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Getting crashes (SIGABRT) on NetBSD 10.0 + Python 3.7 #7694

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hellium6 opened this issue Jun 28, 2024 · 1 comment
Open

Getting crashes (SIGABRT) on NetBSD 10.0 + Python 3.7 #7694

hellium6 opened this issue Jun 28, 2024 · 1 comment

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@hellium6
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libtorrent version (or branch): v2.0.10

platform/architecture: NetBSD 10.0 amd64

compiler and compiler version: gcc (nb3 20231008) 10.5.0

My process is described in detail below. When I run python3.7 -c 'import libtorrent' it shows Abort trap (core dumped)

Here is a gdb backtrace:

#0  0x00007d2cd0f7e74a in _lwp_kill () from /usr/lib/libc.so.12
#1  0x00007d2cd0e48fa4 in __libc_mutex_unlock_stub () from /usr/lib/libc.so.12
#2  0x00007d2ccfc16e93 in boost::asio::ssl::detail::openssl_init_base::instance() () from /home/user/.local/lib/python3.7/site-packages/libtorrent-0.0.0-py3.7-netbsd-10.0-amd64.egg/libtorrent/__init__.so
#3  0x00007d2ccfbfa5ce in _GLOBAL__sub_I_converters.cpp () from /home/user/.local/lib/python3.7/site-packages/libtorrent-0.0.0-py3.7-netbsd-10.0-amd64.egg/libtorrent/__init__.so
#4  0x00007f7f3ba06416 in _rtld_call_init_function () from /usr/libexec/ld.elf_so
#5  0x00007f7f3ba0675c in _rtld_call_init_functions () from /usr/libexec/ld.elf_so
#6  0x00007f7f3ba07698 in dlopen () from /usr/libexec/ld.elf_so
#7  0x00007d2cd2966370 in _PyImport_FindSharedFuncptr () from /usr/pkg/lib/libpython3.7.so.1.0
#8  0x00007d2cd293df27 in _PyImport_LoadDynamicModuleWithSpec () from /usr/pkg/lib/libpython3.7.so.1.0
#9  0x00007d2cd293c1d8 in _imp_create_dynamic () from /usr/pkg/lib/libpython3.7.so.1.0
#10 0x00007d2cd28826af in _PyMethodDef_RawFastCallDict () from /usr/pkg/lib/libpython3.7.so.1.0
#11 0x00007d2cd288277a in _PyCFunction_FastCallDict () from /usr/pkg/lib/libpython3.7.so.1.0
#12 0x00007d2cd29c08c8 in _PyEval_EvalFrameDefault () from /usr/pkg/lib/libpython3.7.so.1.0
#13 0x00007d2cd29262de in _PyEval_EvalCodeWithName () from /usr/pkg/lib/libpython3.7.so.1.0
#14 0x00007d2cd2881af9 in _PyFunction_FastCallKeywords () from /usr/pkg/lib/libpython3.7.so.1.0
#15 0x00007d2cd29b87d2 in call_function () from /usr/pkg/lib/libpython3.7.so.1.0
#16 0x00007d2cd29bf90a in _PyEval_EvalFrameDefault () from /usr/pkg/lib/libpython3.7.so.1.0
#17 0x00007d2cd29b76e8 in function_code_fastcall () from /usr/pkg/lib/libpython3.7.so.1.0
#18 0x00007d2cd29b87d2 in call_function () from /usr/pkg/lib/libpython3.7.so.1.0
#19 0x00007d2cd29be0c1 in _PyEval_EvalFrameDefault () from /usr/pkg/lib/libpython3.7.so.1.0
#20 0x00007d2cd29b76e8 in function_code_fastcall () from /usr/pkg/lib/libpython3.7.so.1.0
#21 0x00007d2cd29b87d2 in call_function () from /usr/pkg/lib/libpython3.7.so.1.0
#22 0x00007d2cd29bd1c0 in _PyEval_EvalFrameDefault () from /usr/pkg/lib/libpython3.7.so.1.0
#23 0x00007d2cd29b76e8 in function_code_fastcall () from /usr/pkg/lib/libpython3.7.so.1.0
#24 0x00007d2cd29b87d2 in call_function () from /usr/pkg/lib/libpython3.7.so.1.0
#25 0x00007d2cd29bd1c0 in _PyEval_EvalFrameDefault () from /usr/pkg/lib/libpython3.7.so.1.0
#26 0x00007d2cd29b76e8 in function_code_fastcall () from /usr/pkg/lib/libpython3.7.so.1.0
#27 0x00007d2cd29b87d2 in call_function () from /usr/pkg/lib/libpython3.7.so.1.0
#28 0x00007d2cd29bd1c0 in _PyEval_EvalFrameDefault () from /usr/pkg/lib/libpython3.7.so.1.0
#29 0x00007d2cd29b76e8 in function_code_fastcall () from /usr/pkg/lib/libpython3.7.so.1.0
#30 0x00007d2cd2883487 in object_vacall () from /usr/pkg/lib/libpython3.7.so.1.0
#31 0x00007d2cd2883730 in _PyObject_CallMethodIdObjArgs () from /usr/pkg/lib/libpython3.7.so.1.0
#32 0x00007d2cd293d104 in PyImport_ImportModuleLevelObject () from /usr/pkg/lib/libpython3.7.so.1.0
#33 0x00007d2cd29c0a21 in _PyEval_EvalFrameDefault () from /usr/pkg/lib/libpython3.7.so.1.0
#34 0x00007d2cd29262de in _PyEval_EvalCodeWithName () from /usr/pkg/lib/libpython3.7.so.1.0
#35 0x00007d2cd2926576 in PyEval_EvalCodeEx () from /usr/pkg/lib/libpython3.7.so.1.0
#36 0x00007d2cd29265c0 in PyEval_EvalCode () from /usr/pkg/lib/libpython3.7.so.1.0
#37 0x00007d2cd294ef3a in run_mod () from /usr/pkg/lib/libpython3.7.so.1.0
#38 0x00007d2cd295076e in PyRun_StringFlags () from /usr/pkg/lib/libpython3.7.so.1.0
#39 0x00007d2cd29507cc in PyRun_SimpleStringFlags () from /usr/pkg/lib/libpython3.7.so.1.0
#40 0x00007d2cd296c4fd in pymain_main () from /usr/pkg/lib/libpython3.7.so.1.0
#41 0x00007d2cd296cd26 in _Py_UnixMain () from /usr/pkg/lib/libpython3.7.so.1.0
#42 0x0000000066400aad in _start ()

The same process followed for Python 3.11.8 from NetBSD repos did not crash.

I need v2.0.6 to work, but for reporting I'm going with the latest release, v2.0.10.

I installed python 3.7.17 from this commit of NetBSD/pkgsrc. Apart from adding some CFLAGS and LDFLAGS in Makefile there is not much difference. Something like:

git clone --depth 1 -b 01db152b21d3830339e882468c3c0451ffe918ca https://github.com/NetBSD/pkgsrc
cd pkgsrc/lang/python37
bmake package
doas bmake install || doas bmake replace
Details on build here 
$ uname -mrs
NetBSD 10.0 amd64

cd ~
mkdir test
cd test

git clone --depth 1 -b OpenSSL_1_1_1w https://github.com/openssl/openssl
cd openssl
git switch -c clone  #fix detached HEAD
git submodule update --init --recursive --depth 1
./config -fPIC -shared --prefix=/usr/local/custom
gmake  #GNU Make
doas gmake all install_sw
cd ..

$ cc --version
cc (nb3 20231008) 10.5.0
...

