From: Yonghong Song <yhs@fb.com>
To: <bpf@vger.kernel.org>
Cc: Alexei Starovoitov <ast@kernel.org>,
Andrii Nakryiko <andrii@kernel.org>,
Daniel Borkmann <daniel@iogearbox.net>, <kernel-team@fb.com>
Subject: [PATCH bpf-next 0/2] bpf: fix a couple of missed btf_type_tag handling in libbpf
Date: Mon, 15 Nov 2021 08:39:32 -0800 [thread overview]
Message-ID: <20211115163932.3921753-1-yhs@fb.com> (raw)
Commit 2dc1e488e5cd ("libbpf: Support BTF_KIND_TYPE_TAG") added
BTF_KIND_TYPE_TAG support. But BTF_KIND_TYPE_TAG is not handled
properly in libbpf btf_dedup_is_equiv() which will cause pahole dedup
failure if the kernel has the following hack:
#define __user __attribute__((btf_type_tag("user")))
Patch 1 fixed the issue and Patch 2 added a test for it.
Yonghong Song (2):
libbpf: fix a couple of missed btf_type_tag handling in btf.c
selftests/bpf: add a dedup selftest with equivalent structure types
tools/lib/bpf/btf.c | 2 ++
tools/testing/selftests/bpf/prog_tests/btf.c | 26 ++++++++++++++++++++
2 files changed, 28 insertions(+)
--
2.30.2
next reply other threads:[~2021-11-15 16:40 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-11-15 16:39 Yonghong Song [this message]
2021-11-15 16:39 ` [PATCH bpf-next 1/2] libbpf: fix a couple of missed btf_type_tag handling in btf.c Yonghong Song
2021-11-15 16:39 ` [PATCH bpf-next 2/2] selftests/bpf: add a dedup selftest with equivalent structure types Yonghong Song
2021-11-16 12:27 ` Daniel Borkmann
2021-11-16 16:19 ` Yonghong Song
2021-11-16 12:20 ` [PATCH bpf-next 0/2] bpf: fix a couple of missed btf_type_tag handling in libbpf patchwork-bot+netdevbpf
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