https://github.com/python/cpython/commit/1d74300f9f69b93045e333401e1cc4d5b7aac741
commit: 1d74300f9f69b93045e333401e1cc4d5b7aac741
branch: 3.13
author: sobolevn <[email protected]>
committer: sobolevn <[email protected]>
date: 2026-06-11T13:31:10Z
summary:
[3.13] gh-151126: Fix missing memory errors in `_interpchannelsmodule.c`
(GH-151239) (#151338)
(cherry picked from commit 9fd1a125bc0ebdc26eae684da6e48ef24ee23b34)
files:
A
Misc/NEWS.d/next/Core_and_Builtins/2026-06-09-10-28-30.gh-issue-151126.DKa6Sl.rst
M Modules/_interpchannelsmodule.c
diff --git
a/Misc/NEWS.d/next/Core_and_Builtins/2026-06-09-10-28-30.gh-issue-151126.DKa6Sl.rst
b/Misc/NEWS.d/next/Core_and_Builtins/2026-06-09-10-28-30.gh-issue-151126.DKa6Sl.rst
new file mode 100644
index 000000000000000..c91939dbe559cd5
--- /dev/null
+++
b/Misc/NEWS.d/next/Core_and_Builtins/2026-06-09-10-28-30.gh-issue-151126.DKa6Sl.rst
@@ -0,0 +1,4 @@
+Fix a crash, when there's no memory left on a device,
+which happened in :mod:`!_interpchannels` module.
+
+Now it raises proper :exc:`MemoryError` errors.
diff --git a/Modules/_interpchannelsmodule.c b/Modules/_interpchannelsmodule.c
index 4d5099f380714e2..82aaea3b97bb5c2 100644
--- a/Modules/_interpchannelsmodule.c
+++ b/Modules/_interpchannelsmodule.c
@@ -903,7 +903,8 @@ static _channelends *
_channelends_new(void)
{
_channelends *ends = GLOBAL_MALLOC(_channelends);
- if (ends== NULL) {
+ if (ends == NULL) {
+ PyErr_NoMemory();
return NULL;
}
ends->numsendopen = 0;
@@ -1095,6 +1096,7 @@ _channel_new(PyThread_type_lock mutex, int unboundop)
{
_channel_state *chan = GLOBAL_MALLOC(_channel_state);
if (chan == NULL) {
+ PyErr_NoMemory();
return NULL;
}
chan->mutex = mutex;
@@ -1295,6 +1297,7 @@ _channelref_new(int64_t cid, _channel_state *chan)
{
_channelref *ref = GLOBAL_MALLOC(_channelref);
if (ref == NULL) {
+ PyErr_NoMemory();
return NULL;
}
ref->cid = cid;
@@ -1680,6 +1683,7 @@ _channel_set_closing(_channelref *ref, PyThread_type_lock
mutex) {
}
chan->closing = GLOBAL_MALLOC(struct _channel_closing);
if (chan->closing == NULL) {
+ PyErr_NoMemory();
goto done;
}
chan->closing->ref = ref;
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