$ cat ~/user-config.jam
using python : 3.7 ;
using gcc : fail : /dev/null : ; # It will fail. To test if this is ever selected (wrongfully).
# gnu++14 for NetBSD alloca() GNU extensions - https://github.com/tstack/lnav/issues/1158
using gcc : test : g++ : <cxxflags>-std=gnu++14 <cxxflags>-fPIC <crypto>openssl <compileflags>-I/usr/local/custom/include <linkflags>-L/usr/local/custom/lib <linkflags>-Wl,-R/usr/local/custom/lib ;

$ gcc --version
gcc (nb3 20231008) 10.5.0
$ python3.7 --version
Python 3.7.17

curl -LO https://github.com/boostorg/boost/releases/download/boost-1.84.0/boost-1.84.0.tar.xz
tar -xvf boost-1.84.0.tar.xz
cd boost-1.84.0
export BOOST_ROOT=$PWD
export BOOST_BUILD_PATH=$BOOST_ROOT/tools/build
cd $BOOST_BUILD_PATH
./bootstrap.sh
doas ./b2 install
cd $BOOST_ROOT
b2 toolset=gcc-test pch=off variant=debug
doas b2 toolset=gcc-test pch=off variant=debug install --prefix=/usr/local/custom


curl -LO https://github.com/arvidn/libtorrent/releases/download/v2.0.10/libtorrent-rasterbar-2.0.10.tar.gz
tar -xvf libtorrent-rasterbar-2.0.10.tar.gz
cd libtorrent-rasterbar-2.0.10

# I) fix for pthread_np.h not found
$ cat fix.patch
This patch is a fix for "fatal error: pthread_np.h: No such file or directory" on NetBSD
Based on:
https://github.com/NetBSD/pkgsrc/commit/2d1e5065b5bdeec046025bf4bf25a37cd344cd64#diff-ef0645b95bcbcc7ceee1cf25ce8b42799ce0b36157a0ea20252e9170d0fa3a45

--- src/platform_util.cpp.orig	2024-06-25 12:02:05.623242181 +0000
+++ src/platform_util.cpp	2024-06-25 12:04:13.293242181 +0000
@@ -40,7 +40,7 @@
 
 #if TORRENT_HAS_PTHREAD_SET_NAME
 #include <pthread.h>
-#ifdef TORRENT_BSD
+#if defined(TORRENT_BSD) && !defined(__NetBSD__)
 #include <pthread_np.h>
 #endif
 #endif
@@ -105,7 +105,11 @@
 		TORRENT_UNUSED(name);
 #if TORRENT_HAS_PTHREAD_SET_NAME
 #ifdef TORRENT_BSD
+#if defined(__NetBSD__)
+		pthread_setname_np(pthread_self(), name, nullptr);
+#else
 		pthread_set_name_np(pthread_self(), name);
+#endif
 #else
 		pthread_setname_np(pthread_self(), name);
 #endif

$ patch < fix.patch

# II)Without these, cxxstd=14 (c++14) is set and gnu++14 cannot be used. GCC GNU
# Extensions are needed for NetBSD alloca() as described above.
sed -i'.bak' -e '/local CXXVER/,+5d' -e 's/<cxxstd>14//g' Jamfile
sed -i'.bak' -e 's/<cxxstd>14//g' bindings/python/Jamfile

# III) Also comment library_dirs related lines to ensure that our "library-path"
# is used for lssl and lcrypt. library-path would then add our
# /usr/local/custom before other "-L"s. For the rest we'll add a -L/usr/pkg/lib
# in the build_ext command at the end just in case.
sed -i'.bak' -e '/for path in self/ s/./#&/' -e '/f"library-path/ s/./#&/' bindings/python/setup.py

b2 toolset=gcc-test variant=debug link=shared crypto=openssl warnings=off address-model=64
doas b2 toolset=gcc-test variant=debug link=shared crypto=openssl warnings=off address-model=64 install --prefix=/usr/local/custom


python3.7 setup.py build_ext --b2-args="toolset=gcc-test variant=debug crypto=openssl cxxflags=-I/usr/local/custom/include cxxflags=-L/usr/local/custom/lib cxxflags=-Wl,-R/usr/local/custom/lib cxxflags=-L/usr/pkg/lib library-path=/usr/local/custom/lib" install --prefix=~/.local

It ended with:

Extracting libtorrent-0.0.0-py3.7-netbsd-10.0-amd64.egg to /home/user/.local/lib/python3.7/site-packages
Adding libtorrent 0.0.0 to easy-install.pth file

Installed /home/user/.local/lib/python3.7/site-packages/libtorrent-0.0.0-py3.7-netbsd-10.0-amd64.egg
Processing dependencies for libtorrent==0.0.0
Finished processing dependencies for libtorrent==0.0.0

Details about installed files:

$ tree ~/.local/lib/python3.7/site-packages/libtorrent-0.0.0-py3.7-netbsd-10.0-amd64.egg/
/home/user/.local/lib/python3.7/site-packages/libtorrent-0.0.0-py3.7-netbsd-10.0-amd64.egg/
|-- EGG-INFO
|   |-- PKG-INFO
|   |-- SOURCES.txt
|   |-- dependency_links.txt
|   |-- native_libs.txt
|   |-- not-zip-safe
|   `-- top_level.txt
`-- libtorrent
    |-- __init__.py
    |-- __init__.so
    `-- __pycache__
        `-- __init__.cpython-37.pyc

3 directories, 9 files
$ ldd ~/.local/lib/python3.7/site-packages/libtorrent-0.0.0-py3.7-netbsd-10.0-amd64.egg/libtorrent/__init__.so 
/home/user/.local/lib/python3.7/site-packages/libtorrent-0.0.0-py3.7-netbsd-10.0-amd64.egg/libtorrent/__init__.so:
	-lssl.1.1 => /usr/local/custom/lib/libssl.so.1.1
	-lcrypto.1.1 => /usr/local/custom/lib/libcrypto.so.1.1
	-lpthread.1 => /usr/lib/libpthread.so.1
	-lc.12 => /usr/lib/libc.so.12
	-lutil.7 => /usr/lib/libutil.so.7
	-lstdc++.9 => /usr/lib/libstdc++.so.9
	-lm.0 => /usr/lib/libm.so.0
	-lgcc_s.1 => /usr/lib/libgcc_s.so.1

Test:

$ python3.7 -c 'import libtorrent'
Abort trap (core dumped)
# After repeating the build for python 3.11
$ python3.11 -c 'import libtorrent'
$  # no crash

