Eryk Sun <[email protected]> added the comment:
> I seem to be consistingly hitting this issue.
It will help with test development if you can provide a minimal example that
reliably reproduces the problem.
In msg353064 I see DuplicateHandle calls failing with ERROR_ACCESS_DENIED (5).
Assuming the process handles have the required PROCESS_DUP_HANDLE access, it's
most likely the case that the underlying NtDuplicateObject system call is
failing with STATUS_PROCESS_IS_TERMINATING (0xC000010A). For example:
import ctypes
ntdll = ctypes.WinDLL('ntdll')
from subprocess import Popen, PIPE
from _winapi import GetCurrentProcess, TerminateProcess
from _winapi import DuplicateHandle, DUPLICATE_SAME_ACCESS
p = Popen('cmd.exe', stdin=PIPE, stdout=PIPE, stderr=PIPE)
TerminateProcess(p._handle, 0)
Try to duplicate the process handle into the terminated process:
>>> source = GetCurrentProcess()
>>> target = handle = p._handle
>>> try:
... DuplicateHandle(source, handle, target,
... 0, False, DUPLICATE_SAME_ACCESS)
... except:
... status = ntdll.RtlGetLastNtStatus()
... print(f'NTSTATUS: {status & (2**32-1):#010x}')
... raise
...
NTSTATUS: 0xc000010a
Traceback (most recent call last):
File "<stdin>", line 2, in <module>
PermissionError: [WinError 5] Access is denied
----------
nosy: +eryksun
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<https://bugs.python.org/issue38263>
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