linux-kernel - Re: [PATCH v2 59/62] livepatch/klp-build: Introduce klp-build script for generating livepatch modules

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Message-ID: <7uriarhovgf3fp7tiidwklopqqk34ybk6fnhu6kncwtjgz2ni6@2z7m42t4oerw>
Date: Mon, 9 Jun 2025 16:59:37 -0700
From: Josh Poimboeuf <jpoimboe@...nel.org>
To: Joe Lawrence <joe.lawrence@...hat.com>
Cc: x86@...nel.org, linux-kernel@...r.kernel.org, 
	Petr Mladek <pmladek@...e.com>, Miroslav Benes <mbenes@...e.cz>, live-patching@...r.kernel.org, 
	Song Liu <song@...nel.org>, laokz <laokz@...mail.com>, Jiri Kosina <jikos@...nel.org>, 
	Marcos Paulo de Souza <mpdesouza@...e.com>, Weinan Liu <wnliu@...gle.com>, 
	Fazla Mehrab <a.mehrab@...edance.com>, Chen Zhongjin <chenzhongjin@...wei.com>, 
	Puranjay Mohan <puranjay@...nel.org>
Subject: Re: [PATCH v2 59/62] livepatch/klp-build: Introduce klp-build script
 for generating livepatch modules

On Mon, Jun 09, 2025 at 05:20:53PM -0400, Joe Lawrence wrote:
> If you touch sound/soc/sof/intel/, klp-build will error out with:
> 
>   Building patch module: livepatch-unCVE-2024-58012.ko
>   ERROR: modpost: module livepatch-unCVE-2024-58012 uses symbol hda_dai_config from namespace SND_SOC_SOF_INTEL_HDA_COMMON, but does not import it.
>   ERROR: modpost: module livepatch-unCVE-2024-58012 uses symbol hdac_bus_eml_sdw_map_stream_ch from namespace SND_SOC_SOF_HDA_MLINK, but does not import it.
>   make[2]: *** [scripts/Makefile.modpost:145: /home/jolawren/src/centos-stream-10/klp-tmp/kmod/Module.symvers] Error 1
>   make[1]: *** [/home/jolawren/src/centos-stream-10/Makefile:1936: modpost] Error 2
>   make: *** [Makefile:236: __sub-make] Error 2
> 
> since the diff objects do not necessarily carry forward the namespace
> import.

Nice, thanks for finding that.  I completely forgot about export
namespaces.

Can you send me the patch for testing?  Is this the default centos10
config?

-- 
Josh