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=-9.0 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,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 9E716C169C4 for ; Mon, 11 Feb 2019 15:54:29 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 64AEA21B18 for ; Mon, 11 Feb 2019 15:54:29 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1549900469; bh=/1AKaazZBrp7vCjUjcn1mZqGMVItqWxAcv/D3igiKkA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=m2qAPQmxP79N/hMMlSp4ulrUHKp8W6J5S+aXHuEwxh2/9rWe1GK7bTABHjT0/rK1W PDgDzCIjdBaCbIa7jf53puHQuqilUTwJH7W4y1El5sAOQla3aOAk6osh0/ovgwZ/In jIbs6ohIx1uxR/Rp0Fv7sru5SDCbRZqQugjUmgxE= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731668AbfBKPy2 (ORCPT ); Mon, 11 Feb 2019 10:54:28 -0500 Received: from mail.kernel.org ([198.145.29.99]:44494 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1731097AbfBKOfo (ORCPT ); Mon, 11 Feb 2019 09:35:44 -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 AE36E2080F; Mon, 11 Feb 2019 14:35:43 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1549895744; bh=/1AKaazZBrp7vCjUjcn1mZqGMVItqWxAcv/D3igiKkA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=ot6wNnzC1A+QRe7JUVwmWlUlLXCmBGSNJgktSHzV2OGRnnSEehBQ62c8VDvUAEMno xBei/R5Anpae9VGDpLpQR2rLuba52BzWL26tNqKgCqiLjJWCndmME+acMUjOeR1V9k EEf9msnk3CQx2mVa7Ix6BxBYNF8gAHSCLh1XPZ5w= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Dave Martin , Will Deacon , Sasha Levin Subject: [PATCH 4.20 281/352] arm64/sve: ptrace: Fix SVE_PT_REGS_OFFSET definition Date: Mon, 11 Feb 2019 15:18:28 +0100 Message-Id: <20190211141904.817811652@linuxfoundation.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190211141846.543045703@linuxfoundation.org> References: <20190211141846.543045703@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 4.20-stable review patch. If anyone has any objections, please let me know. ------------------ [ Upstream commit ee1b465b303591d3a04d403122bbc0d7026520fb ] SVE_PT_REGS_OFFSET is supposed to indicate the offset for skipping over the ptrace NT_ARM_SVE header (struct user_sve_header) to the start of the SVE register data proper. However, currently SVE_PT_REGS_OFFSET is defined in terms of struct sve_context, which is wrong: that structure describes the SVE header in the signal frame, not in the ptrace regset. This patch fixes the definition to use the ptrace header structure struct user_sve_header instead. By good fortune, the two structures are the same size anyway, so there is no functional or ABI change. Signed-off-by: Dave Martin Signed-off-by: Will Deacon Signed-off-by: Sasha Levin --- arch/arm64/include/uapi/asm/ptrace.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm64/include/uapi/asm/ptrace.h b/arch/arm64/include/uapi/asm/ptrace.h index a36227fdb084..65ef8b0fdb0e 100644 --- a/arch/arm64/include/uapi/asm/ptrace.h +++ b/arch/arm64/include/uapi/asm/ptrace.h @@ -131,7 +131,7 @@ struct user_sve_header { /* Offset from the start of struct user_sve_header to the register data */ #define SVE_PT_REGS_OFFSET \ - ((sizeof(struct sve_context) + (SVE_VQ_BYTES - 1)) \ + ((sizeof(struct user_sve_header) + (SVE_VQ_BYTES - 1)) \ / SVE_VQ_BYTES * SVE_VQ_BYTES) /* -- 2.19.1