From mboxrd@z Thu Jan 1 00:00:00 1970 Received: with ECARTIS (v1.0.0; list linux-mips); Mon, 15 Jan 2018 13:43:42 +0100 (CET) Received: from mail.linuxfoundation.org ([140.211.169.12]:50082 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by eddie.linux-mips.org with ESMTP id S23994719AbeAOMmq0edOK (ORCPT ); Mon, 15 Jan 2018 13:42:46 +0100 Received: from localhost (LFbn-1-12258-90.w90-92.abo.wanadoo.fr [90.92.71.90]) by mail.linuxfoundation.org (Postfix) with ESMTPSA id 001B31204; Mon, 15 Jan 2018 12:42:39 +0000 (UTC) From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, "Maciej W. Rozycki" , James Hogan , Paul Burton , Alex Smith , Dave Martin , linux-mips@linux-mips.org, Ralf Baechle Subject: [PATCH 4.9 12/96] MIPS: Also verify sizeof `elf_fpreg_t with PTRACE_SETREGSET Date: Mon, 15 Jan 2018 13:34:11 +0100 Message-Id: <20180115123405.571006869@linuxfoundation.org> X-Mailer: git-send-email 2.15.1 In-Reply-To: <20180115123404.270241256@linuxfoundation.org> References: <20180115123404.270241256@linuxfoundation.org> User-Agent: quilt/0.65 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Return-Path: X-Envelope-To: <"|/home/ecartis/ecartis -s linux-mips"> (uid 0) X-Orcpt: rfc822;linux-mips@linux-mips.org Original-Recipient: rfc822;linux-mips@linux-mips.org X-archive-position: 62124 X-ecartis-version: Ecartis v1.0.0 Sender: linux-mips-bounce@linux-mips.org Errors-to: linux-mips-bounce@linux-mips.org X-original-sender: gregkh@linuxfoundation.org Precedence: bulk List-help: List-unsubscribe: List-software: Ecartis version 1.0.0 List-Id: linux-mips X-List-ID: linux-mips List-subscribe: List-owner: List-post: List-archive: X-list: linux-mips 4.9-stable review patch. If anyone has any objections, please let me know. ------------------ From: Maciej W. Rozycki commit 006501e039eec411842bb3150c41358867d320c2 upstream. Complement commit d614fd58a283 ("mips/ptrace: Preserve previous registers for short regset write") and like with the PTRACE_GETREGSET ptrace(2) request also apply a BUILD_BUG_ON check for the size of the `elf_fpreg_t' type in the PTRACE_SETREGSET request handler. Signed-off-by: Maciej W. Rozycki Fixes: d614fd58a283 ("mips/ptrace: Preserve previous registers for short regset write") Cc: James Hogan Cc: Paul Burton Cc: Alex Smith Cc: Dave Martin Cc: linux-mips@linux-mips.org Cc: linux-kernel@vger.kernel.org Patchwork: https://patchwork.linux-mips.org/patch/17929/ Signed-off-by: Ralf Baechle Signed-off-by: Greg Kroah-Hartman --- arch/mips/kernel/ptrace.c | 1 + 1 file changed, 1 insertion(+) --- a/arch/mips/kernel/ptrace.c +++ b/arch/mips/kernel/ptrace.c @@ -467,6 +467,7 @@ static int fpr_get_msa(struct task_struc u64 fpr_val; int err; + BUILD_BUG_ON(sizeof(fpr_val) != sizeof(elf_fpreg_t)); for (i = 0; i < NUM_FPU_REGS; i++) { fpr_val = get_fpr64(&target->thread.fpu.fpr[i], 0); err = user_regset_copyout(pos, count, kbuf, ubuf,