r0 = openat(0xffffffffffffff9c, &(0x7f0000000000)='/proc/self/exe\x00', 0x0, 0x0)
r1 = openat$ptmx(0xffffffffffffff9c, &(0x7f0000000100), 0x40001, 0x0)
sendfile(r1, r0, 0x0, 0x200)