stm32f7 hal库的片内flash编程问题

_void FLASH_Erase_Sector(uint32_t Sector, uint8_t VoltageRange)
{
uint32_t tmp_psize = 0;

assert_param(IS_FLASH_SECTOR(Sector));
assert_param(IS_VOLTAGERANGE(VoltageRange));
..............._
省略
...............
DSB();
}_
运行到DSB()指令后，jlink调试会停止run，报错如下：

**JLink Warning: CPU could not be halted
**JLink Error: Can not read register 15 (R15) while CPU is running
**JLink Error: Can not read register 16 (XPSR) while CPU is running
**JLink Error: Can not read register 0 (R0) while CPU is running
...
省略
...
**JLink E_rror: Can not read register 64 (FPS31) while CPU is running_**

但是如果点击几下run后，调试恢复正常，代码开始全速run。
有没有人用stm32f7+hal操作内部flash遇到这样的问题，求分享

https://blog.csdn.net/shoufei403/article/details/81978731