Possible Race condition in sentry-sdk 2.33.2 use_context()

### How do you use Sentry?

Sentry Saas (sentry.io)

### Version

2.33.2

### Steps to Reproduce

Hello 👋 
This is my first bug report in sentry-python. I apologise in advance if I miss any important information.
I checked previous tickets for related issues but I could not identify one for this case.


# What
Segmentation fault in `use_scope(current_scope_to_use).__enter__` method possibly caused by a null pointer exception.

# Where

## Environment
- x86_64 aws linux image in CircleCI
- Python 3.11.9 installed from pyenv with no extra flags
- Also happens with Python 3.11.13 from pyenv with no extra flags

I could not reproduce this issue in local darwin/arm64 environment and does not seem to happen in arm64 production hosts


## More info

We recently migrated from sentry-sdk 1.45 to 2.33. The team followed [this](https://docs.sentry.io/platforms/python/integrations/starlette/#options) migration guide but given that we only use basic features of sentry the changes we have to perform were quite small.

<img width="1439" height="85" alt="Image" src="https://github.com/user-attachments/assets/84ef68cc-e128-4994-990e-a5911eb89739" />



### Expected Result

No segmentation fault error

### Actual Result

Our tests have been randomly failing with the following backtrace extracted from CircleCI

```
tests/integration/<redacted>/test_<redacted>.py::Test<redacted>::<redacted>[<redacted>] Fatal Python error: Segmentation fault

Current thread 0x00007fa47b56b640 (most recent call first):
  File "<redacted>.venv/lib/python3.11/site-packages/sentry_sdk/scope.py", line 1708 in use_scope
  File "/home/circleci/.pyenv/versions/3.11.13/lib/python3.11/contextlib.py", line 137 in __enter__
  File "<redacted>.venv/lib/python3.11/site-packages/sentry_sdk/integrations/threading.py", line 129 in run
  File "/home/circleci/.pyenv/versions/3.11.13/lib/python3.11/threading.py", line 1045 in _bootstrap_inner
  File "/home/circleci/.pyenv/versions/3.11.13/lib/python3.11/threading.py", line 1002 in _bootstrap

Thread 0x00007fa570e62640 (most recent call first):
  File "/home/circleci/.pyenv/versions/3.11.13/lib/python3.11/concurrent/futures/thread.py", line 81 in _worker
  File "/home/circleci/.pyenv/versions/3.11.13/lib/python3.11/threading.py", line 982 in run
  File "<redacted>.venv/lib/python3.11/site-packages/sentry_sdk/integrations/threading.py", line 123 in _run_old_run_func
  File "<redacted>.venv/lib/python3.11/site-packages/sentry_sdk/integrations/threading.py", line 130 in run
  File "/home/circleci/.pyenv/versions/3.11.13/lib/python3.11/threading.py", line 1045 in _bootstrap_inner
  File "/home/circleci/.pyenv/versions/3.11.13/lib/python3.11/threading.py", line 1002 in _bootstrap

Thread 0x00007fa2d39ae640 (most recent call first):
  File "/home/circleci/.pyenv/versions/3.11.13/lib/python3.11/threading.py", line 331 in wait
  File "/home/circleci/.pyenv/versions/3.11.13/lib/python3.11/threading.py", line 629 in wait
  File "<redacted>.venv/lib/python3.11/site-packages/sentry_sdk/sessions.py", line 212 in _thread
  File "/home/circleci/.pyenv/versions/3.11.13/lib/python3.11/threading.py", line 982 in run
  File "<redacted>.venv/lib/python3.11/site-packages/sentry_sdk/integrations/threading.py", line 123 in _run_old_run_func
  File "<redacted>.venv/lib/python3.11/site-packages/sentry_sdk/integrations/threading.py", line 130 in run
  File "/home/circleci/.pyenv/versions/3.11.13/lib/python3.11/threading.py", line 1045 in _bootstrap_inner
  File "/home/circleci/.pyenv/versions/3.11.13/lib/python3.11/threading.py", line 1002 in _bootstrap

Thread 0x00007fa5f2c1eb80 (most recent call first):
  File "/home/circleci/.pyenv/versions/3.11.13/lib/python3.11/selectors.py", line 468 in select
  File "/home/circleci/.pyenv/versions/3.11.13/lib/python3.11/asyncio/base_events.py", line 1898 in _run_once
  File "/home/circleci/.pyenv/versions/3.11.13/lib/python3.11/asyncio/base_events.py", line 608 in run_forever
  File "/home/circleci/.pyenv/versions/3.11.13/lib/python3.11/asyncio/base_events.py", line 641 in run_until_complete
  File "<redacted>.venv/lib/python3.11/site-packages/pytest_asyncio/plugin.py", line 529 in inner
