Access violation in #498

taumeson opened this Issue Mar 10, 2015 · 4 comments


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I'm running MySQL Workbench on Windows 8.1 and had to upgrade paramiko as part of a suggested bug fix on the MySQL bug tracker involving having pageant running at the same time ( This was done successfully but I'm now receiving an access violation:

ERR [20150310-15:49:00.816] thr=1 paramiko.transport: File "C:\Program Files\MySQL\MySQL Workbench 6.2 CE/python/site-packages\paramiko\", line 150, in read
ERR [20150310-15:49:00.816] thr=1 paramiko.transport: ctypes.windll.kernel32.RtlMoveMemory(out, self.view + self.pos, n)
ERR [20150310-15:49:00.818] thr=1 paramiko.transport: WindowsError: exception: access violation reading 0x00007FFE258A0000

Here is the gist of the full traceback:

I'm running Windows 8.1 x64, and I know that Windows is a secondary concern. Hopefully it's something obvious but I am out of my element.


Same issue here (trying a simple dir):

 ctypes.windll.kernel32.RtlMoveMemory(out, self.view + self.pos, n)
OSError: exception: access violation reading 0xFFFFFFFFFFFFFFFF

Issue occurs with Python 3.4.3 64bit Python 2.7.9 32bit on same machine is fine. Python3 issue or 64-bit issue?


The issue only occurs in Python3 64-bit, neither in Python 32-bit/64-bit nor in Python3 32-bit

jaraco commented May 8, 2015

In back-porting #193 to, the unit tests uncovered this bug as well. The fix has been released in 3.3.


Rolling into #525, thanks @jaraco

@bitprophet bitprophet closed this Nov 3, 2015
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