Comments (4)
gaogaotiantian
commented on September 26, 2024
1
Ah, I gave up. I can't even build Python with MSAN. Have similar issues as openssl/openssl#17784 and from #79395 (comment) it seems like the MSAN support is not that good for CPython. My guess is errno is somehow not set in strtol, but as I can't repro the issue, I can't move forward on this.
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gaogaotiantian
commented on September 26, 2024
Which version of clang are you using?
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wrongnull
commented on September 26, 2024
Which version of clang are you using?
This is reproduced in versions 16, 17 and 18 of clang
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wrongnull
commented on September 26, 2024
Ah, I gave up. I can't even build Python with MSAN. Have similar issues as openssl/openssl#17784 and from #79395 (comment) it seems like the MSAN support is not that good for CPython. My guess is
errnois somehow not set instrtol, but as I can't repro the issue, I can't move forward on this.
TBH I have some issues with MSAN build of interpreter as well. I got the following stacktrace at the last step of building:
./python -E -S -m sysconfig --generate-posix-vars ;\
if test $? -ne 0 ; then \
echo "generate-posix-vars failed" ; \
rm -f ./pybuilddir.txt ; \
exit 1 ; \
fi
./python -E -c 'import sys ; from sysconfig import get_platform ; print("%s-%d.%d" % (get_platform(), *sys.version_info[:2]))' >platform
Uninitialized bytes in __interceptor_fopen64 at offset 0 inside [0x70200000b400, 25)
==50784==WARNING: MemorySanitizer: use-of-uninitialized-value
#0 0x7fcd53df6716 in BIO_new_file (/lib/x86_64-linux-gnu/libcrypto.so.3+0xe4716) (BuildId: b6484831f6d9d00d02367f3b7756115c57b53d2a)
#1 0x7fcd53e2ee0c (/lib/x86_64-linux-gnu/libcrypto.so.3+0x11ce0c) (BuildId: b6484831f6d9d00d02367f3b7756115c57b53d2a)
#2 0x7fcd53e302b1 in CONF_modules_load_file_ex (/lib/x86_64-linux-gnu/libcrypto.so.3+0x11e2b1) (BuildId: b6484831f6d9d00d02367f3b7756115c57b53d2a)
#3 0x7fcd53ed38ff (/lib/x86_64-linux-gnu/libcrypto.so.3+0x1c18ff) (BuildId: b6484831f6d9d00d02367f3b7756115c57b53d2a)
#4 0x7fcd56245cbe in __pthread_once_slow nptl/pthread_once.c:116:7
#5 0x7fcd53ee1d9c in CRYPTO_THREAD_run_once (/lib/x86_64-linux-gnu/libcrypto.so.3+0x1cfd9c) (BuildId: b6484831f6d9d00d02367f3b7756115c57b53d2a)
#6 0x7fcd53ed44f0 in OPENSSL_init_crypto (/lib/x86_64-linux-gnu/libcrypto.so.3+0x1c24f0) (BuildId: b6484831f6d9d00d02367f3b7756115c57b53d2a)
#7 0x7fcd53ee8f8b in OBJ_obj2nid (/lib/x86_64-linux-gnu/libcrypto.so.3+0x1d6f8b) (BuildId: b6484831f6d9d00d02367f3b7756115c57b53d2a)
#8 0x7fcd53dd1c76 (/lib/x86_64-linux-gnu/libcrypto.so.3+0xbfc76) (BuildId: b6484831f6d9d00d02367f3b7756115c57b53d2a)
#9 0x7fcd53dd1f03 in d2i_ASN1_OBJECT (/lib/x86_64-linux-gnu/libcrypto.so.3+0xbff03) (BuildId: b6484831f6d9d00d02367f3b7756115c57b53d2a)
#10 0x7fcd53ee92e0 in OBJ_txt2obj (/lib/x86_64-linux-gnu/libcrypto.so.3+0x1d72e0) (BuildId: b6484831f6d9d00d02367f3b7756115c57b53d2a)
#11 0x7fcd542cdb4f in _ssl_txt2obj_impl /home/wrongnull/projects/cpython/./Modules/_ssl.c:5608:11
#12 0x7fcd542cdb4f in _ssl_txt2obj /home/wrongnull/projects/cpython/./Modules/clinic/_ssl.c.h:1473:20
#13 0x563c4b2c12c4 in cfunction_vectorcall_FASTCALL_KEYWORDS /home/wrongnull/projects/cpython/Objects/methodobject.c:441:24
#14 0x563c4b1df16b in _PyObject_VectorcallTstate /home/wrongnull/projects/cpython/./Include/internal/pycore_call.h:168:11