  File "<redacted>.venv/lib/python3.11/site-packages/_pytest/python.py", line 194 in pytest_pyfunc_call
  File "<redacted>.venv/lib/python3.11/site-packages/pluggy/_callers.py", line 121 in _multicall
  File "<redacted>.venv/lib/python3.11/site-packages/pluggy/_manager.py", line 120 in _hookexec
  File "<redacted>.venv/lib/python3.11/site-packages/pluggy/_hooks.py", line 512 in __call__
  File "<redacted>.venv/lib/python3.11/site-packages/_pytest/python.py", line 1792 in runtest
  File "<redacted>.venv/lib/python3.11/site-packages/_pytest/runner.py", line 169 in pytest_runtest_call
  File "<redacted>.venv/lib/python3.11/site-packages/pluggy/_callers.py", line 121 in _multicall
  File "<redacted>.venv/lib/python3.11/site-packages/pluggy/_manager.py", line 120 in _hookexec
  File "<redacted>.venv/lib/python3.11/site-packages/pluggy/_hooks.py", line 512 in __call__
  File "<redacted>.venv/lib/python3.11/site-packages/_pytest/runner.py", line 262 in <lambda>
  File "<redacted>.venv/lib/python3.11/site-packages/_pytest/runner.py", line 341 in from_call
  File "<redacted>.venv/lib/python3.11/site-packages/_pytest/runner.py", line 261 in call_runtest_hook
  File "<redacted>.venv/lib/python3.11/site-packages/_pytest/runner.py", line 222 in call_and_report
  File "<redacted>.venv/lib/python3.11/site-packages/_pytest/runner.py", line 133 in runtestprotocol
  File "<redacted>.venv/lib/python3.11/site-packages/_pytest/runner.py", line 114 in pytest_runtest_protocol
  File "<redacted>.venv/lib/python3.11/site-packages/pluggy/_callers.py", line 121 in _multicall
  File "<redacted>.venv/lib/python3.11/site-packages/pluggy/_manager.py", line 120 in _hookexec
  File "<redacted>.venv/lib/python3.11/site-packages/pluggy/_hooks.py", line 512 in __call__
  File "<redacted>.venv/lib/python3.11/site-packages/_pytest/main.py", line 350 in pytest_runtestloop
  File "<redacted>.venv/lib/python3.11/site-packages/pluggy/_callers.py", line 121 in _multicall
  File "<redacted>.venv/lib/python3.11/site-packages/pluggy/_manager.py", line 120 in _hookexec
  File "<redacted>.venv/lib/python3.11/site-packages/pluggy/_hooks.py", line 512 in __call__
  File "<redacted>.venv/lib/python3.11/site-packages/_pytest/main.py", line 325 in _main
  File "<redacted>.venv/lib/python3.11/site-packages/_pytest/main.py", line 271 in wrap_session
  File "<redacted>.venv/lib/python3.11/site-packages/_pytest/main.py", line 318 in pytest_cmdline_main
  File "<redacted>.venv/lib/python3.11/site-packages/pluggy/_callers.py", line 121 in _multicall
  File "<redacted>.venv/lib/python3.11/site-packages/pluggy/_manager.py", line 120 in _hookexec
  File "<redacted>.venv/lib/python3.11/site-packages/pluggy/_hooks.py", line 512 in __call__
  File "<redacted>.venv/lib/python3.11/site-packages/_pytest/config/__init__.py", line 169 in main
  File "<redacted>.venv/lib/python3.11/site-packages/_pytest/config/__init__.py", line 192 in console_main
  File "<redacted>.venv/bin/pytest", line 8 in <module>

Extension modules: _brotli, charset_normalizer.md, requests.packages.charset_normalizer.md, requests.packages.chardet.md, multidict._multidict, yarl._quoting_c, propcache._helpers_c, aiohttp._http_writer, aiohttp._http_parser, aiohttp._websocket.mask, aiohttp._websocket.reader_c, frozenlist._frozenlist, cython.cimports.libc.math, yaml._yaml, regex._regex, numpy.core._multiarray_umath, numpy.core._multiarray_tests, numpy.linalg._umath_linalg, numpy.fft._pocketfft_internal, numpy.random._common, numpy.random.bit_generator, numpy.random._bounded_integers, numpy.random._mt19937, numpy.random.mtrand, numpy.random._philox, numpy.random._pcg64, numpy.random._sfc64, numpy.random._generator, psutil._psutil_linux, psutil._psutil_posix, ujson, greenlet._greenlet, zope.interface._zope_interface_coptimizations, gevent.libev.corecext, gevent._gevent_c_greenlet_primitives, gevent._gevent_c_hub_local, gevent._gevent_c_waiter, gevent._gevent_c_hub_primitives, gevent._gevent_c_ident, gevent._gevent_cgreenlet, gevent._gevent_c_abstract_linkable, gevent._gevent_cevent, gevent._gevent_c_semaphore, gevent._gevent_cqueue, gevent._gevent_c_imap, editdistpy.damerau_osa, editdistpy.levenshtein, fugashi.fugashi, _cffi_backend, markupsafe._speedups, mmh3, msgpack._cmsgpack, marisa_trie (total: 53)
```

I installed python version into a circleci instance with the following flags 
```
PYTHON_CONFIGURE_OPTS="--enable-shared --with-pydebug" pyenv install 3.11.9
```

and  set `ulimit -c unlimited` and exported `PYTHONFAULTHANDLER=1` to my environment and reproduced the issue to collect a core dump. (If you need it, please let me know how I can share that file without exposing it publicly)

Here is some information collected from the coredump file

### py-bt
```
(gdb) py-bt
Traceback (most recent call first):
  <built-in method set of _contextvars.ContextVar object at remote 0x7f52621992b0>
  File "<redacted>.venv/lib/python3.11/site-packages/sentry_sdk/scope.py", line 1708, in use_scope
    token = _current_scope.set(scope)
  <built-in method next of module object at remote 0x7f52c604f590>
  File "/home/circleci/.pyenv/versions/3.11.9/lib/python3.11/contextlib.py", line 137, in __enter__
    return next(self.gen)
  File "<redacted>.venv/lib/python3.11/site-packages/sentry_sdk/integrations/threading.py", line 129, in run
    with use_scope(current_scope_to_use):
  File "/home/circleci/.pyenv/versions/3.11.9/lib/python3.11/threading.py", line 1045, in _bootstrap_inner
    self.run()
  File "/home/circleci/.pyenv/versions/3.11.9/lib/python3.11/threading.py", line 1002, in _bootstrap
    self._bootstrap_inner()
```

