core dumped when using with SGX

[brenzi]

I'm trying to use some of parity substrate in sgx (the srml-contract module). I know that rust-sgx-sdk includes a fork of wasmi below third-party and I successfully ran the respective samplecode. As I saw that @elichai filing PR's over here I thought that payritytech/wasmi is actually catching up to work on SGX. It actually does build, but:

The Problem I get

Illegal instruction (core dumped)

as soon as I try to invoke a call to wasm. To be precise, core gets dumped here.

Reproduce

git clone https://github.com/scs/substraTEE-worker.git
cd substraTee-worker
git checkout brenzi-contract-modular
make
./bin/app getsignkey

[elichai]

Try and compile without --release and see if it's the same error as this : https://github.com/baidu/rust-sgx-sdk/issues/105

It probably is. Right now I still use a fork of wasmi with sgx_tstd, but this problem might be fixed in the allocator of baidu

(using sgx_tstd helps because it uses the regular hashmap which unlike hashbrown doesn't rely directly on pointer alignments)

[brenzi]

I'm already building without --release. I just modified the Makefile today to try sgx-gdb (sorry, forgot to push my repo when posting before). Can you point me to your branch so I can try?

[elichai]

https://github.com/enigmampc/wasmi/tree/sgx-1.0.7

[brenzi]

I had to increase heap size in enclave.config.xml

 <HeapMaxSize>0x20000000</HeapMaxSize>

a more graceful failure would be nice, but in this case I'm not sure wasmi could help as it was a failure caused by rust-sgx-sdk config

[Robbepop]

Closing this issue since it is super old and probably equally outdated. Also the legacy wasmi engine for which this bug has been reported is no longer supported by us.