diff options
Diffstat (limited to 'poky/meta/recipes-devtools/python/python3/0001-gh-92036-Fix-gc_fini_untrack-GH-92037.patch')
| -rw-r--r-- | poky/meta/recipes-devtools/python/python3/0001-gh-92036-Fix-gc_fini_untrack-GH-92037.patch | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/poky/meta/recipes-devtools/python/python3/0001-gh-92036-Fix-gc_fini_untrack-GH-92037.patch b/poky/meta/recipes-devtools/python/python3/0001-gh-92036-Fix-gc_fini_untrack-GH-92037.patch new file mode 100644 index 0000000000..6a58c35cc6 --- /dev/null +++ b/poky/meta/recipes-devtools/python/python3/0001-gh-92036-Fix-gc_fini_untrack-GH-92037.patch @@ -0,0 +1,54 @@ +From 178a238f25ab8aff7689d7a09d66dc1583ecd6cb Mon Sep 17 00:00:00 2001 +From: "Miss Islington (bot)" + <31488909+miss-islington@users.noreply.github.com> +Date: Wed, 4 May 2022 03:23:29 -0700 +Subject: [PATCH 01/40] gh-92036: Fix gc_fini_untrack() (GH-92037) + +Fix a crash in subinterpreters related to the garbage collector. When +a subinterpreter is deleted, untrack all objects tracked by its GC. +To prevent a crash in deallocator functions expecting objects to be +tracked by the GC, leak a strong reference to these objects on +purpose, so they are never deleted and their deallocator functions +are not called. +(cherry picked from commit 14243369b5f80613628a565c224bba7fb3fcacd8) + +Co-authored-by: Victor Stinner <vstinner@python.org> + +Upstream-Status: Backport +--- + .../2022-04-28-23-37-30.gh-issue-92036.GZJAC9.rst | 5 +++++ + Modules/gcmodule.c | 6 ++++++ + 2 files changed, 11 insertions(+) + create mode 100644 Misc/NEWS.d/next/Core and Builtins/2022-04-28-23-37-30.gh-issue-92036.GZJAC9.rst + +diff --git a/Misc/NEWS.d/next/Core and Builtins/2022-04-28-23-37-30.gh-issue-92036.GZJAC9.rst b/Misc/NEWS.d/next/Core and Builtins/2022-04-28-23-37-30.gh-issue-92036.GZJAC9.rst +new file mode 100644 +index 0000000000..78094c5e4f +--- /dev/null ++++ b/Misc/NEWS.d/next/Core and Builtins/2022-04-28-23-37-30.gh-issue-92036.GZJAC9.rst +@@ -0,0 +1,5 @@ ++Fix a crash in subinterpreters related to the garbage collector. When a ++subinterpreter is deleted, untrack all objects tracked by its GC. To prevent a ++crash in deallocator functions expecting objects to be tracked by the GC, leak ++a strong reference to these objects on purpose, so they are never deleted and ++their deallocator functions are not called. Patch by Victor Stinner. +diff --git a/Modules/gcmodule.c b/Modules/gcmodule.c +index 805a159d53..43ae6fa98b 100644 +--- a/Modules/gcmodule.c ++++ b/Modules/gcmodule.c +@@ -2170,6 +2170,12 @@ gc_fini_untrack(PyGC_Head *list) + for (gc = GC_NEXT(list); gc != list; gc = GC_NEXT(list)) { + PyObject *op = FROM_GC(gc); + _PyObject_GC_UNTRACK(op); ++ // gh-92036: If a deallocator function expect the object to be tracked ++ // by the GC (ex: func_dealloc()), it can crash if called on an object ++ // which is no longer tracked by the GC. Leak one strong reference on ++ // purpose so the object is never deleted and its deallocator is not ++ // called. ++ Py_INCREF(op); + } + } + +-- +2.25.1 + |