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Segfault with asyncio.base_events.BaseEventLoop when passed a small float to set_debug. #126881
Description
Crash report
What happened?
It's possible to segfault the interpreter by passing a small float as the enabled parameter of asyncio.base_events.BaseEventLoop.set_debug():
import asyncio.base_events
obj = asyncio.base_events.BaseEventLoop()
obj.set_debug(0.0005)
obj._run_forever_setup()Found using fusil by @vstinner.
CPython versions tested on:
3.13, 3.14, CPython main branch
Operating systems tested on:
Linux
Output from running 'python -VV' on the command line:
Python 3.14.0a1+ experimental free-threading build (heads/main-dirty:54c63a32d0, Nov 8 2024, 20:16:36) [GCC 11.4.0]
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picnixz commentedon Nov 16, 2024
I'm assuming that this only happens on the free-threaded build, or?
devdanzin commentedon Nov 16, 2024
No, it segfaults on normal build too, sorry for not mentioning it.
picnixz commentedon Nov 16, 2024
I'll have a look at this one.
10 remaining items
kumaraditya303 commentedon Nov 16, 2024
#126904 fixes this
vstinner commentedon Nov 18, 2024
IMO it's also worth it to fix asyncio.
picnixz commentedon Nov 18, 2024
I'll reopen it once I'm back from my travels if you think it's worth it!
gh-126881: fix finalization of dtoa state (#126904)
pythongh-126881: fix finalization of dtoa state (pythonGH-126904)
kumaraditya303 commentedon Nov 29, 2024
Fixed by #126904
[3.13] gh-126881: fix finalization of dtoa state (GH-126904) (#127395)
pythongh-126881: fix finalization of dtoa state (python#126904)
pythongh-126881: fix finalization of dtoa state (python#126904)