#15 0x563c4b504997 in _PyEval_EvalFrameDefault /home/wrongnull/projects/cpython/Python/generated_cases.c.h:1397:19
#16 0x563c4b1e947b in _PyObject_VectorcallTstate /home/wrongnull/projects/cpython/./Include/internal/pycore_call.h:168:11
#17 0x563c4b1e7471 in method_vectorcall /home/wrongnull/projects/cpython/Objects/classobject.c:92:18
#18 0x563c4b1df16b in _PyObject_VectorcallTstate /home/wrongnull/projects/cpython/./Include/internal/pycore_call.h:168:11
#19 0x563c4b1e470a in object_vacall /home/wrongnull/projects/cpython/Objects/call.c:819:14
#20 0x563c4b1e4c96 in PyObject_CallFunctionObjArgs /home/wrongnull/projects/cpython/Objects/call.c:926:14
#21 0x563c4b354ac9 in type_new_set_names /home/wrongnull/projects/cpython/Objects/typeobject.c:10328:25
#22 0x563c4b354ac9 in type_new_impl /home/wrongnull/projects/cpython/Objects/typeobject.c:3982:9
#23 0x563c4b354ac9 in type_new /home/wrongnull/projects/cpython/Objects/typeobject.c:4107:12
#24 0x563c4b373faf in tp_new_wrapper /home/wrongnull/projects/cpython/Objects/typeobject.c:8647:11
#25 0x563c4b2c2fbf in cfunction_call /home/wrongnull/projects/cpython/Objects/methodobject.c:540:18
#26 0x563c4b1e1438 in _PyObject_Call /home/wrongnull/projects/cpython/Objects/call.c:361:18
#27 0x563c4b4d355b in _PyEval_EvalFrameDefault /home/wrongnull/projects/cpython/Python/generated_cases.c.h:1252:26
#28 0x563c4b1df547 in _PyObject_VectorcallDictTstate /home/wrongnull/projects/cpython/Objects/call.c:135:15
#29 0x563c4b1e1d9c in _PyObject_Call_Prepend /home/wrongnull/projects/cpython/Objects/call.c:504:24
#30 0x563c4b36965a in slot_tp_new /home/wrongnull/projects/cpython/Objects/typeobject.c:9385:14
#31 0x563c4b34fc2d in type_call /home/wrongnull/projects/cpython/Objects/typeobject.c:1777:11
#32 0x563c4b1dfa36 in _PyObject_MakeTpCall /home/wrongnull/projects/cpython/Objects/call.c:242:18
#33 0x563c4b4af906 in builtin___build_class__ /home/wrongnull/projects/cpython/Python/bltinmodule.c:210:15
#34 0x563c4b2c12c4 in cfunction_vectorcall_FASTCALL_KEYWORDS /home/wrongnull/projects/cpython/Objects/methodobject.c:441:24
#35 0x563c4b1df16b in _PyObject_VectorcallTstate /home/wrongnull/projects/cpython/./Include/internal/pycore_call.h:168:11
#36 0x563c4b4f82b2 in _PyEval_EvalFrameDefault /home/wrongnull/projects/cpython/Python/generated_cases.c.h:817:23
#37 0x563c4b4bb9ab in _PyEval_EvalFrame /home/wrongnull/projects/cpython/./Include/internal/pycore_ceval.h:114:16
#38 0x563c4b4bb9ab in _PyEval_Vector /home/wrongnull/projects/cpython/Python/ceval.c:1820:12
#39 0x563c4b4bb9ab in PyEval_EvalCode /home/wrongnull/projects/cpython/Python/ceval.c:599:21
#40 0x563c4b4b2d68 in builtin_exec_impl /home/wrongnull/projects/cpython/Python/bltinmodule.c:1132:17
#41 0x563c4b4b2d68 in builtin_exec /home/wrongnull/projects/cpython/Python/clinic/bltinmodule.c.h:521:20
#42 0x563c4b2c12c4 in cfunction_vectorcall_FASTCALL_KEYWORDS /home/wrongnull/projects/cpython/Objects/methodobject.c:441:24
#43 0x563c4b4d355b in _PyEval_EvalFrameDefault /home/wrongnull/projects/cpython/Python/generated_cases.c.h:1252:26
#44 0x563c4b1df16b in _PyObject_VectorcallTstate /home/wrongnull/projects/cpython/./Include/internal/pycore_call.h:168:11
#45 0x563c4b1e470a in object_vacall /home/wrongnull/projects/cpython/Objects/call.c:819:14
#46 0x563c4b1e4234 in PyObject_CallMethodObjArgs /home/wrongnull/projects/cpython/Objects/call.c:880:24
#47 0x563c4b5cfd4a in import_find_and_load /home/wrongnull/projects/cpython/Python/import.c:2758:11
