From 280914cd46f4411a2e01150bf9d9c53dff19fa66 Mon Sep 17 00:00:00 2001 From: shadchin Date: Wed, 24 Jun 2026 07:09:14 +0300 Subject: Update Python 3 to 3.13.14 commit_hash:9913a0288f56b5ddd0f99e5b2ff1569d491cbe5d --- contrib/tools/python3/Python/lock.c | 11 ++++++++++- 1 file changed, 10 insertions(+), 1 deletion(-) (limited to 'contrib/tools/python3/Python/lock.c') diff --git a/contrib/tools/python3/Python/lock.c b/contrib/tools/python3/Python/lock.c index 24c404a1246..6def8567b11 100644 --- a/contrib/tools/python3/Python/lock.c +++ b/contrib/tools/python3/Python/lock.c @@ -210,7 +210,16 @@ _PyRawMutex_LockSlow(_PyRawMutex *m) // Wait for us to be woken up. Note that we still have to lock the // mutex ourselves: it is NOT handed off to us. - _PySemaphore_Wait(&waiter.sema, -1, /*detach=*/0); + // + // Loop until we observe an actual wakeup. A return of Py_PARK_INTR + // could otherwise let us exit _PySemaphore_Wait and destroy + // `waiter.sema` while _PyRawMutex_UnlockSlow's matching + // _PySemaphore_Wakeup is still pending, since the unlocker has + // already CAS-removed us from the waiter list without any handshake. + int res; + do { + res = _PySemaphore_Wait(&waiter.sema, -1, /*detach=*/0); + } while (res != Py_PARK_OK); } _PySemaphore_Destroy(&waiter.sema); -- cgit v1.3