Messages in this thread | | | From | He Zhe <> | Subject | kernel/bpf/core.o: warning: objtool: ___bpf_prog_run.cold()+0x7: call without frame pointer save/setup | Date | Mon, 26 Aug 2019 22:42:53 +0800 |
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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
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