Segfault when calling Python function repeatedly. #731
Description
Affects: PythonCall
I call a Python function in a loop. Most of the time all good, but some times crashes.
I will try and create an MWE soon.
[832110] signal 11 (1): Segmentation fault
in expression starting at /home/cakeduke/<path>
unknown function (ip: 0x7f972e778b30) at /usr/lib/x86_64-linux-gnu/libpython3.13.so.1.0
pydecref_ at /home/cakeduke/.julia/packages/PyCall/1gn3u/src/PyCall.jl:118 [inlined] pydecref at /home/cakeduke/.julia/packages/PyCall/1gn3u/src/PyCall.jl:123
jfptr_pydecref_8286 at /home/cakeduke/.julia/compiled/v1.12/PyCall/GkzkC_MLBTq.so (unknown line)
run_finalizer at /cache/build/builder-amdci5-2/julialang/julia-release-1-dot-12/src/gc-common.c:180
jl_gc_run_finalizers_in_list at /cache/build/builder-amdci5-2/julialang/julia-release-1-dot-12/src/gc-common.c:270
run_finalizers at /cache/build/builder-amdci5-2/julialang/julia-release-1-dot-12/src/gc-common.c:316
enable_finalizers at ./gcutils.jl:161 [inlined]
unlock at ./locks-mt.jl:68 [inlined]
multiq_deletemin at ./partr.jl:212
trypoptask at ./task.jl:1208
jfptr_trypoptask_1822.1 at /home/cakeduke/julia-1.12.2/lib/julia/sys.so (unknown line)
get_next_task at /cache/build/builder-amdci5-2/julialang/julia-release-1-dot-12/src/scheduler.c:309 [inlined]
ijl_task_get_next at /cache/build/builder-amdci5-2/julialang/julia-release-1-dot-12/src/scheduler.c:371
PyCall v1.96.4
Julia 1.12.2
Python 3.13.5 (This is the OS python, I'm unsure what PyCall actually uses)
CondaPkg not installed.
julia> versioninfo()
Julia Version 1.12.2
Commit ca9b6662be4 (2025-11-20 16:25 UTC)
Build Info:
Official https://julialang.org release
Platform Info:
OS: Linux (x86_64-linux-gnu)
CPU: 8 × Intel(R) Core(TM) i7-8665U CPU @ 1.90GHz
WORD_SIZE: 64
LLVM: libLLVM-18.1.7 (ORCJIT, skylake)
GC: Built with stock GC
Threads: 1 default, 1 interactive, 1 GC (on 8 virtual cores)
Environment:
JULIA_PKG_USE_CLI_GIT = true