From 039714d00f147be4d018fa6aeaf174aad7e8fa32 Mon Sep 17 00:00:00 2001 From: gaogaotiantian Date: Sat, 18 Mar 2023 03:59:21 -0700 Subject: gh-101975: Fixed a potential SegFault on garbage collection (GH-102803) --- .../Core and Builtins/2023-03-18-02-36-39.gh-issue-101975.HwMR1d.rst | 1 + Python/ceval_macros.h | 1 + 2 files changed, 2 insertions(+) create mode 100644 Misc/NEWS.d/next/Core and Builtins/2023-03-18-02-36-39.gh-issue-101975.HwMR1d.rst diff --git a/Misc/NEWS.d/next/Core and Builtins/2023-03-18-02-36-39.gh-issue-101975.HwMR1d.rst b/Misc/NEWS.d/next/Core and Builtins/2023-03-18-02-36-39.gh-issue-101975.HwMR1d.rst new file mode 100644 index 0000000..28c9a84 --- /dev/null +++ b/Misc/NEWS.d/next/Core and Builtins/2023-03-18-02-36-39.gh-issue-101975.HwMR1d.rst @@ -0,0 +1 @@ +Fixed ``stacktop`` value on tracing entries to avoid corruption on garbage collection. diff --git a/Python/ceval_macros.h b/Python/ceval_macros.h index 98b72ec..c225751 100644 --- a/Python/ceval_macros.h +++ b/Python/ceval_macros.h @@ -310,6 +310,7 @@ GETITEM(PyObject *v, Py_ssize_t i) { _PyFrame_SetStackPointer(frame, stack_pointer); \ int err = trace_function_entry(tstate, frame); \ stack_pointer = _PyFrame_GetStackPointer(frame); \ + frame->stacktop = -1; \ if (err) { \ goto error; \ } \ -- cgit v0.12