!228 bpo-44434: Don't call PyThread_exit_thread() explicitly

From: @ultra_planet 
Reviewed-by: @dillon_chen 
Signed-off-by: @dillon_chen

backport-bpo-44434-Don-t-call-PyThread_exit_thread-explicitly.patch

@@ -0,0 +1,63 @@
+From 83ad40efc3e299d1e94692d958111a63c2fd6775 Mon Sep 17 00:00:00 2001
+From: Victor Stinner <vstinner@python.org>
+Date: Mon, 21 Jun 2021 14:22:56 +0200
+Subject: [PATCH] bpo-44434: Don't call PyThread_exit_thread() explicitly
+ (GH-26758) (GH-26825)
+
+_thread.start_new_thread() no longer calls PyThread_exit_thread()
+explicitly at the thread exit, the call was redundant.
+
+On Linux with the glibc, pthread_cancel() loads dynamically the
+libgcc_s.so.1 library. dlopen() can fail if there is no more
+available file descriptor to open the file. In this case, the process
+aborts with the error message:
+
+"libgcc_s.so.1 must be installed for pthread_cancel to work"
+
+pthread_cancel() unwinds back to the thread's wrapping function that
+calls the thread entry point.
+
+The unwind function is dynamically loaded from the libgcc_s library
+since it is tightly coupled to the C compiler (GCC). The unwinder
+depends on DWARF, the compiler generates DWARF, so the unwinder
+belongs to the compiler.
+
+Thanks Florian Weimer and Carlos O'Donell for their help on
+investigating this issue.
+
+(cherry picked from commit 45a78f906d2d5fe5381d78466b11763fc56d57ba)
+---
+ .../next/Library/2021-06-16-16-52-14.bpo-44434.SQS4Pg.rst    | 4 ++++
+ Modules/_threadmodule.c                                      | 5 ++++-
+ 2 files changed, 8 insertions(+), 1 deletion(-)
+ create mode 100644 Misc/NEWS.d/next/Library/2021-06-16-16-52-14.bpo-44434.SQS4Pg.rst
+
+diff --git a/Misc/NEWS.d/next/Library/2021-06-16-16-52-14.bpo-44434.SQS4Pg.rst b/Misc/NEWS.d/next/Library/2021-06-16-16-52-14.bpo-44434.SQS4Pg.rst
+new file mode 100644
+index 0000000000..37b5b57ce6
+--- /dev/null
++++ b/Misc/NEWS.d/next/Library/2021-06-16-16-52-14.bpo-44434.SQS4Pg.rst
+@@ -0,0 +1,4 @@
++_thread.start_new_thread() no longer calls PyThread_exit_thread() explicitly
++at the thread exit, the call was redundant. On Linux with the glibc,
++pthread_exit() aborts the whole process if dlopen() fails to open
++libgcc_s.so file (ex: EMFILE error). Patch by Victor Stinner.
+diff --git a/Modules/_threadmodule.c b/Modules/_threadmodule.c
+index 77baba4847..a370352238 100644
+--- a/Modules/_threadmodule.c
++++ b/Modules/_threadmodule.c
+@@ -1056,7 +1056,10 @@ t_bootstrap(void *boot_raw)
+     tstate->interp->num_threads--;
+     PyThreadState_Clear(tstate);
+     PyThreadState_DeleteCurrent();
+-    PyThread_exit_thread();
++
++    // bpo-44434: Don't call explicitly PyThread_exit_thread(). On Linux with
++    // the glibc, pthread_exit() can abort the whole process if dlopen() fails
++    // to open the libgcc_s.so library (ex: EMFILE error).
+ }
+ 
+ static PyObject *
+-- 
+2.27.0
+

python3.spec

@@ -3,7 +3,7 @@ Summary: Interpreter of the Python3 programming language
 URL: https://www.python.org/
 
 Version: 3.7.9
-Release: 31
+Release: 32
 License: Python-2.0
 
 %global branchversion 3.7
@@ -165,6 +165,7 @@ Patch6055:  backport-CVE-2021-28861.patch
 Patch6056:  backport-CVE-2020-10735.patch
 Patch6057:  backport-CVE-2022-45061.patch
 Patch6058:  backport-CVE-2022-37454.patch
+Patch6059:  backport-bpo-44434-Don-t-call-PyThread_exit_thread-explicitly.patch
 
 patch9000:  Don-t-override-PYTHONPATH-which-is-already-set.patch
 patch9001:  add-the-sm3-method-for-obtaining-the-salt-value.patch
@@ -317,6 +318,7 @@ rm Lib/ensurepip/_bundled/*.whl
 %patch6056 -p1
 %patch6057 -p1
 %patch6058 -p1
+%patch6059 -p1
 
 %patch9000 -p1
 %patch9001 -p1
@@ -921,6 +923,12 @@ export BEP_GTDLIST="$BEP_GTDLIST_TMP"
 %{_mandir}/*/*
 
 %changelog
+* Sat Dec 17 2022 lingsheng <lingsheng@xfusion.com> - 3.7.9-32
+- Type:bugfix
+- CVE:NA
+- SUG:NA
+- DESC:bpo-44434: Don't call PyThread_exit_thread() explicitly
+
 * Thu Dec 15 2022 zhuofeng<zhuofeng2@huawei.com> - 3.7.9-31
 - Type:bugfix
 - ID:NA