### info threads
```
(gdb) info threads
  Id   Target Id                         Frame
* 1    Thread 0x7f5231bd9640 (LWP 25840) __pthread_kill_implementation (no_tid=0, signo=11, threadid=139990998554176) at ./nptl/pthread_kill.c:44
  2    Thread 0x7f52a9ffd640 (LWP 24890) __futex_abstimed_wait_common64 (private=0, cancel=true, abstime=0x0, op=393, expected=0, futex_word=0x7f52c0a68360 <thread_status+1504>) at ./nptl/futex-internal.c:57
  3    Thread 0x7f527a1ff640 (LWP 24906) __futex_abstimed_wait_common64 (private=0, cancel=true, abstime=0x0, op=393, expected=0, futex_word=0x7f52c0a68b60 <thread_status+3552>) at ./nptl/futex-internal.c:57
  4    Thread 0x7f527cbff640 (LWP 24905) __futex_abstimed_wait_common64 (private=0, cancel=true, abstime=0x0, op=393, expected=0, futex_word=0x7f52c0a68ae0 <thread_status+3424>) at ./nptl/futex-internal.c:57
  5    Thread 0x7f52b4bff640 (LWP 24885) __futex_abstimed_wait_common64 (private=0, cancel=true, abstime=0x0, op=393, expected=0, futex_word=0x7f52c0a680e0 <thread_status+864>) at ./nptl/futex-internal.c:57
  6    Thread 0x7f526a5ff640 (LWP 24912) __futex_abstimed_wait_common64 (private=0, cancel=true, abstime=0x0, op=393, expected=0, futex_word=0x7f52c0a68e60 <thread_status+4320>) at ./nptl/futex-internal.c:57
  7    Thread 0x7f5274dff640 (LWP 24908) __futex_abstimed_wait_common64 (private=0, cancel=true, abstime=0x0, op=393, expected=0, futex_word=0x7f52c0a68c60 <thread_status+3808>) at ./nptl/futex-internal.c:57
  8    Thread 0x7f52aa7fe640 (LWP 24889) __futex_abstimed_wait_common64 (private=0, cancel=true, abstime=0x0, op=393, expected=0, futex_word=0x7f52c0a682e0 <thread_status+1376>) at ./nptl/futex-internal.c:57
  9    Thread 0x7f52b75ff640 (LWP 24884) __futex_abstimed_wait_common64 (private=0, cancel=true, abstime=0x0, op=393, expected=0, futex_word=0x7f52c0a68060 <thread_status+736>) at ./nptl/futex-internal.c:57
  10   Thread 0x7f52aafff640 (LWP 24888) __futex_abstimed_wait_common64 (private=0, cancel=true, abstime=0x0, op=393, expected=0, futex_word=0x7f52c0a68260 <thread_status+1248>) at ./nptl/futex-internal.c:57
  11   Thread 0x7f52b43fe640 (LWP 24886) __futex_abstimed_wait_common64 (private=0, cancel=true, abstime=0x0, op=393, expected=0, futex_word=0x7f52c0a68160 <thread_status+992>) at ./nptl/futex-internal.c:57
  12   Thread 0x7f52963ff640 (LWP 24896) __futex_abstimed_wait_common64 (private=0, cancel=true, abstime=0x0, op=393, expected=0, futex_word=0x7f52c0a68660 <thread_status+2272>) at ./nptl/futex-internal.c:57
  13   Thread 0x7f52bafff640 (LWP 24881) __futex_abstimed_wait_common64 (private=0, cancel=true, abstime=0x0, op=393, expected=0, futex_word=0x7f52c0a67ee0 <thread_status+352>) at ./nptl/futex-internal.c:57
  14   Thread 0x7f52a01ff640 (LWP 24893) __futex_abstimed_wait_common64 (private=0, cancel=true, abstime=0x0, op=393, expected=0, futex_word=0x7f52c0a684e0 <thread_status+1888>) at ./nptl/futex-internal.c:57
  15   Thread 0x7f528e5ff640 (LWP 24899) __futex_abstimed_wait_common64 (private=0, cancel=true, abstime=0x0, op=393, expected=0, futex_word=0x7f52c0a687e0 <thread_status+2656>) at ./nptl/futex-internal.c:57
  16   Thread 0x7f52a2bff640 (LWP 24892) __futex_abstimed_wait_common64 (private=0, cancel=true, abstime=0x0, op=393, expected=0, futex_word=0x7f52c0a68460 <thread_status+1760>) at ./nptl/futex-internal.c:57
  17   Thread 0x7f52ba7fe640 (LWP 24882) __futex_abstimed_wait_common64 (private=0, cancel=true, abstime=0x0, op=393, expected=0, futex_word=0x7f52c0a67f60 <thread_status+480>) at ./nptl/futex-internal.c:57
  18   Thread 0x7f5298dff640 (LWP 24895) __futex_abstimed_wait_common64 (private=0, cancel=true, abstime=0x0, op=393, expected=0, futex_word=0x7f52c0a685e0 <thread_status+2144>) at ./nptl/futex-internal.c:57
  19   Thread 0x7f52bd9fe640 (LWP 24880) __futex_abstimed_wait_common64 (private=0, cancel=true, abstime=0x0, op=393, expected=0, futex_word=0x7f52c0a67e60 <thread_status+224>) at ./nptl/futex-internal.c:57
  20   Thread 0x7f52939ff640 (LWP 24897) __futex_abstimed_wait_common64 (private=0, cancel=true, abstime=0x0, op=393, expected=0, futex_word=0x7f52c0a686e0 <thread_status+2400>) at ./nptl/futex-internal.c:57
  21   Thread 0x7f526f9ff640 (LWP 24910) __futex_abstimed_wait_common64 (private=0, cancel=true, abstime=0x0, op=393, expected=0, futex_word=0x7f52c0a68d60 <thread_status+4064>) at ./nptl/futex-internal.c:57
  22   Thread 0x7f52c639eb80 (LWP 24878) __futex_abstimed_wait_common64 (private=-962446506, cancel=true, abstime=0x7ffee5f42b80, op=137, expected=0, futex_word=0x7f52c6d24f74 <_PyRuntime+436>) at ./nptl/futex-internal.c:57
  23   Thread 0x7f5281fff640 (LWP 24903) __futex_abstimed_wait_common64 (private=0, cancel=true, abstime=0x0, op=393, expected=0, futex_word=0x7f52c0a689e0 <thread_status+3168>) at ./nptl/futex-internal.c:57
  24   Thread 0x7f526cfff640 (LWP 24911) __futex_abstimed_wait_common64 (private=0, cancel=true, abstime=0x0, op=393, expected=0, futex_word=0x7f52c0a68de0 <thread_status+4192>) at ./nptl/futex-internal.c:57
  25   Thread 0x7f52ad9ff640 (LWP 24887) __futex_abstimed_wait_common64 (private=0, cancel=true, abstime=0x0, op=393, expected=0, futex_word=0x7f52c0a681e0 <thread_status+1120>) at ./nptl/futex-internal.c:57
  26   Thread 0x7f52be1ff640 (LWP 24879) __futex_abstimed_wait_common64 (private=0, cancel=true, abstime=0x0, op=393, expected=0, futex_word=0x7f52c0a67de0 <thread_status+96>) at ./nptl/futex-internal.c:57
  27   Thread 0x7f5290fff640 (LWP 24898) __futex_abstimed_wait_common64 (private=0, cancel=true, abstime=0x0, op=393, expected=0, futex_word=0x7f52c0a68760 <thread_status+2528>) at ./nptl/futex-internal.c:57
  28   Thread 0x7f5267bff640 (LWP 24913) __futex_abstimed_wait_common64 (private=0, cancel=true, abstime=0x0, op=393, expected=0, futex_word=0x7f52c0a68ee0 <thread_status+4448>) at ./nptl/futex-internal.c:57
  29   Thread 0x7f52723ff640 (LWP 24909) __futex_abstimed_wait_common64 (private=0, cancel=true, abstime=0x0, op=393, expected=0, futex_word=0x7f52c0a68ce0 <thread_status+3936>) at ./nptl/futex-internal.c:57
  30   Thread 0x7f528ddfe640 (LWP 24900) __futex_abstimed_wait_common64 (private=0, cancel=true, abstime=0x0, op=393, expected=0, futex_word=0x7f52c0a68860 <thread_status+2784>) at ./nptl/futex-internal.c:57
  31   Thread 0x7f4f9cfe5640 (LWP 25505) __futex_abstimed_wait_common64 (private=<optimized out>, cancel=true, abstime=0x7f4f9cfe44d0, op=137, expected=0, futex_word=0x7f52380ab7c0) at ./nptl/futex-internal.c:57
  32   Thread 0x7f529d7ff640 (LWP 24894) __futex_abstimed_wait_common64 (private=0, cancel=true, abstime=0x0, op=393, expected=0, futex_word=0x7f52c0a68560 <thread_status+2016>) at ./nptl/futex-internal.c:57
  33   Thread 0x7f52a55ff640 (LWP 24891) __futex_abstimed_wait_common64 (private=0, cancel=true, abstime=0x0, op=393, expected=0, futex_word=0x7f52c0a683e0 <thread_status+1632>) at ./nptl/futex-internal.c:57
  34   Thread 0x7f52b9ffd640 (LWP 24883) __futex_abstimed_wait_common64 (private=0, cancel=true, abstime=0x0, op=393, expected=0, futex_word=0x7f52c0a67fe0 <thread_status+608>) at ./nptl/futex-internal.c:57
  35   Thread 0x7f528b3ff640 (LWP 24901) __futex_abstimed_wait_common64 (private=0, cancel=true, abstime=0x0, op=393, expected=0, futex_word=0x7f52c0a688e0 <thread_status+2912>) at ./nptl/futex-internal.c:57
  36   Thread 0x7f527f5ff640 (LWP 24904) __futex_abstimed_wait_common64 (private=0, cancel=true, abstime=0x0, op=393, expected=0, futex_word=0x7f52c0a68a60 <thread_status+3296>) at ./nptl/futex-internal.c:57
  37   Thread 0x7f52869ff640 (LWP 24902) __futex_abstimed_wait_common64 (private=0, cancel=true, abstime=0x0, op=393, expected=0, futex_word=0x7f52c0a68960 <thread_status+3040>) at ./nptl/futex-internal.c:57
  38   Thread 0x7f52777ff640 (LWP 24907) __futex_abstimed_wait_common64 (private=0, cancel=true, abstime=0x0, op=393, expected=0, futex_word=0x7f52c0a68be0 <thread_status+3680>) at ./nptl/futex-internal.c:57
  39   Thread 0x7f5145ca2640 (LWP 25838) __futex_abstimed_wait_common64 (private=<optimized out>, cancel=true, abstime=0x0, op=393, expected=0, futex_word=0x55fe8fa36f40) at ./nptl/futex-internal.c:57
```

Info from thread 1
```
(gdb) thread 1
[Switching to thread 1 (Thread 0x7f5231bd9640 (LWP 25840))]
#0  __pthread_kill_implementation (no_tid=0, signo=11, threadid=139990998554176) at ./nptl/pthread_kill.c:44
44      in ./nptl/pthread_kill.c
(gdb) bt
#0  __pthread_kill_implementation (no_tid=0, signo=11, threadid=139990998554176) at ./nptl/pthread_kill.c:44
#1  __pthread_kill_internal (signo=11, threadid=139990998554176) at ./nptl/pthread_kill.c:78
#2  __GI___pthread_kill (threadid=139990998554176, signo=signo@entry=11) at ./nptl/pthread_kill.c:89
#3  0x00007f52c64c9476 in __GI_raise (sig=sig@entry=11) at ../sysdeps/posix/raise.c:26
#4  0x00007f52c6a25003 in faulthandler_fatal_error (signum=11) at ./Modules/faulthandler.c:384
#5  <signal handler called>
#6  Py_DECREF (op=0x0, lineno=777, filename=0x7f52c6b37e40 "Python/hamt.c") at ./Include/object.h:521
#7  hamt_node_bitmap_assoc (self=<optimized out>, shift=0, hash=797596016, key=<_contextvars.ContextVar at remote 0x7f52621992b0>, val=<Scope at remote 0x7f4c4b714850>, added_leaf=<optimized out>) at Python/hamt.c:777
#8  0x00007f52c69cf290 in hamt_node_assoc (node=<optimized out>, shift=shift@entry=0, hash=<optimized out>, key=key@entry=<_contextvars.ContextVar at remote 0x7f52621992b0>, val=val@entry=<Scope at remote 0x7f4c4b714850>, added_leaf=added_leaf@entry=0x7f5231bd8524) at Python/hamt.c:2037
#9  0x00007f52c69d012d in _PyHamt_Assoc (o=0x7f4c6c4160d0, key=key@entry=<_contextvars.ContextVar at remote 0x7f52621992b0>, val=val@entry=<Scope at remote 0x7f4c4b714850>) at Python/hamt.c:2309
#10 0x00007f52c69bf0c2 in contextvar_set (var=var@entry=0x7f52621992b0, val=val@entry=<Scope at remote 0x7f4c4b714850>) at Python/context.c:746
#11 0x00007f52c69bffdf in PyContextVar_Set (ovar=<_contextvars.ContextVar at remote 0x7f52621992b0>, val=<Scope at remote 0x7f4c4b714850>) at Python/context.c:285
#12 0x00007f52c69c00eb in _contextvars_ContextVar_set (self=<optimized out>, value=<optimized out>) at Python/context.c:1019
#13 0x00007f52c68bef5a in cfunction_vectorcall_O (func=<built-in method set of _contextvars.ContextVar object at remote 0x7f52621992b0>, args=0x7f4c7daf4ed8, nargsf=<optimized out>, kwnames=<optimized out>) at Objects/methodobject.c:514
#14 0x00007f52c685d43a in _PyObject_VectorcallTstate (tstate=0x55fe8ff6aed0, callable=<built-in method set of _contextvars.ContextVar object at remote 0x7f52621992b0>, args=0x7f4c7daf4ed8, nargsf=1, kwnames=0x0) at ./Include/internal/pycore_call.h:92
#15 0x00007f52c685d55a in PyObject_Vectorcall (callable=callable@entry=<built-in method set of _contextvars.ContextVar object at remote 0x7f52621992b0>, args=args@entry=0x7f4c7daf4ed8, nargsf=nargsf@entry=1, kwnames=kwnames@entry=0x0) at Objects/call.c:299
