frommultiprocessingimportshared_memory# Create shared memoryshm=shared_memory.SharedMemory(create=True,size=10)# Potential trigger: Accessing the buffer while the underlying# resource is being manipulated or in a specific state.try:shm.buf[:5]=b'hello'finally:shm.close()shm.unlink()

===================================================================3246293==ERROR: AddressSanitizer: BUS on unknown address (pc 0x7aa47a30b9d6 bp 0x7ffcc9209510 sp 0x7ffcc9208cc8 T0)==3246293==The signal is caused by a WRITE memory access.==3246293==Hint: this fault was caused by a dereference of a high value address (see register values below).  Disassemble the provided pc to learn which register was used.    #0 0x7aa47a30b9d6  string/../sysdeps/x86_64/multiarch/memmove-vec-unaligned-erms.S:385    #1 0x620f374b53ab in __asan_memcpy (/home/fuzz/WorkSpace/FusionFuzzLoop/projects/cpython/cpython/build/python+0x29f3ab) (BuildId: f791960dfefd969819f59576836bc8a336f89709)    #2 0x620f376e8215 in copy_base /home/fuzz/WorkSpace/FusionFuzzLoop/projects/cpython/cpython/build/../Objects/memoryobject.c:353:13    #3 0x620f376e8215 in copy_single /home/fuzz/WorkSpace/FusionFuzzLoop/projects/cpython/cpython/build/../Objects/memoryobject.c:423:5    #4 0x620f376e5843 in memory_ass_sub /home/fuzz/WorkSpace/FusionFuzzLoop/projects/cpython/cpython/build/../Objects/memoryobject.c:2720:15    #5 0x620f3797a3ac in _PyEval_EvalFrameDefault /home/fuzz/WorkSpace/FusionFuzzLoop/projects/cpython/cpython/build/../Python/generated_cases.c.h:11363:27    #6 0x620f37962afd in _PyEval_EvalFrame /home/fuzz/WorkSpace/FusionFuzzLoop/projects/cpython/cpython/build/../Include/internal/pycore_ceval.h:118:16    #7 0x620f37962afd in _PyEval_Vector /home/fuzz/WorkSpace/FusionFuzzLoop/projects/cpython/cpython/build/../Python/ceval.c:2094:12    #8 0x620f37962afd in PyEval_EvalCode /home/fuzz/WorkSpace/FusionFuzzLoop/projects/cpython/cpython/build/../Python/ceval.c:673:21    #9 0x620f37b94efc in run_eval_code_obj /home/fuzz/WorkSpace/FusionFuzzLoop/projects/cpython/cpython/build/../Python/pythonrun.c:1366:12    #10 0x620f37b94efc in run_mod /home/fuzz/WorkSpace/FusionFuzzLoop/projects/cpython/cpython/build/../Python/pythonrun.c:1469:19    #11 0x620f37b8ec17 in pyrun_file /home/fuzz/WorkSpace/FusionFuzzLoop/projects/cpython/cpython/build/../Python/pythonrun.c:1294:15    #12 0x620f37b8ec17 in _PyRun_SimpleFileObject /home/fuzz/WorkSpace/FusionFuzzLoop/projects/cpython/cpython/build/../Python/pythonrun.c:518:13    #13 0x620f37b8e035 in _PyRun_AnyFileObject /home/fuzz/WorkSpace/FusionFuzzLoop/projects/cpython/cpython/build/../Python/pythonrun.c:81:15    #14 0x620f37bfc18d in pymain_run_file_obj /home/fuzz/WorkSpace/FusionFuzzLoop/projects/cpython/cpython/build/../Modules/main.c:410:15    #15 0x620f37bfc18d in pymain_run_file /home/fuzz/WorkSpace/FusionFuzzLoop/projects/cpython/cpython/build/../Modules/main.c:429:15    #16 0x620f37bfaa71 in pymain_run_python /home/fuzz/WorkSpace/FusionFuzzLoop/projects/cpython/cpython/build/../Modules/main.c:691:21    #17 0x620f37bfaa71 in Py_RunMain /home/fuzz/WorkSpace/FusionFuzzLoop/projects/cpython/cpython/build/../Modules/main.c:772:5    #18 0x620f37bfb583 in pymain_main /home/fuzz/WorkSpace/FusionFuzzLoop/projects/cpython/cpython/build/../Modules/main.c:802:12    #19 0x620f37bfb6e2 in Py_BytesMain /home/fuzz/WorkSpace/FusionFuzzLoop/projects/cpython/cpython/build/../Modules/main.c:826:12    #20 0x7aa47a270d8f in __libc_start_call_main csu/../sysdeps/nptl/libc_start_call_main.h:58:16    #21 0x7aa47a270e3f in __libc_start_main csu/../csu/libc-start.c:392:3    #22 0x620f37412e94 in _start (/home/fuzz/WorkSpace/FusionFuzzLoop/projects/cpython/cpython/build/python+0x1fce94) (BuildId: f791960dfefd969819f59576836bc8a336f89709)==3246293==Register values:rax = 0x00007aa47a58b000  rbx = 0x0000000000000000  rcx = 0x000000006f6c6c65  rdx = 0x0000000000000005  rdi = 0x00007aa47a58b000  rsi = 0x000000006c6c6568  rbp = 0x00007ffcc9209510  rsp = 0x00007ffcc9208cc8   r8 = 0x00000f548f4b1600   r9 = 0x00007aa47a58b004  r10 = 0x00000f548f4b1600  r11 = 0x00000f550f4a9600  r12 = 0x00000f550f4a9600  r13 = 0xffffffffffffffc4  r14 = 0x000076a4780a5220  r15 = 0x000076e479270db0  AddressSanitizer can not provide additional info.SUMMARY: AddressSanitizer: BUS string/../sysdeps/x86_64/multiarch/memmove-vec-unaligned-erms.S:385 ==3246293==ABORTING