Fatal Python Error on debugpy.adapter shutdown
amadanmath opened this issue · 3 comments
amadanmath commented
Environment data
- debugpy version: 1.8.1
- OS and version: OSX Ventura 13.6.7
- Python version: 3.10.14, 3.11.9, 3.12.2 (Homebrew)
- Using VS Code or Visual Studio: No
Problem description
I was trying to set up nvim-dap-python on NeoVim. It works until I execute the last instruction; when the debugger is expected to shut down, a Problem Report for Python window pops up. Investigating further, I could reproduce the error purely in command-line, without NeoVim:
Starting the adapter with
$ python -m debugpy.adapter
and letting it output the first three events (two telemetry outputs, one debugpySockets); then stopping it with Ctrl-C.
Actual behavior
After outputting two more events, a Fatal Python Error is raised.
Content-Length: 137
{"seq": 1, "type": "event", "event": "output", "body": {"category": "telemetry", "output": "ptvsd", "data": {"packageVersion": "1.8.1"}}}Content-Length: 139
{"seq": 2, "type": "event", "event": "output", "body": {"category": "telemetry", "output": "debugpy", "data": {"packageVersion": "1.8.1"}}}Content-Length: 134
{"seq": 3, "type": "event", "event": "debugpySockets", "body": {"sockets": [{"host": "127.0.0.1", "port": 56546, "internal": false}]}}^CContent-Length: 79
{"seq": 4, "type": "event", "event": "debugpySockets", "body": {"sockets": []}}Content-Length: 79
{"seq": 5, "type": "event", "event": "debugpySockets", "body": {"sockets": []}}Fatal Python error: _enter_buffered_busy: could not acquire lock for <_io.BufferedReader name='<stdin>'> at interpreter shutdown, possibly due to daemon threads
Python runtime state: finalizing (tstate=0x00007f7960f05070)
Current thread 0x00007ff85fe507c0 (most recent call first):
<no Python frame>
Abort trap: 6
Additionally, Problem Report for Python window is shown, with the following information:
-------------------------------------
Translated Report (Full Report Below)
-------------------------------------
Process: Python [46526]
Path: /usr/local/Cellar/python@3.10/3.10.14/Frameworks/Python.framework/Versions/3.10/Resources/Python.app/Contents/MacOS/Python
Identifier: org.python.python
Version: 3.10.14 (3.10.14)
Code Type: X86-64 (Native)
Parent Process: bash [45361]
Responsible: kitty [1666]
User ID: 501
Date/Time: 2024-06-20 17:13:04.8525 +0900
OS Version: macOS 13.6.7 (22G720)
Report Version: 12
Bridge OS Version: 8.5 (21P5077)
Anonymous UUID: F0A08029-0D16-756F-668F-C79E48053E28
Sleep/Wake UUID: B19F6CAE-971F-49D7-99FF-29949992B0B2
Time Awake Since Boot: 430000 seconds
Time Since Wake: 29734 seconds
System Integrity Protection: enabled
Crashed Thread: 0 Dispatch queue: com.apple.main-thread
Exception Type: EXC_CRASH (SIGABRT)
Exception Codes: 0x0000000000000000, 0x0000000000000000
Termination Reason: Namespace SIGNAL, Code 6 Abort trap: 6
Terminating Process: Python [46526]
Application Specific Information:
abort() called
Thread 0 Crashed:: Dispatch queue: com.apple.main-thread
0 libsystem_kernel.dylib 0x7ff81c73c196 __pthread_kill + 10
1 libsystem_pthread.dylib 0x7ff81c773ee6 pthread_kill + 263
