gh-84559: multiprocessing: detect if forkserver cannot work due to missing hmac-sha256 by gpshead · Pull Request #127467 · python/cpython · GitHub

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gpshead:multiprocessing-forkserver-no-hmac-disable

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Pull requests 2.6k

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gh-127298: Refactor test_hashlib for better usedforsecurity & openssl fips mode env support. #127492

multiprocessing's default posix start method of 'fork' is broken: change to `'forkserver' || 'spawn' #84559

: multiprocessing detect of forkserver cannot work due …

Refactor test_hashlib for better usedforsecurity & openssl fips mode …

More hashlib robustness in strange "FIPS mode" environments.

: multiprocessing detect of forkserver cannot work due …

More multiprocessing & concurrent.futures disables when forkserver ca…

Merge branch 'hashlib-fips-oddmode' into multiprocessing-forkserver-n…

gh-127298: When in FIPS mode ensure builtin hashes check for usedforsecurity=False #127301

https://github.com/python/cpython/blob/905ba7f06c12f7ef9985ccaa2bf24229f759a2e1/Lib/test/hashlibdata/openssl.cnf

This is a with a dumb "openssl fips mode" config that blocks all ciphers, running a python also configured not to have a fallback builtin sha256 module. configure --without-builtin-hashlib-hashes, and set the OPENSSL_CON

github-actions Bot commented Apr 20, 2026

This PR is stale because it has been open for 30 days with no activity.