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=-6.1 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 89218C07E85 for ; Tue, 11 Dec 2018 15:43:10 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 4EBA620880 for ; Tue, 11 Dec 2018 15:43:10 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1544542990; bh=hhL/76R98sHmWbd3paeuyqZ/dN5KWx69qwWTOTpvASE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=JuVd5K+AZB0HplLAqjsHKA0kSiRzzTUCvHXALMlCdWBXeIu4dFG8iG1KWEeAHWSml D4qYcsRk/JAix0DTEy0stX5qVrGVNrE0Nh9SqMxcdcsQ9rdWsrzmMqR0UvRMQnQuHB /JQ9MasesSDnbUKFeo307puHckHA1jO3FbjtHXgo= DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 4EBA620880 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=linuxfoundation.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727445AbeLKPnI (ORCPT ); Tue, 11 Dec 2018 10:43:08 -0500 Received: from mail.kernel.org ([198.145.29.99]:59556 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727424AbeLKPnI (ORCPT ); Tue, 11 Dec 2018 10:43:08 -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 D53F220870; Tue, 11 Dec 2018 15:43:06 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1544542987; bh=hhL/76R98sHmWbd3paeuyqZ/dN5KWx69qwWTOTpvASE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Z+WwX5ZSJTNXNLW5pHtsyDxapdfjcQRLBu1I+6zLe75vthbCiOkDK2jSZfcfdsrjk b3esPXXrRnpMtKRMUKd3WBFd0F0ARZ7/JVLifDxxd71Jawsj6f7g2BDWJ0a7HC64rF UGCoWA/UzgN1kgm80dSBEqCdT6/oqw8O+OIu0Lp8= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, "Dmitry V. Levin" , Paul Burton , Elvira Khabirova , Ralf Baechle , James Hogan , linux-mips@linux-mips.org Subject: [PATCH 3.18 24/54] mips: fix mips_get_syscall_arg o32 check Date: Tue, 11 Dec 2018 16:41:12 +0100 Message-Id: <20181211151547.336853752@linuxfoundation.org> X-Mailer: git-send-email 2.20.0 In-Reply-To: <20181211151546.010073210@linuxfoundation.org> References: <20181211151546.010073210@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 3.18-stable review patch. If anyone has any objections, please let me know. ------------------ From: Dmitry V. Levin commit c50cbd85cd7027d32ac5945bb60217936b4f7eaf upstream. When checking for TIF_32BIT_REGS flag, mips_get_syscall_arg() should use the task specified as its argument instead of the current task. This potentially affects all syscall_get_arguments() users who specify tasks different from the current. Fixes: c0ff3c53d4f99 ("MIPS: Enable HAVE_ARCH_TRACEHOOK.") Signed-off-by: Dmitry V. Levin Signed-off-by: Paul Burton Patchwork: https://patchwork.linux-mips.org/patch/21185/ Cc: Elvira Khabirova Cc: Ralf Baechle Cc: James Hogan Cc: linux-mips@linux-mips.org Cc: linux-kernel@vger.kernel.org Cc: stable@vger.kernel.org # v3.13+ Signed-off-by: Greg Kroah-Hartman --- arch/mips/include/asm/syscall.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/arch/mips/include/asm/syscall.h +++ b/arch/mips/include/asm/syscall.h @@ -57,7 +57,7 @@ static inline unsigned long mips_get_sys #ifdef CONFIG_64BIT case 4: case 5: case 6: case 7: #ifdef CONFIG_MIPS32_O32 - if (test_thread_flag(TIF_32BIT_REGS)) + if (test_tsk_thread_flag(task, TIF_32BIT_REGS)) return get_user(*arg, (int *)usp + n); else #endif