r0 = getpgrp(0x0)
r1 = pidfd_open(r0, 0x0)
r2 = socket$inet6_tcp(0xa, 0x1, 0x0)
r3 = pidfd_getfd(r1, r2, 0x0)
r4 = memfd_create(&(0x7f0000000040)='-@[\x00', 0x0)
sendfile(r3, r4, 0x0, 0x1)