2 libsystem_c.dylib 0x7ff81c69ab45 abort + 123
3 Python 0x104496174 fatal_error_exit + 13
4 Python 0x104495fe2 fatal_error + 30
5 Python 0x104498530 _Py_FatalErrorFormat + 300
6 Python 0x1044fdab9 _enter_buffered_busy + 231
7 Python 0x1044fbb00 buffered_close + 52
8 Python 0x10438cc47 method_vectorcall_NOARGS + 87
9 Python 0x1043832ce PyObject_VectorcallMethod + 135
10 Python 0x1045038ac _io_TextIOWrapper_close + 299
11 Python 0x10438cc47 method_vectorcall_NOARGS + 87
12 Python 0x1043832ce PyObject_VectorcallMethod + 135
13 Python 0x1044f671b iobase_finalize + 236
14 Python 0x1043c90a5 PyObject_CallFinalizerFromDealloc + 60
15 Python 0x104500cdb textiowrapper_dealloc + 18
16 Python 0x1043b39e4 insertdict + 1038
17 Python 0x1043c7b02 _PyModule_ClearDict + 601
18 Python 0x104497350 finalize_modules + 1280
19 Python 0x104496b2d Py_FinalizeEx + 581
20 Python 0x1044b4a69 Py_RunMain + 498
21 Python 0x1044b5b94 Py_BytesMain + 42
22 dyld 0x7ff81c41941f start + 1903
Thread 1:
0 libsystem_kernel.dylib 0x7ff81c735f7e read + 10
1 Python 0x1044b32c6 _Py_read + 114
2 Python 0x1044f8696 _io_FileIO_readinto + 159
3 Python 0x10438cb8e method_vectorcall_O + 89
4 Python 0x1043832ce PyObject_VectorcallMethod + 135
5 Python 0x1044fe5a4 _bufferedreader_raw_read + 181
6 Python 0x1044fe4d7 _bufferedreader_fill_buffer + 51
7 Python 0x1044fe206 _buffered_readline + 347
8 Python 0x10438ce80 method_vectorcall_FASTCALL + 93
9 Python 0x104457e9a call_function + 173
10 Python 0x104453ab9 _PyEval_EvalFrameDefault + 32837
11 Python 0x10444ac06 _PyEval_Vector + 361
12 Python 0x104384a2d method_vectorcall + 354
13 Python 0x1044de63f partial_vectorcall + 378
14 Python 0x104457e9a call_function + 173
15 Python 0x104453b92 _PyEval_EvalFrameDefault + 33054
16 Python 0x10444ac06 _PyEval_Vector + 361
17 Python 0x104457e9a call_function + 173
18 Python 0x104453ab9 _PyEval_EvalFrameDefault + 32837
19 Python 0x10444ac06 _PyEval_Vector + 361
20 Python 0x104457e9a call_function + 173
21 Python 0x104453ab9 _PyEval_EvalFrameDefault + 32837
22 Python 0x10444ac06 _PyEval_Vector + 361
23 Python 0x104384aa2 method_vectorcall + 471
24 Python 0x104453d81 _PyEval_EvalFrameDefault + 33549
25 Python 0x10444ac06 _PyEval_Vector + 361
26 Python 0x104457e9a call_function + 173
27 Python 0x104453ab9 _PyEval_EvalFrameDefault + 32837
28 Python 0x10444ac06 _PyEval_Vector + 361
29 Python 0x104457e9a call_function + 173
30 Python 0x104453ab9 _PyEval_EvalFrameDefault + 32837
31 Python 0x10444ac06 _PyEval_Vector + 361
32 Python 0x104384aa2 method_vectorcall + 471
33 Python 0x1044f36d3 thread_run + 115
34 Python 0x1044a81f3 pythread_wrapper + 36
35 libsystem_pthread.dylib 0x7ff81c7741d3 _pthread_start + 125
36 libsystem_pthread.dylib 0x7ff81c76fbd3 thread_start + 15
Thread 0 crashed with X86 Thread State (64-bit):
rax: 0x0000000000000000 rbx: 0x00007ff85fe507c0 rcx: 0x00007ff7bbf25ff8 rdx: 0x0000000000000000
rdi: 0x0000000000000103 rsi: 0x0000000000000006 rbp: 0x00007ff7bbf26020 rsp: 0x00007ff7bbf25ff8
r8: 0x00000000005f1680 r9: 0xffffffff00000000 r10: 0x0000000000000000 r11: 0x0000000000000246
