The Linux kernel wouldn't have features like ASLR, protected_{hardlinks,symlinks}, dmesg_restrict, kptr_restrict, ptrace_scope and lots more if not for PaX/grse

The Linux kernel wouldn't have features like ASLR, protected_{hardlinks,symlinks}, dmesg_restrict, kptr_restrict, ptrace_scope and lots more if not for PaX/grsecurity. The fact that pipacs and spender no longer spend their time pushing stuff upstream doesn't mean that upstream doesn't benefit in a huge way from grsecurity via others like Kees Cook who are willing to deal with the politics. grsecurity doesn't violate the Linux trademark or licensing. It's not a good point at all. You wonder why they don't contribute upstream directly? It has a lot to do with this entitled attitude.