On Wed, Aug 7, 2019 at 11:00 PM Alessandro Baggi <alessandro.baggi at gmail.com> wrote: > > Il 07/08/19 20:15, Akemi Yagi ha scritto: > > On Wed, Aug 7, 2019 at 9:00 AM Alessandro Baggi > > <alessandro.baggi at gmail.com> wrote: > >> > >> Il 07/08/19 01:02, Phil Perry ha scritto: > >>> On 06/08/2019 14:45, Alessandro Baggi wrote: > > > >>> Please post the actual error message in dmesg or /var/log/messages. > >>> > >>> It's likely that the kernel is just grumbling that the module is not > >>> signed (missing key), but it's just noise unless you're using > >>> SecureBoot. Posting the actual message in full will help determine if > >>> that is the case. > >>> > >>> Thanks > >>> > >>> Phil > >> > >> Hi, thank you for your reply, > >> I solve adding in "General Setup" values of current kernel on > >> localversion option and adding Module.symver from > >> /boot/symver-version.gz to module directory. > >> > >> Now I get another problem compiling the third party module (i2c-nct6775): > >> > >> "CONFIG_RETPOLINE=y but not supported by the compiler. Compiler update > >> recomended. Stop." > >> > >> I tried using scl gcc7 and 8 but get the same issue. > >> > >> I checked that retpoline is related to Spectre but checking on centos with: > >> > >> cat /sys/devices/system/cpu/vulnerabilities/spectre_v2 > >> > >> I get: > >> > >> Mitigation: IBRS (kernel), IBPB > >> > >> and RETPOLINE seems disabled (I'm wrong?). > >> > >> I ridden in a blog post that I can disable this check commenting out > >> some lines starting from N. 166 of arch/Makefile but I don't think this > >> is the best approach. > >> > >> At this point I can't understand what means the previous error and why I > >> get this error when compiling i2c-nct6775. > >> > >> Can someone point me in the right direction? > > > > Please post the output from: > > > > rpm -qa kernel\* | sort > > > > and > > > > uname -r > > > > Akemi > > kernel-3.10.0-957.12.1.el7.x86_64 > kernel-3.10.0-957.12.2.el7.x86_64 > kernel-3.10.0-957.21.3.el7.x86_64 > kernel-3.10.0-957.27.2.el7.x86_64 > kernel-3.10.0-957.el7.x86_64 > kernel-devel-3.10.0-957.21.3.el7.x86_64 > kernel-devel-3.10.0-957.27.2.el7.x86_64 > kernel-headers-3.10.0-957.27.2.el7.x86_64 > kernel-ml-5.1.0-1.el7.elrepo.x86_64 > kernel-ml-devel-5.1.0-1.el7.elrepo.x86_64 > kernel-tools-3.10.0-957.27.2.el7.x86_64 > kernel-tools-libs-3.10.0-957.27.2.el7.x86_64 > kernel-tools-libs-devel-3.10.0-957.27.2.el7.x86_64 > > > 3.10.0-957.27.2.el7.x86_64 So, you tried to build the i2c-nct6775 module against kernel-3.10.0-957.27.2.el7 under the running kernel 3.10.0-957.27.2 and you have a matching version of kernel-devel. Then I don't quite understand why you get the "not supported by the compiler" error... Akemi