linux-kernel - Re: [PATCH v8 0/2] bpftool: Refactor config parsing and add CET symbol matching

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Message-ID: <b245b389-e057-40d3-8e2a-7cce5c290c63@kernel.org>
Date: Mon, 1 Sep 2025 10:32:23 +0100
From: Quentin Monnet <qmo@...nel.org>
To: chenyuan_fl@....com, ast@...nel.org, daniel@...earbox.net,
 andrii@...nel.org
Cc: yonghong.song@...ux.dev, olsajiri@...il.com, bpf@...r.kernel.org,
 linux-kernel@...r.kernel.org, chenyuan@...inos.cn
Subject: Re: [PATCH v8 0/2] bpftool: Refactor config parsing and add CET
 symbol matching

2025-08-29 07:11 UTC+0100 ~ chenyuan_fl@....com
> From: Yuan CHen <chenyuan@...inos.cn>
> 
> 1. **Refactor kernel config parsing**  
>    - Moves duplicate config file handling from feature.c to common.c  
>    - Keeps all existing functionality while enabling code reuse  
> 
> 2. **Add CET-aware symbol matching**  
>    - Adjusts kprobe hook detection for x86_64 CET (endbr32/64 prefixes)  
>    - Matches symbols at both original and CET-adjusted addresses  
> 
> Changed in PATCH v4:
> * Refactor repeated code into a function.
> * Add detection for the x86 architecture.
> 
> Changed int PATH v5:
> * Remove detection for the x86 architecture.
> 
>  Changed in PATCH v6:
> * Add new helper patch (1/2) to refactor kernel config reading
> * Use the new read_kernel_config() in CET symbol matching (2/2) to check CONFIG_X86_KERNEL_IBT
> 
> Changed in PATCH v7:
> * Display actual kprobe attachment addresses instead of symbol addresses

Hi Yuan,

Is there any difference between v7 and v8 of your series? They seem
identical, from what I can see.

Quentin