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 Received: from picard.linux.it (picard.linux.it [213.254.12.146]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 0D0E7C64ED8 for ; Mon, 27 Feb 2023 11:23:41 +0000 (UTC) Received: from picard.linux.it (localhost [IPv6:::1]) by picard.linux.it (Postfix) with ESMTP id 666783CDE53 for ; Mon, 27 Feb 2023 12:23:39 +0100 (CET) Received: from in-6.smtp.seeweb.it (in-6.smtp.seeweb.it [217.194.8.6]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-384) server-digest SHA384) (No client certificate requested) by picard.linux.it (Postfix) with ESMTPS id 4EE6A3CAF43 for ; Mon, 27 Feb 2023 12:23:29 +0100 (CET) Received: from smtp-out1.suse.de (smtp-out1.suse.de [IPv6:2001:67c:2178:6::1c]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by in-6.smtp.seeweb.it (Postfix) with ESMTPS id 18398145E0B2 for ; Mon, 27 Feb 2023 12:23:25 +0100 (CET) Received: from relay2.suse.de (relay2.suse.de [149.44.160.134]) by smtp-out1.suse.de (Postfix) with ESMTP id 47DFE219C3; Mon, 27 Feb 2023 11:23:24 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_rsa; t=1677497004; h=from:from:reply-to:reply-to:date:date:message-id:message-id:to:to: cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=Z94SqzQfItGYtMc6Fz/VBURyFxttY9pGANoAKvf0xl8=; b=udLSapz23soyitYuyguFWutlwatgWJsmnQOiRPxfC4ABBDqkbAieLf3FIdDduSVkCJsuKf ayDPTcNdcox3DAe43dSz2JvsnFlkZ/IOr8kOnnLQiAZZIZKWMXdecC1XGxWILUJSpcyTTT CbYlM5IceLDkDGmk9MeyN5mala0/rok= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_ed25519; t=1677497004; h=from:from:reply-to:reply-to:date:date:message-id:message-id:to:to: cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=Z94SqzQfItGYtMc6Fz/VBURyFxttY9pGANoAKvf0xl8=; b=IKIkXQ8LfL0d+jnY+dHudsPFI8VVmOLMSghsD8qoTLMbNc7kVYpFhD+QKAgN7m8LxtNbvb LSgly5Ly26b4CaAA== Received: from g78 (unknown [10.163.28.198]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by relay2.suse.de (Postfix) with ESMTPS id 48A442C141; Mon, 27 Feb 2023 11:23:23 +0000 (UTC) References: <87h6vpq2lk.fsf@suse.de> <20230220102645.16842-1-william.roche@oracle.com> <20230220102645.16842-2-william.roche@oracle.com> User-agent: mu4e 1.8.13; emacs 28.2 From: Richard Palethorpe To: william.roche@oracle.com Date: Mon, 27 Feb 2023 10:16:04 +0000 Organization: Linux Private Site In-reply-to: <20230220102645.16842-2-william.roche@oracle.com> Message-ID: <87k003bbdn.fsf@suse.de> MIME-Version: 1.0 X-Virus-Scanned: clamav-milter 0.102.4 at in-6.smtp.seeweb.it X-Virus-Status: Clean Subject: Re: [LTP] [LTP PATCH v3 1/1] madvise11: Add test for memory allocation / Soft-offlining possible race X-BeenThere: ltp@lists.linux.it X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux Test Project List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Reply-To: rpalethorpe@suse.de Cc: ltp@lists.linux.it Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: ltp-bounces+ltp=archiver.kernel.org@lists.linux.it Sender: "ltp" Hello, william.roche@oracle.com writes: > From: William Roche > > Test a possible race condition between mmap() allocating memory and > madvise() used to Soft-offline an unrelated memory page. > As fixed with the following kernel commit: > d4ae9916ea29 mm: soft-offline: close the race against page allocation > > If everything works, restore all poisoned pages created by this test. > > Reviewed-by: Richard Palethorpe > Reviewed-by: Petr Vorel > Signed-off-by: William Roche Merged, thanks! I think this test is well worth the effort. This took an extra week to get merged because we were at a workshop. > + > +static int sigbus_received; I added volatile in an extra patch to this. Usually I would recommend tst_atomic* instead, but it is protected by a mutex anyway. -- Thank you, Richard. -- Mailing list info: https://lists.linux.it/listinfo/ltp