From 897429d5f20d8293bd08641ea7af7f7ee43a6678 Mon Sep 17 00:00:00 2001 From: Dmitrii Kuvaiskii Date: Mon, 4 Jan 2021 01:01:41 -0800 Subject: [PATCH] [Pal/Linux-SGX] Print error message if buggy SGX driver is detected --- Pal/src/host/Linux-SGX/sgx_framework.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/Pal/src/host/Linux-SGX/sgx_framework.c b/Pal/src/host/Linux-SGX/sgx_framework.c index 6905c25e..9f5342e7 100644 --- a/Pal/src/host/Linux-SGX/sgx_framework.c +++ b/Pal/src/host/Linux-SGX/sgx_framework.c @@ -310,6 +310,11 @@ int add_pages_to_enclave(sgx_arch_secs_t* secs, void* addr, void* user_addr, uns } uint64_t added_size = ret > 0 ? (uint64_t)ret : param.count; + if (!added_size) { + SGX_DBG(DBG_E, "Intel SGX driver did not perform EADD. This may indicate a buggy " + "driver, please update to the most recent version.\n"); + return -EPERM; + } param.offset += added_size; if (param.src != (uint64_t)g_zero_pages)