#48 0x563c4b5cfd4a in PyImport_ImportModuleLevelObject /home/wrongnull/projects/cpython/Python/import.c:2838:15
#49 0x563c4b4cee5b in import_name /home/wrongnull/projects/cpython/Python/ceval.c:2631:16
#50 0x563c4b4cee5b in _PyEval_EvalFrameDefault /home/wrongnull/projects/cpython/Python/generated_cases.c.h:2957:19
#51 0x563c4b4bb9ab in _PyEval_EvalFrame /home/wrongnull/projects/cpython/./Include/internal/pycore_ceval.h:114:16
#52 0x563c4b4bb9ab in _PyEval_Vector /home/wrongnull/projects/cpython/Python/ceval.c:1820:12
#53 0x563c4b4bb9ab in PyEval_EvalCode /home/wrongnull/projects/cpython/Python/ceval.c:599:21
#54 0x563c4b4b2d68 in builtin_exec_impl /home/wrongnull/projects/cpython/Python/bltinmodule.c:1132:17
#55 0x563c4b4b2d68 in builtin_exec /home/wrongnull/projects/cpython/Python/clinic/bltinmodule.c.h:521:20
#56 0x563c4b2c12c4 in cfunction_vectorcall_FASTCALL_KEYWORDS /home/wrongnull/projects/cpython/Objects/methodobject.c:441:24
#57 0x563c4b4d355b in _PyEval_EvalFrameDefault /home/wrongnull/projects/cpython/Python/generated_cases.c.h:1252:26
#58 0x563c4b1df16b in _PyObject_VectorcallTstate /home/wrongnull/projects/cpython/./Include/internal/pycore_call.h:168:11
#59 0x563c4b1e470a in object_vacall /home/wrongnull/projects/cpython/Objects/call.c:819:14
#60 0x563c4b1e4234 in PyObject_CallMethodObjArgs /home/wrongnull/projects/cpython/Objects/call.c:880:24
#61 0x563c4b5cfd4a in import_find_and_load /home/wrongnull/projects/cpython/Python/import.c:2758:11
#62 0x563c4b5cfd4a in PyImport_ImportModuleLevelObject /home/wrongnull/projects/cpython/Python/import.c:2838:15
#63 0x563c4b4cee5b in import_name /home/wrongnull/projects/cpython/Python/ceval.c:2631:16
#64 0x563c4b4cee5b in _PyEval_EvalFrameDefault /home/wrongnull/projects/cpython/Python/generated_cases.c.h:2957:19
#65 0x563c4b4bb9ab in _PyEval_EvalFrame /home/wrongnull/projects/cpython/./Include/internal/pycore_ceval.h:114:16
#66 0x563c4b4bb9ab in _PyEval_Vector /home/wrongnull/projects/cpython/Python/ceval.c:1820:12
#67 0x563c4b4bb9ab in PyEval_EvalCode /home/wrongnull/projects/cpython/Python/ceval.c:599:21
#68 0x563c4b4b2d68 in builtin_exec_impl /home/wrongnull/projects/cpython/Python/bltinmodule.c:1132:17
#69 0x563c4b4b2d68 in builtin_exec /home/wrongnull/projects/cpython/Python/clinic/bltinmodule.c.h:521:20
#70 0x563c4b2c12c4 in cfunction_vectorcall_FASTCALL_KEYWORDS /home/wrongnull/projects/cpython/Objects/methodobject.c:441:24
#71 0x563c4b4d355b in _PyEval_EvalFrameDefault /home/wrongnull/projects/cpython/Python/generated_cases.c.h:1252:26
#72 0x563c4b1df16b in _PyObject_VectorcallTstate /home/wrongnull/projects/cpython/./Include/internal/pycore_call.h:168:11
#73 0x563c4b1e470a in object_vacall /home/wrongnull/projects/cpython/Objects/call.c:819:14
#74 0x563c4b1e4234 in PyObject_CallMethodObjArgs /home/wrongnull/projects/cpython/Objects/call.c:880:24
#75 0x563c4b5cfd4a in import_find_and_load /home/wrongnull/projects/cpython/Python/import.c:2758:11
#76 0x563c4b5cfd4a in PyImport_ImportModuleLevelObject /home/wrongnull/projects/cpython/Python/import.c:2838:15
#77 0x563c4b4b053a in builtin___import___impl /home/wrongnull/projects/cpython/Python/bltinmodule.c:277:12
#78 0x563c4b4b053a in builtin___import__ /home/wrongnull/projects/cpython/Python/clinic/bltinmodule.c.h:107:20
#79 0x563c4b2c12c4 in cfunction_vectorcall_FASTCALL_KEYWORDS /home/wrongnull/projects/cpython/Objects/methodobject.c:441:24
#80 0x563c4b1e21f7 in _PyObject_VectorcallTstate /home/wrongnull/projects/cpython/./Include/internal/pycore_call.h:168:11
