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kbuild, btf: Fix dependencies for DEBUG_INFO_BTF
commit7d32e69310
upstream. Currently turning on DEBUG_INFO_SPLIT when DEBUG_INFO_BTF is also enabled will produce invalid btf file, since gen_btf function in link-vmlinux.sh script doesn't handle *.dwo files. Enabling DEBUG_INFO_REDUCED will also produce invalid btf file, and using GCC_PLUGIN_RANDSTRUCT with BTF makes no sense. Fixes:e83b9f5544
("kbuild: add ability to generate BTF type info for vmlinux") Reported-by: Jann Horn <jannh@google.com> Reported-by: Liu Yiding <liuyd.fnst@cn.fujitsu.com> Signed-off-by: Slava Bacherikov <slava@bacher09.org> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Reviewed-by: Kees Cook <keescook@chromium.org> Acked-by: KP Singh <kpsingh@google.com> Acked-by: Andrii Nakryiko <andriin@fb.com> Link: https://lore.kernel.org/bpf/20200402204138.408021-1-slava@bacher09.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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@ -223,6 +223,8 @@ config DEBUG_INFO_DWARF4
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config DEBUG_INFO_BTF
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bool "Generate BTF typeinfo"
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depends on DEBUG_INFO
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depends on !DEBUG_INFO_SPLIT && !DEBUG_INFO_REDUCED
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depends on !GCC_PLUGIN_RANDSTRUCT || COMPILE_TEST
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help
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Generate deduplicated BTF type information from DWARF debug info.
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Turning this on expects presence of pahole tool, which will convert
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