On Sat, Jul 27, 2019 at 11:16:01PM +0000, Jethro Beekman wrote: > A user is reporting CPU soft lockup with Intel SDK version 2.1 and 2.5 > driver. This only happens when using SGX in conjunction with DPDK (Data > Plane Development Kit) in the same process. The process is running two > enclaves that together are bigger than the EPC. > > Dmesg output: > > 2.1 driver: > https://github.com/YangZhou1997/dpdk-sgx-crash/blob/master/dmesg-full.log > > 2.5 driver: https://github.com/YangZhou1997/dpdk-sgx-crash/blob/master/dmesg-full-2.5.0.log The log from 2.5 doesn't show any SGX activity, rather it's generating remote TLB flushes during CoW. That would imply this is a generic remote TLB flush (or SMP function call IPIs) issue and not an EPC bug. > > Enclave memory layout: > https://github.com/YangZhou1997/dpdk-sgx-crash/blob/master/sgxs.info > > -- > Jethro Beekman | Fortanix >
