右键执行git bash报 mintty.exe.stackdump_bash.exe.stackdump

git 客户端版本 Git-2.27.0-32-bit，环境win7，执行右键的git bash无反应，当前目录生成一个mintty.exe.stackdump：

Exception: STATUS_ACCESS_VIOLATION at eip=000705C6
eax=00000000 ebx=0045028B ecx=0022C5CC edx=77646C04 esi=004A0410 edi=80000000
ebp=0022CB48 esp=0022C614 program=C:\Program Files\Git\usr\bin\mintty.exe, pid 865, thread main
cs=001B ds=0023 es=0023 fs=003B gs=0000 ss=0023
Stack trace:
Frame     Function  Args
0022CB48  000705C6 (30531180, 3053118A, 0022CD28, 3000AFA5)
0022CD28  3000AFA5 (00000000, 0022CD84, 30009DD0, 0000174C)
0022CD84  300088B2 (00000000, 00000000, 00000000, 00000000)
End of stack trace

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网上有的资料说更换null.sys，查看状态，貌似是好的，状态一直是running，就没有换：

C:\Users\Administrator>sc query null

SERVICE_NAME: null
        TYPE               : 1  KERNEL_DRIVER
        STATE              : 4  RUNNING
                                (STOPPABLE, NOT_PAUSABLE, IGNORES_SHUTDOWN)
        WIN32_EXIT_CODE    : 0  (0x0)
        SERVICE_EXIT_CODE  : 0  (0x0)
        CHECKPOINT         : 0x0
        WAIT_HINT          : 0x0

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没找到原因，换了个低版本好了，Git-2.15.0-32-bit.exe