Hi all, recently I am using SDK to develop a simple multi-threading program,
but sometimes ECall would fail. The branch we use is `v2.0.0-preview`.
# Steps to reproduce:
I used a modified code from
`incubator-teaclave-sgx-sdk/samplecode/helloworld/app/src/main.rs`:
```rust
fn main() {
let enclave = match SgxEnclave::create(ENCLAVE_FILE, true) {
Ok(enclave) => {
println!("[+] Init Enclave Successful {}!", enclave.eid());
enclave
}
Err(err) => {
println!("[-] Init Enclave Failed {}!", err.as_str());
return;
}
};
// let enclave = Arc::new(enclave);
loop {
let mut v = vec![];
for _ in 0..16 {
let eid = enclave.eid();
let handle = thread::spawn(move || {
let input_string =
String::from("This is a normal world string passed into
Enclave!\n");
let mut retval = SgxStatus::Success;
let result = unsafe {
say_something(
eid,
&mut retval,
input_string.as_ptr() as *const u8,
input_string.len(),
)
};
match result {
SgxStatus::Success => println!("[+] ECall Success..."),
_ => println!("[-] ECall Enclave Failed {}!",
result.as_str()),
}
});
v.push(handle);
}
for handle in v {
handle.join().unwrap();
}
}
}
```
The enclave's configuration is
```xml
<EnclaveConfiguration>
<ProdID>0</ProdID>
<ISVSVN>0</ISVSVN>
<StackMaxSize>0x40000</StackMaxSize>
<HeapMaxSize>0x1000000</HeapMaxSize>
<TCSNum>32</TCSNum>
<TCSPolicy>1</TCSPolicy>
<DisableDebug>0</DisableDebug>
<MiscSelect>0</MiscSelect>
<MiscMask>0xFFFFFFFF</MiscMask>
</EnclaveConfiguration>
```
The output is
```sh
$ SGX_MOED=HW make && cd bin && ./app
# Previous outputs omitted.
This is a normal world string passed into Enclave!
This is a normal world string passed into Enclave!
This is a in-Enclave Rust string!
[+] ECall Success...
This is a in-Enclave Rust string!
[+] ECall Success...
[-] ECall Enclave Failed EnclaveLost!
```
I wonder where the root cause of this issue is. Is this caused by Rust SGX SDK
or Intel's SDK? Thanks in advance!
--
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https://github.com/apache/incubator-teaclave-sgx-sdk/issues/432
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