8.12. Disabling kpatch.service

Procedure

1. Verify kpatch.service is enabled.

   # systemctl is-enabled kpatch.service
   enabled

2. Disable kpatch.service:

   # systemctl disable kpatch.service
   Removed /etc/systemd/system/multi-user.target.wants/kpatch.service.

   • Note that the applied kernel patch module is still loaded:

     # kpatch list
     Loaded patch modules:
     kpatch_6_12_0_1_0_1 [enabled]
     
     Installed patch modules:
     kpatch_6_12_0_1_0_1 (6.12.0.el10_0.x86_64)

3. Reboot your system.

4. Optional: Verify the status of kpatch.service.

   # systemctl status kpatch.service
   ● kpatch.service - "Apply kpatch kernel patches"
      Loaded: loaded (/usr/lib/systemd/system/kpatch.service; disabled; vendor preset: disabled)
      Active: inactive (dead)

   The example output testifies that kpatch.service is disabled. Thereby, the kernel live patching solution is not active.

5. Verify that the kernel patch module has been unloaded.

   # kpatch list
   Loaded patch modules:
   
   Installed patch modules:
   kpatch_6_12_0_1_0_1 (6.12.0.el10_0.x86_64)

   The example output shows that a kernel patch module is still installed but the kernel is not patched.

   重要

   Currently, Red Hat does not support reverting live patches without rebooting your system. In case of any issues, contact our support team.