linux-kernel - Re: [PATCH bpf-next] bpf: limit bpf_core_types_are

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Message-ID: <CAADnVQJZvgpo-VjUCBL8YZy8J+s7O0mv5FW+5sx8NK84Lm6FUQ@mail.gmail.com>
Date:   Thu, 27 Jan 2022 21:31:28 -0800
From:   Alexei Starovoitov <alexei.starovoitov@...il.com>
To:     Yonghong Song <yhs@...com>
Cc:     Matteo Croce <mcroce@...ux.microsoft.com>,
        bpf <bpf@...r.kernel.org>, Alexei Starovoitov <ast@...nel.org>,
        Daniel Borkmann <daniel@...earbox.net>,
        Andrii Nakryiko <andrii@...nel.org>,
        LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH bpf-next] bpf: limit bpf_core_types_are_compat() recursion

On Mon, Dec 20, 2021 at 10:34 PM Yonghong Song <yhs@...com> wrote:
>
>
> https://reviews.llvm.org/D116063 improved the error message as below
> to make it a little bit more evident what is the problem:
>
> $ clang -target bpf -O2 -g -c bug.c
>
> fatal error: error in backend: SubroutineType not supported for
> BTF_TYPE_ID_REMOTE reloc

Hi Matteo,

Are you still working on a test?
What's a timeline to repost the patch set?

Thanks!