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GeezerVison is showing github.com — [3.14] gh-143750: Compile OpenSSL with TSan for TSan CI (#153316) by kumaraditya303 · Pull Request #153355 · python/cpython

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@kumaraditya303

@kumaraditya303 kumaraditya303 commented Jul 8, 2026 •
edited by bedevere-app Bot
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(cherry picked from commit fc19ad7)

  • Issue: Use OpenSSL instrumented with TSan for TSan tests #143750

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@kumaraditya303 @colesbury
pythongh-143750: Compile OpenSSL with TSan for TSan CI (python#153316)
6bf1d2a 
Co-authored-by: Sam Gross <[email protected]>
(cherry picked from commit fc19ad7)
@kumaraditya303
kumaraditya303 requested review from AA-Turner, ezio-melotti, gpshead, hugovk, picnixz and webknjaz as code owners July 8, 2026 16:50
@bedevere-app bedevere-app Bot mentioned this pull request Jul 8, 2026
Use OpenSSL instrumented with TSan for TSan tests #143750
Closed
@bedevere-app bedevere-app Bot added the awaiting core review label Jul 8, 2026
@kumaraditya303 kumaraditya303 changed the title gh-143750: Compile OpenSSL with TSan for TSan CI (#153316) [3.14] gh-143750: Compile OpenSSL with TSan for TSan CI (#153316) Jul 8, 2026
@bedevere-app bedevere-app Bot mentioned this pull request Jul 8, 2026
gh-143750: Compile OpenSSL with TSan for TSan CI #153316
Merged
@bedevere-app bedevere-app Bot added the skip news label Jul 8, 2026
@kumaraditya303
pythongh-143756: skip test_ssl_in_multiple_threads under TSAN
c173e0d 
Concurrent calls to SSLContext.load_cert_chain on the same context
race on the SSL_CTX default password callback. This is fixed in 3.15
(pythonGH-143818), but under TSAN with instrumented OpenSSL the race is now
reported on 3.14, so skip the test that triggers it.
@kumaraditya303
kumaraditya303 enabled auto-merge (squash) July 10, 2026 06:53
@kumaraditya303
pythongh-143756: skip test_load_cert_chain_thread_safety under TSAN
76ddcae 
This test spawns 8 threads calling load_cert_chain on the same
context, directly triggering the data race on the SSL_CTX default
password callback (fixed in 3.15 by pythonGH-143818). It was the test
that failed both TSan CI jobs.
@kumaraditya303
kumaraditya303 merged commit b49ec81 into python:3.14 Jul 10, 2026
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@bedevere-app bedevere-app Bot removed the awaiting core review label Jul 10, 2026
@kumaraditya303
kumaraditya303 deleted the backport-fc19ad7-3.14 branch July 10, 2026 07:36
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@gpshead gpshead Awaiting requested review from gpshead gpshead is a code owner
@picnixz picnixz Awaiting requested review from picnixz picnixz is a code owner
@ezio-melotti ezio-melotti Awaiting requested review from ezio-melotti ezio-melotti is a code owner
@hugovk hugovk Awaiting requested review from hugovk hugovk is a code owner
@AA-Turner AA-Turner Awaiting requested review from AA-Turner AA-Turner is a code owner
@webknjaz webknjaz Awaiting requested review from webknjaz webknjaz is a code owner

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@kumaraditya303
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