r12: 0x0000000000000103 r13: 0x00007ff7bbf26290 r14: 0x0000000000000006 r15: 0x0000000000000016
rip: 0x00007ff81c73c196 rfl: 0x0000000000000246 cr2: 0x0000000000000000
Logical CPU: 0
Error Code: 0x02000148
Trap Number: 133
Binary Images:
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0x104953000 - 0x10495afff binascii.cpython-310-darwin.so (*) <931a83c9-83b3-3397-a960-f6186a3e416c> /usr/local/Cellar/python@3.10/3.10.14/Frameworks/Python.framework/Versions/3.10/lib/python3.10/lib-dynload/binascii.cpython-310-darwin.so
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0x1049bf000 - 0x1049c6fff _struct.cpython-310-darwin.so (*) <c2f1001e-d4c2-31ba-9665-29d2cc159c17> /usr/local/Cellar/python@3.10/3.10.14/Frameworks/Python.framework/Versions/3.10/lib/python3.10/lib-dynload/_struct.cpython-310-darwin.so
0x1049d3000 - 0x1049dafff pyexpat.cpython-310-darwin.so (*) <ef73d690-90a6-30b8-9512-b6347c4d5ef3> /usr/local/Cellar/python@3.10/3.10.14/Frameworks/Python.framework/Versions/3.10/lib/python3.10/lib-dynload/pyexpat.cpython-310-darwin.so
0x1049e7000 - 0x1049f6fff _socket.cpython-310-darwin.so (*) <b6d662de-672d-3b1c-bf39-4cb33646aa98> /usr/local/Cellar/python@3.10/3.10.14/Frameworks/Python.framework/Versions/3.10/lib/python3.10/lib-dynload/_socket.cpython-310-darwin.so
0x104a03000 - 0x104a0afff array.cpython-310-darwin.so (*) <6001ca1b-1538-3c3e-803f-feff0c6c2287> /usr/local/Cellar/python@3.10/3.10.14/Frameworks/Python.framework/Versions/3.10/lib/python3.10/lib-dynload/array.cpython-310-darwin.so
0x104982000 - 0x104985fff _bisect.cpython-310-darwin.so (*) <485e81fc-ed82-3a46-9452-15a4ab1b467c> /usr/local/Cellar/python@3.10/3.10.14/Frameworks/Python.framework/Versions/3.10/lib/python3.10/lib-dynload/_bisect.cpython-310-darwin.so
0x104b17000 - 0x104b1afff _random.cpython-310-darwin.so (*) <61604403-c554-381f-95a3-ff00c9a92939> /usr/local/Cellar/python@3.10/3.10.14/Frameworks/Python.framework/Versions/3.10/lib/python3.10/lib-dynload/_random.cpython-310-darwin.so
0x104b27000 - 0x104b2efff _sha512.cpython-310-darwin.so (*) <5380019c-27e5-33c2-8b09-5b57cb06adb9> /usr/local/Cellar/python@3.10/3.10.14/Frameworks/Python.framework/Versions/3.10/lib/python3.10/lib-dynload/_sha512.cpython-310-darwin.so
0x7ff81c734000 - 0x7ff81c76dfff libsystem_kernel.dylib (*) <e82b6d50-ac03-370d-a74d-eb1a2725b6c5> /usr/lib/system/libsystem_kernel.dylib
0x7ff81c76e000 - 0x7ff81c779fff libsystem_pthread.dylib (*) <60b15e1f-39ea-33a1-8616-3af57dc1094a> /usr/lib/system/libsystem_pthread.dylib
0x7ff81c61b000 - 0x7ff81c6a2ff7 libsystem_c.dylib (*) <a720129c-c1cf-3e62-9d76-aa6fa0d31333> /usr/lib/system/libsystem_c.dylib
0x7ff81c413000 - 0x7ff81c4ab5ef dyld (*) <2faf54fd-58e6-360c-9bd8-2fbfe8be93d3> /usr/lib/dyld
External Modification Summary:
Calls made by other processes targeting this process:
task_for_pid: 0
thread_create: 0
thread_set_state: 0
Calls made by this process:
task_for_pid: 0
thread_create: 0
thread_set_state: 0
Calls made by all processes on this machine:
task_for_pid: 0
thread_create: 0
thread_set_state: 0
VM Region Summary:
