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Date:   Mon, 24 Aug 2020 17:05:22 -0700
From:   Hao Luo <>
To:     Yonghong Song <>
Cc:     Networking <>, bpf <>,
        open list <>,
        "open list:KERNEL SELFTEST FRAMEWORK" 
        <>, Shuah Khan <>,
        Alexei Starovoitov <>,
        Andrii Nakryiko <>,
        Daniel Borkmann <>,
        Martin KaFai Lau <>,
        Song Liu <>,
        John Fastabend <>,
        KP Singh <>,
        Quentin Monnet <>,
        Steven Rostedt <>,
        Ingo Molnar <>, Andrey Ignatov <>,
        Jakub Sitnicki <>
Subject: Re: [PATCH bpf-next v1 1/8] bpf: Introduce pseudo_btf_id


An update on this thread. I successfully reproduced this issue on a
8.2.0 gcc compiler, It looks like gcc 4.9 did not have this issue. I
was also using clang which did not show this bug.

It seems having a DW_AT_specification that refers to another
DW_TAG_variable isn't handled in pahole. I have a (maybe hacky) pahole
patch as fix and let me clean it up and post for review soon.


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