r0 = openat$procfs(0xffffffffffffff9c, &(0x7f0000000000)='/proc/mdstat\x00', 0x0, 0x0)
ppoll(&(0x7f00000000c0)=[{r0}], 0x1, &(0x7f0000000140)={0x0, 0x989680}, 0x0, 0x0)