Result of multiprocessing.heap.BufferWrapper.create_memoryview can point to freed memory
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3.10
3.9 (EOL)
stdlib
topic-ctypes
topic-multiprocessing
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Description
| BPO | 41673 |
|---|
Note: these values reflect the state of the issue at the time it was migrated and might not reflect the current state.
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GitHub fields:
assignee = None
closed_at = None
created_at = <Date 2020-08-31.12:56:22.474>
labels = ['ctypes', 'library', '3.9', '3.10']
title = 'Result of multiprocessing.heap.BufferWrapper.create_memoryview can point to freed memory'
updated_at = <Date 2020-08-31.12:57:18.235>
user = 'https://bugs.python.org/EricWieser'
bugs.python.org fields:
activity = <Date 2020-08-31.12:57:18.235>
actor = 'Eric Wieser'
assignee = 'none'
closed = False
closed_date = None
closer = None
components = ['Library (Lib)', 'ctypes']
creation = <Date 2020-08-31.12:56:22.474>
creator = 'Eric Wieser'
dependencies = []
files = []
hgrepos = []
issue_num = 41673
keywords = []
message_count = 2.0
messages = ['376149', '376150']
nosy_count = 1.0
nosy_names = ['Eric Wieser']
pr_nums = []
priority = 'normal'
resolution = None
stage = None
status = 'open'
superseder = None
type = None
url = 'https://bugs.python.org/issue41673'
versions = ['Python 3.9', 'Python 3.10']
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start at multiprocessing.heap.BufferWrapper.create_memoryview and trace the ownership and lifetime of the returned view alongside ctypes. Reproduce the freed-memory case and add regression coverage; done means the result cannot point to released memory.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- python
- Domain
- backend
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Needs clarification
- Newbie friendliness
- 25/100