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=-7.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_PASS,URIBL_BLOCKED,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 39E53C282C3 for ; Thu, 24 Jan 2019 20:12:25 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 0B156217D7 for ; Thu, 24 Jan 2019 20:12:25 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1548360745; bh=5CR/BHIJDsb5V195UOdgvnrZMmAWROelrEdun2ZWWWw=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=zhxRg9FJrqBrDtxVFkXJ8G8pmw6aSJhP4Z+NahHHmyuIsof1wNsyqkX1hKjVO2RTz zT1rUaK8MPJ2QRdwbR/3O/TTy/QsdEllknCKwVaXjPO0cqPNQcm24LOU7YX4nlxSCX xc9BUXOegSgz9jrrDV7auXf4aSeLNxutlgRad9z0= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730268AbfAXUMX (ORCPT ); Thu, 24 Jan 2019 15:12:23 -0500 Received: from mail.kernel.org ([198.145.29.99]:51892 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729680AbfAXT0C (ORCPT ); Thu, 24 Jan 2019 14:26:02 -0500 Received: from localhost (5356596B.cm-6-7b.dynamic.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 6753F218FD; Thu, 24 Jan 2019 19:26:01 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1548357961; bh=5CR/BHIJDsb5V195UOdgvnrZMmAWROelrEdun2ZWWWw=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=t/5Sw3jE4vBKi+pVdhDdmmzfMce2EjUFDrG5HqLXRM/O/DUoA/R+cUsxnNvaH6x2s fp4Zu9xfE6gcvTr16a9LtafYFG2k3DaJph+oysGwYSZbBx+GbeQW6X/n7yl0GMy7Ur T0PyYiiV73Mn/a8xk0AjUd38d3amuRbXXCzaKatg= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Arnd Bergmann , Paul Burton , linux-mips@vger.kernel.org Subject: [PATCH 4.4 051/104] mips: fix n32 compat_ipc_parse_version Date: Thu, 24 Jan 2019 20:19:40 +0100 Message-Id: <20190124190201.415332191@linuxfoundation.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190124190154.968308875@linuxfoundation.org> References: <20190124190154.968308875@linuxfoundation.org> User-Agent: quilt/0.65 X-stable: review X-Patchwork-Hint: ignore MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 4.4-stable review patch. If anyone has any objections, please let me know. ------------------ From: Arnd Bergmann commit 5a9372f751b5350e0ce3d2ee91832f1feae2c2e5 upstream. While reading through the sysvipc implementation, I noticed that the n32 semctl/shmctl/msgctl system calls behave differently based on whether o32 support is enabled or not: Without o32, the IPC_64 flag passed by user space is rejected but calls without that flag get IPC_64 behavior. As far as I can tell, this was inadvertently changed by a cleanup patch but never noticed by anyone, possibly nobody has tried using sysvipc on n32 after linux-3.19. Change it back to the old behavior now. Fixes: 78aaf956ba3a ("MIPS: Compat: Fix build error if CONFIG_MIPS32_COMPAT but no compat ABI.") Signed-off-by: Arnd Bergmann Signed-off-by: Paul Burton Cc: linux-mips@vger.kernel.org Cc: stable@vger.kernel.org # 3.19+ Signed-off-by: Greg Kroah-Hartman --- arch/mips/Kconfig | 1 + 1 file changed, 1 insertion(+) --- a/arch/mips/Kconfig +++ b/arch/mips/Kconfig @@ -2972,6 +2972,7 @@ config MIPS32_O32 config MIPS32_N32 bool "Kernel support for n32 binaries" depends on 64BIT + select ARCH_WANT_COMPAT_IPC_PARSE_VERSION select COMPAT select MIPS32_COMPAT select SYSVIPC_COMPAT if SYSVIPC