tree:   https://git.kernel.org/pub/scm/linux/kernel/git/zohar/linux-integrity.git next-queued-testing
head:   5f46b4c8c1915cdcd16226e823370de6d5bb2fd2
commit: fcf338449af547bc70428824034f07b93c2d6626 [7/12] x86/ima: require signed kernel modules
config: x86_64-randconfig-s3-03011318 (attached as .config)
compiler: gcc-8 (Debian 8.2.0-20) 8.2.0
reproduce:
        git checkout fcf338449af547bc70428824034f07b93c2d6626
        # save the attached .config to linux build tree
        make ARCH=x86_64 

All errors (new ones prefixed by >>):

   arch/x86/kernel/ima_arch.c: In function 'arch_get_ima_policy':

quoted

arch/x86/kernel/ima_arch.c:78:4: error: implicit declaration of function 'set_module_sig_enforced' [-Werror=implicit-function-declaration]

       set_module_sig_enforced();
       ^~~~~~~~~~~~~~~~~~~~~~~
   cc1: some warnings being treated as errors

vim +/set_module_sig_enforced +78 arch/x86/kernel/ima_arch.c

    73	
    74	const char * const *arch_get_ima_policy(void)
    75	{
    76		if (IS_ENABLED(CONFIG_IMA_ARCH_POLICY) && arch_ima_get_secureboot()) {
    77			if (IS_ENABLED(CONFIG_MODULE_SIG))
  > 78				set_module_sig_enforced();

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