bt

$ gdb -ex "set pagination off" -ex "backtrace" -ex "quit" `which python3.7` python3.7.core
GNU gdb (GDB) 11.0.50.20200914-git
...
Reading symbols from /usr/pkg/bin/python3.7...
(No debugging symbols found in /usr/pkg/bin/python3.7)
[New process 21096]
Core was generated by `python3.7'.
Program terminated with signal SIGABRT, Aborted.
#0  0x000073f26cb7e74a in _lwp_kill () from /usr/lib/libc.so.12
#0  0x000073f26cb7e74a in _lwp_kill () from /usr/lib/libc.so.12
#1  0x000073f26ca48fa4 in __libc_mutex_unlock_stub () from /usr/lib/libc.so.12
#2  0x000073f26ab78213 in __gthread_active_p () at /usr/include/g++/bits/gthr-posix.h:201
#3  0x000073f26b00be26 in __gnu_cxx::__atomic_add_dispatch (__val=1, __mem=0x73f26dffa908) at /usr/include/g++/ext/atomicity.h:94
#4  std::_Sp_counted_base<(__gnu_cxx::_Lock_policy)2>::_M_add_ref_copy (this=0x73f26dffa900) at /usr/include/g++/bits/shared_ptr_base.h:142
#5  0x000073f26b00b6d1 in std::__shared_count<(__gnu_cxx::_Lock_policy)2>::__shared_count (this=0x73f26bef8c48 <boost::asio::ssl::detail::openssl_init<true>::instance_+8>, __r=...) at /usr/include/g++/bits/shared_ptr_base.h:743
#6  0x000073f26b024c61 in std::__shared_ptr<boost::asio::ssl::detail::openssl_init_base::do_init, (__gnu_cxx::_Lock_policy)2>::__shared_ptr (this=0x73f26bef8c40 <boost::asio::ssl::detail::openssl_init<true>::instance_>) at /usr/include/g++/bits/shared_ptr_base.h:1186
#7  0x000073f26b024c8b in std::shared_ptr<boost::asio::ssl::detail::openssl_init_base::do_init>::shared_ptr (this=0x73f26bef8c40 <boost::asio::ssl::detail::openssl_init<true>::instance_>) at /usr/include/g++/bits/shared_ptr.h:149
#8  0x000073f26b024d3b in boost::asio::ssl::detail::openssl_init_base::instance () at /usr/local/custom/include/boost/asio/ssl/detail/impl/openssl_init.ipp:152
#9  0x000073f26b025ff5 in boost::asio::ssl::detail::openssl_init<true>::openssl_init (this=0x73f26bef8c40 <boost::asio::ssl::detail::openssl_init<true>::instance_>) at /usr/local/custom/include/boost/asio/ssl/detail/openssl_init.hpp:60
#10 0x000073f26ab798d9 in __static_initialization_and_destruction_0 (__initialize_p=1, __priority=65535) at /usr/local/custom/include/boost/asio/ssl/detail/openssl_init.hpp:90
#11 0x000073f26ab79c9c in _GLOBAL__sub_I_converters.cpp(void) () at src/converters.cpp:559
#12 0x00007f7ec4c06416 in _rtld_call_init_function () from /usr/libexec/ld.elf_so
#13 0x00007f7ec4c0675c in _rtld_call_init_functions () from /usr/libexec/ld.elf_so
#14 0x00007f7ec4c07698 in dlopen () from /usr/libexec/ld.elf_so
#15 0x000073f26e566370 in _PyImport_FindSharedFuncptr () from /usr/pkg/lib/libpython3.7.so.1.0
#16 0x000073f26e53df27 in _PyImport_LoadDynamicModuleWithSpec () from /usr/pkg/lib/libpython3.7.so.1.0
#17 0x000073f26e53c1d8 in _imp_create_dynamic () from /usr/pkg/lib/libpython3.7.so.1.0
#18 0x000073f26e4826af in _PyMethodDef_RawFastCallDict () from /usr/pkg/lib/libpython3.7.so.1.0
#19 0x000073f26e48277a in _PyCFunction_FastCallDict () from /usr/pkg/lib/libpython3.7.so.1.0
#20 0x000073f26e5c08c8 in _PyEval_EvalFrameDefault () from /usr/pkg/lib/libpython3.7.so.1.0
#21 0x000073f26e5262de in _PyEval_EvalCodeWithName () from /usr/pkg/lib/libpython3.7.so.1.0
#22 0x000073f26e481af9 in _PyFunction_FastCallKeywords () from /usr/pkg/lib/libpython3.7.so.1.0
#23 0x000073f26e5b87d2 in call_function () from /usr/pkg/lib/libpython3.7.so.1.0
#24 0x000073f26e5bf90a in _PyEval_EvalFrameDefault () from /usr/pkg/lib/libpython3.7.so.1.0
#25 0x000073f26e5b76e8 in function_code_fastcall () from /usr/pkg/lib/libpython3.7.so.1.0
#26 0x000073f26e5b87d2 in call_function () from /usr/pkg/lib/libpython3.7.so.1.0
#27 0x000073f26e5be0c1 in _PyEval_EvalFrameDefault () from /usr/pkg/lib/libpython3.7.so.1.0
#28 0x000073f26e5b76e8 in function_code_fastcall () from /usr/pkg/lib/libpython3.7.so.1.0
#29 0x000073f26e5b87d2 in call_function () from /usr/pkg/lib/libpython3.7.so.1.0
#30 0x000073f26e5bd1c0 in _PyEval_EvalFrameDefault () from /usr/pkg/lib/libpython3.7.so.1.0
#31 0x000073f26e5b76e8 in function_code_fastcall () from /usr/pkg/lib/libpython3.7.so.1.0
#32 0x000073f26e5b87d2 in call_function () from /usr/pkg/lib/libpython3.7.so.1.0
#33 0x000073f26e5bd1c0 in _PyEval_EvalFrameDefault () from /usr/pkg/lib/libpython3.7.so.1.0
#34 0x000073f26e5b76e8 in function_code_fastcall () from /usr/pkg/lib/libpython3.7.so.1.0
#35 0x000073f26e5b87d2 in call_function () from /usr/pkg/lib/libpython3.7.so.1.0
#36 0x000073f26e5bd1c0 in _PyEval_EvalFrameDefault () from /usr/pkg/lib/libpython3.7.so.1.0
#37 0x000073f26e5b76e8 in function_code_fastcall () from /usr/pkg/lib/libpython3.7.so.1.0
#38 0x000073f26e483487 in object_vacall () from /usr/pkg/lib/libpython3.7.so.1.0
#39 0x000073f26e483730 in _PyObject_CallMethodIdObjArgs () from /usr/pkg/lib/libpython3.7.so.1.0
#40 0x000073f26e53d104 in PyImport_ImportModuleLevelObject () from /usr/pkg/lib/libpython3.7.so.1.0
#41 0x000073f26e5c0a21 in _PyEval_EvalFrameDefault () from /usr/pkg/lib/libpython3.7.so.1.0
#42 0x000073f26e5262de in _PyEval_EvalCodeWithName () from /usr/pkg/lib/libpython3.7.so.1.0
#43 0x000073f26e526576 in PyEval_EvalCodeEx () from /usr/pkg/lib/libpython3.7.so.1.0
#44 0x000073f26e5265c0 in PyEval_EvalCode () from /usr/pkg/lib/libpython3.7.so.1.0
#45 0x000073f26e54ef3a in run_mod () from /usr/pkg/lib/libpython3.7.so.1.0
#46 0x000073f26e55076e in PyRun_StringFlags () from /usr/pkg/lib/libpython3.7.so.1.0
#47 0x000073f26e5507cc in PyRun_SimpleStringFlags () from /usr/pkg/lib/libpython3.7.so.1.0
#48 0x000073f26e56c4fd in pymain_main () from /usr/pkg/lib/libpython3.7.so.1.0
#49 0x000073f26e56cd26 in _Py_UnixMain () from /usr/pkg/lib/libpython3.7.so.1.0
#50 0x00000000f0000aad in _start ()
@hellium6
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hellium6 commented Jul 5, 2024

It seems I reached a dead end with this.

Trial #2: openssl-lib and openssl-include

Adding these args didn't help:

$ python3.7 setup.py build_ext --b2-args="toolset=gcc-test variant=debug crypto=openssl openssl-lib=/usr/local/custom/lib openssl-include=/usr/local/custom/include cxxflags=-I/usr/local/custom/include cxxflags=-L/usr/local/custom/lib cxxflags=-Wl,-R/usr/local/custom/lib cxxflags=-L/usr/pkg/lib library-path=/usr/local/custom/lib" install --prefix=~/.local
...
Adding libtorrent 0.0.0 to easy-install.pth file

Installed /home/user/.local/lib/python3.7/site-packages/libtorrent-0.0.0-py3.7-netbsd-10.0-amd64.egg
Processing dependencies for libtorrent==0.0.0
Finished processing dependencies for libtorrent==0.0.0
$ ldd /home/user/.local/lib/python3.7/site-packages/libtorrent-0.0.0-py3.7-netbsd-10.0-amd64.egg/libtorrent/__init__.so
/home/user/.local/lib/python3.7/site-packages/libtorrent-0.0.0-py3.7-netbsd-10.0-amd64.egg/libtorrent/__init__.so:
	-lssl.1.1 => /usr/local/custom/lib/libssl.so.1.1
	-lcrypto.1.1 => /usr/local/custom/lib/libcrypto.so.1.1
	-lpthread.1 => /usr/lib/libpthread.so.1
	-lc.12 => /usr/lib/libc.so.12
	-lutil.7 => /usr/lib/libutil.so.7
	-lstdc++.9 => /usr/lib/libstdc++.so.9
	-lm.0 => /usr/lib/libm.so.0
	-lgcc_s.1 => /usr/lib/libgcc_s.so.1
$ python3.7 -c 'import libtorrent'
Abort trap (core dumped)  # with similar bt

Before trying this out, I did another trial reverting the change (III) and trying the same command. It didn't work properly:

$ ldd /home/user/.local/lib/python3.7/site-packages/libtorrent-0.0.0-py3.7-netbsd-10.0-amd64.egg/libtorrent/__init__.so 
/home/user/.local/lib/python3.7/site-packages/libtorrent-0.0.0-py3.7-netbsd-10.0-amd64.egg/libtorrent/__init__.so:
	-lssl.3 => not found
	-lcrypto.3 => not found
	-lpthread.1 => /usr/lib/libpthread.so.1
	-lc.12 => /usr/lib/libc.so.12
	-lutil.7 => /usr/lib/libutil.so.7
	-lstdc++.9 => /usr/lib/libstdc++.so.9
	-lm.0 => /usr/lib/libm.so.0
	-lgcc_s.1 => /usr/lib/libgcc_s.so.1

So I came back to the state with change (III) applied as in first post.

Trial #3: Building Python with OpenSSL 1.x

I wanted to test if the crash was due to python 3.7 system package being built with OpenSSL (3.x) and using another version of OpenSSL (1.1.1w) for libtorrent. I have to use 1.x because the project I'm trying to build requires cryptography==2.5 and it doesn't work with OpenSSL 3.x. So I built python 3.7.17 (debug) from source, using -with-openssl= arg to use 1.1.1w.

Result:

$ python3.7 -c "import ssl; print(ssl.OPENSSL_VERSION)"  # installed through pkgsrc
OpenSSL 3.0.12 24 Oct 2023
$ /usr/local/python37/bin/python3.7 -c "import ssl; print(ssl.OPENSSL_VERSION)"  # built from source
OpenSSL 1.1.1w  11 Sep 2023
$ /usr/local/python37/bin/python3.7 -m sysconfig | grep ABIFLAGS
	ABIFLAGS = "dm"

Changed the using python : 3.7 ; line in user-config.jam to:

using python : 3.7 : /usr/local/python37 : /usr/local/python37/include/python3.7dm :  : <python-debugging>on ;

Then:

/usr/local/python37/bin/python3.7 setup.py build_ext --b2-args="toolset=gcc-test variant=debug crypto=openssl openssl-lib=/usr/local/custom/lib openssl-include=/usr/local/custom/include cxxflags=-I/usr/local/custom/include cxxflags=-L/usr/local/custom/lib cxxflags=-Wl,-R/usr/local/custom/lib cxxflags=-L/usr/pkg/lib library-path=/usr/local/custom/lib" install --prefix=~/.local

The crash remains as is.

