➜
This issue tracker has been migrated to GitHub,
and is currently read-only.
For more information,
see the GitHub FAQs in the Python's Developer Guide.
Created on 2019-04-04 15:12 by Ahmed Soliman, last changed 2022-04-11 14:59 by admin. This issue is now closed.
| Files | ||||
|---|---|---|---|---|
| File name | Uploaded | Description | Edit | |
| id:000147,sig:11,src:000000,op:arith8,pos:53,val:-23 | Ahmed Soliman, 2019-04-04 15:12 | crash generator | ||
| Messages (2) | |||
|---|---|---|---|
| msg339448 - (view) | Author: Ahmed Soliman (Ahmed Soliman) | Date: 2019-04-04 15:12 | |
I was fuzzing python pyc and I got this segmentation fault
```
==25016==ERROR: AddressSanitizer: SEGV on unknown address 0x000000000000 (pc 0x0000007d147f bp 0x7ffc6875cfc0 sp 0x7ffc6875c7e0 T0)
==25016==The signal is caused by a WRITE memory access.
==25016==Hint: address points to the zero page.
#0 0x7d147e in _Py_INCREF /home/cpython/./Include/object.h:453:18
#1 0x7d147e in _PyEval_EvalFrameDefault /home/cpython/Python/ceval.c:1186
#2 0x7e38bc in PyEval_EvalFrameEx /home/cpython/Python/ceval.c:625:12
#3 0x7e38bc in _PyEval_EvalCodeWithName /home/cpython/Python/ceval.c:4036
#4 0x7b72d3 in PyEval_EvalCodeEx /home/cpython/Python/ceval.c:4065:12
#5 0x7b72d3 in PyEval_EvalCode /home/cpython/Python/ceval.c:602
#6 0x911643 in run_eval_code_obj /home/cpython/Python/pythonrun.c:1047:9
#7 0x911643 in run_pyc_file /home/cpython/Python/pythonrun.c:1100
#8 0x911643 in PyRun_SimpleFileExFlags /home/cpython/Python/pythonrun.c:420
#9 0x9102cb in PyRun_AnyFileExFlags /home/cpython/Python/pythonrun.c:85:16
#10 0x517df8 in pymain_run_file /home/cpython/Modules/main.c:346:15
#11 0x517df8 in pymain_run_python /home/cpython/Modules/main.c:511
#12 0x517df8 in _Py_RunMain /home/cpython/Modules/main.c:583
#13 0x51901a in pymain_main /home/cpython/Modules/main.c:612:12
#14 0x5193e3 in _Py_UnixMain /home/cpython/Modules/main.c:636:12
#15 0x7fd06244375a in __libc_start_main (/lib64/libc.so.6+0x2375a)
#16 0x437919 in _start (/home/cpython/python+0x437919)
AddressSanitizer can not provide additional info.
SUMMARY: AddressSanitizer: SEGV /home/cpython/./Include/object.h:453:18 in _Py_INCREF
==25016==ABORTING
```
Python version Python 3.8.0a3+ (heads/master:cb0748d393, Apr 4 2019, 16:40:18)
[Clang 8.0.0 (tags/RELEASE_800/final)] on linux
|
|||
| msg339450 - (view) | Author: Serhiy Storchaka (serhiy.storchaka) *  |
Date: 2019-04-04 15:56 | |
Using random binary data instead of a .pyc file is an undefined behavior. .pyc file is a cache of the .py file. |
|||
| History | |||
|---|---|---|---|
| Date | User | Action | Args |
| 2022-04-11 14:59:13 | admin | set | github: 80707 |
| 2019-04-04 15:56:23 | serhiy.storchaka | set | status: open -> closed resolution: not a bug messages: + msg339450 stage: resolved |
| 2019-04-04 15:15:32 | SilentGhost | set | nosy:
+ serhiy.storchaka type: crash components: + Interpreter Core |
| 2019-04-04 15:12:11 | Ahmed Soliman | create | |