linux-kernel - Re: [PATCH v2 bpf] bpf: liveness: Handle ERR_PTR from get_outer_instance() in propagate_to_outer

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Message-ID: <179de8940292950809a1b27a6d37db3772ce42f2.camel@gmail.com>
Date: Tue, 21 Oct 2025 13:40:37 +0530
From: Shardul Bankar <shardulsb08@...il.com>
To: Eduard Zingerman <eddyz87@...il.com>, bpf@...r.kernel.org
Cc: Alexei Starovoitov <ast@...nel.org>, Daniel Borkmann
 <daniel@...earbox.net>,  Andrii Nakryiko <andrii@...nel.org>, Martin KaFai
 Lau <martin.lau@...ux.dev>, Song Liu <song@...nel.org>,  Yonghong Song
 <yonghong.song@...ux.dev>, 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>, open list
 <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2 bpf] bpf: liveness: Handle ERR_PTR from
 get_outer_instance() in propagate_to_outer_instance()

On Mon, 2025-10-20 at 20:26 -0700, Eduard Zingerman wrote:
> This description is misleading.
> The only reasons for this patch to land are:
> - reduce cognitive load to avoid thinking about special case;
> - silence the false-positive notices from the tooling.
Thanks, Eduard.
I’ve updated the commit message in v3 to reflect your points — the
patch now clarifies intent and notes that it reduces cognitive load and
silences tooling false positives.
No functional change is claimed.

Link:
https://lore.kernel.org/all/20251021080849.860072-1-shardulsb08@gmail.com/

Thanks again for the detailed review,
Shardul