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=-12.1 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, MENTIONS_GIT_HOSTING,SIGNED_OFF_BY,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 61BDFC5B578 for ; Wed, 3 Jul 2019 08:28:18 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 2F07E218A4 for ; Wed, 3 Jul 2019 08:28:18 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=zytor.com header.i=@zytor.com header.b="ySIPEOGI" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727217AbfGCI2Q (ORCPT ); Wed, 3 Jul 2019 04:28:16 -0400 Received: from terminus.zytor.com ([198.137.202.136]:40361 "EHLO terminus.zytor.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727045AbfGCI2Q (ORCPT ); Wed, 3 Jul 2019 04:28:16 -0400 Received: from terminus.zytor.com (localhost [127.0.0.1]) by terminus.zytor.com (8.15.2/8.15.2) with ESMTPS id x638S2083205103 (version=TLSv1.3 cipher=TLS_AES_256_GCM_SHA384 bits=256 verify=NO); Wed, 3 Jul 2019 01:28:02 -0700 DKIM-Filter: OpenDKIM Filter v2.11.0 terminus.zytor.com x638S2083205103 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=zytor.com; s=2019061801; t=1562142483; bh=9UlTJipWCRtOw5/9IBZBryeb5TA2GQdlEvSESszGafI=; h=Date:From:Cc:Reply-To:In-Reply-To:References:To:Subject:From; b=ySIPEOGI5mK+Gn8qHTjkIwe+1RLMC+ynOGLDKY3Oj54hYncVX+l2VypfxGB3jR1ZV pEhP+SyCOi+cImO3ghDgUDHUkEmFsK7aPal67rswvTYdDvExeWkOCZ+XEd2D+ogxpB 1hXI/ihExpKncZ55Ua5XNLX2J0I6dW6Pr9hZBmEeRm9lvtdyYjOODqUt/S+NgYjACQ yhwrPVCBhlDVwIpGEncett0ADrGhFdgWZ7wm0nV3725z2T9hKWUZZ6741YYGsgUM1e Fm7L6iNenqmg5p3kevCCikRonjilJNdJNCyxh3F4Y7Fu8RVMachhgd+tFIzB+xruMZ X+VPsrtTbrMWA== Received: (from tipbot@localhost) by terminus.zytor.com (8.15.2/8.15.2/Submit) id x638S2TQ3205100; Wed, 3 Jul 2019 01:28:02 -0700 Date: Wed, 3 Jul 2019 01:28:02 -0700 X-Authentication-Warning: terminus.zytor.com: tipbot set sender to tipbot@zytor.com using -f From: tip-bot for Sebastian Andrzej Siewior Message-ID: Cc: namit@vmware.com, mingo@kernel.org, tglx@linutronix.de, peterz@infradead.org, hpa@zytor.com, bigeasy@linutronix.de, luto@kernel.org, linux-kernel@vger.kernel.org Reply-To: luto@kernel.org, linux-kernel@vger.kernel.org, tglx@linutronix.de, peterz@infradead.org, hpa@zytor.com, namit@vmware.com, mingo@kernel.org, bigeasy@linutronix.de In-Reply-To: <20190701173354.2pe62hhliok2afea@linutronix.de> References: <20190701173354.2pe62hhliok2afea@linutronix.de> To: linux-tip-commits@vger.kernel.org Subject: [tip:x86/urgent] x86/ldt: Initialize the context lock for init_mm Git-Commit-ID: 32232b350d7cd93cdc65fe5a453e6a40b539e9f9 X-Mailer: tip-git-log-daemon Robot-ID: Robot-Unsubscribe: Contact to get blacklisted from these emails MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain; charset=UTF-8 Content-Disposition: inline Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Commit-ID: 32232b350d7cd93cdc65fe5a453e6a40b539e9f9 Gitweb: https://git.kernel.org/tip/32232b350d7cd93cdc65fe5a453e6a40b539e9f9 Author: Sebastian Andrzej Siewior AuthorDate: Mon, 1 Jul 2019 19:33:54 +0200 Committer: Thomas Gleixner CommitDate: Wed, 3 Jul 2019 10:25:04 +0200 x86/ldt: Initialize the context lock for init_mm The mutex mm->context->lock for init_mm is not initialized for init_mm. This wasn't a problem because it remained unused. This changed however since commit 4fc19708b165c ("x86/alternatives: Initialize temporary mm for patching") Initialize the mutex for init_mm. Fixes: 4fc19708b165c ("x86/alternatives: Initialize temporary mm for patching") Signed-off-by: Sebastian Andrzej Siewior Signed-off-by: Thomas Gleixner Reviewed-by: Nadav Amit Cc: Peter Zijlstra Cc: Andy Lutomirski Link: https://lkml.kernel.org/r/20190701173354.2pe62hhliok2afea@linutronix.de --- arch/x86/include/asm/mmu.h | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/x86/include/asm/mmu.h b/arch/x86/include/asm/mmu.h index 5ff3e8af2c20..e78c7db87801 100644 --- a/arch/x86/include/asm/mmu.h +++ b/arch/x86/include/asm/mmu.h @@ -59,6 +59,7 @@ typedef struct { #define INIT_MM_CONTEXT(mm) \ .context = { \ .ctx_id = 1, \ + .lock = __MUTEX_INITIALIZER(mm.context.lock), \ } void leave_mm(int cpu);