>>>>> [2015-11-02T12:59:30+0530]: "Nan Xiao" (nan-xiao): ,----[ nan-xiao ] | I don't disable CONFIG_MODULE_SIG configuration in kernel. Since from this | post (http://stackoverflow.com/questions/24975377/kvm-module-verification-failed-signature-and-or-required-key-missing-taintin), | the answer said only disable this option in module's Makefile is enough. `---- following config options are available (under 'enable loadable module support') CONFIG_MODULE_SIG : checks modules for valid signature on load. CONFIG_MODULE_SIG_FORCE : rejects unsigned modules or modules for which key is not available. thus, if, this is set to 'n' then loading a module with bad signature, would taint the kernel. however, if, this is set to 'y' then loading a module with bad signature will be rejected. so, my guess is that in your case, this is most likely set to 'y'. -- kind regards anupam _______________________________________________ Kernelnewbies mailing list Kernelnewbies@xxxxxxxxxxxxxxxxx http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies