* [3.15] gh-153364: Make frame, coroutine, and task-waiter chain walks iterative and bounded (GH-153365) (#158813)
gh-153364: Make frame, coroutine, and task-waiter chain walks iterative and bounded (GH-153365)
* let me declare single limit
* use our new limit in process_frame_chain()
* add it in parse_async_frame_chain()
* parse_coro_chain()
* NEWS
* async in the message?
* test
* no race
* process_task_awaited_by
* process_task_awaited_by limit test
* NEWS
* MAX_TASK_WAITER_CHAIN_DEPTH
* TASK_WAITER_CHAIN_DEPTH in test
* TASK_WAITER_CHAIN_DEPTH 256
* prevent the drift with the comment
* better naming, better style
* MAX_TASK_WAITER_CHAIN_DEPTH comment
* task-waiter iterative bfs walk
* iterative coro-walk
* nicer news
* 1 << 14
* comment
* unused read_Py_ssize_t
* fix tombstones
* simplify
* correct msg
* better test
* news for tombstones
* left-over from when testing buggy version
* redundant new line
(cherry picked from commit e0861c6ae7)
Co-authored-by: Maurycy Pawłowski-Wieroński <maurycy@maurycy.com>
(cherry picked from commit 9e401cf7f5)
* [3.15] gh-155811: Add a seqcount to `gc_stats` to prevent torn reads (GH-155828) (#158829)
* update_seq
* no need for XCHGL, MOVL is enough?
* gh-155811: Retry an inconsistent GC snapshot once
---------
(cherry picked from commit 5fecd448bb)
Co-authored-by: Pablo Galindo Salgado <Pablogsal@gmail.com>
Co-authored-by: Claude Fable 5.1 <noreply@anthropic.com>
(cherry picked from commit 028124039c)
* [3.15] gh-151292: `_remote_debugging`: Do not corrupt the binary file when hitting `OverflowError` (GH-152892) (#158830)
gh-151292: `_remote_debugging`: Do not corrupt the binary file when hitting `OverflowError` (GH-152892)
* the kolektor
* test
* better test
* news
* =Q, move const to the base, not self.running
* gh-151292: Track binary writer finalization state
---------
(cherry picked from commit f839c061d3)
Co-authored-by: Maurycy Pawłowski-Wieroński <maurycy@maurycy.com>
Co-authored-by: Pablo Galindo Salgado <Pablogsal@gmail.com>
(cherry picked from commit 8a7c23f316)
* [3.15] gh-158583: Fix uninitialized memory read in bytes.fromhex() (GH-158584) (#158691)
gh-158583: Fix uninitialized memory read in bytes.fromhex() (GH-158584)
(cherry picked from commit 9d22a5334b)
Co-authored-by: Victor Stinner <vstinner@python.org>
(cherry picked from commit 4f7af46e25)
* [3.15] gh-154194: Degrade frames in Tachyon instead of failing the sample (GH-154195) (#158831)
* gh-154194: Degrade frames in Tachyon instead of failing the sample (#154195)
* degrade gracefully
* news
* better NEWS wording
* do not raise on MAX_REMOTE_STR_READ
* bye MAX_REMOTE_STR_READ
* fix -m asyncio ps|pstree
* test truncation and linetable sentinel
* simpler
* simpler
* redundant now
* respect #157790 in the news
---------
Co-authored-by: Pablo Galindo Salgado <Pablogsal@gmail.com>
(cherry picked from commit 7d25916b41)
* Preserve the stable ABI when creating fallback frame names
---------
Co-authored-by: Maurycy Pawłowski-Wieroński <maurycy@maurycy.com>
(cherry picked from commit c27f494061)
* [3.15] Add MSan to CI (GH-158625) (#158832)
Run a job that the test suite with MSan to the CI (#158625)
* Run the test suite with MSan in CI
* Additional fixes
* Add `_Py_MSAN_UNPOISON_STRING`
* Apply Victor's suggestions
* Apply Victor's suggestions
---------
(cherry picked from commit b93fb19a6e)
Co-authored-by: Stan Ulbrych <stan@python.org>
Co-authored-by: Victor Stinner <victor.stinner@gmail.com>
(cherry picked from commit 1bc78dea18)
* [3.15] gh-156810: Write the profiler's collapsed-stack export as UTF-8 (GH-156811) (#156814)
gh-156810: Write the profiler's collapsed-stack export as UTF-8 (GH-156811)
(cherry picked from commit c3706f4c68)
Co-authored-by: tonghuaroot (童话) <tonghuaroot@gmail.com>
(cherry picked from commit fce28da9b7)
* [3.15] gh-158552: Wait for Windows threads to suspend before blocking sampling (GH-158802) (#158845)
gh-158552: Wait for Windows threads to suspend before blocking sampling (GH-158802)
* gh-158552: Wait for Windows threads to suspend before blocking sampling
* Use a named Windows thread enumeration status constant
(cherry picked from commit 1643525f0f)
Co-authored-by: Pablo Galindo Salgado <Pablogsal@gmail.com>
(cherry picked from commit 31288da21d)
* [3.15] gh-152721: Fix quadratic RLE replay time in the profiling binary reader (GH-152722) (#158850)
Backport of GH-152722.
