ubsan_prologue: ================================================================================
ubsan_prologue: UBSAN: shift-out-of-bounds in fat/fs_fat32util.c:989:40
__ubsan_handle_shift_out_of_bounds: left shift of 268435455 by 4 places cannot be represented in type 'int'
ubsan_epilogue: ================================================================================
Signed-off-by: chao an <anchao@xiaomi.com>