/srv/irclogs.ubuntu.com/2011/08/11/#ubuntu-kernel.txt

Tm_THi, how do I could debug a kernel panic, possibly caused by a scheduler07:37
Tm_TI have ~daily kernel panics, and I see line of "BUG: Error while scheduling atomic: <binary that was active at that time>" sort07:38
Tm_Tthis is 2.6.38-11-generic running on Intel, I suppose this CPU: http://ark.intel.com/products/41498/Intel-Celeron-Processor-900-%281M-Cache-2_20-GHz-800-MHz-FSB%2907:43
* apw yawns, bouncy internet this morning, not good07:53
Tm_Theh, struggled 2 first hours in the office for constantly disconnecting wlan07:54
Tm_Ts/for/with/07:54
jk-hey apw07:54
apwmorning07:54
jk-been keeping the rioters at bay?07:54
apwjk-, two nights ago they were burning dowm the shops 5 mins from my house, but its sounding quieter now07:55
jk-jeeeez :/07:55
apwjk-, first and only time i've packed a bag in case i had to run07:56
apwand i lived though the constant bombing by the IRA, somehow this is more dangerous, more random07:56
apwbut i heard nothing last night so perhaps we are past the worst07:59
jk-i hope so...08:01
apwwe have had a pile of police on the streets, thats going to cost a few bob sadly08:13
apw"peaceful night across the country" is todays message ... phew08:13
apw"those who think they have got away with looting will be supprised today when the doors start to go in" like the sound of that08:16
=== yofel_ is now known as yofel
hggdhsconklin: bug 824520 during QA for 2.6.38-11.48, generic-pae. Did not reoccur, so I am not marking as failure. Nevertheless you folks should have a look13:11
ubot2Launchpad bug 824520 in linux "WARNING: at /build/buildd/linux-2.6.38/arch/x86/kernel/apic/ipi.c :109 default_send_IPI_mask_logical+0xb1/0xf0()" [Undecided,New] https://launchpad.net/bugs/82452013:11
=== smb` is now known as smb
sconklinhggdh: all testing results like this need to be posted to the tracking bug, so they aren't lost on IRC. I've copied this one to the bug. I'll have a look and see whether we should pass it or not13:52
hggdhsconklin: I was giving yuou advance warning. When I finish a test sequence, I write in anything interesting, including bugs. No need to tell me this should go into the tracking bug13:54
sconklinhggdh: ok, thanks, sorry to jump on that13:54
sconklinmaybe I can have an answer before you are done13:55
hggdhthis is my hope. I cannot tie it to the kernel so far13:55
sijiHi All,13:59
sijiFirst want to report some bugs in ubuntu-natty kernel (for ARM) 13:59
sijithe default driver module for Touchscreen ads786 is not the right one 14:00
sijiAnd now am trying to build this module , but not succeeded 14:01
sijiSteps followed : Downloaded the kernel source from rep. by apt-get install linux-source14:02
sconklinhggdh: Any idea which test was running when this occurred? Maybe it's in the logs and I don't know where to look14:02
siji make modules SUBDIRS=drivers/input/touchscreen/14:03
khanxhey everybody14:03
khanxim new to this... which languages do i need to know to customize my kernel ?14:04
sijiEnglish & C :)14:04
khanxso far so good. :P14:05
siji:)14:05
khanxim not so familiar with ubuntu though. like i said im new to linux, but im not bad with C and java14:06
sijiThen i suggest you to familiar with linux/ubuntu first then get into Linux Kernel 14:07
khanxand whats your advice on how to become familiar with ubuntu fast?14:08
khanxi feel like its gonna take ages14:08
khanxany e-book or online texts recommended ?14:09
sijinot at all 14:09
sijiDownload ubuntu ISO isntall it and play with it14:09
hggdhsconklin: at this point in time it was the LPT lite14:09
hggdhit really does not help that a lot of programs get to print warning/error messages without identification :-(14:10
sijikhanx, get familiar with basic unix/linux commands 14:11
sijithis will make your " Playing with Linux" more easier  14:12
sijiany help pls 14:14
sijiOr any one can provide me ads786.ko (touchscreen module)  for 2.6.38.8-omap 14:15
apwsiji, if you have ARM specific questions you may get quicker answers on #ubuntu-arm, the peeps who mostly have the h/w hang out there14:16
