netdev - Re: linux-next failing build due to missing cubictcp

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Message-ID: <20210423175528.GF6564@kitsune.suse.cz>
Date:   Fri, 23 Apr 2021 19:55:28 +0200
From:   Michal Suchánek <msuchanek@...e.de>
To:     Yonghong Song <yhs@...com>
Cc:     linux-kernel@...r.kernel.org, Martin KaFai Lau <kafai@...com>,
        "David S. Miller" <davem@...emloft.net>,
        Hideaki YOSHIFUJI <yoshfuji@...ux-ipv6.org>,
        David Ahern <dsahern@...nel.org>,
        Jakub Kicinski <kuba@...nel.org>,
        Alexei Starovoitov <ast@...nel.org>,
        Daniel Borkmann <daniel@...earbox.net>,
        Andrii Nakryiko <andrii@...nel.org>,
        Song Liu <songliubraving@...com>,
        John Fastabend <john.fastabend@...il.com>,
        KP Singh <kpsingh@...nel.org>, netdev@...r.kernel.org,
        bpf@...r.kernel.org
Subject: Re: linux-next failing build due to missing cubictcp_state symbol

On Fri, Apr 23, 2021 at 07:41:29AM -0700, Yonghong Song wrote:
> 
> 
> On 4/23/21 6:05 AM, Michal Suchánek wrote:
> > Hello,
> > 
> > I see this build error in linux-next (config attached).
> > 
> > [ 4939s]   LD      vmlinux
> > [ 4959s]   BTFIDS  vmlinux
> > [ 4959s] FAILED unresolved symbol cubictcp_state
> > [ 4960s] make[1]: ***
> > [/home/abuild/rpmbuild/BUILD/kernel-vanilla-5.12~rc8.next.20210422/linux-5.12-rc8-next-20210422/Makefile:1277:
> > vmlinux] Error 255
> > [ 4960s] make: *** [../Makefile:222: __sub-make] Error 2
> 
> Looks like you have DYNAMIC_FTRACE config option enabled already.
> Could you try a later version of pahole?

Is this requireent new?

I have pahole 1.20, and master does build without problems.

If newer version is needed can a check be added?

Thanks

Michal