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=-8.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS 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 0F974C43381 for ; Fri, 19 Mar 2021 11:07:39 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id B3E8C64F74 for ; Fri, 19 Mar 2021 11:07:38 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229986AbhCSLHI (ORCPT ); Fri, 19 Mar 2021 07:07:08 -0400 Received: from pegase1.c-s.fr ([93.17.236.30]:15742 "EHLO pegase1.c-s.fr" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229806AbhCSLGx (ORCPT ); Fri, 19 Mar 2021 07:06:53 -0400 Received: from localhost (mailhub1-int [192.168.12.234]) by localhost (Postfix) with ESMTP id 4F21LL5Lzwz9tx8t; Fri, 19 Mar 2021 12:06:50 +0100 (CET) X-Virus-Scanned: Debian amavisd-new at c-s.fr Received: from pegase1.c-s.fr ([192.168.12.234]) by localhost (pegase1.c-s.fr [192.168.12.234]) (amavisd-new, port 10024) with ESMTP id NP4imNnYq17Y; Fri, 19 Mar 2021 12:06:50 +0100 (CET) Received: from messagerie.si.c-s.fr (messagerie.si.c-s.fr [192.168.25.192]) by pegase1.c-s.fr (Postfix) with ESMTP id 4F21LL4BwLz9tx8s; Fri, 19 Mar 2021 12:06:50 +0100 (CET) Received: from localhost (localhost [127.0.0.1]) by messagerie.si.c-s.fr (Postfix) with ESMTP id 02D8F8B972; Fri, 19 Mar 2021 12:06:50 +0100 (CET) X-Virus-Scanned: amavisd-new at c-s.fr Received: from messagerie.si.c-s.fr ([127.0.0.1]) by localhost (messagerie.si.c-s.fr [127.0.0.1]) (amavisd-new, port 10023) with ESMTP id Y3ZxVQgPlJNa; Fri, 19 Mar 2021 12:06:50 +0100 (CET) Received: from po16121vm.idsi0.si.c-s.fr (unknown [192.168.4.90]) by messagerie.si.c-s.fr (Postfix) with ESMTP id 145088B971; Fri, 19 Mar 2021 12:06:49 +0100 (CET) Received: by po16121vm.idsi0.si.c-s.fr (Postfix, from userid 0) id 7FE3D675FB; Fri, 19 Mar 2021 11:06:49 +0000 (UTC) Message-Id: From: Christophe Leroy Subject: [PATCH 00/10] Convert signal32 to user read access by block To: Benjamin Herrenschmidt , Paul Mackerras , Michael Ellerman , cmr@codefail.de Cc: linux-kernel@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-arch@vger.kernel.org Date: Fri, 19 Mar 2021 11:06:49 +0000 (UTC) Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Similarly to the work done earlier with writes, this series converts signal32 to using user_read_access_begin/end and unsafe_get_user() and friends. Applies on to of the signal64 series, ie on merge-test (ca6e327fefb2) Christophe Leroy (10): signal: Add unsafe_get_compat_sigset() powerpc/uaccess: Also perform 64 bits copies in unsafe_copy_from_user() on ppc32 powerpc/signal: Add unsafe_copy_ck{fpr/vsx}_from_user powerpc/signal32: Rename save_user_regs_unsafe() and save_general_regs_unsafe() powerpc/signal32: Remove ifdefery in middle of if/else in sigreturn() powerpc/signal32: Perform access_ok() inside restore_user_regs() powerpc/signal32: Reorder user reads in restore_tm_user_regs() powerpc/signal32: Convert restore_[tm]_user_regs() to user access block powerpc/signal32: Convert do_setcontext[_tm]() to user access block powerpc/signal32: Simplify logging in sigreturn() arch/powerpc/include/asm/ptrace.h | 2 +- arch/powerpc/include/asm/uaccess.h | 6 +- arch/powerpc/kernel/signal.h | 22 +++ arch/powerpc/kernel/signal_32.c | 251 ++++++++++++++++------------- include/linux/compat.h | 35 ++++ include/linux/uaccess.h | 1 + 6 files changed, 205 insertions(+), 112 deletions(-) -- 2.25.0