#81 0x563c4b1e21f7 in _PyObject_CallFunctionVa /home/wrongnull/projects/cpython/Objects/call.c:552:18
#82 0x563c4b1e1fd8 in PyObject_CallFunction /home/wrongnull/projects/cpython/Objects/call.c:574:14
#83 0x563c4b5cedbd in PyImport_Import /home/wrongnull/projects/cpython/Python/import.c:3023:9
#84 0x563c4b5ceade in PyImport_ImportModule /home/wrongnull/projects/cpython/Python/import.c:2466:14
#85 0x7fcd54ba247a in module_init /home/wrongnull/projects/cpython/./Modules/_asynciomodule.c:3631:26
#86 0x7fcd54ba247a in module_exec /home/wrongnull/projects/cpython/./Modules/_asynciomodule.c:3758:9
#87 0x563c4b2c6266 in PyModule_ExecDef /home/wrongnull/projects/cpython/Objects/moduleobject.c:442:23
#88 0x563c4b5d642b in exec_builtin_or_dynamic /home/wrongnull/projects/cpython/Python/import.c:784:12
#89 0x563c4b5d642b in _imp_exec_dynamic_impl /home/wrongnull/projects/cpython/Python/import.c:3774:12
#90 0x563c4b5d642b in _imp_exec_dynamic /home/wrongnull/projects/cpython/Python/clinic/import.c.h:513:21
#91 0x563c4b2c1991 in cfunction_vectorcall_O /home/wrongnull/projects/cpython/Objects/methodobject.c:512:24
#92 0x563c4b4d355b in _PyEval_EvalFrameDefault /home/wrongnull/projects/cpython/Python/generated_cases.c.h:1252:26
#93 0x563c4b4bb9ab in _PyEval_EvalFrame /home/wrongnull/projects/cpython/./Include/internal/pycore_ceval.h:114:16
#94 0x563c4b4bb9ab in _PyEval_Vector /home/wrongnull/projects/cpython/Python/ceval.c:1820:12
#95 0x563c4b4bb9ab in PyEval_EvalCode /home/wrongnull/projects/cpython/Python/ceval.c:599:21
#96 0x563c4b665a91 in run_eval_code_obj /home/wrongnull/projects/cpython/Python/pythonrun.c:1291:9
#97 0x563c4b664d96 in run_mod /home/wrongnull/projects/cpython/Python/pythonrun.c:1376:19
#98 0x563c4b65f4f3 in pyrun_file /home/wrongnull/projects/cpython/Python/pythonrun.c:1212:15
#99 0x563c4b65f4f3 in _PyRun_SimpleFileObject /home/wrongnull/projects/cpython/Python/pythonrun.c:461:13
#100 0x563c4b65ec5e in _PyRun_AnyFileObject /home/wrongnull/projects/cpython/Python/pythonrun.c:77:15
#101 0x563c4b6b7e23 in pymain_run_file_obj /home/wrongnull/projects/cpython/Modules/main.c:357:15
#102 0x563c4b6b7e23 in pymain_run_file /home/wrongnull/projects/cpython/Modules/main.c:376:15
#103 0x563c4b6b7e23 in pymain_run_python /home/wrongnull/projects/cpython/Modules/main.c:628:21
#104 0x563c4b6b7e23 in Py_RunMain /home/wrongnull/projects/cpython/Modules/main.c:707:5
#105 0x563c4b6b89e0 in pymain_main /home/wrongnull/projects/cpython/Modules/main.c:737:12
#106 0x563c4b6b8aca in Py_BytesMain /home/wrongnull/projects/cpython/Modules/main.c:761:12
#107 0x7fcd561d10cf in __libc_start_call_main csu/../sysdeps/nptl/libc_start_call_main.h:58:16
#108 0x7fcd561d1188 in __libc_start_main csu/../csu/libc-start.c:360:3
#109 0x563c4afeaf44 in _start (/home/wrongnull/projects/cpython/python+0x9df44) (BuildId: 808378f45460e7a3a98609cd122b229585b0f0f7)
SUMMARY: MemorySanitizer: use-of-uninitialized-value (/lib/x86_64-linux-gnu/libcrypto.so.3+0xe4716) (BuildId: b6484831f6d9d00d02367f3b7756115c57b53d2a) in BIO_new_file
Exiting
make: *** [Makefile:1471: checksharedmods] Error 1
However python executable itself has been compiled fine
wrongnull@DESKTOP-22AKPRT:~/projects/cpython$ ./python
Python 3.13.0a4+ (heads/main:7cee276d55, Mar 10 2024, 01:59:47) [Clang 16.0.6 (15)] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>>
from cpython.
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from cpython.