r0 = openat$procfs(0xffffffffffffff9c, &(0x7f0000000140)='/proc/vmstat\x00', 0x0, 0x0)
r1 = openat$procfs(0xffffffffffffff9c, &(0x7f0000000140)='/proc/mdstat\x00', 0x0, 0x0)
poll(&(0x7f00000001c0)=[{r0, 0x4}, {r1}], 0x2, 0x0)