GeezerVison is showing github.com — [3.13] gh-123022: Fix crash with `Py_Initialize` in background thread (GH-123052) by miss-islington · Pull Request #123114 · python/cpython
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miss-islington
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Aug 17, 2024
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edited by bedevere-app
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Check that the current default heap is initialized in
_mi_os_get_aligned_hint and mi_os_claim_huge_pages.
The mimalloc function _mi_os_get_aligned_hint assumes that there is an
initialized default heap. This is true for our main thread, but not for
background threads. The problematic code path is usually called during
initialization (i.e., Py_Initialize), but it may also be called if the
program allocates large amounts of memory in total.
The crash only affected the free-threaded build.
(cherry picked from commit d061ffe)
Co-authored-by: Sam Gross [email protected]
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…ythonGH-123052)
Check that the current default heap is initialized in
`_mi_os_get_aligned_hint` and `mi_os_claim_huge_pages`.
The mimalloc function `_mi_os_get_aligned_hint` assumes that there is an
initialized default heap. This is true for our main thread, but not for
background threads. The problematic code path is usually called during
initialization (i.e., `Py_Initialize`), but it may also be called if the
program allocates large amounts of memory in total.
The crash only affected the free-threaded build.
(cherry picked from commit d061ffe)
Co-authored-by: Sam Gross <[email protected]>
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