sijiapw, :)14:16
ogra_apw, lol14:16
ogra_apw, i have no clue how to only build modules in subdirs of the kernel tree14:17
sijihe he14:17
ogra_never had to 14:17
ohsixmake M= isn't it?14:17
ohsixor make module.ko14:17
sijiohsix, means14:17
ohsixthere's "make help" too14:17
ogra_so i'm surely a bad candidate to support that :)14:17
sijiok14:18
siji(ohsix, looking into make help )14:19
apwbuilding only in a subdir, hmmm, that is in the docs somewhere something like fakeroot debian/rules prepare-<flavour>; make O=debian/build/build-<flavour> <directory name>14:19
apwor <directory>/<module>.ko at the end14:19
apwnot that i ever do it, i normally just build the lot14:19
sijiapw, ya it worked for me 14:19
sijibut it hasnt built whole kernel modules14:20
sijiI have defined he directory name 14:20
siji./touchscreen which is having more than 10 driver modules, but it built only three 14:21
sijiAnd unfortunately my module was not there in those three ;(14:21
apwwell it will only build the ones which are turned on in your config too14:22
sijiAm not a expert in kernel , so i feel something wrong in the .conf or some where else14:22
sijiapw, understood14:22
sijiI hve tried many times by configuring it 14:22
apwif you want foo.ko built there will be something like obj-$(CONFIG_FOO): foo.ko in the Makefile, which tells you the CONFIG to look for in your .config14:22
sijiapw, ok 14:23
sijilet me have a look into it14:23
ogra_apw, well, the initial issue that drove siji to try the recompile was that the module shipped in the package breaqks with undefined symbols on loading14:23
ogra_apw, which i find extremely weird for a module built in the same package14:24
sijiogra_, apw , then by building the kernel from the same source(ubuntu repository)  again will make any sense for me ?14:25
apwogra_, odd indeed but not impossible i think14:25
apwif the dependancies in the Kconfig are broken14:25
sijiapw, broken locally in my setup only ?14:27
bjfthe kteam-bugs is 831M14:27
bjf-EWRONGCHAN14:27
apwsiji, likely generally if they don't work with the ones in the archive14:28
apwis there a bug or error messge i can look at14:28
sijiapw, ok14:28
sijithe bug is with ads7846 driver module (Touchscreen - used TSC2046 in the Expansion board,and it connect with DM3730 by SPI port) 14:29
sijiogra_, sorry hasnt got time to report the bug report . apologise ..14:30
ogra_dont apologize, file it instead :P14:31
siji:)14:32
tgardnerogasawara, am working on jjohansen's AA 13 patch set.14:34
ogasawaraogasawara: ack, I'm lookin at ike's14:35
tgardnercool14:35
=== ericm|ubuntu is now known as ericm-Zzz
=== ericm_ is now known as ericm-Zzzz
smbmorning14:43
sijiogra_, done :)14:55
sijigood learning for me :) 14:56
ogra_siji, tell apw the bug number14:57
sijio14:57
sijiok14:57
sijiapw, Bug #824589 14:57
ubot2Launchpad bug 824589 in ubuntu "inproper Touch Screen Dirver module(for arm beagleboard) for TSC2046 in the Expansion board,and it connect with DM3730 by SPI port ." [Undecided,New] https://launchpad.net/bugs/82458914:57
sijiyes the same 14:58
apwogra_, do you have a pointer to that possible arm smb issue15:17
ogra_apw, omap3 has no SMP :)15:18
smbogra_, omap415:18
ogra_err, you said smb :P15:19
smbThough I would probably prefer not being called an issue... :)15:19
ogra_sorry, running a meeting atm15:19
smbogra_, He was trying to say smp15:19
apwjjohansen, about ?  i've replied to your TOCTOU patches, i think there is an issue with the Maverick one15:32
smbapw, He is here though I need to ask15:32
jjohansenapw: oh? that is possible15:32
apwjjohansen, and i am wondering if you are doing backports for lucid and hardy or not15:33
jjohansenapw: ah yeah, sorry /me couldn't find those last night and hasn't gotten to it this morning yet15:34
apwjjohansen, ok will wait on those rather than doing them15:39
jjohansenapw: okay, I'll take a look at the Maverick one again too15:40
apwjjohansen, my review comments are on the mailing list15:40
jjohansenapw: thanks15:41
ogra_smb, apw, meeting done, so what was the issue 15:46
