/srv/irclogs.ubuntu.com/2012/03/15/#ubuntu-kernel.txt

=== tsimpson_ is now known as tsimpson
smbmorning08:18
ckingmorning smb08:28
ppisaticool, last dist-upgrade broke empathy :(09:04
smbppisati, Isn't that the "normal" behavior?09:08
ppisatibrb09:38
* apw reboots for 37M of new shiney bits09:58
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alexbligh1is it intended to have a precise-backports kernel for lucid, the same way as we have a oneiric-backports and a natty=backports?11:10
* ppisati -> out for lunch12:04
apwalexbligh1, no, we are not intending to make that combination12:28
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smbherton, You reckon it is ok to also apply the changes for the cve to maverick master-next, even with a chance that it won't get released in case there is nothing urgent? I sort of completely managed to not read the announcement carefully enough that it should slowly go out of updates.13:34
smbOtherwise I'd go ahead and apply them (hopefully not clashing with tgardner )13:35
tgardnersmb, I've not started, so you've got the ball13:36
hertonsmb, hmm, may be we should wait, unless the CVE is critical enough to have a release13:36
smbtgardner, Okay will do13:36
smbherton, It is maybe in between13:36
smbNot really critical but on the other hand allows a normal user to crash a kvm guest (32bit)13:36
smbherton, But given it is unclear, I'll leave out M for now13:38
hertonsmb, ok, we have to see, if security thinks it should be released, I think bjf mentioned jj should do a review of CVEs that still are pending and should go13:40
smbherton, Yes, he did. Ok then, pushing all but M13:41
* apw is unclear why we would not apply the thing and include it _if_ there is another upload13:41
apwits most likely to get lost if you don't apply it, and if we have it, and we do another upload, i cannot see why we would not include it13:42
apwthe review with jj is about which ones we can not bother with the effort to do them, if its no effort or already done ...13:42
apwplus you can always rebase them out of existance13:43
hertonI don't see any problem as well in applying too, if no one bothers that may be what is in master-next will not be released13:43
hertonyes, it could be rebased/removed later13:44
smbherton, apw Ok, so that means I should apply it and it can be decided later to drop it? (just wanting to confirm,)13:57
hertonsmb, yes, just apply it, in the worst case we can remove it from master-next later13:58
smballrighty then13:58
cba123I'm getting random freezes, on 11.10 (3.0.x kernel).  In my logs I recall seeing "rcu_sched_state detected stall on CPU 0" which I've seen other people have too.  They say they went to 3.2.x and the issue seems to have cleared.  Can I go to the Precise repo for the kernel and go back, or is there an Oneric backport kernel repo I don't see?14:06
apwcba123, those may well show up in syslog so you might look there.  there is no official 3.2 kernels for oneiric no14:12
cba123apw, Yes, so I'd imagine that the rcu is the effect not the cause?14:14
apwyep, its just telling you something got stuck somewhere... though the stack trace can often help14:14
apwyou might be able to get a stack trace with sysrq when it does hang14:15
cba123What do I use for a stack trace, or sysrq?14:16
desrtgood morning14:18
desrtwho is the curator of all things drm?14:18
* desrt is testing http://lists.freedesktop.org/archives/intel-gfx/2012-March/015486.html14:21
=== elmo_ is now known as elmo
bullgard4'man apt-cache': "blue lines are pre-depends, green lines are conflicts." How are »pre-depends« defined?14:49
lamontif I throw a 3.2 kernel on lucid, how much breaks?15:01
tgardnerlamont, shuold work15:02
tgardnerlamont, we've got 3.0 kernels on Lucid15:02
lamontwell, I know there are userspace things that git a tad bit annoyed at != 2.6.X, no?15:02
lamontor is that mostly just build time issues15:03
lamont?15:03
tgardnerlamont, mostly build time issues, though IIRC there was a user space package that complained.  Maybe DKMS ?15:03
lamontcool.  I may try that step, or I may just shove the box into precise15:04
smbThough wasn't the problem more of a "who stole the third digit"?15:04
apwtgardner, are you or leann handling the upload the end of this week ?15:04
tgardnerapw, leann said whe'd be around tomorrow long enough to do it.15:04
lamontMar 15 08:53:21 wfg-gw kernel: [244607.623349] nf_ct_sip: dropping packetIN=eth0 OUT= MAC=00:0e:0c:5c:1c:78:00:0c:85:be:5a:85:08:00 SRC=192.168.133.192 DST=192.168.133.1 LEN=591 TOS=0x10 PREC=0x40 TTL=64 ID=57781 PROTO=UDP SPT=51374 DPT=5060 LEN=571 15:05
