r0 = socket$netlink(0x10, 0x3, 0x0)
getsockopt$sock_cred(r0, 0x1, 0x11, &(0x7f0000000000)={0x0, 0x0, <r1=>0x0}, &(0x7f0000000040)=0xc)
fchown(r0, 0xffffffffffffffff, r1)