From patchwork Wed May 26 12:47:39 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jarkko Sakkinen X-Patchwork-Id: 448511 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-19.4 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, INCLUDES_CR_TRAILER, INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id E98FCC47088 for ; Wed, 26 May 2021 12:51:00 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id CD2F1613EC for ; Wed, 26 May 2021 12:51:00 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234705AbhEZMw3 (ORCPT ); Wed, 26 May 2021 08:52:29 -0400 Received: from mail.kernel.org ([198.145.29.99]:51280 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234895AbhEZMtX (ORCPT ); Wed, 26 May 2021 08:49:23 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id 8CE2A6124B; Wed, 26 May 2021 12:47:51 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1622033272; bh=lA46JFIklDyHfspUH9KCw638iPxeE3A9j2MvKEpQ4TA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=nO9dG0UtvSZ0YEEikfdhppE7GS0HAV557ijPQLLDA5siJEjHggbvHRWdtC9ZIxJDy Sav+AFhZvI7UccN1eLy7R4yFQrUStKXIl+H3VEmpkRBvyV6Mn6ODtS3QutPUjrnG5c U/nNcMrN34raH9Ff/oF6gp7eHeDbx5zFnOimx6ipYxQKNFHILpmOFDHBz28/LfsNGI vgYVk2Ahy78Q0AUwjZC6tXl/qA+6RhDvfAY4hrU3aPlx7UWOv7ou8JyKuzuBX6nl9P o+uLEl6KnYuDaY++tkYzg6msRdDlZ4B1smXF9EDgxQsEzqMzZegGSnQIYUoWjbgbtM tQJ239Gp+hX5g== From: Jarkko Sakkinen To: shuah@kernel.org Cc: linux-kselftest@vger.kernel.org, linux-sgx@vger.kernel.org, Reinette Chatre , Jarkko Sakkinen , Dave Hansen , linux-kernel@vger.kernel.org Subject: [PATCH v7 3/4] selftests/sgx: Dump enclave memory map Date: Wed, 26 May 2021 15:47:39 +0300 Message-Id: <20210526124740.16783-3-jarkko@kernel.org> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210526124740.16783-1-jarkko@kernel.org> References: <20210526124740.16783-1-jarkko@kernel.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-kselftest@vger.kernel.org Often, it's useful to check whether /proc/self/maps looks sane when dealing with memory mapped objects, especially when they are JIT'ish dynamically constructed objects. Therefore, dump "/dev/sgx_enclave" matching lines from the memory map in FIXTURE_SETUP(). Signed-off-by: Jarkko Sakkinen --- tools/testing/selftests/sgx/main.c | 14 ++++++++++++++ 1 file changed, 14 insertions(+) diff --git a/tools/testing/selftests/sgx/main.c b/tools/testing/selftests/sgx/main.c index 8694772c8fd9..d658882b5dd2 100644 --- a/tools/testing/selftests/sgx/main.c +++ b/tools/testing/selftests/sgx/main.c @@ -117,6 +117,8 @@ FIXTURE_SETUP(enclave) Elf64_Sym *sgx_enter_enclave_sym = NULL; struct vdso_symtab symtab; struct encl_segment *seg; + char maps_line[256]; + FILE *maps_file; unsigned int i; void *addr; @@ -167,6 +169,18 @@ FIXTURE_SETUP(enclave) memset(&self->run, 0, sizeof(self->run)); self->run.tcs = self->encl.encl_base; + maps_file = fopen("/proc/self/maps", "r"); + if (maps_file != NULL) { + while (fgets(maps_line, sizeof(maps_line), maps_file) != NULL) { + maps_line[strlen(maps_line) - 1] = '\0'; + + if (strstr(maps_line, "/dev/sgx_enclave")) + TH_LOG("%s", maps_line); + } + + fclose(maps_file); + } + err: if (!sgx_enter_enclave_sym) encl_delete(&self->encl);