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=-6.3 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_PASS,UNWANTED_LANGUAGE_BODY,USER_AGENT_GIT autolearn=unavailable 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 BC2C6C4360F for ; Mon, 11 Mar 2019 19:56:41 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 85D622087C for ; Mon, 11 Mar 2019 19:56:41 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1552334201; bh=KCYbM44UkkzAZSDmre6qaYGbY/SVl1TcHwJtGrV0v+s=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=c6YsFqeoUtc0Tuy+4llaLc4moPR4dqzj+0d3HLmYwe2MPRgOlH44CDZW3mW4qq8iv BGWCJrJVfbKrk88mA3TfPMIN76LDrJkf5mpoL3jfmI7pdoEsf/hGUx/Mq2SM/fE14U mwoSJhQXDJntAT3Z2Z06Xx5ytFIiUv+EAftw8zAU= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728807AbfCKT4k (ORCPT ); Mon, 11 Mar 2019 15:56:40 -0400 Received: from mail.kernel.org ([198.145.29.99]:33836 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728749AbfCKT4d (ORCPT ); Mon, 11 Mar 2019 15:56:33 -0400 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 4F7E121734; Mon, 11 Mar 2019 19:56:32 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1552334192; bh=KCYbM44UkkzAZSDmre6qaYGbY/SVl1TcHwJtGrV0v+s=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Fa3djMJpmJt4t/6qi7GZ76GuScwLcxd9+k8Pu94d0GW9n9RGM4fGm7VzSjSg2BDfx QZEngEhIcjjeMG2tol4O+xeLQ7JrNwU1ffjEc+M5t2VMxpnlViBg+FZ85+v3VoNm16 Vs5dGE6BV1FKs3PwACaWN5ijckjNUDGggsAfsmTA= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Guo Ren , Sasha Levin Subject: [PATCH AUTOSEL 4.20 40/52] csky: Fixup wrong pt_regs size Date: Mon, 11 Mar 2019 15:55:04 -0400 Message-Id: <20190311195516.137772-40-sashal@kernel.org> X-Mailer: git-send-email 2.19.1 In-Reply-To: <20190311195516.137772-1-sashal@kernel.org> References: <20190311195516.137772-1-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: Guo Ren [ Upstream commit 9216cd7231c12a8c391bb2c904d13695398d3453 ] The bug is from commit 2054f4af1957 ("csky: bugfix gdb coredump error.") We change the ELF_NGREG to ELF_NGREG - 2 to fit gdb&gcc define, but forgot modify ptrace regset. Now coredump use ELF_NRGEG to parse GPRs and ptrace use pt_regs_regset, so there are two different reg_sets for userspace. Signed-off-by: Guo Ren Signed-off-by: Sasha Levin --- arch/csky/kernel/ptrace.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/arch/csky/kernel/ptrace.c b/arch/csky/kernel/ptrace.c index 34b30257298f..b5e4a706c867 100644 --- a/arch/csky/kernel/ptrace.c +++ b/arch/csky/kernel/ptrace.c @@ -8,6 +8,7 @@ #include #include #include +#include #include #include #include @@ -161,7 +162,7 @@ static int fpr_set(struct task_struct *target, static const struct user_regset csky_regsets[] = { [REGSET_GPR] = { .core_note_type = NT_PRSTATUS, - .n = ELF_NGREG, + .n = sizeof(struct pt_regs) / sizeof(u32), .size = sizeof(u32), .align = sizeof(u32), .get = &gpr_get, -- 2.19.1