tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 66f4beaa6c1d28161f534471484b2daa2de1dce0 commit: 63b3f96e1a989846a5a521d4fbef4bc86406929d kvm: Select SCHED_INFO instead of TASK_DELAY_ACCT date: 6 months ago config: x86_64-buildonly-randconfig-r002-20211009 (attached as .config) compiler: gcc-9 (Debian 9.3.0-22) 9.3.0 reproduce (this is a W=1 build): # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit... git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git fetch --no-tags linus master git checkout 63b3f96e1a989846a5a521d4fbef4bc86406929d # save the attached .config 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 warnings (new ones prefixed by >>): vmlinux.o: warning: objtool: __do_fast_syscall_32()+0xf2: call to trace_hardirqs_off() leaves .noinstr.text section vmlinux.o: warning: objtool: __svm_vcpu_run()+0xb4: BP used as a scratch register vmlinux.o: warning: objtool: __svm_sev_es_vcpu_run()+0x1c: BP used as a scratch register vmlinux.o: warning: objtool: __wrgsbase_inactive()+0x38: call to ftrace_likely_update() leaves .noinstr.text section vmlinux.o: warning: objtool: __rdgsbase_inactive()+0x35: call to ftrace_likely_update() leaves .noinstr.text section vmlinux.o: warning: objtool: fixup_bad_iret()+0x7a: call to ftrace_likely_update() leaves .noinstr.text section vmlinux.o: warning: objtool: noist_exc_debug()+0x38: call to ftrace_likely_update() leaves .noinstr.text section vmlinux.o: warning: objtool: exc_nmi()+0xbb: call to ftrace_likely_update() leaves .noinstr.text section vmlinux.o: warning: objtool: poke_int3_handler()+0x45: call to ftrace_likely_update() leaves .noinstr.text section vmlinux.o: warning: objtool: mce_check_crashing_cpu()+0x19: call to ftrace_likely_update() leaves .noinstr.text section vmlinux.o: warning: objtool: do_machine_check()+0xc41: call to ftrace_likely_update() leaves .noinstr.text section vmlinux.o: warning: objtool: exc_machine_check()+0x63: call to ftrace_likely_update() leaves .noinstr.text section vmlinux.o: warning: objtool: irqentry_nmi_enter()+0x4c: call to ftrace_likely_update() leaves .noinstr.text section vmlinux.o: warning: objtool: irqentry_nmi_exit()+0x38: call to ftrace_likely_update() leaves .noinstr.text section vmlinux.o: warning: objtool: enter_from_user_mode()+0x3d: call to ftrace_likely_update() leaves .noinstr.text section vmlinux.o: warning: objtool: syscall_enter_from_user_mode()+0x46: call to ftrace_likely_update() leaves .noinstr.text section vmlinux.o: warning: objtool: syscall_enter_from_user_mode_prepare()+0x3d: call to ftrace_likely_update() leaves .noinstr.text section vmlinux.o: warning: objtool: irqentry_enter_from_user_mode()+0x3d: call to ftrace_likely_update() leaves .noinstr.text section vmlinux.o: warning: objtool: irqentry_exit()+0x2d: call to ftrace_likely_update() leaves .noinstr.text section vmlinux.o: warning: objtool: context_tracking_recursion_enter()+0x40: call to ftrace_likely_update() leaves .noinstr.text section vmlinux.o: warning: objtool: __context_tracking_enter()+0x2f: call to ftrace_likely_update() leaves .noinstr.text section --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org