$ /usr/local/python37/bin/python3.7 -c 'import libtorrent'
Abort trap (core dumped)
gdb bt here 
$ gdb -ex 'set pagination off' -ex 'backtrace' -ex 'quit' /usr/local/python37/bin/python3.7 python3.7.core 
GNU gdb (GDB) 11.0.50.20200914-git
...
Reading symbols from /usr/local/python37/bin/python3.7...
[New process 17697]
Core was generated by `python3.7'.
Program terminated with signal SIGABRT, Aborted.
#0  0x00007ca413b7e74a in _lwp_kill () from /usr/lib/libc.so.12
#0  0x00007ca413b7e74a in _lwp_kill () from /usr/lib/libc.so.12
#1  0x00007ca413a48fa4 in __libc_mutex_unlock_stub () from /usr/lib/libc.so.12
#2  0x00007ca411b78233 in __gthread_active_p () at /usr/include/g++/bits/gthr-posix.h:201
#3  0x00007ca41200bf22 in __gnu_cxx::__atomic_add_dispatch (__val=1, __mem=0x7ca415a61548) at /usr/include/g++/ext/atomicity.h:94
#4  std::_Sp_counted_base<(__gnu_cxx::_Lock_policy)2>::_M_add_ref_copy (this=0x7ca415a61540) at /usr/include/g++/bits/shared_ptr_base.h:142
#5  0x00007ca41200b7cd in std::__shared_count<(__gnu_cxx::_Lock_policy)2>::__shared_count (this=0x7ca412ef9a08 <boost::asio::ssl::detail::openssl_init<true>::instance_+8>, __r=...) at /usr/include/g++/bits/shared_ptr_base.h:743
#6  0x00007ca412024d9d in std::__shared_ptr<boost::asio::ssl::detail::openssl_init_base::do_init, (__gnu_cxx::_Lock_policy)2>::__shared_ptr (this=0x7ca412ef9a00 <boost::asio::ssl::detail::openssl_init<true>::instance_>) at /usr/include/g++/bits/shared_ptr_base.h:1186
#7  0x00007ca412024dc7 in std::shared_ptr<boost::asio::ssl::detail::openssl_init_base::do_init>::shared_ptr (this=0x7ca412ef9a00 <boost::asio::ssl::detail::openssl_init<true>::instance_>) at /usr/include/g++/bits/shared_ptr.h:149
#8  0x00007ca412024e77 in boost::asio::ssl::detail::openssl_init_base::instance () at /home/user/test/boost-1.84.0/boost/asio/ssl/detail/impl/openssl_init.ipp:152
#9  0x00007ca412026131 in boost::asio::ssl::detail::openssl_init<true>::openssl_init (this=0x7ca412ef9a00 <boost::asio::ssl::detail::openssl_init<true>::instance_>) at /home/user/test/boost-1.84.0/boost/asio/ssl/detail/openssl_init.hpp:60
#10 0x00007ca411b798f9 in __static_initialization_and_destruction_0 (__initialize_p=1, __priority=65535) at /home/user/test/boost-1.84.0/boost/asio/ssl/detail/openssl_init.hpp:90
#11 0x00007ca411b79cbc in _GLOBAL__sub_I_converters.cpp(void) () at src/converters.cpp:559
#12 0x00007f7e77606416 in _rtld_call_init_function () from /usr/libexec/ld.elf_so
#13 0x00007f7e7760675c in _rtld_call_init_functions () from /usr/libexec/ld.elf_so
#14 0x00007f7e77607698 in dlopen () from /usr/libexec/ld.elf_so
#15 0x00007ca4155d9e3f in _PyImport_FindSharedFuncptr (prefix=0x7ca415692a17 "PyInit", shortname=shortname@entry=0x7ca414f3ea90 "libtorrent", pathname=pathname@entry=0x7ca414f3fd70 "/home/user/.local/lib/python3.7/site-packages/libtorrent-0.0.0-py3.7-netbsd-10.0-amd64.egg/libtorrent/__init__.so", fp=fp@entry=0x0) at ../Python/dynload_shlib.c:96
#16 0x00007ca4155a9157 in _PyImport_LoadDynamicModuleWithSpec (spec=spec@entry=0x7ca414f59920, fp=fp@entry=0x0) at ../Python/importdl.c:129
#17 0x00007ca4155a6c0b in _imp_create_dynamic_impl (module=module@entry=0x7ca41537d8d0, spec=0x7ca414f59920, file=<optimized out>) at ../Python/import.c:2174
#18 0x00007ca4155a6e03 in _imp_create_dynamic (module=module@entry=0x7ca41537d8d0, args=args@entry=0x7ca414ffb6a8, nargs=nargs@entry=1) at ../Python/clinic/import.c.h:289
#19 0x00007ca41548eabe in _PyMethodDef_RawFastCallDict (method=0x7ca415939c60 <imp_methods+320>, self=0x7ca41537d8d0, args=args@entry=0x7ca414ffb6a8, nargs=1, kwargs=0x7ca414fe9060) at ../Objects/call.c:530
#20 0x00007ca41548ecc3 in _PyCFunction_FastCallDict (func=func@entry=0x7ca41531d060, args=args@entry=0x7ca414ffb6a8, nargs=<optimized out>, kwargs=kwargs@entry=0x7ca414fe9060) at ../Objects/call.c:585
#21 0x00007ca41548fe1d in PyCFunction_Call (func=func@entry=0x7ca41531d060, args=args@entry=0x7ca414ffb680, kwargs=kwargs@entry=0x7ca414fe9060) at ../Objects/call.c:789
#22 0x00007ca41557a15b in do_call_core (func=func@entry=0x7ca41531d060, callargs=callargs@entry=0x7ca414ffb680, kwdict=kwdict@entry=0x7ca414fe9060) at ../Python/ceval.c:4641
#23 0x00007ca41558840f in _PyEval_EvalFrameDefault (f=0x7ca414f4e060, throwflag=<optimized out>) at ../Python/ceval.c:3191
#24 0x00007ca41557b95b in PyEval_EvalFrameEx (f=f@entry=0x7ca414f4e060, throwflag=throwflag@entry=0) at ../Python/ceval.c:547
#25 0x00007ca41557c464 in _PyEval_EvalCodeWithName (_co=0x7ca4153037c0, globals=<optimized out>, locals=locals@entry=0x0, args=args@entry=0x7ca41599ba60, argcount=2, kwnames=0x0, kwargs=kwargs@entry=0x7ca41599ba70, kwcount=0, kwstep=kwstep@entry=1, defs=defs@entry=0x0, defcount=0, kwdefs=kwdefs@entry=0x0, closure=closure@entry=0x0, name=name@entry=0x7ca4153046c0, qualname=0x7ca4153046c0) at ../Python/ceval.c:3930
#26 0x00007ca41548d88d in _PyFunction_FastCallKeywords (func=func@entry=0x7ca41531f360, stack=stack@entry=0x7ca41599ba60, nargs=nargs@entry=2, kwnames=kwnames@entry=0x0) at ../Objects/call.c:433
#27 0x00007ca41557a924 in call_function (pp_stack=pp_stack@entry=0x7f7fffc9c770, oparg=oparg@entry=2, kwnames=kwnames@entry=0x0) at ../Python/ceval.c:4616
#28 0x00007ca415587e79 in _PyEval_EvalFrameDefault (f=0x7ca41599b8c0, throwflag=<optimized out>) at ../Python/ceval.c:3093
#29 0x00007ca41557b95b in PyEval_EvalFrameEx (f=f@entry=0x7ca41599b8c0, throwflag=throwflag@entry=0) at ../Python/ceval.c:547
#30 0x00007ca41548cc85 in function_code_fastcall (co=<optimized out>, args=0x7ca4153239c0, nargs=nargs@entry=2, globals=<optimized out>) at ../Objects/call.c:283
#31 0x00007ca41548d7f5 in _PyFunction_FastCallKeywords (func=func@entry=0x7ca4152d88a0, stack=stack@entry=0x7ca4153239b0, nargs=nargs@entry=2, kwnames=kwnames@entry=0x0) at ../Objects/call.c:408
#32 0x00007ca41557a924 in call_function (pp_stack=pp_stack@entry=0x7f7fffc9c9c0, oparg=oparg@entry=2, kwnames=kwnames@entry=0x0) at ../Python/ceval.c:4616
#33 0x00007ca415587da9 in _PyEval_EvalFrameDefault (f=0x7ca415323820, throwflag=<optimized out>) at ../Python/ceval.c:3110
#34 0x00007ca41557b95b in PyEval_EvalFrameEx (f=f@entry=0x7ca415323820, throwflag=throwflag@entry=0) at ../Python/ceval.c:547
#35 0x00007ca41548cc85 in function_code_fastcall (co=<optimized out>, args=0x7ca414efe758, nargs=nargs@entry=1, globals=<optimized out>) at ../Objects/call.c:283
#36 0x00007ca41548d7f5 in _PyFunction_FastCallKeywords (func=func@entry=0x7ca4153212a0, stack=stack@entry=0x7ca414efe750, nargs=nargs@entry=1, kwnames=kwnames@entry=0x0) at ../Objects/call.c:408
#37 0x00007ca41557a924 in call_function (pp_stack=pp_stack@entry=0x7f7fffc9cc18, oparg=oparg@entry=1, kwnames=kwnames@entry=0x0) at ../Python/ceval.c:4616
#38 0x00007ca415587ef5 in _PyEval_EvalFrameDefault (f=0x7ca414efe5c0, throwflag=<optimized out>) at ../Python/ceval.c:3124
#39 0x00007ca41557b95b in PyEval_EvalFrameEx (f=f@entry=0x7ca414efe5c0, throwflag=throwflag@entry=0) at ../Python/ceval.c:547
#40 0x00007ca41548cc85 in function_code_fastcall (co=<optimized out>, args=0x7ca414efe508, nargs=nargs@entry=1, globals=<optimized out>) at ../Objects/call.c:283
#41 0x00007ca41548d7f5 in _PyFunction_FastCallKeywords (func=func@entry=0x7ca4153215a0, stack=stack@entry=0x7ca414efe500, nargs=nargs@entry=1, kwnames=kwnames@entry=0x0) at ../Objects/call.c:408
#42 0x00007ca41557a924 in call_function (pp_stack=pp_stack@entry=0x7f7fffc9ce68, oparg=oparg@entry=1, kwnames=kwnames@entry=0x0) at ../Python/ceval.c:4616
#43 0x00007ca415587ef5 in _PyEval_EvalFrameDefault (f=0x7ca414efe340, throwflag=<optimized out>) at ../Python/ceval.c:3124
#44 0x00007ca41557b95b in PyEval_EvalFrameEx (f=f@entry=0x7ca414efe340, throwflag=throwflag@entry=0) at ../Python/ceval.c:547
#45 0x00007ca41548cc85 in function_code_fastcall (co=<optimized out>, args=0x7ca414efe278, nargs=nargs@entry=2, globals=<optimized out>) at ../Objects/call.c:283
#46 0x00007ca41548d7f5 in _PyFunction_FastCallKeywords (func=func@entry=0x7ca415325de0, stack=stack@entry=0x7ca414efe268, nargs=nargs@entry=2, kwnames=kwnames@entry=0x0) at ../Objects/call.c:408
#47 0x00007ca41557a924 in call_function (pp_stack=pp_stack@entry=0x7f7fffc9d0b8, oparg=oparg@entry=2, kwnames=kwnames@entry=0x0) at ../Python/ceval.c:4616
#48 0x00007ca415587ef5 in _PyEval_EvalFrameDefault (f=0x7ca414efe0c0, throwflag=<optimized out>) at ../Python/ceval.c:3124
#49 0x00007ca41557b95b in PyEval_EvalFrameEx (f=f@entry=0x7ca414efe0c0, throwflag=throwflag@entry=0) at ../Python/ceval.c:547
#50 0x00007ca41548cc85 in function_code_fastcall (co=co@entry=0x7ca415313d00, args=0x7f7fffc9d2f0, args@entry=0x7f7fffc9d2e0, nargs=nargs@entry=2, globals=globals@entry=0x7ca41531aa60) at ../Objects/call.c:283
#51 0x00007ca41548d4a4 in _PyFunction_FastCallDict (func=func@entry=0x7ca415325ea0, args=args@entry=0x7f7fffc9d2e0, nargs=nargs@entry=2, kwargs=kwargs@entry=0x0) at ../Objects/call.c:322
#52 0x00007ca41548eeec in _PyObject_FastCallDict (callable=callable@entry=0x7ca415325ea0, args=args@entry=0x7f7fffc9d2e0, nargs=nargs@entry=2, kwargs=kwargs@entry=0x0) at ../Objects/call.c:98
#53 0x00007ca41548fb1b in object_vacall (callable=callable@entry=0x7ca415325ea0, vargs=vargs@entry=0x7f7fffc9d348) at ../Objects/call.c:1200
#54 0x00007ca41548fcff in _PyObject_CallMethodIdObjArgs (obj=<optimized out>, name=name@entry=0x7ca4159398e0 <PyId__find_and_load.9>) at ../Objects/call.c:1250
#55 0x00007ca4155a4ad9 in import_find_and_load (abs_name=abs_name@entry=0x7ca414fe2970) at ../Python/import.c:1652
#56 0x00007ca4155a7fba in PyImport_ImportModuleLevelObject (name=name@entry=0x7ca414fe2970, globals=<optimized out>, locals=<optimized out>, fromlist=fromlist@entry=0x7ca415921a40 <_Py_NoneStruct>, level=level@entry=0) at ../Python/import.c:1764
#57 0x00007ca415579399 in import_name (f=f@entry=0x7ca41599b3c0, name=name@entry=0x7ca414fe2970, fromlist=fromlist@entry=0x7ca415921a40 <_Py_NoneStruct>, level=level@entry=0x7ca415970a10 <small_ints+240>) at ../Python/ceval.c:4770
#58 0x00007ca415585ad0 in _PyEval_EvalFrameDefault (f=0x7ca41599b3c0, throwflag=<optimized out>) at ../Python/ceval.c:2600
#59 0x00007ca41557b95b in PyEval_EvalFrameEx (f=f@entry=0x7ca41599b3c0, throwflag=throwflag@entry=0) at ../Python/ceval.c:547
#60 0x00007ca41557c464 in _PyEval_EvalCodeWithName (_co=0x7ca414f4c880, globals=<optimized out>, locals=<optimized out>, args=<optimized out>, argcount=argcount@entry=0, kwnames=0x0, kwargs=0x0, kwcount=kwcount@entry=0, kwstep=kwstep@entry=2, defs=defs@entry=0x0, defcount=defcount@entry=0, kwdefs=kwdefs@entry=0x0, closure=closure@entry=0x0, name=name@entry=0x0, qualname=qualname@entry=0x0) at ../Python/ceval.c:3930
#61 0x00007ca41557c62a in PyEval_EvalCodeEx (_co=_co@entry=0x7ca414f4c880, globals=globals@entry=0x7ca415277160, locals=locals@entry=0x7ca415277160, args=args@entry=0x0, argcount=argcount@entry=0, kws=kws@entry=0x0, kwcount=kwcount@entry=0, defs=0x0, defcount=0, kwdefs=0x0, closure=0x0) at ../Python/ceval.c:3959
#62 0x00007ca41557c67e in PyEval_EvalCode (co=co@entry=0x7ca414f4c880, globals=globals@entry=0x7ca415277160, locals=locals@entry=0x7ca415277160) at ../Python/ceval.c:524
#63 0x00007ca4155be3e1 in run_mod (mod=mod@entry=0x7ca4159ba0a8, filename=filename@entry=0x7ca414fe2740, globals=globals@entry=0x7ca415277160, locals=locals@entry=0x7ca415277160, flags=flags@entry=0x7f7fffc9d8dc, arena=arena@entry=0x7ca415287700) at ../Python/pythonrun.c:1037
#64 0x00007ca4155c083b in PyRun_StringFlags (str=str@entry=0x7ca414fe2700 "import libtorrent\n", start=start@entry=257, globals=0x7ca415277160, locals=0x7ca415277160, flags=flags@entry=0x7f7fffc9d8dc) at ../Python/pythonrun.c:961
#65 0x00007ca4155c08a2 in PyRun_SimpleStringFlags (command=0x7ca414fe2700 "import libtorrent\n", flags=flags@entry=0x7f7fffc9d8dc) at ../Python/pythonrun.c:455
#66 0x00007ca4155de162 in pymain_run_command (command=<optimized out>, cf=cf@entry=0x7f7fffc9d8dc) at ../Modules/main.c:422
#67 0x00007ca4155deda8 in pymain_run_python (pymain=pymain@entry=0x7f7fffc9d920) at ../Modules/main.c:2958
#68 0x00007ca4155e2a81 in pymain_main (pymain=pymain@entry=0x7f7fffc9d920) at ../Modules/main.c:3125
#69 0x00007ca4155e2b07 in _Py_UnixMain (argc=<optimized out>, argv=<optimized out>) at ../Modules/main.c:3160
#70 0x0000000000400b03 in main (argc=<optimized out>, argv=<optimized out>) at ../Programs/python.c:15

