lock user-mode and semantic-bugs

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diff --git a/results/classifier/user-mode-bugs/2123 b/results/classifier/user-mode-bugs/2123
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+
+
+Invalid subprocess commands spawns successfully when running under QEMU
+Description of problem:
+When executing a subprocess from with a non-existing command EQMU still spawns a process.
+
+Consider this small rust program for instance:
+```rust
+use std::process::Command;
+
+fn main() {
+    match Command::new("thisdoesnotexist").spawn() {
+        Ok(child) => {
+            println!("Child process id is {}", child.id());
+        }
+        Err(_) => {
+            println!("This should happen");
+        }
+    }
+}
+```
+
+**Executing with `qemu-aarch64`:**
+```shell
+qemu-aarch64 ./rust-app
+Child process id is 20182
+```
+
+**Executing regularly:**
+```shell
+./rust-app
+This should happen
+```