https://github.com/python/cpython/commit/94a75f74a13a11b4025c02612c47f61dec0a7398
commit: 94a75f74a13a11b4025c02612c47f61dec0a7398
branch: main
author: Abdul Mohammad <[email protected]>
committer: kumaraditya303 <[email protected]>
date: 2026-08-16T08:42:24+05:30
summary:
gh-155504: Set the interpreter before fallible thread state initialization
(#155590)
files:
A
Misc/NEWS.d/next/Core_and_Builtins/2026-08-11-13-50-35.gh-issue-155504.PsTqZm.rst
M Python/pystate.c
diff --git
a/Misc/NEWS.d/next/Core_and_Builtins/2026-08-11-13-50-35.gh-issue-155504.PsTqZm.rst
b/Misc/NEWS.d/next/Core_and_Builtins/2026-08-11-13-50-35.gh-issue-155504.PsTqZm.rst
new file mode 100644
index 000000000000000..e042bf3554e6f05
--- /dev/null
+++
b/Misc/NEWS.d/next/Core_and_Builtins/2026-08-11-13-50-35.gh-issue-155504.PsTqZm.rst
@@ -0,0 +1,2 @@
+Fix a crash when thread state creation fails before the thread state is fully
+initialized.
diff --git a/Python/pystate.c b/Python/pystate.c
index 646c157007d4ac1..6b0d6a7a372c926 100644
--- a/Python/pystate.c
+++ b/Python/pystate.c
@@ -1508,6 +1508,8 @@ alloc_threadstate(PyInterpreterState *interp)
}
reset_threadstate(tstate);
}
+ // Set the interpreter before any later initialization can fail.
+ tstate->base.interp = interp;
return tstate;
}
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