Hi Vipin, Thank you for the patch! Yet something to improve: [auto build test ERROR on d8f6ef45a623d650f9b97e11553adb4978f6aa70] url: https://github.com/0day-ci/linux/commits/Vipin-Sharma/KVM-Move-VM-s-worke... base: d8f6ef45a623d650f9b97e11553adb4978f6aa70 config: x86_64-rhel-8.3 (https://download.01.org/0day-ci/archive/20211215/202112150131.MaZ9xOJx-lk...) compiler: gcc-9 (Debian 9.3.0-22) 9.3.0 reproduce (this is a W=1 build): # https://github.com/0day-ci/linux/commit/fd29d23507ef3f06b61d9de1b7ecd1a0d... git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Vipin-Sharma/KVM-Move-VM-s-worker-kthreads-back-to-the-original-cgroups-before-exiting/20211214-130827 git checkout fd29d23507ef3f06b61d9de1b7ecd1a0d70136f3 # save the config file to linux build tree mkdir build_dir make W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All errors (new ones prefixed by >>, old ones prefixed by <<): --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org