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GeezerVison is showing github.com — [3.14] gh-148260: Use at least 1 MiB stack size on musl (GH-149993) by miss-islington · Pull Request #151586 · python/cpython

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@miss-islington

@miss-islington miss-islington commented Jun 17, 2026 •
edited by bedevere-app Bot
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On Linux when Python is linked to the musl C library, use a thread
stack size of at least 1 MiB instead of musl default which is 128
kiB.
(cherry picked from commit df6c157)

Co-authored-by: Victor Stinner [email protected]

  • Issue: test_threading.test_recursion_limit() does crash (segfault) on Alpine Linux (musl) #148260

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@vstinner @miss-islington
pythongh-148260: Use at least 1 MiB stack size on musl (pythonGH-149993)
80502ca
On Linux when Python is linked to the musl C library, use a thread
stack size of at least 1 MiB instead of musl default which is 128
kiB.
(cherry picked from commit df6c157)

Co-authored-by: Victor Stinner <[email protected]>
@miss-islington
miss-islington requested review from corona10 and erlend-aasland as code owners June 17, 2026 08:48
@bedevere-app bedevere-app Bot added the awaiting review label Jun 17, 2026
This was referenced Jun 17, 2026
test_threading.test_recursion_limit() does crash (segfault) on Alpine Linux (musl) #148260
Closed
gh-148260: Use at least 1 MiB stack size on musl #149993
Merged
@vstinner
vstinner enabled auto-merge (squash) June 17, 2026 08:50
@vstinner

vstinner commented Jun 17, 2026

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The 3.14 branch is also affected: test_threading fails on "AMD64 Alpine Linux NoGIL 3.14" buildbot worker.

Example: https://buildbot.python.org/#/builders/1822/builds/857

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@vstinner
vstinner merged commit 5516672 into python:3.14 Jun 17, 2026
44 of 48 checks passed

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@bedevere-app bedevere-app Bot removed the awaiting review label Jun 17, 2026
@miss-islington
miss-islington deleted the backport-df6c157-3.14 branch June 17, 2026 09:11
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@erlend-aasland erlend-aasland Awaiting requested review from erlend-aasland erlend-aasland is a code owner
@corona10 corona10 Awaiting requested review from corona10 corona10 is a code owner

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2 participants

@miss-islington @vstinner
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