From mboxrd@z Thu Jan 1 00:00:00 1970 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=-15.7 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED 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 E6740C433FE for ; Wed, 9 Dec 2020 00:44:19 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id B2C2A23AA8 for ; Wed, 9 Dec 2020 00:44:19 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730243AbgLIAoE (ORCPT ); Tue, 8 Dec 2020 19:44:04 -0500 Received: from mail.kernel.org ([198.145.29.99]:55692 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725906AbgLIAoD (ORCPT ); Tue, 8 Dec 2020 19:44:03 -0500 Date: Tue, 08 Dec 2020 16:43:22 -0800 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linux-foundation.org; s=korg; t=1607474603; bh=LPw8XF/jMhxcNS9PKKlSl6fCGJQFVUZjWHd36mAAYe8=; h=From:To:Subject:From; b=G4TZZkWV4YYntQTvgVsGDvk4o9eu5HFtPLInpgsKxoh5caUbc3ukwyA+Mfb0j6rj4 DRzDJqhtY491f2qBX6wh7z8x1fhVblOnaYSuLjed23p3EeD6JS7wOMbqorowdj855h KAasKw2iIpnoNfFrZp2PaBOR3UzyUR3sazMp7fsU= From: akpm@linux-foundation.org To: mm-commits@vger.kernel.org, rppt@linux.vnet.ibm.com, aarcange@redhat.com, peterx@redhat.com Subject: + userfaultfd-selftests-hint-the-test-runner-on-required-privilege.patch added to -mm tree Message-ID: <20201209004322.yn4E7%akpm@linux-foundation.org> User-Agent: s-nail v14.9.10 Precedence: bulk Reply-To: linux-kernel@vger.kernel.org List-ID: X-Mailing-List: mm-commits@vger.kernel.org The patch titled Subject: userfaultfd/selftests: hint the test runner on required privilege has been added to the -mm tree. Its filename is userfaultfd-selftests-hint-the-test-runner-on-required-privilege.patch This patch should soon appear at https://ozlabs.org/~akpm/mmots/broken-out/userfaultfd-selftests-hint-the-test-runner-on-required-privilege.patch and later at https://ozlabs.org/~akpm/mmotm/broken-out/userfaultfd-selftests-hint-the-test-runner-on-required-privilege.patch Before you just go and hit "reply", please: a) Consider who else should be cc'ed b) Prefer to cc a suitable mailing list as well c) Ideally: find the original patch on the mailing list and do a reply-to-all to that, adding suitable additional cc's *** Remember to use Documentation/process/submit-checklist.rst when testing your code *** The -mm tree is included into linux-next and is updated there every 3-4 working days ------------------------------------------------------ From: Peter Xu Subject: userfaultfd/selftests: hint the test runner on required privilege Now userfaultfd test program requires either root or ptrace privilege due to the signal/event tests. When UFFDIO_API failed, hint the test runner about this fact verbosely. Link: https://lkml.kernel.org/r/20201208024709.7701-4-peterx@redhat.com Signed-off-by: Peter Xu Cc: Andrea Arcangeli Cc: Mike Rapoport Signed-off-by: Andrew Morton --- tools/testing/selftests/vm/userfaultfd.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) --- a/tools/testing/selftests/vm/userfaultfd.c~userfaultfd-selftests-hint-the-test-runner-on-required-privilege +++ a/tools/testing/selftests/vm/userfaultfd.c @@ -794,7 +794,8 @@ static int userfaultfd_open(int features uffdio_api.api = UFFD_API; uffdio_api.features = features; if (ioctl(uffd, UFFDIO_API, &uffdio_api)) { - fprintf(stderr, "UFFDIO_API\n"); + fprintf(stderr, "UFFDIO_API failed.\nPlease make sure to " + "run with either root or ptrace capability.\n"); return 1; } if (uffdio_api.api != UFFD_API) { _ Patches currently in -mm which might be from peterx@redhat.com are userfaultfd-selftests-always-dump-something-in-modes.patch userfaultfd-selftests-fix-retval-check-for-userfaultfd_open.patch userfaultfd-selftests-hint-the-test-runner-on-required-privilege.patch