linux-kernel - [PATCH v2 10/10] module loader: enforce symbol import protection

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Message-ID: <20251020230056.726931-1-sidnayyar@google.com>
Date: Mon, 20 Oct 2025 23:00:56 +0000
From: Siddharth Nayyar <sidnayyar@...gle.com>
To: lkp@...el.com
Cc: arnd@...db.de, gprocida@...gle.com, linux-arch@...r.kernel.org, 
	linux-kbuild@...r.kernel.org, linux-kernel@...r.kernel.org, 
	linux-modules@...r.kernel.org, llvm@...ts.linux.dev, maennich@...gle.com, 
	mcgrof@...nel.org, nathan@...nel.org, nicolas.schier@...ux.dev, 
	oe-kbuild-all@...ts.linux.dev, petr.pavlu@...e.com, samitolvanen@...gle.com, 
	sidnayyar@...gle.com
Subject: [PATCH v2 10/10] module loader: enforce symbol import protection

On Tue, Oct 14, 2025 at 8:36AM kernel test robot <lkp@...el.com> wrote:
>
> Hi Siddharth,
>
> kernel test robot noticed the following build errors:
>
> [auto build test ERROR on arnd-asm-generic/master]
> [also build test ERROR on soc/for-next linus/master v6.18-rc1 next-20251013]
> [cannot apply to mcgrof/modules-next]
> [If your patch is applied to the wrong git tree, kindly drop us a note.
> And when submitting patch, we suggest to use '--base' as documented in
> https://git-scm.com/docs/git-format-patch#_base_tree_information]
>
> url:    https://github.com/intel-lab-lkp/linux/commits/Siddharth-Nayyar/define-kernel-symbol-flags/20251014-005305
> base:   https://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic.git master
> patch link:    https://lore.kernel.org/r/20251013153918.2206045-11-sidnayyar%40google.com
> patch subject: [PATCH v2 10/10] module loader: enforce symbol import protection
> config: x86_64-kexec (https://download.01.org/0day-ci/archive/20251014/202510141538.VZqnRzHh-lkp@intel.com/config)
> compiler: clang version 20.1.8 (https://github.com/llvm/llvm-project 87f0227cb60147a26a1eeb4fb06e3b505e9c7261)
> reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251014/202510141538.VZqnRzHh-lkp@intel.com/reproduce)
>
> If you fix the issue in a separate patch/commit (i.e. not just a new version of
> the same patch/commit), kindly add following tags
> | Reported-by: kernel test robot <lkp@...el.com>
> | Closes: https://lore.kernel.org/oe-kbuild-all/202510141538.VZqnRzHh-lkp@intel.com/
>
> All errors (new ones prefixed by >>):
>
> >> kernel/module/main.c:1271:32: error: no member named 'sig_ok' in 'struct module'
>     1271 |         if (fsa.is_protected && !mod->sig_ok) {
>          |                                  ~~~  ^
>    1 error generated.

'sig_ok' is only defined when CONFIG_MODULE_SIG is set. I will wrap this
statement in '#ifdef CONFIG_MODULE_SIG' in a follow-up patch.

Regards,
Siddharth Nayyar