ReadOnly portion of Libraries: Total=290.2M resident=0K(0%) swapped_out_or_unallocated=290.2M(100%)
Writable regions: Total=970.5M written=0K(0%) resident=0K(0%) swapped_out=0K(0%) unallocated=970.5M(100%)
VIRTUAL REGION
REGION TYPE SIZE COUNT (non-coalesced)
=========== ======= =======
Kernel Alloc Once 8K 1
MALLOC 187.2M 19
MALLOC guard page 24K 5
MALLOC_MEDIUM (reserved) 360.0M 3 reserved VM address space (unallocated)
MALLOC_NANO (reserved) 384.0M 1 reserved VM address space (unallocated)
STACK GUARD 8K 2
Stack 32.0M 2
VM_ALLOCATE 7172K 8
__DATA 3579K 155
__DATA_CONST 6002K 119
__DATA_DIRTY 339K 57
__LINKEDIT 171.6M 22
__OBJC_RO 66.3M 1
__OBJC_RW 2013K 2
__TEXT 118.6M 172
dyld private memory 260K 2
shared memory 20K 3
=========== ======= =======
TOTAL 1.3G 574
TOTAL, minus reserved VM space 594.7M 574
-----------
Full Report
-----------
{"app_name":"Python","timestamp":"2024-06-20 17:13:04.00 +0900","app_version":"3.10.14","slice_uuid":"00fef16c-f414-3007-b17e-5c5d39c99317","build_version":"3.10.14","platform":1,"bundleID":"org.python.python","share_with_app_devs":0,"is_first_party":0,"bug_type":"309","os_version":"macOS 13.6.7 (22G720)","roots_installed":0,"name":"Python","incident_id":"6BD81D45-E1DC-4840-8115-3FE476A10970"}
{
"uptime" : 430000,
"procRole" : "Unspecified",
"version" : 2,
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"releaseType" : "User"
},
"captureTime" : "2024-06-20 17:13:04.8525 +0900",
"incident" : "6BD81D45-E1DC-4840-8115-3FE476A10970",
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"cpuType" : "X86-64",
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"bundleInfo" : {"CFBundleShortVersionString":"3.10.14","CFBundleVersion":"3.10.14","CFBundleIdentifier":"org.python.python"},
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"exception" : {"codes":"0x0000000000000000, 0x0000000000000000","rawCodes":[0,0],"type":"EXC_CRASH","signal":"SIGABRT"},
"termination" : {"flags":0,"code":6,"namespace":"SIGNAL","indicator":"Abort trap: 6","byProc":"Python","byPid":46526},
"asi" : {"libsystem_c.dylib":["abort() called"]},
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Expected behavior
No Fatal Python Error, and no Problem Report for Python window
Steps to reproduce:
- Run the adapter:
python -m debugpy.adapter - Abort the adapter using Ctrl-C.
I also tried with different versions of debugpy, all the way to debugpy==1.0.0, and I still get the same problem.
int19h commented
This is probably caused by the message reader background thread waiting on stdin.read() when KeyboardInterrupt happens on main thread. If so, I think it could be fixed by catching the exception there and pre-emptively os.close(stdin_fd) before exiting.
amadanmath commented
I am not sure I understand it correctly, not knowing the structure of debugpy, but note that the same happens without KeyboardInterrupt, purely by executing the last line of the program from NeoVim's debugger (nvim-dap). So it seems it might be on any exit of pydebug, not just keyboard interrupted one. I don't know how to speak the pydebug protocol, so I can't test the hypothesis without the aid of an editor.