r0 = syz_open_procfs(0x0, &(0x7f0000000100)='mountstats\x00')
preadv(r0, &(0x7f00000012c0)=[{&(0x7f0000000040)=""/56, 0x38}, {&(0x7f0000000080)=""/6, 0x6}], 0x2, 0x0, 0x0)