r0 = openat(0xffffffffffffff9c, &(0x7f0000000040)='./file0\x00', 0x46e2, 0x0)
ftruncate(r0, 0x1000004)
socketpair$unix(0x1, 0x2, 0x0, &(0x7f0000000100)={<r1=>0xffffffffffffffff})
sendfile(r1, r0, 0x0, 0xb052)
poll(&(0x7f0000000000)=[{r1, 0xa9646f62a5dcde83}], 0x1, 0x0)