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=-9.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,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 91618C282CD for ; Mon, 28 Jan 2019 16:11:36 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 61B722147A for ; Mon, 28 Jan 2019 16:11:36 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1548691896; bh=oXvu1Y3xSPb1qaS7ygk3qh2N0TdlzvTvNxK+3Zqpbp0=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=BhkSe9QzT9utBlup5C2uj25EyWO62LnznHDr2HCLxrCPe4NQTFGJntSavFN+kb6oo 3HCSeCbhCmAgHKYttd5d2mKgNaDUsxwDFYAavtrn0OHzecAoubRBhIKPGaJkyJFdvu 3mSeIMjOmfO2JzUWgH4SjkK7hyJaIObuxJMskLok= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731493AbfA1QLe (ORCPT ); Mon, 28 Jan 2019 11:11:34 -0500 Received: from mail.kernel.org ([198.145.29.99]:38544 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1732971AbfA1QL3 (ORCPT ); Mon, 28 Jan 2019 11:11:29 -0500 Received: from sasha-vm.mshome.net (c-73-47-72-35.hsd1.nh.comcast.net [73.47.72.35]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 66F8C2147A; Mon, 28 Jan 2019 16:11:26 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1548691888; bh=oXvu1Y3xSPb1qaS7ygk3qh2N0TdlzvTvNxK+3Zqpbp0=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=TePvf149GHoi2mOnBCCEEA7jkGLKhI2m0wzfDpw1LRxZncnSXtUKOTloKCNqsIXfB 1EfegB96jjQZrgzrBlHCwoeTal/BJRtMTm52sWRLj3yxH3N3uO/t0HGdYoXaZCmPoO nky3iHST1vP5gjNcOjlk7pGNBX/gCB/mQGeMvsO8= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Dave Martin , Will Deacon , Sasha Levin Subject: [PATCH AUTOSEL 4.19 250/258] arm64/sve: ptrace: Fix SVE_PT_REGS_OFFSET definition Date: Mon, 28 Jan 2019 10:59:16 -0500 Message-Id: <20190128155924.51521-250-sashal@kernel.org> X-Mailer: git-send-email 2.19.1 In-Reply-To: <20190128155924.51521-1-sashal@kernel.org> References: <20190128155924.51521-1-sashal@kernel.org> MIME-Version: 1.0 X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Dave Martin [ 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 98c4ce55d9c3..ad64d2c92ef5 100644 --- a/arch/arm64/include/uapi/asm/ptrace.h +++ b/arch/arm64/include/uapi/asm/ptrace.h @@ -130,7 +130,7 @@ 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