* [PATCH stable 5.19] kbuild: Add skip_encoding_btf_enum64 option to pahole
@ 2022-09-16 17:12 Martin Rodriguez Reboredo
2022-09-16 17:14 ` kernel test robot
0 siblings, 1 reply; 2+ messages in thread
From: Martin Rodriguez Reboredo @ 2022-09-16 17:12 UTC (permalink / raw)
To: stable
Cc: bpf, Arnaldo Carvalho de Melo, Daniel Borkmann, Jiri Olsa,
Andrii Nakryiko, Thorsten Leemhuis
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}
--
2.37.3
^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: [PATCH stable 5.19] kbuild: Add skip_encoding_btf_enum64 option to pahole
2022-09-16 17:12 [PATCH stable 5.19] kbuild: Add skip_encoding_btf_enum64 option to pahole Martin Rodriguez Reboredo
@ 2022-09-16 17:14 ` kernel test robot
0 siblings, 0 replies; 2+ messages in thread
From: kernel test robot @ 2022-09-16 17:14 UTC (permalink / raw)
To: Martin Rodriguez Reboredo; +Cc: stable, kbuild-all
Hi,
Thanks for your patch.
FYI: kernel test robot notices the stable kernel rule is not satisfied.
Rule: 'Cc: stable@vger.kernel.org' or 'commit <sha1> upstream.'
Subject: [PATCH stable 5.19] kbuild: Add skip_encoding_btf_enum64 option to pahole
Link: https://lore.kernel.org/stable/20220916171234.841556-1-yakoyoku%40gmail.com
The check is based on https://www.kernel.org/doc/html/latest/process/stable-kernel-rules.html
--
0-DAY CI Kernel Test Service
https://01.org/lkp
^ permalink raw reply [flat|nested] 2+ messages in thread
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