#16 0x00007f52c698a2a0 in trace_call_function (tstate=tstate@entry=0x55fe8ff6aed0, func=<built-in method set of _contextvars.ContextVar object at remote 0x7f52621992b0>, func@entry=<method_descriptor at remote 0x7f52c5fe2c30>, args=args@entry=0x7f4c7daf4ed0, nargs=2, kwnames=0x0) at Python/ceval.c:7301
#17 0x00007f52c699b3c1 in _PyEval_EvalFrameDefault (tstate=tstate@entry=0x55fe8ff6aed0, frame=frame@entry=0x7f4c7daf4e70, throwflag=throwflag@entry=0) at Python/ceval.c:4764
#18 0x00007f52c687e250 in _PyEval_EvalFrame (throwflag=0, frame=0x7f4c7daf4e70, tstate=0x55fe8ff6aed0) at ./Include/internal/pycore_ceval.h:73
#19 gen_send_ex2 (gen=0x7f4c7daf4e20, arg=arg@entry=0x0, presult=presult@entry=0x7f5231bd8840, exc=exc@entry=0, closing=closing@entry=0) at Objects/genobject.c:219
#20 0x00007f52c687ed84 in gen_iternext (gen=<optimized out>) at Objects/genobject.c:594
#21 0x00007f52c697b70c in builtin_next (self=<optimized out>, args=0x7f5271a16220, nargs=1) at Python/bltinmodule.c:1477
#22 0x00007f52c68bf648 in cfunction_vectorcall_FASTCALL (func=<built-in method next of module object at remote 0x7f52c604f590>, args=0x7f5271a16220, nargsf=<optimized out>, kwnames=<optimized out>) at Objects/methodobject.c:427
#23 0x00007f52c685d43a in _PyObject_VectorcallTstate (tstate=0x55fe8ff6aed0, callable=<built-in method next of module object at remote 0x7f52c604f590>, args=0x7f5271a16220, nargsf=1, kwnames=0x0) at ./Include/internal/pycore_call.h:92
#24 0x00007f52c685d55a in PyObject_Vectorcall (callable=callable@entry=<built-in method next of module object at remote 0x7f52c604f590>, args=args@entry=0x7f5271a16220, nargsf=nargsf@entry=1, kwnames=kwnames@entry=0x0) at Objects/call.c:299
#25 0x00007f52c698a12f in trace_call_function (tstate=tstate@entry=0x55fe8ff6aed0, func=func@entry=<built-in method next of module object at remote 0x7f52c604f590>, args=args@entry=0x7f5271a16220, nargs=1, kwnames=0x0) at Python/ceval.c:7285
#26 0x00007f52c699b3c1 in _PyEval_EvalFrameDefault (tstate=tstate@entry=0x55fe8ff6aed0, frame=frame@entry=0x7f5271a161c0, throwflag=throwflag@entry=0) at Python/ceval.c:4764
#27 0x00007f52c69a11fa in _PyEval_EvalFrame (throwflag=0, frame=0x7f5271a161c0, tstate=0x55fe8ff6aed0) at ./Include/internal/pycore_ceval.h:73
#28 _PyEval_Vector (tstate=0x55fe8ff6aed0, func=<optimized out>, locals=locals@entry=0x0, args=<optimized out>, argcount=<optimized out>, kwnames=<optimized out>) at Python/ceval.c:6434
#29 0x00007f52c685cf7e in _PyFunction_Vectorcall (func=<optimized out>, stack=<optimized out>, nargsf=<optimized out>, kwnames=<optimized out>) at Objects/call.c:393
#30 0x00007f52c6860f0e in _PyObject_VectorcallTstate (kwnames=0x0, nargsf=1, args=0x7f5231bd8af8, callable=<function at remote 0x7f52c5d9eba0>, tstate=0x55fe8ff6aed0) at ./Include/internal/pycore_call.h:92
#31 method_vectorcall (method=<optimized out>, args=0x0, nargsf=<optimized out>, kwnames=0x0) at Objects/classobject.c:67