Co-authored-by: tonghuaroot <tonghuaroot@gmail.com>
(cherry picked from commit ebaca2ac2d)
* [3.15] gh-156545: Fix flamegraph export RecursionError on deeply recursive programs (GH-156546) (#158851)
Backport of GH-156546.
Co-authored-by: tonghuaroot (童话) <tonghuaroot@gmail.com>
(cherry picked from commit 0ac7217040)
* [3.15] gh-158540: Add the profiled script's directory to sys.path (GH-158548) (#158844)
gh-158540: Add the profiled script's directory to sys.path (GH-158548)
* gh-158540: Add the profiled script's directory to sys.path
When a script is profiled with ``python -m profiling.sampling run
script.py`` from another directory, the script cannot import modules
placed next to it, because ``_sync_coordinator._execute_script()``
executes it with the working directory (added by
``_setup_environment()`` for the module case) as ``sys.path[0]``
instead of the script's own directory.
Make the script's directory importable in ``_execute_script()``,
matching the behavior of ``python script.py``.
Add a regression test that runs the coordinator on a script importing
a sibling module.
* Update _sync_coordinator.py Comment simplified
* gh-158540: Resolve symlinks when adding the script directory to sys.path
``python script.py`` resolves symlinks when computing ``sys.path[0]``, so
a script reached through a symlink (``link.py -> sub/where.py``) imports
modules from the real script's directory. Apply ``os.path.realpath()``
before taking the directory name, and make sure the result is placed at
the front of ``sys.path`` even if it was already listed.
Add a regression test for a symlinked script.
---------
(cherry picked from commit 3f02aab9fa)
Co-authored-by: he_tao <53343436+hetaozdh@users.noreply.github.com>
Co-authored-by: Eduardo Villalpando Mello <eduardo.villalpando.mello@gmail.com>
(cherry picked from commit f52d831397)
* [3.15] gh-153838: Skip non-regular source files in the heatmap exporter (GH-153839) (#158853)
Backport of GH-153839.
Co-authored-by: tonghuaroot <tonghuaroot@gmail.com>
(cherry picked from commit 48998df251)
* [3.15] gh-158539: Fix exception mode missing handlers in generators/coroutines (GH-158581) (#158852)
* [3.15] gh-158539: Fix exception mode missing handlers in generators/coroutines (GH-158581)
Backport of GH-158581.
Co-authored-by: LucasZhou <donghao.zhou@outlook.com>
* [3.15] gh-158539: Use portable static assertion messages
* [3.15] gh-158539: Keep layout assertions with debug-offset validation
* [3.15] gh-158539: Use the platform guard for in-process inspection tests
---------
Co-authored-by: LucasZhou <donghao.zhou@outlook.com>
(cherry picked from commit d625ecbb8d)
* [3.15] gh-158522: Fix truncated stack for a task whose coroutine recurses (GH-158526) (#158870)
Co-authored-by: Timofei Ivankov <128279579+deadlovelll@users.noreply.github.com>
(cherry picked from commit a904b397ed)
* gh-156545, gh-158539: Fix deep flamegraph export on small C stacks and macOS runtime lookup (#158874)
(cherry picked from commit 114de198c0)
Include the C-stack test helper from main, introduced by
ce5ae29ef9, which the regression test
requires but 3.15 does not yet provide.
