r0 = socket$nl_sock_diag(0x10, 0x3, 0x4)
r1 = openat$sr(0xffffffffffffff9c, &(0x7f0000000000), 0x4840, 0x0)
sendfile(r0, r1, &(0x7f0000000100)=0x100000000, 0x7)