Hi Isaku, First bad commit (maybe != root cause): tree: https://git.kernel.org/pub/scm/virt/kvm/kvm.git kvm-tdx-5.17 head: a50e4531e92e36f185ea32843c149c4703451109 commit: 820e729f6c1e56e3baf45122b707a0ddbfafaaae [51/141] KVM: TDX: Add a function for KVM to invoke SEAMCALL config: x86_64-allyesconfig (https://download.01.org/0day-ci/archive/20220418/202204180253.4NDA9ZES-lkp@xxxxxxxxx/config) compiler: gcc-11 (Debian 11.2.0-19) 11.2.0 reproduce (this is a W=1 build): # https://git.kernel.org/pub/scm/virt/kvm/kvm.git/commit/?id=820e729f6c1e56e3baf45122b707a0ddbfafaaae git remote add kvm https://git.kernel.org/pub/scm/virt/kvm/kvm.git git fetch --no-tags kvm kvm-tdx-5.17 git checkout 820e729f6c1e56e3baf45122b707a0ddbfafaaae # 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@xxxxxxxxx> All warnings (new ones prefixed by >>): >> arch/x86/kvm/vmx/seamcall.o: warning: objtool: kvm_seamcall()+0x3a: missing int3 after ret -- 0-DAY CI Kernel Test Service https://01.org/lkp