From patchwork Mon Feb 14 16:34:38 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Arnd Bergmann X-Patchwork-Id: 12745829 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id AE58EC43219 for ; Mon, 14 Feb 2022 16:35:58 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1356519AbiBNQgF (ORCPT ); Mon, 14 Feb 2022 11:36:05 -0500 Received: from mxb-00190b01.gslb.pphosted.com ([23.128.96.19]:42586 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1356447AbiBNQfv (ORCPT ); Mon, 14 Feb 2022 11:35:51 -0500 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 7460460D88; Mon, 14 Feb 2022 08:35:43 -0800 (PST) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 10E276145A; Mon, 14 Feb 2022 16:35:43 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 95D20C340E9; Mon, 14 Feb 2022 16:35:32 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1644856542; bh=NCPtyXY6GSVFAxA9xMH/uI0qVAvzui4f6HWShmHq7S4=; h=From:To:Cc:Subject:Date:From; b=AD+OGCC91QW3gC/dZKsZFSSWI0QKTWjyYSyPe3ESJoZsA18Yxd+6C2XmKbO+BufBV pgOTeKAy/H78mpdds/cyxQ3VhN4bBP5a5vjc0WbkFTjxn+hvTh5aHadh4RocZ3TKWZ eb6b0ouxjuiSDysMNzxh//PeMK4OQFXVj3bLmv5B1B7q8Uq/AO4RDRlThvSeYzr3Ly Gc0VXxNLiJ5WO1pIX67udGR/GCDjJQpiIxvmjGV1mzioNZwxT26v6bU0vORAmaN8AJ nAspwe5m/jH1WNhsqM0Qybjj0jz1yeUDm3LP9c3MsBrk2+9J1cYolEm51L9D0B9ZO/ R/tiDrFKWPKmA== From: Arnd Bergmann To: Linus Torvalds , Christoph Hellwig , linux-arch@vger.kernel.org, linux-mm@kvack.org, linux-api@vger.kernel.org, arnd@arndb.de, linux-kernel@vger.kernel.org Cc: linux@armlinux.org.uk, will@kernel.org, guoren@kernel.org, bcain@codeaurora.org, geert@linux-m68k.org, monstr@monstr.eu, tsbogend@alpha.franken.de, nickhu@andestech.com, green.hu@gmail.com, dinguyen@kernel.org, shorne@gmail.com, deller@gmx.de, mpe@ellerman.id.au, peterz@infradead.org, mingo@redhat.com, mark.rutland@arm.com, hca@linux.ibm.com, dalias@libc.org, davem@davemloft.net, richard@nod.at, x86@kernel.org, jcmvbkbc@gmail.com, ebiederm@xmission.com, akpm@linux-foundation.org, ardb@kernel.org, linux-alpha@vger.kernel.org, linux-snps-arc@lists.infradead.org, linux-arm-kernel@lists.infradead.org, linux-csky@vger.kernel.org, linux-hexagon@vger.kernel.org, linux-ia64@vger.kernel.org, linux-m68k@lists.linux-m68k.org, linux-mips@vger.kernel.org, openrisc@lists.librecores.org, linux-parisc@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-riscv@lists.infradead.org, linux-s390@vger.kernel.org, linux-sh@vger.kernel.org, sparclinux@vger.kernel.org, linux-um@lists.infradead.org, linux-xtensa@linux-xtensa.org Subject: [PATCH 00/14] clean up asm/uaccess.h, kill set_fs for good Date: Mon, 14 Feb 2022 17:34:38 +0100 Message-Id: <20220214163452.1568807-1-arnd@kernel.org> X-Mailer: git-send-email 2.29.2 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-mips@vger.kernel.org From: Arnd Bergmann Christoph Hellwig and a few others spent a huge effort on removing set_fs() from most of the important architectures, but about half the other architectures were never completed even though most of them don't actually use set_fs() at all. I did a patch for microblaze at some point, which turned out to be fairly generic, and now ported it to most other architectures, using new generic implementations of access_ok() and __{get,put}_kernel_nocheck(). Three architectures (sparc64, ia64, and sh) needed some extra work, which I also completed. The final series contains extra cleanup changes that touch all architectures. Please review and test these, so we can merge them for v5.18. The series is available at https://git.kernel.org/pub/scm/linux/kernel/git/arnd/playground.git/log/?h=set_fs for testing. Arnd Arnd Bergmann (14): uaccess: fix integer overflow on access_ok() sparc64: add __{get,put}_kernel_nocheck() nds32: fix access_ok() checks in get/put_user x86: use more conventional access_ok() definition uaccess: add generic __{get,put}_kernel_nofault mips: use simpler access_ok() uaccess: generalize access_ok() arm64: simplify access_ok() m68k: drop custom __access_ok() uaccess: remove most CONFIG_SET_FS users sparc64: remove CONFIG_SET_FS support sh: remove CONFIG_SET_FS support ia64: remove CONFIG_SET_FS support uaccess: drop set_fs leftovers arch/Kconfig | 3 - arch/alpha/Kconfig | 1 - arch/alpha/include/asm/processor.h | 4 - arch/alpha/include/asm/thread_info.h | 2 - arch/alpha/include/asm/uaccess.h | 53 +-------- arch/arc/Kconfig | 1 - arch/arc/include/asm/segment.h | 20 ---- arch/arc/include/asm/thread_info.h | 3 - arch/arc/include/asm/uaccess.h | 30 ----- arch/arm/include/asm/uaccess.h | 22 +--- arch/arm/kernel/swp_emulate.c | 2 +- arch/arm/kernel/traps.c | 2 +- arch/arm/lib/uaccess_with_memcpy.c | 10 -- arch/arm64/include/asm/uaccess.h | 29 +---- arch/csky/Kconfig | 1 - arch/csky/include/asm/processor.h | 2 - arch/csky/include/asm/segment.h | 10 -- arch/csky/include/asm/thread_info.h | 2 - arch/csky/include/asm/uaccess.h | 12 -- arch/csky/kernel/asm-offsets.c | 1 - arch/csky/kernel/signal.c | 2 +- arch/h8300/Kconfig | 1 - arch/h8300/include/asm/processor.h | 1 - arch/h8300/include/asm/segment.h | 40 ------- arch/h8300/include/asm/thread_info.h | 3 - arch/h8300/kernel/entry.S | 1 - arch/h8300/kernel/head_ram.S | 1 - arch/h8300/mm/init.c | 6 - arch/h8300/mm/memory.c | 1 - arch/hexagon/Kconfig | 1 - arch/hexagon/include/asm/thread_info.h | 6 - arch/hexagon/include/asm/uaccess.h | 25 ---- arch/hexagon/kernel/process.c | 1 - arch/ia64/Kconfig | 1 - arch/ia64/include/asm/processor.h | 4 - arch/ia64/include/asm/thread_info.h | 2 - arch/ia64/include/asm/uaccess.h | 26 ++--- arch/ia64/kernel/unaligned.c | 60 ++++++---- arch/m68k/include/asm/uaccess.h | 14 +-- arch/microblaze/Kconfig | 1 - arch/microblaze/include/asm/thread_info.h | 6 - arch/microblaze/include/asm/uaccess.h | 43 +------ arch/microblaze/kernel/asm-offsets.c | 1 - arch/microblaze/kernel/process.c | 1 - arch/mips/include/asm/uaccess.h | 47 +------- arch/nds32/Kconfig | 1 - arch/nds32/include/asm/thread_info.h | 4 - arch/nds32/include/asm/uaccess.h | 40 +++---- arch/nds32/kernel/process.c | 5 +- arch/nds32/mm/alignment.c | 3 - arch/nios2/Kconfig | 1 - arch/nios2/include/asm/thread_info.h | 9 -- arch/nios2/include/asm/uaccess.h | 23 +--- arch/nios2/kernel/signal.c | 20 ++-- arch/openrisc/Kconfig | 1 - arch/openrisc/include/asm/thread_info.h | 7 -- arch/openrisc/include/asm/uaccess.h | 42 +------ arch/parisc/include/asm/futex.h | 2 +- arch/parisc/include/asm/uaccess.h | 11 +- arch/parisc/lib/memcpy.c | 2 +- arch/powerpc/include/asm/uaccess.h | 13 +-- arch/powerpc/lib/sstep.c | 4 +- arch/riscv/include/asm/uaccess.h | 33 +----- arch/riscv/kernel/perf_callchain.c | 2 +- arch/s390/include/asm/uaccess.h | 13 +-- arch/sh/Kconfig | 1 - arch/sh/include/asm/processor.h | 1 - arch/sh/include/asm/segment.h | 33 ------ arch/sh/include/asm/thread_info.h | 2 - arch/sh/include/asm/uaccess.h | 24 +--- arch/sh/kernel/io_trapped.c | 9 +- arch/sh/kernel/process_32.c | 2 - arch/sh/kernel/traps_32.c | 30 +++-- arch/sparc/Kconfig | 1 - arch/sparc/include/asm/processor_32.h | 6 - arch/sparc/include/asm/processor_64.h | 4 - arch/sparc/include/asm/switch_to_64.h | 4 +- arch/sparc/include/asm/thread_info_64.h | 4 +- arch/sparc/include/asm/uaccess.h | 3 - arch/sparc/include/asm/uaccess_32.h | 31 +---- arch/sparc/include/asm/uaccess_64.h | 135 +++++++++++++--------- arch/sparc/kernel/process_32.c | 2 - arch/sparc/kernel/process_64.c | 12 -- arch/sparc/kernel/signal_32.c | 2 +- arch/sparc/kernel/traps_64.c | 2 - arch/sparc/lib/NGmemcpy.S | 3 +- arch/sparc/mm/init_64.c | 3 - arch/um/include/asm/uaccess.h | 7 +- arch/x86/include/asm/uaccess.h | 44 ++----- arch/xtensa/Kconfig | 1 - arch/xtensa/include/asm/asm-uaccess.h | 71 ------------ arch/xtensa/include/asm/processor.h | 7 -- arch/xtensa/include/asm/thread_info.h | 3 - arch/xtensa/include/asm/uaccess.h | 26 +---- arch/xtensa/kernel/asm-offsets.c | 3 - drivers/hid/uhid.c | 2 +- drivers/scsi/sg.c | 5 - fs/exec.c | 6 - include/asm-generic/access_ok.h | 51 ++++++++ include/asm-generic/uaccess.h | 46 +------- include/linux/syscalls.h | 4 - include/linux/uaccess.h | 59 +++------- include/rdma/ib.h | 2 +- kernel/events/callchain.c | 4 - kernel/events/core.c | 3 - kernel/exit.c | 14 --- kernel/kthread.c | 5 - kernel/stacktrace.c | 3 - kernel/trace/bpf_trace.c | 4 - mm/maccess.c | 119 ------------------- mm/memory.c | 8 -- net/bpfilter/bpfilter_kern.c | 2 +- 112 files changed, 315 insertions(+), 1239 deletions(-) delete mode 100644 arch/arc/include/asm/segment.h delete mode 100644 arch/csky/include/asm/segment.h delete mode 100644 arch/h8300/include/asm/segment.h delete mode 100644 arch/sh/include/asm/segment.h create mode 100644 include/asm-generic/access_ok.h