Message 295467 - Python tracker

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In-reply-to
Author	dino.viehland
Recipients	brett.cannon, dino.viehland, yselivanov
Date	2017年06月08日.21:37:03
SpamBayes Score	-1.0
Marked as misclassified	Yes
Message-id	<1496957823.48.0.898285168896.issue30604@psf.upfronthosting.co.za>

Content
The co_extra_freefuncs are stored in PyThreadState. When calling _PyEval_RequestCodeExtraIndex you are given a thread specific index. The code object can then lose it's last reference on a different thread, and the wrong free function can be called if users of the extra space have made calls to get their index in different orders. This can also lead to crashes if the extra thread hasn't yet requested extra indexes either.

Content

The co_extra_freefuncs are stored in PyThreadState. When calling _PyEval_RequestCodeExtraIndex you are given a thread specific index. The code object can then lose it's last reference on a different thread, and the wrong free function can be called if users of the extra space have made calls to get their index in different orders. 
This can also lead to crashes if the extra thread hasn't yet requested extra indexes either.

History
Date	User	Action	Args
2017年06月08日 21:37:03	dino.viehland	set	recipients: + dino.viehland, brett.cannon, yselivanov
2017年06月08日 21:37:03	dino.viehland	set	messageid: <1496957823.48.0.898285168896.issue30604@psf.upfronthosting.co.za>
2017年06月08日 21:37:03	dino.viehland	link	issue30604 messages
2017年06月08日 21:37:03	dino.viehland	create

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