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Deadlock Assertion failure at Python/lock.c:128: PyLockStatus _PyMutex_LockTimed(PyMutex *, PyTime_t, _PyLockFlags): `Assertion '_Py_atomic_load_uint8_relaxed(&m->_bits) & _Py_LOCKED' failed`

2

# Bug report ### Bug description: ```python import threading import unittest class SimpleLock: def __init__(self, name=None): self._lock = threading.Lock() def acquire(self, blocking=True, timeout=+1): if timeout is None or timeout ==...

YuanchengJiang

test_half_float in test_struct fails on mips

5

# Bug report ### Bug description: ```python test test_struct failed -- Traceback (most recent call last): File "/usr/lib/python3.14/test/test_struct.py", line 946, in test_half_float self.assertEqual(packed[1] & 0x7e, expected) ~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^ AssertionError: 124 !=...

chenx97

gh-143429: Skip NaN encoding assertions for MIPS

2

### Description This PR skips some NaN encoding tests in Lib/test/test_struct.py for the MIPS architecture. `math.nan` depends on toolchain settings for a MIPS build, as setting `-mnan=legacy` and `-mnan=2008` result...

chenx97

Python 3.14 stack overflow detection is incompatible with C++ Boost make_fcontext() coroutines

29

Python 3.14 introduced a new stack overflow detection mecanism: [InternalDocs/stack_protection.md](https://github.com/python/cpython/blob/main/InternalDocs/stack_protection.md) (#130396). The KiCad application uses C++ Boost `make_fcontext()` coroutines which runs coroutine in **their own stack**. Code example from [fcontext...

vstinner

[3.13] gh-143309: fix UAF in `os.execve` when the environment is concurrently mutated (GH-143314)

1

(cherry picked from commit 9609574e7fd36edfaa8b575558a82cc14e65bfbc) (cherry picked from commit c99f7667436d8978b4077704333e2a351f2a026f) * Issue: gh-143309

picnixz

`_FREE_THREADED_BUILD` mis-detected when Py_GIL_DISABLED is defined but set to 0

1

# Bug report ### Bug description: I found an issue related to free-threaded build detection in `Lib/profiling/sampling/sample.py`. ``` python _FREE_THREADED_BUILD = sysconfig.get_config_var("Py_GIL_DISABLED") is not None ``` I am running a...

hyongtao-code

`Path.write_text` does not check whether LF is preceded by CR before converting it to CRLF on windows, resulting in CRCRLF

3

# Bug report ### Bug description: ```python from pathlib import Path path = Path("foo.txt") path.write_text("foo\r\nbar") print(path.read_bytes()) # b'foo\r\r\nbar' ``` i know i can workaround this behavior by passing `newline=""` to...

DetachHead

[3.10] gh-119451: Fix a potential denial of service in http.client (GH-119454)

1

Reading the whole body of the HTTP response could cause OOM if the Content-Length value is too large even if the server does not send a large amount of data....

miss-islington

gh-143423: Fix free-threaded build detection in sampling profiler

2

### Description This PR corrects a logic error in `Lib/profiling/sampling/sample.py` where `_FREE_THREADED_BUILD` was incorrectly evaluated as `True` on Windows non-free-threaded builds when `Py_GIL_DISABLED` was explicitly set to `0`. The detection...

DCchoudhury15

gh-143008: fix TextIOWrapper.truncate via re-entrant flush

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This patch fix all re-entrant flush problem by adding an attr flushing and. refactor the file check to `_textiowrapper_flush` * Issue: gh-143008 all crash problem in 143008 can be fix...

yihong0618