| kashyap | Hi, folks. Is "ubuntu-kernel" the right package to tag for a potential kernel issue? This was found in a CI of upstream OpenStack - https://bugs.launchpad.net/ubuntu/+source/kernel-package/+bug/2018612 | 09:39 |
|---|---|---|
| -ubottu:#ubuntu-kernel- Launchpad bug 2018612 in OpenStack Compute (nova) "Guest kernel crashes with GPF on volume attach" [Undecided, Triaged] | 09:39 | |
| kashyap | (There's a rough reproducer in the description. And I've added some environment details) | 09:43 |
| === ben__ is now known as ben_r | ||
| juergh | kashyap: 5.3.0-26-generic is old and unsupported. | 11:48 |
| juergh | can you upgrade that machine? | 11:49 |
| juergh | Oh it's a guest kernel. Sorry, you need to upgrade your guest image. | 11:52 |
| kashyap | juergh: Oh, is it? I was told that kernel (5.3.0-26-generic) from CirrOS 0.5.2 is part of Ubuntu LTS | 11:52 |
| kashyap | juergh: But yeah; I think it might be possible to use a newer CirrOS image 0.6.1 (which has 5.15.0-48-generic) | 11:52 |
| kashyap | juergh: Yeah, it's the guest kernel indeed. | 11:53 |
| kashyap | juergh: Right; the current guest image is 0.5.2. I made a quick comparison here: https://kashyapc.fedorapeople.org/CirrOS_segfault/CirrOS-0.5.2-vs-0.6.1-kernel.txt | 11:53 |
| juergh | Presumable 5.3 was the HWE at the time the image was cut but it's no longer supported. It's 5.4 now, same as focal. | 11:53 |
| kashyap | Ah-ha | 11:53 |
| kashyap | Why do you say "Presumable"? :-) Isn't it confirmed that it is 5.3 in this case? | 11:54 |
| kashyap | Or maybe you're saying was "5.3 was presumably the HWE at the time of image cut" | 11:55 |
| juergh | hrm. the image was built in 2021 so I'm not sure why it pulled in a 5.3 kernel. | 11:56 |
| juergh | would be good to understand how that image is built | 11:56 |
| juergh | even though it's not Ubuntu and you're on your own ;-) | 11:57 |
| kashyap | juergh: I think it's just plain vanilla 0.5.1 - https://download.cirros-cloud.net/0.5.1/cirros-0.5.1-x86_64-disk.img | 11:57 |
| kashyap | juergh: If you have time, mind adding some of your observations on the bug? | 11:59 |
| juergh | oh yes. 0.5.1 was built in march 2020, before focal release which can explain the 5.3 kernel. | 12:01 |
| juergh | 0.5.2 didn't upgrade the kernel apparently | 12:01 |
| juergh | yes, will update the bug and mark it invalid... | 12:01 |
| juergh | btw, for future bug reports, the package to report kernel bugs for is linux | 12:02 |
| kashyap | juergh: Ah, so the CirrOS 0.5.2 image should update the kernel. Thanks | 12:09 |
| kashyap | juergh: Also, noted: the package name. "Qlinux" is rather cryptic pacakge name; it's impossible to discover it from the list of possible options when you type "kernel" in the launchpad | 12:10 |
| juergh | yes if that is still a supported image it should be updated to include a supported kernel | 12:10 |
| juergh | well. if you open a bug from an Ubuntu system it is smart. you're running something (cirros) that is not really Ubuntu... | 12:11 |
| juergh | but yes, LP is not easy to navigate. | 12:11 |
| kashyap | juergh: I'm running neither; I'm on Fedora. And these bugs occur in a CI system, so no way file "a bug from that system". I'm just retroactively "piecing together the scene from the explosion" | 12:12 |
| kashyap | (Maybe there is some ABRT-style reporting system (that Fedora uses) on Ubuntu too, to auto-report certain kinds of crashes. Haven't looked into it) | 12:13 |
| kashyap | juergh: Thank you for looking. | 12:14 |
| juergh | kashyap: the bug should really be filed against cirros and not ubuntu: https://github.com/cirros-dev/cirros/issues | 12:17 |
| kashyap | juergh: Okay ... me goes to file. So the issue in short is 0.5.2 image should update to LTS kernel 5.4 (from Focal) -- yeah? | 12:18 |
| kashyap | Any other detail to add? | 12:18 |
| juergh | bug then again, that's only the build recipes. who build/owns the openstack cirros images? | 12:18 |
| kashyap | juergh: I don't think the CI infra builds custom CirrOS images; just pull 'em from CirrOS upstream. (But I'll double-check) | 12:19 |
| juergh | kashyap: oh they do build images from github. ok, then ask them to update 0.5 and pull in updated packages. | 12:22 |
| kashyap | juergh: "they" == CirrOS? | 12:22 |
| kashyap | Or OpenStack CI? | 12:22 |
| juergh | kashyap: cirros-dev on github | 12:22 |
| kashyap | Ah, right; also how do they know what _other_ packages to update? | 12:23 |
| kashyap | You say "pull in updated packages" -- how do they discover it? (I know, it's "not my problem"; but I'm curious :)) | 12:23 |
| kashyap | Maybe you just mean "pull in kernel and whatever dependent packages" | 12:24 |
| kashyap | Thanks for your comment in the LP bug! | 12:24 |
| juergh | kashyap: don't know how they build that image but I assume they point at an Ubuntu mirror so when they rebuild the image they should get latest package versions. they should periodically refresh the images anyways... | 12:25 |
| kashyap | Noted. They do have a 0.6.1 version image, though (as noted earlier). | 12:26 |
| * kashyap goes to file the issue for cirros-0.5.2. I'll quote your comment verbatim from the LP bug, with context; hope that's fine. | 12:26 | |
| kashyap | juergh: If you got the full 5.4 kernel version of Focal handy, can you please post it here? | 12:27 |
| juergh | kashyap: https://launchpad.net/ubuntu/+source/linux | 12:29 |
| juergh | all the versions of the different series | 12:29 |
| kashyap | juergh: Very handy list; thank you. | 12:31 |
| kashyap | juergh: Hope that reads fine to you: https://github.com/cirros-dev/cirros/issues/102 | 12:47 |
| -ubottu:#ubuntu-kernel- Issue 102 in cirros-dev/cirros "Update CirrOS 0.5.2 kernel image to a supported version (kernel-5.4; from Focal)" [Open] | 12:47 | |
| === halvors1 is now known as halvors | ||
| lotuspsychje | juergh: seems like Bug #2018128 package got back to linux | 18:10 |
| -ubottu:#ubuntu-kernel- Bug 2018128 in linux (Ubuntu) "Apport does not collect all logs when the package is HWE kernel" [Undecided, Confirmed] https://launchpad.net/bugs/2018128 | 18:10 | |
| === NotEickmeyer is now known as Eickmeyer | ||
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