Hi All, Since 3193c0836f20 ("bpf: Disable GCC -fgcse optimization for ___bpf_prog_run()"), We have got the following warning, kernel/bpf/core.o: warning: objtool: ___bpf_prog_run.cold()+0x7: call without frame pointer save/setup If reverting the above commit, we will get the following warning, kernel/bpf/core.o: warning: objtool: ___bpf_prog_run()+0x8b9: sibling call from callable instruction with modified stack frame if CONFIG_RETPOLINE=n, and no warning if CONFIG_RETPOLINE=y Zhe