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gh-136870: fix data races in instrumentation of bytecode #136994

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Merged
merged 3 commits into from
Jul 24, 2025
Merged

gh-136870: fix data races in instrumentation of bytecode #136994

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443fc76
fix deinstrumentation
kumaraditya303 Jul 23, 2025
f86569c
Merge branch 'main' into instrumentation
kumaraditya303 Jul 24, 2025
955430a
📜🤖 Added by blurb_it.
blurb-it[bot] Jul 24, 2025
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fix deinstrumentation
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@kumaraditya303
kumaraditya303 committed Jul 23, 2025
commit 443fc768fcf1224c33da178d691987f66a7f45cb
20 changes: 12 additions & 8 deletions Python/instrumentation.c
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Original file line number Diff line number Diff line change
Expand Up @@ -1190,9 +1190,10 @@ call_instrumentation_vector(
break;
}
else {
LOCK_CODE(code);
PyInterpreterState *interp = tstate->interp;
_PyEval_StopTheWorld(interp);
remove_tools(code, offset, event, 1 << tool);
UNLOCK_CODE();
_PyEval_StartTheWorld(interp);
}
}
}
Expand Down Expand Up @@ -1381,9 +1382,10 @@ _Py_call_instrumentation_line(PyThreadState *tstate, _PyInterpreterFrame* frame,
}
else {
/* DISABLE */
LOCK_CODE(code);
PyInterpreterState *interp = tstate->interp;
_PyEval_StopTheWorld(interp);
remove_line_tools(code, i, 1 << tool);
UNLOCK_CODE();
_PyEval_StartTheWorld(interp);
}
} while (tools);
Py_DECREF(line_obj);
Expand Down Expand Up @@ -1438,9 +1440,10 @@ _Py_call_instrumentation_instruction(PyThreadState *tstate, _PyInterpreterFrame*
}
else {
/* DISABLE */
LOCK_CODE(code);
PyInterpreterState *interp = tstate->interp;
_PyEval_StopTheWorld(interp);
remove_per_instruction_tools(code, offset, 1 << tool);
UNLOCK_CODE();
_PyEval_StartTheWorld(interp);
}
}
Py_DECREF(offset_obj);
Expand Down Expand Up @@ -2995,9 +2998,10 @@ branch_handler_vectorcall(
// Orphaned NOT_TAKEN -- Jump removed by the compiler
return res;
}
LOCK_CODE(code);
PyInterpreterState *interp = _PyInterpreterState_GET();
_PyEval_StopTheWorld(interp);
remove_tools(code, offset, other_event, 1 << self->tool_id);
UNLOCK_CODE();
_PyEval_StartTheWorld(interp);
}
return res;
}
Expand Down
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