netdev - [PATCH bpf 0/2] fix btf_dedup()'s type graph equivalence check

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Date:   Tue, 26 Mar 2019 22:00:05 -0700
From:   <andrii.nakryiko@...il.com>
To:     <andrii.nakryiko@...il.com>, <ast@...com>, <yhs@...com>,
        <bpf@...r.kernel.org>, <netdev@...r.kernel.org>, <acme@...nel.org>,
        <kernel-team@...com>, <daniel@...earbox.net>
CC:     Andrii Nakryiko <andriin@...com>
Subject: [PATCH bpf 0/2] fix btf_dedup()'s type graph equivalence check

From: Andrii Nakryiko <andriin@...com>

This patch set fixes bug in btf_dedup_is_equiv() check mishandling equivalence
comparison between VOID kind in candidate type graph versus anonymous non-VOID
kind in canonical type graph.

Patch #1 fixes bug, by comparing candidate and canonical kinds for equality,
before proceeding to kind-specific checks.
Patch #2 adds a test case testing this specific scenario.

Andrii Nakryiko (2):
  libbpf: fix btf_dedup equivalence check handling of different kinds
  selftests/bpf: add btf_dedup test for VOID equivalence check

 tools/lib/bpf/btf.c                    |  3 ++
 tools/testing/selftests/bpf/test_btf.c | 47 ++++++++++++++++++++++++++
 2 files changed, 50 insertions(+)

-- 
2.17.1