netdev - Re: [PATCH bpf 1/2] bpf: allow empty module BTFs

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Message-ID: <CAEf4BzY4LWhyHfd3OpvrM5DB7qieOemcxzp0GBtqWJTw56PMCg@mail.gmail.com>
Date:   Mon, 25 Jan 2021 17:26:15 -0800
From:   Andrii Nakryiko <andrii.nakryiko@...il.com>
To:     Christopher William Snowhill <chris@...e54.net>
Cc:     patchwork-bot+netdevbpf@...nel.org,
        Andrii Nakryiko <andrii@...nel.org>, bpf <bpf@...r.kernel.org>,
        Networking <netdev@...r.kernel.org>,
        Alexei Starovoitov <ast@...com>,
        Daniel Borkmann <daniel@...earbox.net>,
        Kernel Team <kernel-team@...com>
Subject: Re: [PATCH bpf 1/2] bpf: allow empty module BTFs

On Sun, Jan 24, 2021 at 2:28 AM Christopher William Snowhill
<chris@...e54.net> wrote:
>
> When is this being applied to an actual kernel? 5.11 is still quite broken without these two patches. Unless you're not using a vfat EFI partition, I guess.
>

It's in v5.11-rc5.

> On Tue, Jan 12, 2021, at 12:20 PM, patchwork-bot+netdevbpf@...nel.org wrote:
> > Hello:
> >
> > This series was applied to bpf/bpf.git (refs/heads/master):
> >
> > On Sat, 9 Jan 2021 23:03:40 -0800 you wrote:
> > > Some modules don't declare any new types and end up with an empty BTF,
> > > containing only valid BTF header and no types or strings sections. This
> > > currently causes BTF validation error. There is nothing wrong with such BTF,
> > > so fix the issue by allowing module BTFs with no types or strings.
> > >
> > > Reported-by: Christopher William Snowhill <chris@...e54.net>
> > > Fixes: 36e68442d1af ("bpf: Load and verify kernel module BTFs")
> > > Signed-off-by: Andrii Nakryiko <andrii@...nel.org>
> > >
> > > [...]
> >
> > Here is the summary with links:
> >   - [bpf,1/2] bpf: allow empty module BTFs
> >     https://git.kernel.org/bpf/bpf/c/bcc5e6162d66
> >   - [bpf,2/2] libbpf: allow loading empty BTFs
> >     https://git.kernel.org/bpf/bpf/c/b8d52264df85
> >
> > You are awesome, thank you!
> > --
> > Deet-doot-dot, I am a bot.
> > https://korg.docs.kernel.org/patchwork/pwbot.html
> >
> >
> >