| From | Greg Kroah-Hartman <> | Subject | [PATCH 5.15 102/107] kbuild: Add skip_encoding_btf_enum64 option to pahole | Date | Tue, 6 Sep 2022 15:31:23 +0200 |
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From: Martin Rodriguez Reboredo <yakoyoku@gmail.com>
New pahole (version 1.24) generates by default new BTF_KIND_ENUM64 BTF tag, which is not supported by stable kernel.
As a result the kernel with CONFIG_DEBUG_INFO_BTF option will fail to compile with following error:
BTFIDS vmlinux FAILED: load BTF from vmlinux: Invalid argument
New pahole provides --skip_encoding_btf_enum64 option to skip BTF_KIND_ENUM64 generation and produce BTF supported by stable kernel.
Adding this option to scripts/pahole-flags.sh.
This change does not have equivalent commit in linus tree, because linus tree has support for BTF_KIND_ENUM64 tag, so it does not need to be disabled.
Signed-off-by: Martin Rodriguez Reboredo <yakoyoku@gmail.com> Signed-off-by: Jiri Olsa <jolsa@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> --- scripts/pahole-flags.sh | 4 ++++ 1 file changed, 4 insertions(+)
--- a/scripts/pahole-flags.sh +++ b/scripts/pahole-flags.sh @@ -17,4 +17,8 @@ if [ "${pahole_ver}" -ge "121" ]; then extra_paholeopt="${extra_paholeopt} --btf_gen_floats" fi +if [ "${pahole_ver}" -ge "124" ]; then + extra_paholeopt="${extra_paholeopt} --skip_encoding_btf_enum64" +fi + echo ${extra_paholeopt}
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