1.1.1.1 is simply a free DNS, 1.1.1.2 blocks malware, and 1.1.1.3 blocks both malware and adult content. It's a service that does exactly what it's supposed to do.
" one\n"
" two\n"
" three\n" npins = MAX(npins, syscalls[i].sysno)
Then `SYS_kbind` seems to be a signed int. So this comparison will be signed and "fix" the negative `npins` to `SYS_kbind`: npins = MAX(npins, SYS_kbind)
And finally the `sysno` index might be out of bounds here: pins[syscalls[i].sysno] = syscalls[i].offset
But maybe I'm completely wrong, I'm not interested in researching it too much.