Skip to content

gh-111178: fix UBSan failures in Modules/_interp*module.c #129779

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
encukou merged 10 commits into from
Feb 17, 2025
+52 −44
Merged

gh-111178: fix UBSan failures in Modules/_interp*module.c #129779

Changes from 1 commit
Commits
Show all changes
10 commits
Select commit Hold shift + click to select a range
be385ff
remove redundant casts in `Modules/_interpchannelsmodule.c`
picnixz Jan 25, 2025
ae33ded
suppress unused return values in `Modules/_interpchannelsmodule.c`
picnixz Jan 25, 2025
712953d
suppress unused return values in `Modules/_interpqueuesmodule.c`
picnixz Jan 25, 2025
7dad552
fix UBSan failures for `XIBufferViewObject`
picnixz Jan 25, 2025
81d2315
suppress unused return values in `Modules/_interpretersmodule.c`
picnixz Jan 25, 2025
baee622
Merge remote-tracking branch 'upstream/main' into fix/ubsan/interp-11…
picnixz Feb 7, 2025
d4483e0
do not use the macro when the type is already checked
picnixz Feb 7, 2025
e2ee75e
fix compilation
picnixz Feb 7, 2025
2794f87
Do not add an underscore to the macro if none is needed.
picnixz Feb 8, 2025
9c6f69c
Do Do not use `_` + capital letter in new code as it is also UB.
picnixz Feb 8, 2025
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
Prev Previous commit
Next Next commit
fix UBSan failures for XIBufferViewObject
  • Loading branch information
@picnixz
picnixz committed Jan 25, 2025
commit 7dad5529e4d6d532f3d0cb957d5b7a7225a2b6fd
14 changes: 9 additions & 5 deletions Modules/_interpretersmodule.c
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -83,6 +83,8 @@ typedef struct {
int64_t interpid;
} XIBufferViewObject;

#define _XIBufferViewObject_CAST(op) ((XIBufferViewObject *)(op))

static PyObject *
xibufferview_from_xid(PyTypeObject *cls, _PyXIData_t *data)
{
Expand All @@ -100,8 +102,9 @@ xibufferview_from_xid(PyTypeObject *cls, _PyXIData_t *data)
}

static void
xibufferview_dealloc(XIBufferViewObject *self)
xibufferview_dealloc(PyObject *op)
{
XIBufferViewObject *self = _XIBufferViewObject_CAST(op);
PyInterpreterState *interp = _PyInterpreterState_LookUpID(self->interpid);
/* If the interpreter is no longer alive then we have problems,
since other objects may be using the buffer still. */
Expand All @@ -124,20 +127,21 @@ xibufferview_dealloc(XIBufferViewObject *self)
}

static int
xibufferview_getbuf(XIBufferViewObject *self, Py_buffer *view, int flags)
xibufferview_getbuf(PyObject *op, Py_buffer *view, int flags)
{
/* Only PyMemoryView_FromObject() should ever call this,
via _memoryview_from_xid() below. */
XIBufferViewObject *self = _XIBufferViewObject_CAST(op);
*view = *self->view;
view->obj = (PyObject *)self;
view->obj = op;
// XXX Should we leave it alone?
view->internal = NULL;
return 0;
}

static PyType_Slot XIBufferViewType_slots[] = {
{Py_tp_dealloc, (destructor)xibufferview_dealloc},
{Py_bf_getbuffer, (getbufferproc)xibufferview_getbuf},
{Py_tp_dealloc, xibufferview_dealloc},
{Py_bf_getbuffer, xibufferview_getbuf},
// We don't bother with Py_bf_releasebuffer since we don't need it.
{0, NULL},
};
Expand Down