On Sat, 2018-08-04 at 16:33 -0700, David Miller wrote: > 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. I think, ULL is right - I did it to make shift for 32 well-defined. (which in result has 32 bits set) > > So much crazy stuff going on here :-/