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Pablo Galindo Salgado 65fbec64f6
[3.15] gh-151613: Fix remote debugging frame cache ABA (#152448) 
gh-151613: Fix remote debugging frame cache ABA (#151614)

The remote debugging frame cache previously used only the last_profiled_frame address as its cache anchor. If a frame returned and a later frame reused the same _PyInterpreterFrame address, the profiler could accept a stale cache entry and splice parent frames from a different call chain into the current stack.

This adds a last_profiled_frame_seq counter next to last_profiled_frame, increments it when the anchor advances, stores it in frame cache entries, and validates cache hits against both the frame address and the sequence. Cache miss walks now copy stack chunks before storing new cache entries so stored continuations come from a stable snapshot. The new regression test exercises alternating call chains and checks that cached stacks never contain frames from both branches.

(cherry picked from commit 8cda6ae2f1)
2026-06-27 17:42:31 +00:00
..
abstract.h gh-142217: Deprecate the private _Py_Identifier C API (#142221) 2025-12-12 14:10:25 +01:00
audit.h gh-135755: Use private names (_Py*) for header file guards new in 3.14 (GH-135921) 2025-06-26 13:05:01 +02:00
bytearrayobject.h gh-139871: Add bytearray.take_bytes([n]) to efficiently extract bytes (GH-140128) 2025-11-13 13:19:44 +00:00
bytesobject.h gh-129813, PEP 782: Add PyBytesWriter_Format() (#138824) 2025-09-12 14:21:57 +02:00
cellobject.h gh-127271: Replace use of PyCell_GET/SET (gh-127272) 2024-12-03 10:33:06 -08:00
ceval.h GH-126910: Add gdb support for unwinding JIT frames (#146071) 2026-05-02 13:42:03 +00:00
classobject.h gh-89653: PEP 670: Convert macros to functions (#99843) 2022-11-28 16:40:08 +01:00
code.h gh-70030: Remove _PyCode_ConstantKey() function (#139735) 2025-10-08 22:33:45 +02:00
compile.h gh-117411: move PyFutureFeatures to pycore_symtable.h and make it private (#117412) 2024-04-02 10:34:49 +00:00
complexobject.h gh-128813: soft-deprecate _Py_c_*() functions (GH-137261) 2025-08-01 09:40:12 +02:00
context.h gh-124872: Replace enter/exit events with "switched" (#125532) 2024-10-16 13:53:21 +02:00
critical_section.h gh-149225: Expose Py_CriticalSection in Stable ABI (GH-149227) 2026-05-04 17:32:17 +02:00
descrobject.h gh-106320: Move _PyMethodWrapper_Type to internal C API (#107064) 2023-07-22 20:57:59 +00:00
dictobject.h gh-141510, PEP 814: Add built-in frozendict type (#144757) 2026-02-17 10:54:41 +01:00
fileobject.h gh-106320: Remove private _Py_UniversalNewlineFgetsWithSize() (#108602) 2023-08-29 02:36:50 +00:00
fileutils.h gh-128863: Deprecate private C API functions (#128864) 2025-01-22 11:04:19 +00:00
floatobject.h gh-89653: PEP 670: Convert macros to functions (#99843) 2022-11-28 16:40:08 +01:00
frameobject.h gh-74929: Implement PEP 667 (GH-115153) 2024-05-04 12:12:10 +01:00
funcobject.h gh-139924: Add PyFunction_PYFUNC_EVENT_MODIFY_QUALNAME event for function watchers (#139925) 2025-10-10 15:25:38 -07:00
genobject.h gh-120834: fix type of *_iframe field in _PyGenObject_HEAD declaration (#120835) 2024-06-24 10:23:38 +01:00
import.h gh-116146: Add C-API to create module from spec and initfunc (GH-139196) 2025-11-14 10:43:25 +01:00
initconfig.h gh-142349: Implement PEP 810 - Explicit lazy imports (#142351) 2026-02-12 00:15:33 +00:00
listobject.h gh-112087: Make list_repr and list_length to be thread-safe (gh-114582) 2024-01-27 01:20:21 +09:00
longintrepr.h gh-147988: Initialize digits in long_alloc() in debug mode (#147989) 2026-04-02 11:55:34 +00:00
longobject.h gh-132639: Adds PyLong_AsNativeBytes, PyLong_FromNativeBytes and PyLong_FromUnsignedNativeBytes to the limited API (GH-132640) 2025-04-21 15:59:03 +01:00
marshal.h gh-141510: Change marshal version to 6 (#145551) 2026-03-06 10:23:11 +01:00
memoryobject.h gh-106320: Remove private _PyManagedBuffer_Type (#108431) 2023-08-24 19:07:54 +02:00