Trial #4: crypto=wolfssl

# latest release is 5.7.0 at this time
curl -LO https://github.com/wolfSSL/wolfssl/archive/refs/tags/v5.7.0-stable.tar.gz
tar -xvf v5.7.0-stable.tar.gz
cd wolfssl-5.7.0-stable
./autogen.sh
./configure --enable-sni --enable-asio --enable-nginx --enable-opensslextra --enable-static --enable-debug --prefix=/usr/local/custom
gmake
doas sh -c 'gmake install'  # only doas doesn't work

Install:

cd ../libtorrent-rasterbar-2.0.10
python3.7 setup.py build_ext --b2-args="toolset=gcc-test crypto=wolfssl" install --prefix=~/.local
$ python3.7 -c 'import libtorrent'
Traceback (most recent call last):
  File "<string>", line 1, in <module>
ImportError: /home/user/.local/lib/python3.7/site-packages/libtorrent-0.0.0-py3.7-netbsd-10.0-amd64.egg/libtorrent/__init__.so: Undefined PLT symbol "SSL_CTX_free" (symnum = 15)

Trial #5

This time I tried to test libtorrent 2.0.6, in my expected venv, py 3.7 (debug, built from source with OpenSSL 1.x to see if it fixes anything), with crypto=built-in:

user-config.jam

using python : 3.7 : /usr/local/python37 : /usr/local/python37/include/python3.7dm : /usr/local/python37/lib/python3.7 : <python-debugging>on ;
using gcc : simpletest : g++ : <cxxflags>-std=gnu++14 <cxxflags>-fext-numeric-literals <cxxflags>-fPIC ;

$ realpath $VIRTUAL_ENV/bin/python
/usr/local/python37/bin/python3.7
$ python setup.py build_ext --b2-args="toolset=gcc-simpletest variant=debug boost-link=static libtorrent-link=static crypto=built-in" install
...
...
$ ldd /home/user/Codes/lbry-sdk/lbry-venv/lib/python3.7/site-packages/libtorrent-2.0.6-py3.7-netbsd-10.0-amd64.egg/libtorrent.so 
/home/user/Codes/lbry-sdk/lbry-venv/lib/python3.7/site-packages/libtorrent-2.0.6-py3.7-netbsd-10.0-amd64.egg/libtorrent.so:
	-lpthread.1 => /usr/lib/libpthread.so.1
	-lc.12 => /usr/lib/libc.so.12
	-lutil.7 => /usr/lib/libutil.so.7
	-lstdc++.9 => /usr/lib/libstdc++.so.9
	-lm.0 => /usr/lib/libm.so.0
	-lgcc_s.1 => /usr/lib/libgcc_s.so.1

It got rid of the crash during import. It crashed later instead:

$ python -c 'import libtorrent'  # <- no crash
$ lbrynet start
...
2024-07-04 18:45:53,002 INFO     lbry.extras.daemon.daemon:489: Starting LBRYNet Daemon
2024-07-04 18:45:53,012 INFO     lbry.extras.daemon.daemon:491: Platform: {
  "processor": "x86_64",
  "python_version": "3.7.17",
  "platform": "NetBSD-10.0-amd64-x86_64-64bit-ELF",
  "os_release": "10.0",
  "os_system": "NetBSD",
  "lbrynet_version": "0.113.0",
  "version": "0.113.0",
  "build": "dev"
}
2024-07-04 18:45:53,022 INFO     lbry.extras.daemon.daemon:501: RPC server listening on TCP ::1:5279
2024-07-04 18:45:53,032 INFO     lbry.extras.daemon.daemon:511: media server listening on TCP 127.0.0.1:5280
Abort trap (core dumped)
gdb bt here 
$ gdb -q -ex 'set pagination off' -ex 'backtrace' -ex 'quit' `which python3.7` python3.7.core
Reading symbols from /home/user/Codes/lbry-sdk/lbry-venv/bin/python3.7...
[New process 3721]
[New process 16096]
[New process 23388]
[New process 17591]
Core was generated by `python3.7'.
Program terminated with signal SIGABRT, Aborted.
#0  0x00007bf43717e74a in _lwp_kill () from /usr/lib/libc.so.12
[Current thread is 1 (process 3721)]
#0  0x00007bf43717e74a in _lwp_kill () from /usr/lib/libc.so.12
#1  0x00007bf437048fa4 in __libc_mutex_unlock_stub () from /usr/lib/libc.so.12
#2  0x00007bf426edce4e in __gthread_active_p () at /usr/include/g++/bits/gthr-posix.h:201
#3  0x00007bf427154f60 in __gnu_cxx::__atomic_add_dispatch (__val=1, __mem=0x7bf42e74e008) at /usr/include/g++/ext/atomicity.h:94
#4  std::_Sp_counted_base<(__gnu_cxx::_Lock_policy)2>::_M_add_ref_copy (this=0x7bf42e74e000) at /usr/include/g++/bits/shared_ptr_base.h:142
#5  0x00007bf42715480b in std::__shared_count<(__gnu_cxx::_Lock_policy)2>::__shared_count (this=0x7bf42e751098, __r=...) at /usr/include/g++/bits/shared_ptr_base.h:743
#6  0x00007bf4274245e7 in std::__shared_ptr<libtorrent::plugin, (__gnu_cxx::_Lock_policy)2>::__shared_ptr (this=0x7bf42e751090) at /usr/include/g++/bits/shared_ptr_base.h:1186
#7  0x00007bf427424611 in std::shared_ptr<libtorrent::plugin>::shared_ptr (this=0x7bf42e751090) at /usr/include/g++/bits/shared_ptr.h:149
#8  0x00007bf427424653 in std::_Construct<std::shared_ptr<libtorrent::plugin>, std::shared_ptr<libtorrent::plugin> const&> (__p=0x7bf42e751090) at /usr/include/g++/bits/stl_construct.h:109
#9  0x00007bf42742452b in std::__uninitialized_copy<false>::__uninit_copy<std::shared_ptr<libtorrent::plugin> const*, std::shared_ptr<libtorrent::plugin>*> (__first=0x7bf424ffe8d0, __last=0x7bf424ffe900, __result=0x7bf42e751090) at /usr/include/g++/bits/stl_uninitialized.h:91
#10 0x00007bf4274237cc in std::uninitialized_copy<std::shared_ptr<libtorrent::plugin> const*, std::shared_ptr<libtorrent::plugin>*> (__first=0x7bf424ffe8d0, __last=0x7bf424ffe900, __result=0x7bf42e751090) at /usr/include/g++/bits/stl_uninitialized.h:150
#11 0x00007bf427422665 in std::__uninitialized_copy_a<std::shared_ptr<libtorrent::plugin> const*, std::shared_ptr<libtorrent::plugin>*, std::shared_ptr<libtorrent::plugin> > (__first=0x7bf424ffe8d0, __last=0x7bf424ffe900, __result=0x7bf42e751090) at /usr/include/g++/bits/stl_uninitialized.h:325
#12 0x00007bf4274214a8 in std::vector<std::shared_ptr<libtorrent::plugin>, std::allocator<std::shared_ptr<libtorrent::plugin> > >::_M_range_initialize<std::shared_ptr<libtorrent::plugin> const*> (this=0x7bf424ffe980, __first=0x7bf424ffe8d0, __last=0x7bf424ffe900) at /usr/include/g++/bits/stl_vector.h:1585
#13 0x00007bf427420163 in std::vector<std::shared_ptr<libtorrent::plugin>, std::allocator<std::shared_ptr<libtorrent::plugin> > >::vector (this=0x7bf424ffe980, __l=..., __a=...) at /usr/include/g++/bits/stl_vector.h:629
#14 0x00007bf426f6b828 in libtorrent::(anonymous namespace)::default_plugins (empty=false) at ../../src/session_params.cpp:55
#15 0x00007bf426f6b92a in libtorrent::session_params::session_params (this=0x7bf424ffe9e0, sp=...) at ../../src/session_params.cpp:67
#16 0x00007bf426ee805a in (anonymous namespace)::make_session (sett=..., flags=...) at src/session.cpp:201
#17 0x00007bf42722e8b1 in boost::python::detail::invoke<boost::python::detail::install_holder<std::shared_ptr<libtorrent::session> >, std::shared_ptr<libtorrent::session> (*)(boost::python::dict, libtorrent::flags::bitfield_flag<unsigned char, libtorrent::session_flags_tag, void>), boost::python::arg_from_python<boost::python::dict>, boost::python::arg_from_python<libtorrent::flags::bitfield_flag<unsigned char, libtorrent::session_flags_tag, void> > > (rc=..., f=@0x7bf42f6130d8: 0x7bf426ee7fc3 <(anonymous namespace)::make_session(boost::python::dict, libtorrent::session_flags_t)>, ac0=..., ac1=...) at /home/user/Codes/boost-1.84.0/boost/python/detail/invoke.hpp:73
#18 0x00007bf42721cd4c in boost::python::detail::caller_arity<2u>::impl<std::shared_ptr<libtorrent::session> (*)(boost::python::dict, libtorrent::flags::bitfield_flag<unsigned char, libtorrent::session_flags_tag, void>), boost::python::detail::constructor_policy<boost::python::default_call_policies>, boost::mpl::vector3<std::shared_ptr<libtorrent::session>, boost::python::dict, libtorrent::flags::bitfield_flag<unsigned char, libtorrent::session_flags_tag, void> > >::operator() (this=0x7bf42f6130d8, args_=0x7bf42e7a3b60) at /home/user/Codes/boost-1.84.0/boost/python/detail/caller.hpp:233
#19 0x00007bf42720e8c1 in boost::python::objects::signature_py_function_impl<boost::python::detail::caller<std::shared_ptr<libtorrent::session> (*)(boost::python::dict, libtorrent::flags::bitfield_flag<unsigned char, libtorrent::session_flags_tag, void>), boost::python::detail::constructor_policy<boost::python::default_call_policies>, boost::mpl::vector3<std::shared_ptr<libtorrent::session>, boost::python::dict, libtorrent::flags::bitfield_flag<unsigned char, libtorrent::session_flags_tag, void> > >, boost::mpl::v_item<void, boost::mpl::v_item<boost::python::api::object, boost::mpl::v_mask<boost::mpl::vector3<std::shared_ptr<libtorrent::session>, boost::python::dict, libtorrent::flags::bitfield_flag<unsigned char, libtorrent::session_flags_tag, void> >, 1>, 1>, 1> >::operator() (this=0x7bf42f6130d0, args=0x7bf42e7a3b60, kw=0x7bf42e7a8260) at /home/user/Codes/boost-1.84.0/boost/python/object/py_function.hpp:64
#20 0x00007bf4273ae53d in boost::python::objects::py_function::operator() (this=0x7bf42ee1cf20, args=0x7bf42e7a3b60, kw=0x7bf42e7a8260) at /home/user/Codes/boost-1.84.0/boost/python/object/py_function.hpp:147
#21 0x00007bf426f19959 in boost::python::objects::function::call (this=0x7bf42ee1cf60, args=0x7bf42eab6260, keywords=0x7bf42e7a8260) at /home/user/Codes/boost-1.84.0/libs/python/src/object/function.cpp:221
#22 0x00007bf426f1aee9 in boost::python::objects::(anonymous namespace)::bind_return::operator() (this=0x7bf424ffefb0) at /home/user/Codes/boost-1.84.0/libs/python/src/object/function.cpp:581
#23 0x00007bf426f1b91c in boost::detail::function::void_function_ref_invoker0<boost::python::objects::(anonymous namespace)::bind_return, void>::invoke (function_obj_ptr=...) at /home/user/Codes/boost-1.84.0/boost/function/function_template.hpp:193
#24 0x00007bf4273b92ae in boost::function0<void>::operator() (this=0x7bf424ffef60) at /home/user/Codes/boost-1.84.0/boost/function/function_template.hpp:771
#25 0x00007bf426f273b2 in boost::python::handle_exception_impl (f=...) at /home/user/Codes/boost-1.84.0/libs/python/src/errors.cpp:25
