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 AC0EDC636CB for ; Thu, 15 Jul 2021 18:10:36 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 986D06120A for ; Thu, 15 Jul 2021 18:10:36 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237416AbhGOSN2 (ORCPT ); Thu, 15 Jul 2021 14:13:28 -0400 Received: from out03.mta.xmission.com ([166.70.13.233]:59026 "EHLO out03.mta.xmission.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237256AbhGOSN1 (ORCPT ); Thu, 15 Jul 2021 14:13:27 -0400 Received: from in01.mta.xmission.com ([166.70.13.51]:32868) by out03.mta.xmission.com with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.93) (envelope-from ) id 1m45oe-0027Qn-3X; Thu, 15 Jul 2021 12:10:32 -0600 Received: from ip68-227-160-95.om.om.cox.net ([68.227.160.95]:56964 helo=email.xmission.com) by in01.mta.xmission.com with esmtpsa (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.93) (envelope-from ) id 1m45od-00CSsZ-3J; Thu, 15 Jul 2021 12:10:31 -0600 From: ebiederm@xmission.com (Eric W. Biederman) To: Marco Elver Cc: Arnd Bergmann , Florian Weimer , "David S. Miller" , Peter Zijlstra , Ingo Molnar , Thomas Gleixner , Peter Collingbourne , Dmitry Vyukov , Alexander Potapenko , sparclinux , linux-arch , Linux Kernel Mailing List , Linux API , kasan-dev References: Date: Thu, 15 Jul 2021 13:09:45 -0500 In-Reply-To: (Eric W. Biederman's message of "Fri, 30 Apr 2021 17:49:45 -0500") Message-ID: <87a6mnzbx2.fsf_-_@disp2133> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/26.1 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain X-XM-SPF: eid=1m45od-00CSsZ-3J;;;mid=<87a6mnzbx2.fsf_-_@disp2133>;;;hst=in01.mta.xmission.com;;;ip=68.227.160.95;;;frm=ebiederm@xmission.com;;;spf=neutral X-XM-AID: U2FsdGVkX19QOntclRPIA/u9ynQgdmZ9S2p6E+o6EFA= X-SA-Exim-Connect-IP: 68.227.160.95 X-SA-Exim-Mail-From: ebiederm@xmission.com Subject: [PATCH 0/6] Final si_trapno bits X-SA-Exim-Version: 4.2.1 (built Sat, 08 Feb 2020 21:53:50 +0000) X-SA-Exim-Scanned: Yes (on in01.mta.xmission.com) Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org As a part of a fix for the ABI of the newly added SIGTRAP TRAP_PERF a si_trapno was reduced to an ordinary extention of the _sigfault case of struct siginfo. When Linus saw the complete set of changes come in as a fix he requested that the set of changes be trimmed down to just what was necessary to fix the SIGTRAP TRAP_PERF ABI. I had intended to get the rest of the changes into the merge window for v5.14 but I dropped the ball. I have made the changes to stop using __ARCH_SI_TRAPNO be per architecture so they are easier to review. In doing so I found one place on alpha where I used send_sig_fault instead of send_sig_fault_trapno(... si_trapno = 0). That would not have changed the userspace behavior but it did make the kernel code less clear. My rule in these patches is everywhere that siginfo layout calls for SIL_FAULT_TRAPNO the code uses either force_sig_fault_trapno or send_sig_fault_trapno. And of course I have rebased and compile tested Marco's compile time assert patches. Eric Eric W. Biederman (3): signal/sparc: si_trapno is only used with SIGILL ILL_ILLTRP signal/alpha: si_trapno is only used with SIGFPE and SIGTRAP TRAP_UNK signal: Remove the generic __ARCH_SI_TRAPNO support Marco Elver (3): sparc64: Add compile-time asserts for siginfo_t offsets arm: Add compile-time asserts for siginfo_t offsets arm64: Add compile-time asserts for siginfo_t offsets arch/alpha/include/uapi/asm/siginfo.h | 2 -- arch/alpha/kernel/osf_sys.c | 2 +- arch/alpha/kernel/signal.c | 4 +-- arch/alpha/kernel/traps.c | 26 +++++++++--------- arch/alpha/mm/fault.c | 4 +-- arch/arm/kernel/signal.c | 37 +++++++++++++++++++++++++ arch/arm64/kernel/signal.c | 37 +++++++++++++++++++++++++ arch/arm64/kernel/signal32.c | 37 +++++++++++++++++++++++++ arch/mips/include/uapi/asm/siginfo.h | 2 -- arch/sparc/include/uapi/asm/siginfo.h | 3 -- arch/sparc/kernel/process_64.c | 2 +- arch/sparc/kernel/signal32.c | 35 +++++++++++++++++++++++ arch/sparc/kernel/signal_64.c | 34 +++++++++++++++++++++++ arch/sparc/kernel/sys_sparc_32.c | 2 +- arch/sparc/kernel/sys_sparc_64.c | 2 +- arch/sparc/kernel/traps_32.c | 22 +++++++-------- arch/sparc/kernel/traps_64.c | 44 +++++++++++++---------------- arch/sparc/kernel/unaligned_32.c | 2 +- arch/sparc/mm/fault_32.c | 2 +- arch/sparc/mm/fault_64.c | 2 +- include/linux/sched/signal.h | 11 ++------ kernel/signal.c | 52 ++++++++++++++++++++++++++--------- 22 files changed, 276 insertions(+), 88 deletions(-)