lamontmostly, I want to stop having logs full of that15:05
tgardnerlamont, ah, you're still having that issue.15:05
lamont72MB/day of that issue15:05
lamont2.6.32-39-generic-pae15:05
tgardnerwell, 3.2 is worth a try15:06
apwlamont, i think ps will start moaning a bit about the kernel version15:09
apwlamont, mostly it was package building which was a bit suspect in that combination15:09
lamontright.  upgrade it is then15:09
apwlamont, builds with checks for 2.6.x and similar in them15:10
apwthere is a personality flag, which allows the kernel to report itself as 2.6.39+N i think it is15:10
lamontyeah15:10
lamontso lets say I have / on /dev/md2 (swraid1), and I want to migrate to having it on an LVM volume on the same thing... Can I: remove one drive from the array, mdadm create -f on it, pvinit it, pvcreate, vgcreate, lvcreate, mount, sync, reboot onto the half-there md3, and then mdadm --add the other drive and be all shiny and happy?  or is that crazytalk?15:13
lamont(yes, backup first, because I care)15:13
lamonts/sync/rsync/15:13
tgardnerlamont, AFAIK each of those steps ought to work, though I think you'll be pioneering....15:14
lamonttgardner: heh15:16
lamontmy biggest concern is making sure that the *^)*^( swraid doesn't decide that it wants to readd the second drive backinto the original raid and trash all my work15:16
lamontbut if it's already a new array, there's little risk of that15:17
lamontif lvm is installed, and root is not on lvm, does lvm get all its pretty hooks into the initrd still?15:17
lamontbecause not having lvm in the initrd on that reboot would suck15:17
tgardnerlamont, that I can't tell you. I've mostly used mdadm.15:17
lamontnp15:18
smblamont, I think it is in there when it is installed15:18
lamontjust one more thing to verify before the reboot15:18
lamontsmb: that would be suitable for my interests15:18
bullgard4[solved]15:18
smblamont, Actually my local machine is done that way. So you should be ok. (after all those test installs I cannot remember reliably what I have done where)15:26
=== rbtz is now known as SaveTheRbtz
desrtSo I filed https://bugs.launchpad.net/ubuntu/+source/linux/+bug/956046 and built a kernel package with the patch.  It fixes the issue.16:01
ubot2`Launchpad bug 956046 in linux "intel driver fails to use dual-link LVDS if lid is down at boot" [Undecided,Confirmed]16:01
desrtnot sure if it causes other issues, of course.... :)16:01
ppisatiGrueMaster: 3.2.10 (that's in master-next) fixes the serial problem we have with omap316:32
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GrueMasterCool, thanks.16:38
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hrwhi team17:33
hrwcan someone take a look at http://pastebin.com/LwtJ6jzm patch to kernel packaging? first hunk disables build of tools for cross compilation (we do not have all libraries multiarched for it yet), second is irrevelant now but will be needed when we will be able to cross build tools17:34
* ppisati -> out17:48
tgardnerhrw, email it on kernel-team@lists.ubuntu.com where it'll likely get a bit more attention.17:54
=== tgardner is now known as tgardner-lunch
LaibschCan somebody please accept the lucid nomination for the critical bug 745836?  This has caused data corruption and frequent crashes in essential pieces of software like OOo.org for more than a year now.  Patch is available and landed in natty and beyond.18:21
ubot2`Launchpad bug 745836 in linux "encrypted swap corrupts application stack/heap [was: soffice.bin SIGSEGV cppu::throwException()]" [High,Confirmed] https://launchpad.net/bugs/74583618:21
tyhicksThe bug Laibsch is talking about was actually an eCryptfs bug, despite the confusing bug title.18:28
tyhicksIt was a pretty simple patch, but I don't know how it applies to a kernel as old as Lucid's18:29
ohsixif it's a known bug, patch and SRU shouldn't be hard18:29
Laibschohsix: do you have upload rights to the kernel?  My experiences with "patch served on a platter" for even highly important bugs has been less than good.18:33
ohsixeh, you mean important by your own criteria; or your own SRU requests?18:34
Laibschhighly important as in "mass-market netbook without wifi support for more than half a year" even though upstream kernel had a patch after two days18:35
Laibschno amount of bugging and begging got anyone's behind moving :-(18:35
ohsixwas there an SRU18:36
ohsixor was it discovered before a release18:36
