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 --- scripts/pahole-flags.sh | 4 ++++ 1 file changed, 4 insertions(+)

diff --git a/scripts/pahole-flags.sh b/scripts/pahole-flags.sh index 0d99ef17e4a5..d4f3d63cb434 100755 --- a/scripts/pahole-flags.sh +++ b/scripts/pahole-flags.sh @@ -20,4 +20,8 @@ if [ "${pahole_ver}" -ge "122" ]; then extra_paholeopt="${extra_paholeopt} -j" fi

+if [ "${pahole_ver}" -ge "124" ]; then + extra_paholeopt="${extra_paholeopt} --skip_encoding_btf_enum64" +fi + echo ${extra_paholeopt}