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Created on 2021-07-23 04:27 by xxm, last changed 2022-04-11 14:59 by admin. This issue is now closed.
| Messages (4) | |||
|---|---|---|---|
| msg398028 - (view) | Author: Xinmeng Xia (xxm) | Date: 2021-07-23 04:27 | |
This program can trigger "Aborted (core dumped)" on Python 3.9.0, Python 3.8.0, Python3.10.0a2. It trigger " segmentation fault" on the master (Python 3.11.0a0).
==================================
import weakref
class Object:
def __init__(self, arg):
self.arg = arg
def test_set_callback_attribute():
x = Object(1)
callback = lambda ref: None
callback = weakref.ref(callback, x)
with test_set_callback_attribute():
pass
test_set_callback_attribute()
==================================
Crashes on the master (Python 3.11.0a0)
------------------------------------------------------------
.....
Traceback (most recent call last):
File "/home/xxm/Desktop/IFuzzer/bugs/CPython/IFuzzer/test_weakref/test_set_callback_attribute__1.py", line 26, in test_set_callback_attribute
callback = weakref.ref(callback, x)
^^^^^^^^
TypeError: 'Object' object is not callable
Exception ignored in: <__main__.Object object at 0x7f3e2d56ca90>
Traceback (most recent call last):
File "/home/xxm/Desktop/IFuzzer/bugs/CPython/IFuzzer/test_weakref/test_set_callback_attribute__1.py", line 26, in test_set_callback_attribute
Segmentation fault (core dumped)
--------------------------------------------------------------
Crashes on the older version of Python
-----------------------------------------------------------
File "/home/xxm/Desktop/IFuzzer/bugs/CPython/IFuzzer/test_weakref/test_set_callback_attribute__1.py", line 27 in test_set_callback_attribute
File "/home/xxm/Desktop/IFuzzer/bugs/CPython/IFuzzer/test_weakref/test_set_callback_attribute__1.py", line 27 in test_set_callback_attribute
File "/home/xxm/Desktop/IFuzzer/bugs/CPython/IFuzzer/test_weakref/test_set_callback_attribute__1.py", line 27 in test_set_callback_attribute
File "/home/xxm/Desktop/IFuzzer/bugs/CPython/IFuzzer/test_weakref/test_set_callback_attribute__1.py", line 27 in test_set_callback_attribute
File "/home/xxm/Desktop/IFuzzer/bugs/CPython/IFuzzer/test_weakref/test_set_callback_attribute__1.py", line 27 in test_set_callback_attribute
File "/home/xxm/Desktop/IFuzzer/bugs/CPython/IFuzzer/test_weakref/test_set_callback_attribute__1.py", line 27 in test_set_callback_attribute
File "/home/xxm/Desktop/IFuzzer/bugs/CPython/IFuzzer/test_weakref/test_set_callback_attribute__1.py", line 27 in test_set_callback_attribute
...
Aborted (core dumped)
---------------------------------------------------------------
System: Ubuntu 16.04
|
|||
| msg398088 - (view) | Author: Dennis Sweeney (Dennis Sweeney) *  |
Date: 2021-07-23 18:57 | |
### Simplified crasher
from weakref import ref
def f():
ref(lambda: 0, [])
f()
f()
########################
Running this in debug mode, I got a failed assertion at traceback.c,
line 746, `assert(source_line);`.
If that assertion is commented out, a null pointer is dereferenced in
_PyPegen_byte_offset_to_character_offset()
|
|||
| msg398115 - (view) | Author: Dennis Sweeney (Dennis Sweeney) * |
Date: 2021-07-24 02:30 | |
I think GH-27313 will fix this |
|||
| msg398269 - (view) | Author: Dennis Sweeney (Dennis Sweeney) * |
Date: 2021-07-26 23:14 | |
Indeed, I got no crash on main after GH-27313. I also got no crash on 3.10 after GH-23568. Its backport to 3.9 (GH-24501) would have fixed this, but broke the stable ABI and was reverted. This was related to bpo-42500. I'm closing this "fixed". Feel free to re-open if you still see an issue. |
|||
| History | |||
|---|---|---|---|
| Date | User | Action | Args |
| 2022-04-11 14:59:47 | admin | set | github: 88882 |
| 2021-07-26 23:14:56 | Dennis Sweeney | set | status: open -> closed resolution: fixed messages: + msg398269 stage: resolved |
| 2021-07-24 02:30:41 | Dennis Sweeney | set | messages: + msg398115 |
| 2021-07-23 18:57:03 | Dennis Sweeney | set | nosy:
+ Dennis Sweeney messages: + msg398088 |
| 2021-07-23 04:27:09 | xxm | create | |