Kernel crash

General support questions
timcenty
Posts: 8
Joined: 2018/04/10 16:25:21

Kernel crash

Postby timcenty » 2018/04/25 18:09:52

Hello,

We had a few kvm hypervisors crashed at the same time while create new VMs on them. The kernel crash dump shows the similar trace as mentioned at

Code: Select all

https://bugs.centos.org/view.php?id=14426


CentOS Linux release 7.2.1511 (Core)
3.10.0-327.18.2.el7.x86_64

Does anyone if this is a bug and being worked on to provide a fix?

Thanks much

User avatar
TrevorH
Forum Moderator
Posts: 22591
Joined: 2009/09/24 10:40:56
Location: Brighton, UK

Re: Kernel crash

Postby TrevorH » 2018/04/25 18:43:30

If it is a bug then it will have been fixed in one of the kernels included in 7.4 or 7.4 or 7.5.

What you're running is 7.2 which is from Nov 2015 and is no longer supported. You're not even running the latest 7.2 kernel. Run yum update to get up to date, currently 7.4 but 7.5 will be hitting the CR repo any day now.

CentOS only supports the latest point release. Once a new one comes out, the previous one no longer gets any updates and is moved to vault.centos.org to die.

From the looks of that bug report, I suspect you've filled up all of /dev/shm. Make it bigger or reduce your usage of it.
CentOS 5 died in March 2017 - migrate NOW!
Full time Geek, part time moderator. Use the FAQ Luke

timcenty
Posts: 8
Joined: 2018/04/10 16:25:21

Re: Kernel crash

Postby timcenty » 2018/04/25 19:30:29

Thank you. Assuming the bug has been fixed in later version, is there way to confirm that? I'm looking for the release notes but haven't found a reference of it yet. Is there any other way to confirm?

I did see sort of similar if not exact trace appearing on RHEL7.4 which is being looked at.

Thanks

User avatar
TrevorH
Forum Moderator
Posts: 22591
Joined: 2009/09/24 10:40:56
Location: Brighton, UK

Re: Kernel crash

Postby TrevorH » 2018/04/25 19:59:04

You can read the kernel rpm changelog by running rpm -q --changelog kernel-3.10.0-693.21.1.el7.x86_64 | less but good luck with that as it's one line per change and there are about 30,000 of them between point releases...
CentOS 5 died in March 2017 - migrate NOW!
Full time Geek, part time moderator. Use the FAQ Luke