mount$cgroup2(0x0, 0x0, 0x0, 0x0, &(0x7f00000003c0))
r0 = syz_open_procfs(0x0, &(0x7f0000000040)='smaps_rollup\x00')
pread64(r0, &(0x7f0000000300)=""/173, 0xad, 0x0)