Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S934667AbcLIQe3 (ORCPT ); Fri, 9 Dec 2016 11:34:29 -0500 Received: from mail.linuxfoundation.org ([140.211.169.12]:55412 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S934200AbcLIQSk (ORCPT ); Fri, 9 Dec 2016 11:18:40 -0500 From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Andreas Larsson , "David S. Miller" Subject: [PATCH 4.4 20/28] sparc32: Fix inverted invalid_frame_pointer checks on sigreturns Date: Fri, 9 Dec 2016 17:18:02 +0100 Message-Id: <20161209161748.775521163@linuxfoundation.org> X-Mailer: git-send-email 2.10.2 In-Reply-To: <20161209161747.923205441@linuxfoundation.org> References: <20161209161747.923205441@linuxfoundation.org> User-Agent: quilt/0.65 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1214 Lines: 37 4.4-stable review patch. If anyone has any objections, please let me know. ------------------ From: Andreas Larsson [ Upstream commit 07b5ab3f71d318e52c18cc3b73c1d44c908aacfa ] Signed-off-by: Andreas Larsson Signed-off-by: David S. Miller Signed-off-by: Greg Kroah-Hartman --- arch/sparc/kernel/signal_32.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) --- a/arch/sparc/kernel/signal_32.c +++ b/arch/sparc/kernel/signal_32.c @@ -89,7 +89,7 @@ asmlinkage void do_sigreturn(struct pt_r sf = (struct signal_frame __user *) regs->u_regs[UREG_FP]; /* 1. Make sure we are not getting garbage from the user */ - if (!invalid_frame_pointer(sf, sizeof(*sf))) + if (invalid_frame_pointer(sf, sizeof(*sf))) goto segv_and_exit; if (get_user(ufp, &sf->info.si_regs.u_regs[UREG_FP])) @@ -150,7 +150,7 @@ asmlinkage void do_rt_sigreturn(struct p synchronize_user_stack(); sf = (struct rt_signal_frame __user *) regs->u_regs[UREG_FP]; - if (!invalid_frame_pointer(sf, sizeof(*sf))) + if (invalid_frame_pointer(sf, sizeof(*sf))) goto segv; if (get_user(ufp, &sf->regs.u_regs[UREG_FP]))