#26 0x00007bf426f1b5ae in boost::python::handle_exception<boost::python::objects::(anonymous namespace)::bind_return> (f=...) at /home/user/Codes/boost-1.84.0/boost/python/errors.hpp:29
#27 0x00007bf426f1affd in boost::python::objects::function_call (func=0x7bf42ee1cf60, args=0x7bf42eab6260, kw=0x7bf42e7a8260) at /home/user/Codes/boost-1.84.0/libs/python/src/object/function.cpp:622
#28 0x00007bf438a8edb6 in _PyObject_FastCallDict (callable=callable@entry=0x7bf42ee1cf60, args=args@entry=0x7bf424fff090, nargs=nargs@entry=2, kwargs=kwargs@entry=0x7bf42e7a8260) at ../Objects/call.c:125
#29 0x00007bf438a8f124 in _PyObject_Call_Prepend (callable=0x7bf42ee1cf60, obj=obj@entry=0x7bf42e7a99e0, args=0x7bf4340605a0, kwargs=0x7bf42e7a8260) at ../Objects/call.c:906
#30 0x00007bf438a90c77 in method_call (method=<optimized out>, args=<optimized out>, kwargs=<optimized out>) at ../Objects/classobject.c:309
#31 0x00007bf438a8fef8 in PyObject_Call (callable=callable@entry=0x7bf42f24b460, args=args@entry=0x7bf4340605a0, kwargs=kwargs@entry=0x7bf42e7a8260) at ../Objects/call.c:245
#32 0x00007bf438af7070 in slot_tp_init (self=0x7bf42e7a99e0, args=0x7bf4340605a0, kwds=0x7bf42e7a8260) at ../Objects/typeobject.c:6639
#33 0x00007bf438af4473 in type_call (type=<optimized out>, args=0x7bf4340605a0, kwds=0x7bf42e7a8260) at ../Objects/typeobject.c:971
#34 0x00007bf438a8fef8 in PyObject_Call (callable=callable@entry=0x7bf42ee1a040, args=args@entry=0x7bf4340605a0, kwargs=kwargs@entry=0x7bf42e7a8260) at ../Objects/call.c:245
#35 0x00007bf438b7a035 in do_call_core (func=func@entry=0x7bf42ee1a040, callargs=callargs@entry=0x7bf4340605a0, kwdict=kwdict@entry=0x7bf42e7a8260) at ../Python/ceval.c:4645
#36 0x00007bf438b8840f in _PyEval_EvalFrameDefault (f=0x7bf42ea2fa40, throwflag=<optimized out>) at ../Python/ceval.c:3191
#37 0x00007bf438b7b95b in PyEval_EvalFrameEx (f=f@entry=0x7bf42ea2fa40, throwflag=throwflag@entry=0) at ../Python/ceval.c:547
#38 0x00007bf438a8cc85 in function_code_fastcall (co=<optimized out>, args=0x7bf42e7546f8, nargs=nargs@entry=1, globals=<optimized out>) at ../Objects/call.c:283
#39 0x00007bf438a8d7f5 in _PyFunction_FastCallKeywords (func=func@entry=0x7bf430275ba0, stack=stack@entry=0x7bf42e7546f0, nargs=nargs@entry=1, kwnames=kwnames@entry=0x0) at ../Objects/call.c:408
#40 0x00007bf438b7a924 in call_function (pp_stack=pp_stack@entry=0x7bf424fff530, oparg=oparg@entry=1, kwnames=kwnames@entry=0x0) at ../Python/ceval.c:4616
#41 0x00007bf438b87da9 in _PyEval_EvalFrameDefault (f=0x7bf42e754540, throwflag=<optimized out>) at ../Python/ceval.c:3110
#42 0x00007bf438b7b95b in PyEval_EvalFrameEx (f=f@entry=0x7bf42e754540, throwflag=throwflag@entry=0) at ../Python/ceval.c:547
#43 0x00007bf438a8cc85 in function_code_fastcall (co=co@entry=0x7bf430259640, args=0x7bf43404e138, args@entry=0x7bf43404e118, nargs=nargs@entry=4, globals=globals@entry=0x7bf4302cf560) at ../Objects/call.c:283
#44 0x00007bf438a8d4a4 in _PyFunction_FastCallDict (func=func@entry=0x7bf430275a20, args=args@entry=0x7bf43404e118, nargs=4, kwargs=kwargs@entry=0x7bf42e7b5f60) at ../Objects/call.c:322
#45 0x00007bf438a8ffc3 in PyObject_Call (callable=callable@entry=0x7bf430275a20, args=args@entry=0x7bf43404e0f0, kwargs=kwargs@entry=0x7bf42e7b5f60) at ../Objects/call.c:226
#46 0x00007bf438b7a035 in do_call_core (func=func@entry=0x7bf430275a20, callargs=callargs@entry=0x7bf43404e0f0, kwdict=kwdict@entry=0x7bf42e7b5f60) at ../Python/ceval.c:4645
#47 0x00007bf438b8840f in _PyEval_EvalFrameDefault (f=0x7bf42e7b8660, throwflag=<optimized out>) at ../Python/ceval.c:3191
#48 0x00007bf438b7b95b in PyEval_EvalFrameEx (f=f@entry=0x7bf42e7b8660, throwflag=throwflag@entry=0) at ../Python/ceval.c:547
#49 0x00007bf438a8cc85 in function_code_fastcall (co=<optimized out>, args=0x7bf42e7541e8, nargs=nargs@entry=1, globals=<optimized out>) at ../Objects/call.c:283
#50 0x00007bf438a8d7f5 in _PyFunction_FastCallKeywords (func=func@entry=0x7bf437df5ba0, stack=stack@entry=0x7bf42e7541e0, nargs=nargs@entry=1, kwnames=kwnames@entry=0x0) at ../Objects/call.c:408
#51 0x00007bf438b7a924 in call_function (pp_stack=pp_stack@entry=0x7bf424fffa40, oparg=oparg@entry=1, kwnames=kwnames@entry=0x0) at ../Python/ceval.c:4616
#52 0x00007bf438b87da9 in _PyEval_EvalFrameDefault (f=0x7bf42e754040, throwflag=<optimized out>) at ../Python/ceval.c:3110
#53 0x00007bf438b7b95b in PyEval_EvalFrameEx (f=f@entry=0x7bf42e754040, throwflag=throwflag@entry=0) at ../Python/ceval.c:547
#54 0x00007bf438a8cc85 in function_code_fastcall (co=<optimized out>, args=0x7bf42e7b85f0, nargs=nargs@entry=1, globals=<optimized out>) at ../Objects/call.c:283
#55 0x00007bf438a8d7f5 in _PyFunction_FastCallKeywords (func=func@entry=0x7bf437df5ea0, stack=stack@entry=0x7bf42e7b85e8, nargs=nargs@entry=1, kwnames=kwnames@entry=0x0) at ../Objects/call.c:408
#56 0x00007bf438b7a924 in call_function (pp_stack=pp_stack@entry=0x7bf424fffc90, oparg=oparg@entry=1, kwnames=kwnames@entry=0x0) at ../Python/ceval.c:4616
#57 0x00007bf438b87da9 in _PyEval_EvalFrameDefault (f=0x7bf42e7b8460, throwflag=<optimized out>) at ../Python/ceval.c:3110
#58 0x00007bf438b7b95b in PyEval_EvalFrameEx (f=f@entry=0x7bf42e7b8460, throwflag=throwflag@entry=0) at ../Python/ceval.c:547
#59 0x00007bf438a8cc85 in function_code_fastcall (co=co@entry=0x7bf43805ee80, args=0x7bf424fffeb8, args@entry=0x7bf424fffeb0, nargs=nargs@entry=1, globals=globals@entry=0x7bf438044d60) at ../Objects/call.c:283
#60 0x00007bf438a8d4a4 in _PyFunction_FastCallDict (func=func@entry=0x7bf437df5c60, args=args@entry=0x7bf424fffeb0, nargs=nargs@entry=1, kwargs=kwargs@entry=0x0) at ../Objects/call.c:322
#61 0x00007bf438a8eeec in _PyObject_FastCallDict (callable=callable@entry=0x7bf437df5c60, args=args@entry=0x7bf424fffeb0, nargs=nargs@entry=1, kwargs=kwargs@entry=0x0) at ../Objects/call.c:98
#62 0x00007bf438a8f124 in _PyObject_Call_Prepend (callable=0x7bf437df5c60, obj=obj@entry=0x7bf42e7a9300, args=0x7bf4390c1060, kwargs=0x0) at ../Objects/call.c:906
#63 0x00007bf438a90c77 in method_call (method=<optimized out>, args=<optimized out>, kwargs=<optimized out>) at ../Objects/classobject.c:309
#64 0x00007bf438a8fef8 in PyObject_Call (callable=0x7bf42f24b4e0, args=0x7bf4390c1060, kwargs=0x0) at ../Objects/call.c:245
#65 0x00007bf438c204b6 in t_bootstrap (boot_raw=boot_raw@entry=0x7bf42e79cb80) at ../Modules/_threadmodule.c:994
#66 0x00007bf438bcdf90 in pythread_wrapper (arg=<optimized out>) at ../Python/thread_pthread.h:174
#67 0x00007bf437e0c89f in pthread.create_tramp () from /usr/lib/libpthread.so.1
#68 0x00007bf437092f80 in ?? () from /usr/lib/libc.so.12
#69 0x0000000000200000 in ?? ()
#70 0x0000000000000000 in ?? ()

Another thing I thought I'd add is when import was failing I saved the output below from venv (don't remember how I built that copy though):

$ PYTHONFAULTHANDLER=1 python -c 'import libtorrent'
Fatal Python error: Aborted

Current thread 0x00007913763f5800 (most recent call first):
  File "<frozen importlib._bootstrap>", line 219 in _call_with_frames_removed
  File "<frozen importlib._bootstrap_external>", line 1043 in create_module
  File "<frozen importlib._bootstrap>", line 583 in module_from_spec
  File "<frozen importlib._bootstrap>", line 670 in _load_unlocked
  File "<frozen importlib._bootstrap>", line 967 in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 983 in _find_and_load
  File "<string>", line 1 in <module>
Abort trap (core dumped)

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@hellium6