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Segfault on __getattr__ infinite recursion on certain attribute accesses #86075

@bluetech

Description

@bluetech
mannequin
BPO 41909
Nosy @gvanrossum, @loewis, @nascheme, @pitrou, @serhiy-storchaka, @The-Compiler, @bluetech, @sparkingdark
PRs
  • bpo-41909: Enable previously disabled recursion checks. #22536
  • [3.9] bpo-41909: Enable previously disabled recursion checks. (GH-22536) #22550
  • [3.8] bpo-41909: Enable previously disabled recursion checks. (GH-22536) #22551
  • 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 = <Date 2020-10-04.22:44:32.041>
    created_at = <Date 2020-10-02.10:49:51.390>
    labels = ['interpreter-core', '3.10', '3.8', '3.9', 'type-crash']
    title = 'Segfault on __getattr__ infinite recursion on certain attribute accesses'
    updated_at = <Date 2020-10-04.22:44:32.041>
    user = 'https://github.com/bluetech'

    bugs.python.org fields:

    activity = <Date 2020-10-04.22:44:32.041>
    actor = 'serhiy.storchaka'
    assignee = 'none'
    closed = True
    closed_date = <Date 2020-10-04.22:44:32.041>
    closer = 'serhiy.storchaka'
    components = ['Interpreter Core']
    creation = <Date 2020-10-02.10:49:51.390>
    creator = 'bluetech'
    dependencies = []
    files = []
    hgrepos = []
    issue_num = 41909
    keywords = ['patch']
    message_count = 8.0
    messages = ['377807', '377860', '377905', '377920', '377922', '377977', '377979', '377980']
    nosy_count = 8.0
    nosy_names = ['gvanrossum', 'loewis', 'nascheme', 'pitrou', 'serhiy.storchaka', 'The Compiler', 'bluetech', 'sparkingdark']
    pr_nums = ['22536', '22550', '22551']
    priority = 'normal'
    resolution = 'fixed'
    stage = 'resolved'
    status = 'closed'
    superseder = None
    type = 'crash'
    url = 'https://bugs.python.org/issue41909'
    versions = ['Python 3.8', 'Python 3.9', 'Python 3.10']

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      3.10only security fixes3.8 (EOL)end of life3.9 (EOL)end of lifeinterpreter-core(Objects, Python, Grammar, and Parser dirs)type-crashA hard crash of the interpreter, possibly with a core dump

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