---------
Co-authored-by: Miss Islington (bot) <31488909+miss-islington@users.noreply.github.com>
Co-authored-by: Maurycy Pawłowski-Wieroński <maurycy@maurycy.com>
Co-authored-by: Claude Fable 5.1 <noreply@anthropic.com>
Co-authored-by: Victor Stinner <vstinner@python.org>
Co-authored-by: Stan Ulbrych <stan@python.org>
Co-authored-by: Victor Stinner <victor.stinner@gmail.com>
Co-authored-by: tonghuaroot (童话) <tonghuaroot@gmail.com>
Co-authored-by: he_tao <53343436+hetaozdh@users.noreply.github.com>
Co-authored-by: Eduardo Villalpando Mello <eduardo.villalpando.mello@gmail.com>
Co-authored-by: LucasZhou <donghao.zhou@outlook.com>
Co-authored-by: Timofei Ivankov <128279579+deadlovelll@users.noreply.github.com>
Run a job that the test suite with MSan to the CI (#158625)
* Run the test suite with MSan in CI
* Additional fixes
* Add `_Py_MSAN_UNPOISON_STRING`
* Apply Victor's suggestions
* Apply Victor's suggestions
---------
(cherry picked from commit b93fb19a6e)
Co-authored-by: Stan Ulbrych <stan@python.org>
Co-authored-by: Victor Stinner <victor.stinner@gmail.com>
The gai_strerror() and hstrerror() messages were decoded as UTF-8, so
gaierror and herror could be replaced with UnicodeDecodeError if the
message is localized and the locale encoding is not UTF-8.
(cherry picked from commit 5afbb60e02)
Co-authored-by: Serhiy Storchaka <storchaka@gmail.com>
Co-authored-by: Claude Fable 5 <noreply@anthropic.com>
gh-143988: Fix re-entrant mutation crashes in socket sendmsg/recvmsg_into (GH-143987)
Fix crashes in socket.sendmsg() and socket.recvmsg_into() that could
occur if buffer sequences are mutated re-entrantly during argument
parsing via __buffer__ protocol callbacks.
The bug occurs because:
1. PySequence_Fast() returns the original list object when the input
is already a list (not a copy).
2. During iteration, PyObject_GetBuffer() triggers __buffer__
callbacks which may clear the list.
3. Subsequent iterations access invalid memory (heap OOB read).
The fix replaces PySequence_Fast() with PySequence_Tuple() which
always creates a new tuple, ensuring the sequence cannot be mutated
during iteration.
(cherry picked from commit 896f7fdc7d)
Co-authored-by: tonghuaroot (童话) <tonghuaroot@gmail.com>
Co-authored-by: tonghuaroot <23011166+tonghuaroot@users.noreply.github.com>
Rename from _Py_INTERNAL_ABI_SLOT to _Py_ABI_SLOT
and define the macro using _PyABIInfo_DEFAULT.
Use the ABI slot in stdlib extension modules to enable running
a check of ABI version compatibility.
_tkinter, _tracemalloc and readline don't use the slots, hence they need
explicit handling.
Co-authored-by: Victor Stinner <vstinner@python.org>
Functions that take timestamp or timeout arguments now accept any
real numbers (such as Decimal and Fraction), not only integers or floats,
although this does not improve precision.
ntohl(), htonl(), if_indextoname(), getaddrinfo() now use __index__() if
available.
Also fix the Argument Clinic names for module-level functions (although
this does not affect the user).
Previously only an integer packed in a tuple was accepted, while
getsockname() could return a raw integer.
Now the result of getsockname() is always acceptable as an address.
Now all protocols always accept the Bluetooth address as string and
getsockname() always returns the Bluetooth address as string.
* BTPROTO_SCO now accepts not only bytes, but str.
* BTPROTO_SCO now checks address for embedded null.
* On *BSD, BTPROTO_HCI now accepts str instead of bytes.
* On FreeBSD, getsockname() for BTPROTO_HCI now returns str instead of bytes.
* On NetBSD and DragonFly BDS, BTPROTO_HCI now checks address for embedded null.
* Also add support for cid and bdaddr_type in the BTPROTO_L2CAP address on FreeBSD.
* Return cid in getsockname() for BTPROTO_L2CAP if it is not zero.
* Fix a compiler warning on FreeBSD.
Don't pass direct references to sockaddr members since their type may
not match PyArg_ParseTuple() types. Instead, use temporary 'int' and
'unsigned char' variables, and update sockaddr members afterwards.
On FreeBSD, treat BTPROTO_HCI node name as a bytes string,
not as an integer.
Stan Ulbrych