Panic With EL7 KVM Guest On EL6 Host On AMD Server With Latest Kernel
Hi,
I have AMD servers running CentOS 6.10 as KVM host and on it guests running CentOS 7.5.
Since the latest kernel update on CentOS 6.10, kernel-2.6.32-754.2.1.el6.x86_64, I can’t boot the CentOS 7.5 guests with kernel-3.10.0-862.6.3.el7.x86_64 anymore.
Reverting CentOS 6.10 host to kernel-2.6.32-754.el6.x86_64 fixes the problem.
Screendump of the panic is attached, not very helpful I guess.
The CPU models where I could test it are:
cpu family : 15
model : 65
model name : Dual-Core AMD Opteron(tm) Processor 2218
stepping : 3
cpu family : 16
model : 6
model name : AMD Athlon(tm) II Neo N36L Dual-Core Processor stepping : 3
Didn’t test on newer CPU family yet.
I’m wondering, does someone see the same issue? Does it not happen on Intel CPUs?
Thanks for any insight.
Regards, Simon
5 thoughts on - Panic With EL7 KVM Guest On EL6 Host On AMD Server With Latest Kernel
I didn’t know attachments are stripped by the list.
Here is the bugreport:
https://bugs.CentOS.org/view.php?id067
My feeling is that the recent Intel fixes/workarounds have broken it here for AMD systems :(
Regards, Simon
I had to set my CPU type to opteron_g3 instead of opteron_g5 for some machines on an AMD server.
This was the bug I hit … not your scenario .. but who knows:
https://bugzilla.redhat.com/show_bug.cgi?id=1586278
Looks like your scenario was really quite different.
BTW, I’ve just tested with kernel-3.10.0-862.9.1.el7.x86_64 on the CentOS
7 guest and it still crashes the same way.
Regards, Simon
I have a CentOS 7.5 guest running under VMware 6. Updated to 3.10.0-862.6.3 and am now experiencing kernel panics on boot as well. The underlying CPU is a Xeon E5649.