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