#32 0x00007f52c6999af0 in _PyObject_VectorcallTstate (kwnames=0x0, nargsf=0, args=0x0, callable=<method at remote 0x7f4c6c2b61b0>, tstate=0x55fe8ff6aed0) at ./Include/internal/pycore_call.h:92
#33 _PyObject_CallNoArgs (func=<method at remote 0x7f4c6c2b61b0>) at ./Include/internal/pycore_call.h:107
#34 _PyEval_EvalFrameDefault (tstate=tstate@entry=0x55fe8ff6aed0, frame=0x7f5271a16110, frame@entry=0x7f5271a16020, throwflag=throwflag@entry=0) at Python/ceval.c:4422
#35 0x00007f52c69a11fa in _PyEval_EvalFrame (throwflag=0, frame=0x7f5271a16020, tstate=0x55fe8ff6aed0) at ./Include/internal/pycore_ceval.h:73
#36 _PyEval_Vector (tstate=0x55fe8ff6aed0, func=<optimized out>, locals=locals@entry=0x0, args=<optimized out>, argcount=<optimized out>, kwnames=<optimized out>) at Python/ceval.c:6434
#37 0x00007f52c685cf7e in _PyFunction_Vectorcall (func=<optimized out>, stack=<optimized out>, nargsf=<optimized out>, kwnames=<optimized out>) at Objects/call.c:393
#38 0x00007f52c6860f0e in _PyObject_VectorcallTstate (kwnames=0x0, nargsf=1, args=0x7f5231bd8d18, callable=<function at remote 0x7f52c5dd1020>, tstate=0x55fe8ff6aed0) at ./Include/internal/pycore_call.h:92
#39 method_vectorcall (method=<optimized out>, args=0x7f52c6d333f0 <_PyRuntime+58928>, nargsf=<optimized out>, kwnames=0x0) at Objects/classobject.c:67
#40 0x00007f52c685c9b3 in _PyVectorcall_Call (tstate=tstate@entry=0x55fe8ff6aed0, func=0x7f52c6860d2f <method_vectorcall>, callable=callable@entry=<method at remote 0x7f4c6c2b6450>, tuple=tuple@entry=(), kwargs=kwargs@entry=0x0) at Objects/call.c:245
#41 0x00007f52c685ce7b in _PyObject_Call (tstate=0x55fe8ff6aed0, callable=<method at remote 0x7f4c6c2b6450>, args=(), kwargs=0x0) at Objects/call.c:328
#42 0x00007f52c685cef2 in PyObject_Call (callable=<optimized out>, args=<optimized out>, kwargs=<optimized out>) at Objects/call.c:355
#43 0x00007f52c6a8fc08 in thread_run (boot_raw=boot_raw@entry=0x55fe90591e50) at ./Modules/_threadmodule.c:1124
#44 0x00007f52c6a0e21e in pythread_wrapper (arg=<optimized out>) at Python/thread_pthread.h:241
#45 0x00007f52c651bac3 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:442
#46 0x00007f52c65ad850 in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:81
```

### pip freeze --all
[freeze.txt](https://github.com/user-attachments/files/21530368/freeze.txt)


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Possible Race condition in sentry-sdk 2.33.2 use_context() #4652

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Possible Race condition in sentry-sdk 2.33.2 use_context() #4652

Description

How do you use Sentry?

Version

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What

Where

Environment

More info

Expected Result

Actual Result

py-bt

info threads

pip freeze --all

Metadata

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