syz_mount_image$msdos(&(0x7f00000104c0), &(0x7f0000010500)='./file0\x00', 0x0, 0x0, 0x0, 0x0, &(0x7f0000010b80)={[{@fat=@umask}, {@fat=@codepage={'codepage', 0x3d, '936'}}]})