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bpo-32710: Fix leak in Overlapped_WSASend() (GH-11469)

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Fix a memory leak in asyncio in the ProactorEventLoop when ReadFile()
or WSASend() overlapped operation fail immediately: release the
internal buffer.
This commit is contained in:
Victor Stinner 2019-01-08 14:23:09 +01:00 • committed by GitHub
parent 872bd2b57c
commit a234e14839
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2 changed files with 5 additions and 0 deletions
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3
Misc/NEWS.d/next/Library/2019-01-08-14-00-52.bpo-32710.Sn5Ujj.rst Normal file
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@ -0,0 +1,3 @@
Fix a memory leak in asyncio in the ProactorEventLoop when ``ReadFile()`` or
``WSASend()`` overlapped operation fail immediately: release the internal
buffer.

2
Modules/overlapped.c
View file

@ -723,6 +723,7 @@ do_ReadFile(OverlappedObject *self, HANDLE handle,
case ERROR_IO_PENDING:
Py_RETURN_NONE;
default:
PyBuffer_Release(&self->user_buffer);
self->type = TYPE_NOT_STARTED;
return SetFromWindowsErr(err);
}
@ -1011,6 +1012,7 @@ Overlapped_WSASend(OverlappedObject *self, PyObject *args)
case ERROR_IO_PENDING:
Py_RETURN_NONE;
default:
PyBuffer_Release(&self->user_buffer);
self->type = TYPE_NOT_STARTED;
return SetFromWindowsErr(err);
}