methodobject.h gh-87347: Add parenthesis around PyXXX_Check() arguments (#92815) 2022-06-16 13:49:43 +02:00
modsupport.h gh-128341: Use _Py_ABI_SLOT in stdlib modules (#145770) 2026-03-24 17:47:55 +00:00
monitoring.h gh-142186: Revert the unintended value change in the PY_MONITORING_EVENT_* values from gh-146182 (gh-148955) 2026-04-25 09:05:03 +02:00
object.h GH-143732: SEND specialization (GH-148963) 2026-05-05 15:19:16 +01:00
objimpl.h gh-102013: Move PyUnstable_GC_VisitObjects() to Include/cpython/objimpl.h (#115560) 2024-02-16 15:49:13 +01:00
odictobject.h gh-87347: Add parenthesis around macro arguments (#93915) 2022-06-20 16:04:52 +02:00
picklebufobject.h gh-87347: Add parenthesis around PyXXX_Check() arguments (#92815) 2022-06-16 13:49:43 +02:00
pthread_stubs.h GH-110829: Ensure Thread.join() joins the OS thread (#110848) 2023-11-04 13:59:24 +00:00
pyatomic.h gh-146227: Fix wrong type in _Py_atomic_load_uint16 in pyatomic_std.h (gh-146229) 2026-03-20 15:38:35 -04:00
pyatomic_gcc.h gh-146227: Fix wrong type in _Py_atomic_load_uint16 in pyatomic_std.h (gh-146229) 2026-03-20 15:38:35 -04:00
pyatomic_msc.h gh-146227: Fix wrong type in _Py_atomic_load_uint16 in pyatomic_std.h (gh-146229) 2026-03-20 15:38:35 -04:00
pyatomic_std.h gh-146227: Fix wrong type in _Py_atomic_load_uint16 in pyatomic_std.h (gh-146229) 2026-03-20 15:38:35 -04:00
pyctype.h bpo-43816: Add extern "C" to Include/cpython/pyctype.h (GH-25365) 2021-04-13 13:27:21 +02:00
pydebug.h gh-77782: Deprecate global configuration variable (#93943) 2022-06-17 16:12:00 +02:00
pyerrors.h gh-141732: Fix ExceptionGroup repr changing when original exception sequence is mutated (#141736) 2025-12-07 21:04:04 +00:00
pyfpe.h bpo-35134: Move non-limited C API files to Include/cpython/ (GH-24561) 2021-02-19 15:55:46 +01:00
pyframe.h Fix typos in comments (#120188) 2024-06-07 10:19:41 +02:00
pyhash.h gh-111389: replace deprecated occurrences of _PyHASH_* macros (#141236) 2025-11-09 15:14:08 +01:00
pylifecycle.h gh-142417: Restore private _Py_InitializeMain() function (#145472) 2026-03-04 11:00:08 +01:00
pylock.h gh-79315: Remove Include/pylock.h and Include/monitoring.h (#139731) 2025-10-08 00:49:24 +02:00
pymem.h gh-90815: Add mimalloc memory allocator (#109914) 2023-10-30 15:43:11 +00:00
pystate.h [3.15] gh-151613: Fix remote debugging frame cache ABA (#152448) 2026-06-27 17:42:31 +00:00
pystats.h gh-146073: Add fitness/exit quality mechanism for JIT trace frontend (GH-148089) 2026-04-24 10:37:01 +01:00
pythonrun.h gh-106320: Remove private pythonrun API (#108599) 2023-08-29 04:18:52 +02:00
pythread.h gh-129296: Fix pyatomic.h include paths (#129320) 2025-01-29 15:06:19 +00:00
pytime.h gh-110850: Add PyTime_TimeRaw() function (#118394) 2024-05-01 18:05:01 +00:00
sentinelobject.h [3.15] gh-148829: Make sentinels' repr and module customizable (GH-149654) (#150092) 2026-05-22 07:44:34 -07:00
setobject.h gh-112069: Make PySet_GET_SIZE to be atomic safe. (gh-118053) 2024-04-19 06:40:28 +09:00
sliceobject.h [3.15] gh-149685: Use the _Py prefix for private C macros (GH-149686) (GH-149790) 2026-05-13 23:29:08 +02:00
structseq.h [3.15] gh-149685: Use the _Py prefix for private C macros (GH-149686) (GH-149790) 2026-05-13 23:29:08 +02:00
traceback.h gh-145559: Add PyUnstable_DumpTraceback() and PyUnstable_DumpTracebackThreads() (#148145) 2026-05-06 15:01:12 +00:00
tracemalloc.h Add extern "C" around PyTraceMalloc_ functions. (#127772) 2024-12-11 10:27:07 +01:00
tupleobject.h gh-111489: Add PyTuple_FromArray() function (#139691) 2025-10-10 08:54:12 +02:00
unicodeobject.h gh-146143: Fix the PyUnicodeWriter_WriteUCS4() signature (GH-146144) 2026-03-19 08:23:01 +00:00
warnings.h gh-139640: Fix swallowing syntax warnings in different modules (GH-139755) 2025-10-14 17:48:09 +03:00
weakrefobject.h gh-133644: remove PyWeakref_GetObject and PyWeakref_GET_OBJECT (GH-133657) 2025-09-24 11:25:56 +02:00