f3e069a7ab
gh-140025: Fix queue.SimpleQueue.__sizeof__() to return correct size ( #143137 )
2026-01-08 12:40:25 +00:00
05406b221d
gh-142991: socketmodule: fixed getsockaddrlen() for PF_DIVERT socket ( #142993 )
2026-01-06 17:25:29 +01:00
d745b60ef2
gh-143474: Add os.RWF_ATOMIC constant (GH-143475)
2026-01-06 09:35:51 -05:00
dd750b3485
gh-143331: Schedule to remove format "N" for Decimal ( #143372 )
2026-01-06 15:12:05 +02:00
9609574e7f
gh-143309: fix UAF in os.execve when the environment is concurrently mutated ( #143314 )
2026-01-03 23:05:57 +01:00
6c53af18f6
gh-143308: fix UAF when PickleBuffer is concurrently mutated in a callback ( #143312 )
...
Co-authored-by: Aaron Wieczorek <woz@Aarons-MacBook-Pro.local >
Co-authored-by: Bénédikt Tran <10796600+picnixz@users.noreply.github.com >
2026-01-03 23:01:59 +01:00
27434c68f8
gh-138122: Skip threads on EPERM in blocking mode profiler (GH-143368)
...
When using blocking mode in the remote debugging profiler, ptrace calls
to seize threads can fail with EPERM if the thread has exited between
listing and attaching, is in a special kernel state, or is already being
traced. Previously this raised a RuntimeError that was caught by the
Python sampling loop,and retried indefinitely since EPERM is
a persistent condition that will not resolve on its own.
Treat EPERM the same as ESRCH by returning 1 (skip this thread) instead
of -1 (fatal error). This allows profiling to continue with the threads
that can be traced rather than entering an endless retry loop printing
the same error message repeatedly.
2026-01-03 15:37:16 +01:00
abdbe0b807
gh-142615: disallow multiple initializations of asyncio.Task and asyncio.Future ( #142616 )
2026-01-03 13:27:02 +05:30
9712dc1d9e
gh-143310: fix crash in Tcl object conversion with concurrent mutations ( #143321 )
2026-01-02 10:51:05 +01:00
61fc72a4a4
gh-124951: Optimize base64 encode & decode for an easy 2-3x speedup [no SIMD] (GH-143262)
...
Optimize base64 encoding/decoding by eliminating loop-carried dependencies. Key changes:
- Add `base64_encode_trio()` and `base64_decode_quad()` helper functions that process complete groups independently
- Add `base64_encode_fast()` and `base64_decode_fast()` wrappers
- Update `b2a_base64` and `a2b_base64` to use fast path for complete groups
Performance gains (encode/decode speedup vs main, PGO builds):
```
64 bytes 64K 1M
Zen2: 1.2x/1.8x 1.7x/2.8x 1.5x/2.8x
Zen4: 1.2x/1.7x 1.6x/3.0x 1.5x/3.0x [old data, likely faster]
M4: 1.3x/1.9x 2.3x/2.8x 2.4x/2.9x [old data, likely faster]
RPi5-32: 1.2x/1.2x 2.4x/2.4x 2.0x/2.1x
```
Based on my exploratory work done in https://github.com/python/cpython/compare/main...gpshead:cpython:claude/vectorize-base64-c-S7Hku
See PR and issue for further thoughts on sometimes MUCH faster SIMD vectorized versions of this.
2026-01-01 22:03:05 -08:00
7f6c16a956
gh-142830: prevent some crashes when mutating sqlite3 callbacks ( #143245 )
2026-01-01 11:55:05 +01:00
3c4429f65a
gh-135852: Remove out of tree pywin32 dependency for NTEventLogHandler (GH-137860)
...
Add RegisterEventSource(), DeregisterEventSource(), ReportEvent()
and a number of EVENTLOG_* constants to _winapi.
2025-12-31 12:50:50 +02:00
96ab379dca
gh-140795: Keep 'err' in local variable in _ssl.c (gh-143275)
...
The error return code doesn't need to be mutable state on the SSLSocket.
This simplifes thread-safety and avoids potential reentrancy issues.
2025-12-30 19:45:44 -05:00
b6b0e14b3d
gh-143200: fix UAFs in Element.__{set,get}item__ when the element is concurrently mutated ( #143226 )
2025-12-29 18:30:51 +01:00
6cb245d260
gh-143183: Link trace to side exits, rather than stop (GH-143268)
2025-12-29 15:10:42 +00:00
7726119651
gh-138122: fix AC warnings in Modules/_remote_debugging/module.c ( #143218 )
2025-12-27 12:57:03 +00:00
1af21ea320
gh-63016: Add flags parameter on mmap.flush ( #139553 )
...
Co-authored-by: Victor Stinner <vstinner@python.org >
2025-12-27 10:33:56 +00:00
54362898f3
gh-140739: Fix missing exception on allocation failure in BinaryWriter ( #143204 )
2025-12-27 01:39:21 +00:00
d3d4cf9432
gh-140739: Fix crashes from corrupted remote memory ( #143190 )
2025-12-26 16:06:48 +00:00
b9a4806430
gh-143164: Fix incorrect error message for ctypes bitfield overflow (GH-143165)
...
Signed-off-by: Yongtao Huang <yongtaoh2022@gmail.com >
2025-12-25 19:08:43 +02:00
579c5b496b
gh-143145: Fix possible reference leak in ctypes _build_result() (GH-143131)
...
The result tuple was leaked if __ctypes_from_outparam__() failed for any item.
Signed-off-by: Yongtao Huang <yongtaoh2022@gmail.com >
2025-12-25 14:24:25 +00:00
86d904588e
gh-143004: Fix possible use-after-free in collections.Counter.update() (GH-143044)
...
