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Date: Sun, 27 Jan 2013 14:01:50 +0100 From: Sedat Dilek <sedat.dilek@...il.com> To: "Rafael J. Wysocki" <rjw@...k.pl> Cc: Stephen Rothwell <sfr@...b.auug.org.au>, linux-next@...r.kernel.org, linux-kernel@...r.kernel.org, Linux PM List <linux-pm@...ts.linux-foundation.org>, Linux ACPI <linux-acpi@...r.kernel.org>, Sasha Levin <sasha.levin@...cle.com>, Tejun Heo <tj@...nel.org> Subject: Re: linux-next: Tree for Jan 25 (BROKEN suspend) On Sat, Jan 26, 2013 at 10:49 PM, Rafael J. Wysocki <rjw@...k.pl> wrote: > On Saturday, January 26, 2013 07:27:06 PM Sedat Dilek wrote: >> On Sat, Jan 26, 2013 at 4:05 PM, Sedat Dilek <sedat.dilek@...il.com> wrote: >> > On Sat, Jan 26, 2013 at 3:33 PM, Sedat Dilek <sedat.dilek@...il.com> wrote: >> >> On Sat, Jan 26, 2013 at 2:24 PM, Sedat Dilek <sedat.dilek@...il.com> wrote: >> >>> On Sat, Jan 26, 2013 at 2:25 PM, Rafael J. Wysocki <rjw@...k.pl> wrote: >> >>>> On Saturday, January 26, 2013 12:10:32 PM Sedat Dilek wrote: >> >>>>> On Fri, Jan 25, 2013 at 6:26 AM, Stephen Rothwell <sfr@...b.auug.org.au> wrote: >> >>>>> > Hi all, >> >>>>> > >> >>>>> > Changes since 20130124: >> >>>>> > >> >>>>> > New trees: ipsec and ipsec-next >> >>>>> > >> >>>>> > The powerpc tree still had a build failure. >> >>>>> > >> >>>>> > The sound-asoc tree still had its build failure so I used the version from >> >>>>> > next-20130122. >> >>>>> > >> >>>>> > The akpm tree lost its build failure and several patches that turned up >> >>>>> > elsewhere. >> >>>>> > >> >>>>> > ---------------------------------------------------------------------------- >> >>>>> > >> >>>>> >> >>>>> Unfortunately, on suspend or running the pm_test/freezer leads here to >> >>>>> a frozen machine - hard reset. >> >>>>> >> >>>>> I see 4-5 pages of call-traces but dunno how to log them in such a f-u-ed state. >> >>>>> Any hints welcome! >> >>>>> >> >>>>> As I saw catched with my left eye on one call-trace sth. with... >> >>>>> >> >>>>> kernel/watchdog.c (line #245, watchdog_overflow_callback) >> >>>>> >> >>>>> ... I tried to revert the last two commits from Sascha (see -3 patch, >> >>>>> but no success. >> >>>>> >> >>>>> The same with reverting all cpu-freq changes since v3.8-rc4 (see -4 >> >>>>> patch) after seeing some suspicious lines on the screen. >> >>>>> >> >>>>> Can someone confirm that suspend is BROKEN for him/her before doing >> >>>>> eventually a bisect? >> >>>> >> >>>> Can you please test the linux-next branch of the linux-pm.git tree alone? >> >>>> >> >>> >> >>> That sounds like a good idea as I just reverted "cpu-hotplug, >> >>> memory-hotplug: try offlining the node when hotremoving a cpu" [1] >> >>> from akpm tree. >> >>> Building... 1st with revert than trying pm-next only. >> >>> >> >> >> >> Your pm-next tree is fine here. >> >> >> >> commit 0b9d032a2bf0a0224ef446f3d6048fdd8a5b8280 >> >> "Merge branch 'pm-cpufreq-next' into linux-next linux-next" >> >> >> >> Furthermore, the culprit is not between akpm-master and akpm-current >> >> as I have seen cpu/mem hotplug and pm changes there. >> >> >> >> Hmm, maybe bisecting would have been faster than hunting on suspicious commits. >> >> >> >> - Sedat - >> >> >> >>> - Sedat - >> >>> >> >>> [1] http://git.kernel.org/?p=linux/kernel/git/next/linux-next.git;a=commitdiff;h=154cb61f36690edef68beb5fd9dc0a5027f9dbd9 >> >>> >> >>>> Rafael >> >>>> >> >>>> >> >>>> -- >> >>>> I speak only for myself. >> >>>> Rafael J. Wysocki, Intel Open Source Technology Center. >> > >> > I merged on top of my Linux-v3.8-rc5 GIT branch... >> > >> > Sedat Dilek (8): >> > mei: Fix some more kernel-doc typos in hw-me.c >> > kbuild: deb-pkg: Try to determine distribution >> > kbuild: deb-pkg: Bump year in debian/copyright file >> > kbuild: deb-pkg: Update git repository URL in debian/copyright file >> > Merge tag 'next-20130124' of >> > git://git.kernel.org/.../next/linux-next into Linux-Next-v20130124 >> > Merge branch 'deb-pkg-fixes' into 3.8.0-rc5-next20130124-1-pmnext-generic >> > Merge branch 'Linux-Next-v20130124' into >> > 3.8.0-rc5-next20130124-1-pmnext-generic >> > Merge branch 'pm-next' into 3.8.0-rc5-next20130124-1-pmnext-generic >> > >> > ...and this f-u-s the machine as well. >> > So, the culprit seems not to get from your PM stuff. >> > >> > Anyway, this does not help me... but hope it's good news for you, Rafael :-)! >> > >> > - Sedat - >> >> This tells me ZERO... >> >> $ cat git-bisect-log.txt >> git bisect start >> # bad: [a8ae185b9edd81927bd762b89a327617e3e7a1e8] Add linux-next >> specific