From: Dmitry Safonov <dima@xxxxxxxxxx> Date: Sun, 05 Aug 2018 00:26:38 +0100 > Thanks for the testing, sorry again for the breakage. > Will send the patch shortly (with sizeof(unsigned long long) instead of > hard-coded 64). Hopefully, not too late. 'groups' is "long unsigned int" not "unsigned long long" long unsigned int groups = nladdr->nl_groups; And nladdr->nl_groups is specified as "__u32" So the size of the relevant bits is actually strictly 32-bit. This makes also the "ULL" in your constant specification incorrect as well. So much crazy stuff going on here :-/
