers, -- Visit Openswan at http://www.openswan.org/ Email: Herbert Xu ~{PmV>HI~} <herbert@gondor.apana.org.au> Home Page: http://gondor.apana.org.au/~herbert/ PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt --
Hi. Yes, that's the point, TSO over loopback for big packets or workload where there packets can be easily combined into big one results in a fair performance improvement, but for small packets it regresses about 5-10 %. And yes, there are yet unresolved changes which caused bigger performance degradation. -- Evgeniy Polyakov --
I meant it continuously regresses from .23 including 26-27 timeframe. There were at least two changes in 26-27 which caused tbench regression in this particular time interval. One of them enabled TSO over loopback by default, so one can turn it off via ethtools or this patch: http://marc.info/?l=linux-netdev&m=122263663631600&w=2 another (hopefully) one I'm trying to find out, which is a bit complex and slow, since e1000 driver changes in the middle of the 26-27 timeframe does not allow my testing machines to boot. So, there is a regression (partially resolved), but it is only part of the problem. -- Evgeniy Polyakov --
