New submission from Simon Aldrich <si...@aldrich.cc>:
Running a Valgrind memcheck of Py_Initialize still produces issues even when using the suggested suppressions file. Am I doing something wrong or is this expected? I've attached a simple reproducer which can be run as follows: 1. Extract tarball 2. cmake 3. make memcheck (runs valgrind with suppressions) Gives output similar to: [100%] Built target valgrind-libpython ==2901== Memcheck, a memory error detector ==2901== Copyright (C) 2002-2017, and GNU GPL'd, by Julian Seward et al. ==2901== Using Valgrind-3.13.0 and LibVEX; rerun with -h for copyright info ==2901== Command: ./valgrind-libpython ==2901== ==2901== Conditional jump or move depends on uninitialised value(s) ==2901== at 0x5729DB7: __wcsnlen_avx2 (strlen-avx2.S:264) ==2901== by 0x5657CA1: wcsrtombs (wcsrtombs.c:104) ==2901== by 0x55DDC40: wcstombs (wcstombs.c:34) ==2901== by 0x4FB7EB9: _Py_EncodeLocaleRaw (in /usr/lib/x86_64-linux-gnu/libpython3.8.so.1.0) ==2901== by 0x4FB99F7: ??? (in /usr/lib/x86_64-linux-gnu/libpython3.8.so.1.0) ==2901== by 0x4FBB8B2: _PyPathConfig_Calculate (in /usr/lib/x86_64-linux-gnu/libpython3.8.so.1.0) ==2901== by 0x4FDAC8D: _PyConfig_InitPathConfig (in /usr/lib/x86_64-linux-gnu/libpython3.8.so.1.0) ==2901== by 0x4FE4F6E: PyConfig_Read (in /usr/lib/x86_64-linux-gnu/libpython3.8.so.1.0) ==2901== by 0x4FE687A: ??? (in /usr/lib/x86_64-linux-gnu/libpython3.8.so.1.0) ==2901== by 0x4FE79A1: Py_InitializeFromConfig (in /usr/lib/x86_64-linux-gnu/libpython3.8.so.1.0) ==2901== by 0x4FE7A5B: Py_InitializeEx (in /usr/lib/x86_64-linux-gnu/libpython3.8.so.1.0) ==2901== by 0x108758: main (in /home/simon/temp/valgrind-libpython/build/valgrind-libpython) ==2901== ==2901== Conditional jump or move depends on uninitialised value(s) ==2901== at 0x55C14E8: internal_utf8_loop (loop.c:298) ==2901== by 0x55C14E8: __gconv_transform_internal_utf8 (skeleton.c:609) ==2901== by 0x5657CD4: wcsrtombs (wcsrtombs.c:110) ==2901== by 0x55DDC40: wcstombs (wcstombs.c:34) ==2901== by 0x4FB7EB9: _Py_EncodeLocaleRaw (in /usr/lib/x86_64-linux-gnu/libpython3.8.so.1.0) ==2901== by 0x4FB99F7: ??? (in /usr/lib/x86_64-linux-gnu/libpython3.8.so.1.0) ==2901== by 0x4FBB8B2: _PyPathConfig_Calculate (in /usr/lib/x86_64-linux-gnu/libpython3.8.so.1.0) ==2901== by 0x4FDAC8D: _PyConfig_InitPathConfig (in /usr/lib/x86_64-linux-gnu/libpython3.8.so.1.0) ==2901== by 0x4FE4F6E: PyConfig_Read (in /usr/lib/x86_64-linux-gnu/libpython3.8.so.1.0) ==2901== by 0x4FE687A: ??? (in /usr/lib/x86_64-linux-gnu/libpython3.8.so.1.0) ==2901== by 0x4FE79A1: Py_InitializeFromConfig (in /usr/lib/x86_64-linux-gnu/libpython3.8.so.1.0) ==2901== by 0x4FE7A5B: Py_InitializeEx (in /usr/lib/x86_64-linux-gnu/libpython3.8.so.1.0) ==2901== by 0x108758: main (in /home/simon/temp/valgrind-libpython/build/valgrind-libpython)... ---------- components: C API, Library (Lib) files: valgrind-libpython.tar.gz messages: 392199 nosy: simonaldrich priority: normal severity: normal status: open title: Valgrind memcheck on Py_Initialize type: security versions: Python 3.8 Added file: https://bugs.python.org/file49996/valgrind-libpython.tar.gz _______________________________________ Python tracker <rep...@bugs.python.org> <https://bugs.python.org/issue43967> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