smbogra_, Question was whether you got a pointer to the bug concerning poor performance in smp mode on the panda15:47
ogra_the bug number you mean ? 15:47
smbyep15:47
ogra_i have no further pointers than what are noted in the bug15:47
ogra_one sec15:48
ogra_bug 70924515:48
ubot2Launchpad bug 709245 in linux-ti-omap4 "ARM SMP scheduler performance bug" [High,Confirmed] https://launchpad.net/bugs/70924515:48
smbogra_, K, thanks15:48
smbCurrently upgrading the board here15:49
tgardnerpgraner, looks like the ISO builder ran last night? 16:00
tgardnerbummer, still getting apt-get trap divide error16:04
cjwatsondoes anyone here who is (a) in ubuntu-core-dev and (b) not in techboard or ubuntu-release have a bug task they'd like to nominate for a stable release?16:33
cjwatsonright now you can just do it; I want to make a change to the stable release ownership in LP and would like to make sure that doing so does not break it this16:33
cjwatsonbut I can't test it myself since I'm overprivileged16:34
apwtgardner, ^^ is the only one i think who fits that criteria16:34
tgardnercjwatson, hmm, that might be me.16:34
cjwatsonif you have a suitable task to nominate, then yeah, you have the level of privileges I'm looking for16:35
apwtgardner, you can safely nominate any of our cves to like karmic and the tools will slam them invalid later16:35
tgardnercjwatson, are you wanting to mess with our ability to make nominations? its already difficult in that very few of us _can_ do it.16:36
apws/cves/cve bugs/16:36
cjwatsontgardner: I want to make sure I'm *not* messing with your ability to do so16:36
tgardnercjwatson, ah16:36
cjwatsonactually, here16:36
cjwatsontgardner: https://bugs.launchpad.net/ubuntu/+source/grub2/+bug/752694 - can you see an "approve/decline" thing there?  (don't click it yet)16:36
ubot2Ubuntu bug 752694 in grub2 "Grub2 installs on the wrong device if in a RAID config" [High,Confirmed]16:36
tgardnercjwatson, yes16:37
apwtgardner, http://people.canonical.com/~kernel/reports/kernel-cves.html any of those bugs can be safely nominated to anything, and we'll cope16:37
cjwatsontgardner: OK, reload - can you still see it, and if you hit approve, does it work?16:37
cjwatson(I've just changed natty's owner from ubuntu-core-dev to ubuntu-release)16:38
tgardnercjwatson, it appears to have worked16:38
cjwatsonexcellent, thanks!16:38
cjwatsonI'll go and change the other stable releases now then.  Please let me know if you notice regressions in your ability to nominate things16:39
tgardnercjwatson, will do.16:39
tgardnerapw, since FF approaches, perhaps its time to get an empty oneiric LBM package in the archive before it gets difficult.16:40
apwi think ff offically is in 15 mins, but lbm has always been treated at part of the kernel16:42
apwbut yes i think its time16:43
cjwatson(BTW, the fix for bug 451390 ought to have improved the nomination situation for you guys)16:43
ubot2Launchpad bug 451390 in launchpad "limited upload rights no longer give series nomination accept/decline rights" [Critical,Fix released] https://launchpad.net/bugs/45139016:43
apwcjwatson, ohhh nice ... musdt find a way to test that16:44
apwtgardner, i'll put the LBM on my todo for tommorrow16:51
tgardnerapw, ack16:51
apwtgardner, you will be pleased to know i have spent several hours un-fooking my email so i have some hope of keeping up on it16:52
tgardnerapw, be sure to check the repo in your morning in case I manage to get to it yet today.16:52
apwtgardner, ack16:52
tgardnerapw, I'm pretty ruthless about keeping my inbox down to just a couple of emails by EOD16:53
apwyep and working on a similar scheme but it needs for my filtering to be sane and work, which has been the big battle16:54
apwi think i have just about won16:54
* tgardner likes procmail16:54
tgardnerogasawara, does '(drop after 3.0)' make sense for a clean cherry-pick ?16:59
apwthey should drop themselves on rebase anyhow16:59
ogasawaratgardner: sorta unneeded I guess as apw says they'll drop anyways17:00
tgardnerapw, ogasawara: you mean for the P series kernel, or for the once more that might happen for oneiric ?17:00
