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=-4.0 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_PASS 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 0732BC43381 for ; Thu, 7 Mar 2019 19:01:06 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id C771C20675 for ; Thu, 7 Mar 2019 19:01:05 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1551985265; bh=jLsy14xrHiu+BFv96cMYF60EPBitx2fdM5bOBfEHQoo=; h=Date:From:To:Cc:Subject:In-Reply-To:References:List-ID:From; b=Np+RnuU1S/fYXayFCNHTmSp4q6gZyTgWBTmPq938G8lVuGgXVVnHuiUpRxLBVZtHK WBp/+CqMAraDmIkWICYRwmDVOBcgmckKC2n/6UzPKFDH/CJKBYpkkByp+EP/de/U42 TsuWImBpF4Ch/NtySqcS2yiTYoAZe3SgZLsFpWRY= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726714AbfCGTBE (ORCPT ); Thu, 7 Mar 2019 14:01:04 -0500 Received: from mail.linuxfoundation.org ([140.211.169.12]:40840 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726127AbfCGTBE (ORCPT ); Thu, 7 Mar 2019 14:01:04 -0500 Received: from akpm3.svl.corp.google.com (unknown [104.133.8.65]) by mail.linuxfoundation.org (Postfix) with ESMTPSA id 29654C646; Thu, 7 Mar 2019 19:01:03 +0000 (UTC) Date: Thu, 7 Mar 2019 11:01:02 -0800 From: Andrew Morton To: Alexey Dobriyan Cc: linux-kernel@vger.kernel.org, rong.a.chen@intel.com Subject: Re: [PATCH] proc: test with vsyscall in mind Message-Id: <20190307110102.914eaf61d17339c6ae9ca3ef@linux-foundation.org> In-Reply-To: <20190307183204.GA11405@avx2> References: <20190307183204.GA11405@avx2> X-Mailer: Sylpheed 3.6.0 (GTK+ 2.24.31; x86_64-pc-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, 7 Mar 2019 21:32:04 +0300 Alexey Dobriyan wrote: > Read from vsyscall page to tell if vsyscall is being used. > > Reported-by: kernel test robot > Signed-off-by: Alexey Dobriyan There's a lot of information missing from this changelog :( I rewrote it to this: : selftests: proc: proc-pid-vm : ======================================== : proc-pid-vm: proc-pid-vm.c:277: main: Assertion `rv == strlen(buf0)' failed. : Aborted Because the vsyscall mapping is enabled. Read from vsyscall page to tell if vsyscall is being used. Link: http://lkml.kernel.org/r/20190307183204.GA11405@avx2 Link: http://lkml.kernel.org/r/20190219094722.GB28258@shao2-debian Fixes: 34aab6bec23e7e9 ("proc: test /proc/*/maps, smaps, smaps_rollup, statm") Signed-off-by: Alexey Dobriyan Reported-by: kernel test robot Cc: Shuah Khan Signed-off-by: Andrew Morton