ALinrunrun opened a new issue, #19541:
URL: https://github.com/apache/tvm/issues/19541
### Expected behavior
TVM Relax should not crash the Python process when executing an imported
ONNX `Div` model with integer inputs.
For integer division by zero, TVM should either handle the case safely or
report a controlled runtime error instead of terminating the process with
`SIGFPE`.
### Actual behavior
The model compiles successfully, but calling the Relax VM crashes the
subprocess with exit code `-8`:
```
stdout: calling vm[main]
exit : -8
```
This happens when the divisor tensor contains zero values for an `INT32`
ONNX `Div` model.
### Environment
TVM: 0.14 environment / Relax ONNX frontend
Python: 3.11
Target: llvm
OS: Linux
### Steps to reproduce
```
import subprocess
import sys
import textwrap
SCRIPT = textwrap.dedent("""\
import numpy as np
import onnx
from onnx import helper, TensorProto
import tvm
from tvm import relax
from tvm.relax.frontend.onnx import from_onnx
node = helper.make_node("Div", ["a", "b"], ["y"])
graph = helper.make_graph(
[node],
"g",
[
helper.make_tensor_value_info("a", TensorProto.INT32, [4]),
helper.make_tensor_value_info("b", TensorProto.INT32, [4]),
],
[helper.make_tensor_value_info("y", TensorProto.INT32, [4])],
)
model = helper.make_model(
graph,
opset_imports=[helper.make_opsetid("", 18)],
)
model.ir_version = 9
mod = from_onnx(model, keep_params_in_input=False)
with tvm.transform.PassContext(opt_level=3):
ex = tvm.compile(mod, target=tvm.target.Target("llvm"))
vm = relax.VirtualMachine(ex, tvm.cpu())
a = np.array([42, 99, -50, 7], dtype=np.int32)
b = np.array([3, 0, 0, 1], dtype=np.int32)
print("calling vm[main]", flush=True)
out = vm["main"](
tvm.runtime.tensor(a, tvm.cpu()),
tvm.runtime.tensor(b, tvm.cpu()),
)
out = out[0] if isinstance(out, (list, tuple)) else out
print("returned:", out.numpy().tolist())
""")
proc = subprocess.run(
[sys.executable, "-c", SCRIPT],
capture_output=True,
text=True,
timeout=60,
)
print("stdout:", proc.stdout)
print("stderr:", proc.stderr)
print("exit :", proc.returncode)
```
### Triage
* needs-triage
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