apw(for P i am assuming)17:01
ogasawaratgardner: they should drop for P, possibly for O if they hit stable and I rebase17:01
tgardnerok, I'm just being OCD17:01
ogasawaratgardner: I assume you're referring to ike's patches17:01
tgardnerogasawara, yep17:02
ogasawaratgardner: if it makes you feel better, I'm indifferent so if you want to fix up and push over the top, feel free :)17:03
tgardnerogasawara, I'll get over it. some good drugs will help.17:03
* smb wonders whether there some involved already...17:05
apwtgardner, you got any rtl8192cu's ? if so do they work ?17:19
tgardnerapw, I can't hear you....17:19
apwdamn17:20
tgardnerapw, everything I jave is Intel or Atheros17:20
tgardnerhave*17:20
smbapw, think I got one17:21
smbapw, Is that one of your new micro dongles17:22
apwsmb, i got one of those micro 80211.n things ... yeah17:22
apwseems to be recognised but not auth ... bah17:22
smbthink I got a similar one now17:22
smbit worked17:22
smbbut in natty you needed cw-2.6.3917:22
apwdoesn't seem to work in oeniric, damn17:25
* tgardner unleashes his inner OCD on ogasawara17:29
ogasawaraheh, what now?17:30
tgardnerk-team email17:30
apwsmb, did your fixes for LBM versioning get out ?17:32
smbapw, I did versioning?17:42
smbThe last thing I remember doing was that failure to package the right modules17:44
smbThough that was limited to lucid I think17:44
hggdhsconklin, bjf, herton: bug 818175 done, marked qa-testing-passed17:44
ubot2Launchpad bug 818175 in linux "linux: 2.6.38-11.48 -proposed tracker" [Medium,In progress] https://launchpad.net/bugs/81817517:44
sconklinhggdh: thank you!17:44
apwsmb, limited to lucid ok17:45
khanxhi, i downloaded the latest kernel. i have no clue where to start examining it lol17:46
khanxisnt there something like a schema17:47
=== sarahsharp1 is now known as sarahsharp
jjohansenkhanx: no17:49
jjohansenkhanx: the best place to start is Documentation/ and kernelnewbies.org17:50
khanxthanks for the tip =)17:55
apwthe natty update on this t30 has fecked it18:00
* tgardner --> lunch18:00
* smb wonders where to test build ti-omap4 kernels...18:14
tgardnersmb, gomeisa or tangerine ?18:33
smbtgardner, Any would be ok, but there does not seem to be a oneiric-armel schroot on either of them18:34
tgardnersmb, I've been using the cross compiler since the armel schroot doesn't work18:34
smbtgardner, Ah, ok. Will do the same then18:35
tgardnersmb, echo "debuild -B -edo_tools=false -us -uc"|schroot -c oneiric-amd6418:35
smbthanks18:35
tgardnersmb, opps, forgot arch: echo "debuild -B -edo_tools=false -us -uc -aarmel"|schroot -c oneiric-amd6418:35
smbHeh, ok was thinking that would need to be somewhere18:36
tgardnersmb, besides, the cross compiler method is way faster18:36
* ogasawara shakes fist at tgardner's contagious OCD and updates ike's patches18:37
smbtgardner, Completely agreed. Was not sure the cross compiles is installed or not18:37
* tgardner enjoys his infectious OCD tendencies18:38
ohsixcan you direct them at seeing why i get 3 backlight adjustments for each hard key press :>18:38
mdeslaurherton: ok, I can reliably reproduce the issue now19:20
mdeslaurherton: bug updated19:20
hertonmdeslaur: cool, will give you another test kernel shortly19:22
mdeslaurherton: great, thanks19:22
hertonmdeslaur: done, https://bugs.launchpad.net/ubuntu/+source/linux/+bug/814325/comments/2320:01
ubot2Ubuntu bug 814325 in linux "fuzzy and corrupted display with update in natty-proposed" [High,Triaged]20:01
mdeslaurherton: trying now, thanks20:03
mdeslaurherton: sorry, r4 has the regression :(20:09
hertonmdeslaur: ok, seems only way is reverting that patch for now20:10
hggdhsconklin: just making sure, I am -- right now -- up-to-date on SRUs, correct?20:19
sconklinhggdh: hold on while I double check. I think so20:20
sconklinhggdh: yes, you are caught up :-)20:21
hggdh\o/20:28
hggdhthank you, sir20:28
* herton -> eod20:39
* ogasawara bails for a bit20:55
=== Quintasan_ is now known as Quintasan
=== yofel_ is now known as yofel

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