From: Pablo Galindo <Pablogsal@gmail.com>
Date: Sat, 5 Jun 2021 22:41:11 +0000 (+0100)
Subject: bpo-44304: Ensure the sqlite3 destructor callback is always called with the GIL held... 
X-Git-Tag: v3.11.0a1~934
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=6e3b7cf3af3ed7758b2c2193c1d393feb8ab8f72;p=thirdparty%2FPython%2Fcpython.git

bpo-44304: Ensure the sqlite3 destructor callback is always called with the GIL held (GH-26551)
---

diff --git a/Modules/_sqlite/connection.c b/Modules/_sqlite/connection.c
index c2f3bc0f2012..fbee1b7ce52a 100644
--- a/Modules/_sqlite/connection.c
+++ b/Modules/_sqlite/connection.c
@@ -825,7 +825,12 @@ static void _pysqlite_drop_unused_cursor_references(pysqlite_Connection* self)
 
 static void _destructor(void* args)
 {
+    // This function may be called without the GIL held, so we need to ensure
+    // that we destroy 'args' with the GIL
+    PyGILState_STATE gstate;
+    gstate = PyGILState_Ensure();
     Py_DECREF((PyObject*)args);
+    PyGILState_Release(gstate);
 }
 
 /*[clinic input]
diff --git a/Modules/_sqlite/statement.c b/Modules/_sqlite/statement.c
index c9dd88294532..f12ef67d261c 100644
--- a/Modules/_sqlite/statement.c
+++ b/Modules/_sqlite/statement.c
@@ -404,7 +404,9 @@ stmt_dealloc(pysqlite_Statement *self)
         PyObject_ClearWeakRefs((PyObject*)self);
     }
     if (self->st) {
+        Py_BEGIN_ALLOW_THREADS
         sqlite3_finalize(self->st);
+        Py_END_ALLOW_THREADS
         self->st = 0;
     }
     tp->tp_clear((PyObject *)self);