r0 = openat$procfs(0xffffffffffffff9c, &(0x7f0000000000)='/proc/vmstat\x00', 0x0, 0x0)
preadv(r0, &(0x7f0000000240)=[{0x0}, {0x0}, {&(0x7f00000001c0)=""/69, 0x45}], 0x3, 0x0, 0x0)