[3.11] gh-101975: Fixed a potential SegFault on garbage collection (G…

…H-102803) (GH-102807) Authored-by: gaogaotiantian <gaogaotiantian@hotmail.com>
python · Mar 20, 2023 · d149f15 · d149f15
1 parent 9883356
commit d149f15
Show file tree

Hide file tree

Showing 2 changed files with 2 additions and 0 deletions.
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
@@ -0,0 +1 @@
+Fixed ``stacktop`` value on tracing entries to avoid corruption on garbage collection.
diff --git a/Python/ceval.c b/Python/ceval.c
@@ -1536,6 +1536,7 @@ eval_frame_handle_pending(PyThreadState *tstate)
         _PyFrame_SetStackPointer(frame, stack_pointer); \
         int err = trace_function_entry(tstate, frame); \
         stack_pointer = _PyFrame_GetStackPointer(frame); \
+        frame->stacktop = -1; \
         if (err) { \
             goto error; \
         } \