Objects/object.c:767:24: runtime error: member access within null pointer of type 'PyObject' (aka 'struct _object') UndefinedBehaviorSanitizer:DEADLYSIGNAL ==4130==ERROR: UndefinedBehaviorSanitizer: SEGV on unknown address 0x000000000008 (pc 0x000000504660 bp 0xc2b2ae3d27d4eb4f sp 0x7ffdfef16c70 T4130) ==4130==The signal is caused by a READ memory access. ==4130==Hint: address points to the zero page. #0 0x50465f in PyObject_Hash /run/media/fuzz/target/Python/Python-3.9.9/Objects/object.c:767:24 #1 0x530393 in tuplehash /run/media/fuzz/target/Python/Python-3.9.9/Objects/tupleobject.c:367:27 #2 0x4c76b5 in PyDict_SetItem /run/media/fuzz/target/Python/Python-3.9.9/Objects/dictobject.c:1564:16 #3 0x6ea1ae in r_object /run/media/fuzz/target/Python/Python-3.9.9/Python/marshal.c:1230:17 #4 0x6ea180 in r_object /run/media/fuzz/target/Python/Python-3.9.9/Python/marshal.c:1222:19 #5 0x6ea180 in r_object /run/media/fuzz/target/Python/Python-3.9.9/Python/marshal.c:1222:19 #6 0x6e9fdb in r_object /run/media/fuzz/target/Python/Python-3.9.9/Python/marshal.c:1174:18 #7 0x6e3d1d in read_object /run/media/fuzz/target/Python/Python-3.9.9/Python/marshal.c:1445:9 #8 0x6e3a74 in PyMarshal_ReadObjectFromString /run/media/fuzz/target/Python/Python-3.9.9/Python/marshal.c:1562:14 #9 0x6e39f5 in PyMarshal_ReadLastObjectFromFile /run/media/fuzz/target/Python/Python-3.9.9/Python/marshal.c:1514:27 #10 0x70b260 in run_pyc_file /run/media/fuzz/target/Python/Python-3.9.9/Python/pythonrun.c:1271:9 #11 0x70b260 in pyrun_simple_file /run/media/fuzz/target/Python/Python-3.9.9/Python/pythonrun.c:441 #12 0x70b260 in PyRun_SimpleFileExFlags /run/media/fuzz/target/Python/Python-3.9.9/Python/pythonrun.c:483 #13 0x4486ad in pymain_run_file /run/media/fuzz/target/Python/Python-3.9.9/Modules/main.c:373:15 #14 0x4486ad in pymain_run_python /run/media/fuzz/target/Python/Python-3.9.9/Modules/main.c:598 #15 0x4486ad in Py_RunMain /run/media/fuzz/target/Python/Python-3.9.9/Modules/main.c:677 #16 0x44903d in pymain_main /run/media/fuzz/target/Python/Python-3.9.9/Modules/main.c:707:12 #17 0x44914b in Py_BytesMain /run/media/fuzz/target/Python/Python-3.9.9/Modules/main.c:731:12 #18 0x7e1aa22a12e0 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x202e0) #19 0x422dd9 in _start (/run/media/fuzz/target/Python/Python-3.9.9/python+0x422dd9) UndefinedBehaviorSanitizer can not provide additional info. ==5168==ABORTING