This happened when the Counter was mutated when incrementing
the value for an existing key.
2025-12-25 09:13:39 +00:00
7c44f37170
gh-138122: Extend binary profiling format with full source location and opcode ( #143088 )
...
Co-authored-by: Stan Ulbrych <stan@ulbrych.org >
2025-12-24 16:15:11 +00:00
81c8eb85e1
gh-138122: Add blocking mode for accurate stack traces in Tachyon ( #142998 )
2025-12-23 10:49:47 +00:00
a273bc99d2
gh-122431: Correct the non-negative error message in readline.append_history_file (GH-143075)
...
"positive" -> "non-negative", since zero is included.
2025-12-22 23:35:23 -05:00
9e51301234
gh-138122: Allow tachyon to write and read binary output ( #142730 )
2025-12-22 23:57:20 +00:00
3960878143
Remove unreachable code in mmapmodule error path on Windows (GH-143063)
...
mmapmodule: remove unreachable code in Windows error path
Remove an unreachable `return NULL` after `PyErr_SetFromWindowsErr()` in
the Windows mmap resize error path.
Signed-off-by: Yongtao Huang <yongtaoh2022@gmail.com >
2025-12-22 11:16:50 +01:00
5989095dfd
gh-143012: use Py_ssize_t cast for PyBytes_FromStringAndSize ( #143013 )
2025-12-20 10:37:10 +03:00
14f0b5191a
gh-142419: Add mmap.set_name method for user custom annotation (gh-142480)
2025-12-18 23:33:49 +09:00
77b56eafde
gh-91048: Refactor common data into context object in Modules/_remote_debugging ( #142879 )
2025-12-17 17:43:52 +00:00
7d81eab923
gh-142225: Add PyABIInfo_VAR to to _testcapimodule & _testinternalcapi (GH-142833)
2025-12-17 16:33:09 +01:00
568a819f67
gh-138122: Validate base frame before caching in remote debugging frame cache ( #142852 )
2025-12-17 15:12:28 +00:00
2b466c47c3
gh-112127: Fix possible use-after-free in atexit.unregister() (GH-114092)
...
Co-authored-by: Serhiy Storchaka <storchaka@gmail.com >
2025-12-17 17:09:57 +02:00
8307a14d0e
gh-142783: Fix possible use after free in zoneinfo module (GH-142790)
2025-12-17 08:35:08 +00:00
a043407510
gh-142495: Make defaultdict keep existed value when racing with __missing__ (GH-142668)
2025-12-16 17:04:20 +02:00
15a9762500
gh-142595: Amend be5e0dcded (fix NULL pointer dereference) (GH-142775)
2025-12-16 10:52:20 +02:00
1a9cdaf63a
gh-116738: Make _bz2 module thread-safe (gh-142756)
...
Make the attributes in _bz2 module thread-safe on the free-threading build.
Attributes (eof, needs_input, unused_data) are now stored atomically or
accessed via mutex-protected getters.
2025-12-15 12:47:04 -05:00
1d3854a19a
gh-142594: fix by property calls io.TextIOWrapper.detach (GH-142706)
...
Signed-off-by: yihong0618 <zouzou0208@gmail.com >
2025-12-15 15:13:58 +01:00
6658e2cb07
gh-138122: Add --subprocesses flag to profile child processes in tachyon ( #142636 )
2025-12-15 12:11:40 +00:00
38ad651b67
gh-76007: Deprecate __version__ attribute in ctypes ( #142679 )
2025-12-15 13:30:23 +02:00
fb554ad68d
gh-140414: streamline thread state access in asyncio ( #142742 )
2025-12-15 16:57:51 +05:30
d3ef5ba34d
gh-142451: correctly copy HMAC attributes in HMAC.copy() ( #142510 )
2025-12-14 09:45:36 +01:00
1eddef8193
gh-116738: Make zlib module thread-safe (gh-142432)
...
Makes the zlib module thread-safe free-threading build. Even though operations
are protected by locks, attributes exposed via PyMemberDef (eof, needs_input,
unused_data, unconsumed_tail) should still be stored atomically within locked
sections, since they can be read without acquiring the lock.
2025-12-12 13:14:42 -05:00
be5e0dcded
gh-142595: add type check for namedtuple call during decimal initialization (GH-142608)
2025-12-12 11:47:45 +01:00
6a0135a392
gh-138122: Add exception profiling mode to the sampling profiler ( #142561 )
2025-12-11 20:46:34 +00:00
e38967ed60
gh-142531: Fix free-threaded GC performance regression (gh-142562)
...
If there are many untracked tuples, the GC will run too often, resulting
in poor performance. The fix is to include untracked tuples in the
"long lived" object count. The number of frozen objects is also now
included since the free-threaded GC must scan those too.
2025-12-11 12:30:56 -08:00
a26c831bc4
gh-142589: Fix PyUnstable_Object_IsUniqueReferencedTemporary (gh-142593)
...
PyUnstable_Object_IsUniqueReferencedTemporary wasn't handling tagged
ints on the evaluation stack properly.
2025-12-11 14:41:03 -05:00
8cfa351560
Fix os.posix_spawn() error handling ( #142532 )
...
Consistently use `goto exit;` in `py_posix_spawn()`.
2025-12-11 18:02:26 +01:00
44d3dc6491
gh-142438: Added missing GIL release in _PySSL_keylog_callback when keylog_bio is unset (gh-142439)
2025-12-11 23:30:39 +09:00
42d2bedb87
gh-142556: fix crash when a task gets re-registered during finalization in asyncio ( #142565 )
2025-12-11 15:04:49 +05:30
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