Applying Spectre/Meltdown on CentOS7 3.10.0-514.21.2.el7
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  1. Steve Yarmie
  2. Friday, 09 February 2018
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Hi guys,
I would like to test the Spectre/Meltdown patch deployment via kcare.
I have successfully deployed all available patches against kernel:

# kcare-uname -a
Linux hostname 3.10.0-693.17.1.el7 #1 SMP Tue Jun 20 12:24:47 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux
# uname -a
Linux hostname 3.10.0-514.21.2.el7.x86_64 #1 SMP Tue Jun 20 12:24:47 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux

Then according to the CloudLinux blog posting:
To deploy them: edit /etc/sysconfig/kcare/kcare.conf
Add: PREFIX=test
Run: kcarectl --update
When I add PREFIX=test kcarectl --update returns:
# kcarectl --update
Unknown Kernel (CentOS Linux 3.10.0-514.21.2.el7.x86_64)

(if I remove the PREFIX setting I get expected "Kernel is safe" message and can see the many patches already aplied via #kcarectl --patch-info )

This is the blog entry I'm following:

Are there any updates to applying the Meltdown/Spectre patches?
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  1. 09.02.2018 07:02:41
  2. # 1
Posts: 187
Joined: 31.01.2017
Yes, this is the post where the news on Meltdown/Spectre patching are being added.
On error when using test feed in KC - please, contact our tech support by submitting a ticket at (KernelCare department)
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