[CentOS] A bit perturbing

Ljubomir Ljubojevic office at plnet.rs
Fri Jul 15 21:41:57 UTC 2011

m.roth at 5-cent.us wrote:
> Ljubomir Ljubojevic wrote:
>> m.roth at 5-cent.us wrote:
>>> I'm doing an update on a machine that does have VMs running on it, and I
>>> see a number of complaints to the effect of
>>> /lib/modules/2.6.18-194.32.1.el5/weak-updates/kmod-kvm/kvm-intel.ko
>>> needs unknown symbol kvm_vcpu_init
>>> /lib/modules/2.6.18-194.32.1.el5/weak-updates/kmod-kvm/kvm-intel.ko
>>> needs unknown symbol kvm_mmu_invlpg
>>> And there are a lot of them (more than I can scroll back to. Has anyone
>>> else seen this?
>> weak-update means it is inherited kernel module, possibly from newer
>> kernel then what you are running (You are on 5.5 kernel?).
> Nope - 5.6, and just updated from 2.6.18-238.9.1, I think, to 12.1
>> Relevant info: https://bugzilla.redhat.com/show_bug.cgi?id=509361
> I'll have to look at that Monday. Thanks!

Oh, then you are most likely OK.
Then that should be just warning that that old kernel (you have as a 
backup) does not like that kernel module.  It shows for example when I 
recompile VirtualBox modules.

Weak-update means that module is installed in the folder for one kernel 
but is linked for all other on the system. More or less like that.


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