Laibschthat was for lucid at the time it was in development18:36
LaibschJanuary 201018:36
Laibschohsix: will you also answer my question now: do you have commit rights?18:37
ohsixthat question isn't relevant, but no; what would it even mean to have "commit rights", to the bzr on launchpad? people don't just shove things in there to get them into packages ...]18:38
tyhicksLaibsch: To be fair to the kernel team, this one was extremely hard to debug. IIRC, it wasn't known that it was an eCryptfs issue for quite some time and then once that was determined and I was notified, it took me quite a while to debug it and fix it upstream.18:39
tyhicksReading back through the report, it seems that I stumbled upon the fix after removing some crufty code and noticed that the problem went away. That led me to the actual cause.18:40
Laibschohsix: if you consider commit rights irrelevant I'm not even sure there's a point to talk.  That question is so obviously relevant, there's no need to discuss.  tyhicks would fix the issue if he had the powers, but he doesn't.18:41
ckingtyhicks, so this just needs backporting to lucid and testing then? I can look at that one18:41
ohsixheh why is there still so many random encrypt-x things in use when you can use dm18:41
tyhickscking: It sounds like it18:42
ohsixLaibsch: there's a process, it doesn't sound like you know it; that might be a component of why something so important seemed ignored18:42
Laibschtyhicks: I remember the troubles in pinpointing that problem.  And I'm not faulting anyone for 745836.  I'm just afraid that lucid might experience a repeat of the sluggish, non-response I've seen in other problems earlier.18:42
ckingtyhicks, OK - I will slap it on my todo list then18:42
tyhickscking: A couple helpful links...18:42
ohsixjust because cking was here this time ... !18:42
tyhicksA description of the problem: https://bugs.launchpad.net/ubuntu/+source/libreoffice/+bug/745836/comments/8618:42
ubot2`Launchpad bug 745836 in linux "encrypted swap corrupts application stack/heap [was: soffice.bin SIGSEGV cppu::throwException()]" [High,Confirmed]18:42
ckingnice, I can even write a testcase and add it to the ecryptfs tests18:43
tyhickscking: A simple patch which should fix it in old releases if you don't want to backport the upstream changes that luckily solved the problem: https://bugs.launchpad.net/ubuntu/+source/libreoffice/+bug/745836/comments/8718:43
* tyhicks remembers that he needs to merge cking's latest test suite changes sometime this week18:44
ckingOK - I will see if I can get around to this tomorrow or monday18:44
ohsixcking: but do you have commit rights?!?!!111118:44
ckingI can do the SRU work, do the testing etc, I've been doing ecryptfs SRU's over the past few weeks, so it's my bread-n-butter18:45
* cking will give it the love it requires18:46
ohsixnice, but i can't make the joke i was going to had you said yes18:46
ohsixwell, thanks for speaking up; maybe i was explaining things poorly but it didn't seem to be getting any traction18:46
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ckingglad you mentioned it, somehow I missed that one, and I've looked a a bunch of these over the past few weeks18:47
ckingtyhicks, is it OK just to use the simple patch in comment 87 rather than backport the other two patches?18:48
* cking being lazy18:48
tyhickscking: Let me take another look at those two patches. My mind is going almost completely blank on this bug...18:49
ohsixwho would have thought where you store your pages would be important18:49
tyhickscking: Yes, it sounds like I was pretty confident that the simplified patch in comment 87 was the real fix and the upstream commits just covered everything up. I _know_ that I wouldn't have attached that patch without testing.18:52
ckingsure - thanks for checking18:53
lamonttgardner-lunch: missing step: update mdadm.conf to reflect the new array, so that the vg is found18:56
lamont\o/18:56
tgardner-lunchlamont, yeah, I always have to go to the wikipedia page for mdadm to remember that.18:57
=== tgardner-lunch is now known as tgardner
lamontyeah, nothing quite like not finding the root partition19:00
hrwtgardner: sent19:26
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* tgardner -> EOD20:27
_rubenEOD .. that's the dutch abrev for the bomb squad .. guess he hadda run ;)20:34
unwiredHi, just found a bug in kernel 3.0.0-17.30 from onieric-proposed, but I'm not sure where to report it...21:03
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