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=-2.4 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 autolearn=no 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 9420CC433E0 for ; Thu, 28 May 2020 12:36:55 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 6FF7520707 for ; Thu, 28 May 2020 12:36:55 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="aisp8qRE" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2389815AbgE1Mgx (ORCPT ); Thu, 28 May 2020 08:36:53 -0400 Received: from us-smtp-delivery-1.mimecast.com ([207.211.31.120]:43488 "EHLO us-smtp-1.mimecast.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S2389734AbgE1Mgu (ORCPT ); Thu, 28 May 2020 08:36:50 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1590669408; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=GRwkxAXKadNb8L6vblVDH1YHL3lLq/VSX5Jl4TgNeUQ=; b=aisp8qREGtJsTbhPQlr2s8xSZwp7hGPo1T28LgtDPb5QIxQIwcQYEhGT491TzHBOzU8x35 7GyoCgLjPa/s4OYmJIr9YVFm/gGS092UoYxLMP9CMMbp4VusWw3PvfHZqFpzVKkPtFunbI YQ5kzlTrzrE0soVaAApCl+ZX5hO0hKI= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-485-EyyxwPu9Nla98fHg1KPQ8w-1; Thu, 28 May 2020 08:36:45 -0400 X-MC-Unique: EyyxwPu9Nla98fHg1KPQ8w-1 Received: from smtp.corp.redhat.com (int-mx07.intmail.prod.int.phx2.redhat.com [10.5.11.22]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 81F52108597B; Thu, 28 May 2020 12:36:43 +0000 (UTC) Received: from dhcp-27-174.brq.redhat.com (unknown [10.40.192.7]) by smtp.corp.redhat.com (Postfix) with SMTP id A969F1001268; Thu, 28 May 2020 12:36:41 +0000 (UTC) Received: by dhcp-27-174.brq.redhat.com (nbSMTP-1.00) for uid 1000 oleg@redhat.com; Thu, 28 May 2020 14:36:43 +0200 (CEST) Date: Thu, 28 May 2020 14:36:40 +0200 From: Oleg Nesterov To: Greentime Hu Cc: guoren@linux.alibaba.com, vincent.chen@sifive.com, paul.walmsley@sifive.com, palmerdabbelt@google.com, linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org Subject: Re: [RFC PATCH v5 01/13] ptrace: Use regset_size() for dynamic regset Message-ID: <20200528123639.GA19813@redhat.com> References: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.24 (2015-08-30) X-Scanned-By: MIMEDefang 2.84 on 10.5.11.22 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 05/28, Greentime Hu wrote: > > --- a/kernel/ptrace.c > +++ b/kernel/ptrace.c > @@ -888,7 +888,7 @@ static int ptrace_regset(struct task_struct *task, int req, unsigned int type, > > regset_no = regset - view->regsets; > kiov->iov_len = min(kiov->iov_len, > - (__kernel_size_t) (regset->n * regset->size)); > + (__kernel_size_t) regset_size(task, regset)); Acked-by: Oleg Nesterov