Raising during line tracing events causes assertion failures when opcode tracing is enabled #96864
Description
Example:
import sys def tracefunc(frame, event, arg): frame.f_trace_opcodes = True if event == 'line': 1 / 0 return tracefunc def main(): pass sys.settrace(tracefunc) main()3.12.0a0 (main:e47b96c44f) crashes with the following message:
$ ../cpython/python -Xfaulthandler crash.py python: Python/ceval.c:1107: _PyEval_EvalFrameDefault: Assertion `!_PyErr_Occurred(tstate)' failed. Fatal Python error: Aborted Current thread 0x00007f06c1a47740 (most recent call first): File "/home/.../crash.py", line 13 in <module> Aborted (core dumped) Stack trace:
#0 0x00007ffff7d3f34c in __pthread_kill_implementation () from /usr/lib/libc.so.6 #1 0x00007ffff7cf24b8 in raise () from /usr/lib/libc.so.6 #2 0x00007ffff7cdc534 in abort () from /usr/lib/libc.so.6 #3 0x00007ffff7cdc45c in __assert_fail_base.cold () from /usr/lib/libc.so.6 #4 0x00007ffff7ceb116 in __assert_fail () from /usr/lib/libc.so.6 #5 0x00005555557b7497 in _PyEval_EvalFrameDefault (tstate=0x555555b46aa8 <_PyRuntime+180616>, frame=0x7ffff7fbc020, throwflag=0) at Python/ceval.c:1107 #6 0x00005555557c9d3b in _PyEval_EvalFrame (tstate=tstate@entry=0x555555b46aa8 <_PyRuntime+180616>, frame=frame@entry=0x7ffff7fbc020, throwflag=throwflag@entry=0) at ./Include/internal/pycore_ceval.h:95 #7 0x00005555557c9e53 in _PyEval_Vector (tstate=tstate@entry=0x555555b46aa8 <_PyRuntime+180616>, func=func@entry=0x7ffff77e5e90, locals=locals@entry=0x7ffff77895b0, args=args@entry=0x0, argcount=argcount@entry=0, kwnames=kwnames@entry=0x0) at Python/ceval.c:5789 #8 0x00005555557c9f69 in PyEval_EvalCode (co=co@entry=0x7ffff79a1fe0, globals=globals@entry=0x7ffff77895b0, locals=locals@entry=0x7ffff77895b0) at Python/ceval.c:591 #9 0x00005555558246b3 in run_eval_code_obj (tstate=tstate@entry=0x555555b46aa8 <_PyRuntime+180616>, co=co@entry=0x7ffff79a1fe0, globals=globals@entry=0x7ffff77895b0, locals=locals@entry=0x7ffff77895b0) at Python/pythonrun.c:1713 #10 0x0000555555824778 in run_mod (mod=mod@entry=0x555555c3fb10, filename=filename@entry=0x7ffff77f1310, globals=globals@entry=0x7ffff77895b0, locals=locals@entry=0x7ffff77895b0, flags=flags@entry=0x7fffffffe548, arena=arena@entry=0x7ffff77ec040) at Python/pythonrun.c:1734 #11 0x0000555555824840 in pyrun_file (fp=fp@entry=0x555555b8f530, filename=filename@entry=0x7ffff77f1310, start=start@entry=257, globals=globals@entry=0x7ffff77895b0, locals=locals@entry=0x7ffff77895b0, closeit=closeit@entry=1, flags=0x7fffffffe548) at Python/pythonrun.c:1629 #12 0x0000555555827664 in _PyRun_SimpleFileObject (fp=fp@entry=0x555555b8f530, filename=filename@entry=0x7ffff77f1310, closeit=closeit@entry=1, flags=flags@entry=0x7fffffffe548) at Python/pythonrun.c:439 #13 0x0000555555827823 in _PyRun_AnyFileObject (fp=fp@entry=0x555555b8f530, filename=filename@entry=0x7ffff77f1310, closeit=closeit@entry=1, flags=flags@entry=0x7fffffffe548) at Python/pythonrun.c:78 #14 0x0000555555845d79 in pymain_run_file_obj (program_name=program_name@entry=0x7ffff77f1380, filename=filename@entry=0x7ffff77f1310, skip_source_first_line=0) at Modules/main.c:360 #15 0x0000555555845ea1 in pymain_run_file (config=config@entry=0x555555b2b818 <_PyRuntime+69368>) at Modules/main.c:379 #16 0x0000555555846637 in pymain_run_python (exitcode=exitcode@entry=0x7fffffffe6c4) at Modules/main.c:610 #17 0x00005555558468e3 in Py_RunMain () at Modules/main.c:689 #18 0x000055555584695a in pymain_main (args=args@entry=0x7fffffffe720) at Modules/main.c:719 #19 0x0000555555846a20 in Py_BytesMain (argc=<optimized out>, argv=<optimized out>) at Modules/main.c:743 #20 0x000055555564c742 in main (argc=<optimized out>, argv=<optimized out>) at ./Programs/python.c:153.10.7 prints this traceback:
$ python -Xfaulthandler crash.py Traceback (most recent call last): File "/home/.../crash.py", line 10, in main pass File "/home/.../crash.py", line 6, in tracefunc 1 / 0 ZeroDivisionError: division by zero The above exception was the direct cause of the following exception: Traceback (most recent call last): File "/home/.../crash.py", line 13, in <module> main() SystemError: _PyEval_EvalFrameDefault returned a result with an exception set OS version: Linux 5.16.9-arch1-1 x86_64.