linux-kernel - Re: pahole next->master. Was: [PATCH bpf-next v1] selftests/bpf: Guard addr_space_cast code with __BPF_FEATURE_ADDR_SPACE

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Message-ID: <aP-InycOjSO8EqcO@x1>
Date: Mon, 27 Oct 2025 11:58:39 -0300
From: Arnaldo Carvalho de Melo <acme@...nel.org>
To: Alexei Starovoitov <alexei.starovoitov@...il.com>
Cc: Jiayuan Chen <jiayuan.chen@...ux.dev>,
	Alan Maguire <alan.maguire@...cle.com>,
	Anton Protopopov <a.s.protopopov@...il.com>,
	Yonghong Song <yonghong.song@...ux.dev>, bpf <bpf@...r.kernel.org>,
	Andrii Nakryiko <andrii@...nel.org>,
	Eduard Zingerman <eddyz87@...il.com>,
	Alexei Starovoitov <ast@...nel.org>,
	Daniel Borkmann <daniel@...earbox.net>,
	Martin KaFai Lau <martin.lau@...ux.dev>, Song Liu <song@...nel.org>,
	John Fastabend <john.fastabend@...il.com>,
	KP Singh <kpsingh@...nel.org>, Stanislav Fomichev <sdf@...ichev.me>,
	Hao Luo <haoluo@...gle.com>, Jiri Olsa <jolsa@...nel.org>,
	Shuah Khan <shuah@...nel.org>,
	Nathan Chancellor <nathan@...nel.org>,
	Nick Desaulniers <nick.desaulniers+lkml@...il.com>,
	Bill Wendling <morbo@...gle.com>,
	Justin Stitt <justinstitt@...gle.com>,
	Puranjay Mohan <puranjay@...nel.org>,
	"open list:KERNEL SELFTEST FRAMEWORK" <linux-kselftest@...r.kernel.org>,
	LKML <linux-kernel@...r.kernel.org>,
	clang-built-linux <llvm@...ts.linux.dev>
Subject: Re: pahole next->master. Was: [PATCH bpf-next v1] selftests/bpf:
 Guard addr_space_cast code with __BPF_FEATURE_ADDR_SPACE_CAST

On Thu, Oct 23, 2025 at 08:42:34AM -0700, Alexei Starovoitov wrote:
> On Thu, Oct 23, 2025 at 12:50 AM Jiayuan Chen <jiayuan.chen@...ux.dev> wrote:
> > thanks, but version 1.30 didn't work in my tests - even pahole's master branch fails, only the next branch works...
> >

> > It seems that the 'old' pahole parses some kfuncs incorrectly, for example bpf_dynptr_slice().
l
> Alan,
 
> the introduction of the 'next' branch screwed up the workflow for many people.
> Let's remove it and merge everything into master.
> People expect master branch to be the one where active development
> is happening and the source of truth for the latest features.

My bad, I've been away for too long, next is supposed to be with things
for a short while, testing for a few days, for CI consumption, then move
to master, rinse repeat.

I think we should go back to that model.

- Arnaldo