files for 20130124 >> git bisect bad a8ae185b9edd81927bd762b89a327617e3e7a1e8 >> # good: [7d1f9aeff1ee4a20b1aeb377dd0f579fe9647619] Linux 3.8-rc4 >> git bisect good 7d1f9aeff1ee4a20b1aeb377dd0f579fe9647619 >> # bad: [5a4e73d60a0f01a39c602e3c2cbb2f136268f717] Merge >> remote-tracking branch 'spi-mb/spi-next' >> git bisect bad 5a4e73d60a0f01a39c602e3c2cbb2f136268f717 >> # good: [9b70ab49707f2db028b29664600db3fcf2221abd] Merge >> remote-tracking branch 'slave-dma/next' >> git bisect good 9b70ab49707f2db028b29664600db3fcf2221abd >> # good: [97b57dc123017c4d748fdf2abdd9a9231239c437] Merge >> remote-tracking branch 'crypto/master' >> git bisect good 97b57dc123017c4d748fdf2abdd9a9231239c437 >> # good: [6ab8307c4b30d2414bbbc192d3b07819b2a2ec1e] 20130122/sound-asoc >> git bisect good 6ab8307c4b30d2414bbbc192d3b07819b2a2ec1e >> # good: [76e51c3f858996beb6de0dfd03838ec04f9c6203] Merge >> remote-tracking branch 'mmc/mmc-next' >> git bisect good 76e51c3f858996beb6de0dfd03838ec04f9c6203 >> # good: [25dcea3017741797805c1279d013108b220b6aea] Merge >> remote-tracking branch 'battery/master' >> git bisect good 25dcea3017741797805c1279d013108b220b6aea >> # good: [c051f41da8c60f0945d295b736aa3c0331ac85bc] Merge >> remote-tracking branch 'regulator/for-next' >> git bisect good c051f41da8c60f0945d295b736aa3c0331ac85bc >> # good: [6f9801536a9bea9f405971fab8abbba929138738] Merge >> remote-tracking branch 'iommu/next' >> git bisect good 6f9801536a9bea9f405971fab8abbba929138738 >> # good: [58e49ef6da7f434698699a20683408b2c041081d] Merge >> remote-tracking branch 'trivial/for-next' >> git bisect good 58e49ef6da7f434698699a20683408b2c041081d >> # good: [33cb219590de91b65a9d0e995dbf26642d5d32e0] Merge >> remote-tracking branch 'edac-amd/for-next' >> git bisect good 33cb219590de91b65a9d0e995dbf26642d5d32e0 >> # good: [7a5d8ca12aece480e0fe5eda8ce4236dddf55363] spi: bitbang: >> simplify pointer arithmetics >> git bisect good 7a5d8ca12aece480e0fe5eda8ce4236dddf55363 >> # good: [bf2084d51182ed0fa1fcf3febd80b308d2e62b20] Merge >> remote-tracking branch 'dt-rh/for-next' >> git bisect good bf2084d51182ed0fa1fcf3febd80b308d2e62b20 >> # good: [f28037d2e9ee1fe34ede6211f1cce1d38d867cb8] MAINTAINERS: Add >> myself as a backup maintainer for SPI >> git bisect good f28037d2e9ee1fe34ede6211f1cce1d38d867cb8 >> >> $ cat git-bisect-view--stat.txt >> commit 5a4e73d60a0f01a39c602e3c2cbb2f136268f717 >> Merge: bf2084d f28037d >> Author: Stephen Rothwell <sfr@...b.auug.org.au> >> Date: Thu Jan 24 13:49:47 2013 +1100 >> >> Merge remote-tracking branch 'spi-mb/spi-next' > > Well, perhaps try to test the spi-mb/spi-next branch alone? > Hi, I have reseted to the commit-id of spi-mb/spi-next in my local Linux-Next-v20130124 GIT repo... which was fine. After 3 git-bisect sessions gave me no clear culprit, I changed my strategy to "braino-bisecting"... BAD: next-20130124 BAD: up to akpm-master BAD: up to akpm-current BAD: up to for-3.9-async-next <--- ErrMsgs on the screen GOOD: v3.8-rc4 GOOD: up to spi-mb/spi-next <--- "Result" from 1st git-bisect session GOOD: up to bluetooth-master <--- ErrMsgs on the screen TESTING: perf-urgent-for-mingo (Merge before for-3.9-async-next) <--- Good? Then I remembered a lot of "async" warnings in my call-traces on the screen. After seeing "wq-async-next" (for-3.9-async-next) is BAD, I checked Tejun's workqueues (wq) GIT repository. The Next/Trees file in Linux-Next lists for the responsible GIT repo and branch for wq: workqueues git git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq.git#for-next I am testing now with a pending patch in Tejun's for-3.9-async GIT branch: commit a0327ff0eda915be623658babacef706099c11a8 "async: initialise list heads to fix crash" ...and YES this fixes here PM-suspend and resume is fine, again. OK, that bisecting ruined a bit my weekend and showed me again you cannot really bisect Linux-Next. Sometimes, it is better not to trust the tools blindly and do a bisect-on-suspicion. Anyway... cultprit found... patch found... applied... all GOOD now. ( If I had waited for next Monday's next-20130127 I would not have seen what caused the trouble. ). Happy rest-weekend, - Sedat - [0] http://git.kernel.org/?p=linux/kernel/git/tj/wq.git;a=summary [1] http://git.kernel.org/?p=linux/kernel/git/tj/wq.git;a=commit;h=a0327ff0eda915be623658babacef706099c11a8 > Rafael > > > -- > I speak only for myself. > Rafael J. Wysocki, Intel Open Source Technology Center. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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