From patchwork Fri Oct 30 15:45:10 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Arnd Bergmann X-Patchwork-Id: 11870135 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 3B78A139F for ; Fri, 30 Oct 2020 15:45:52 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id B57832224A for ; Fri, 30 Oct 2020 15:45:51 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=kernel.org header.i=@kernel.org header.b="TmRaUqar" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org B57832224A Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id D48AF6B005D; Fri, 30 Oct 2020 11:45:50 -0400 (EDT) Delivered-To: linux-mm-outgoing@kvack.org Received: by kanga.kvack.org (Postfix, from userid 40) id CF9A76B006E; Fri, 30 Oct 2020 11:45:50 -0400 (EDT) X-Original-To: int-list-linux-mm@kvack.org X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id BBEEB6B0070; Fri, 30 Oct 2020 11:45:50 -0400 (EDT) X-Original-To: linux-mm@kvack.org X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0126.hostedemail.com [216.40.44.126]) by kanga.kvack.org (Postfix) with ESMTP id 8E4016B005D for ; Fri, 30 Oct 2020 11:45:50 -0400 (EDT) Received: from smtpin17.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay03.hostedemail.com (Postfix) with ESMTP id 2C116824999B for ; Fri, 30 Oct 2020 15:45:50 +0000 (UTC) X-FDA: 77429017260.17.hand19_0b0eef627297 Received: from filter.hostedemail.com (10.5.16.251.rfc1918.com [10.5.16.251]) by smtpin17.hostedemail.com (Postfix) with ESMTP id 0EEC6180D0181 for ; Fri, 30 Oct 2020 15:45:50 +0000 (UTC) X-Spam-Summary: 1,0,0,65a777262420b717,d41d8cd98f00b204,arnd@kernel.org,,RULES_HIT:41:69:355:379:541:800:960:967:968:973:988:989:1260:1311:1314:1345:1431:1437:1515:1534:1542:1711:1730:1747:1777:1792:1801:2393:2525:2559:2563:2682:2685:2859:2933:2937:2939:2942:2945:2947:2951:2954:3022:3138:3139:3140:3141:3142:3353:3865:3866:3867:3868:3870:3871:3873:3934:3936:3938:3941:3944:3947:3950:3953:3956:3959:4250:4605:5007:6119:6261:6653:7576:7903:8985:9025:10004:11026:11473:11657:11658:11914:12043:12296:12297:12517:12519:12679:12895:13846:13894:14096:14180:14181:14394:14721:21060:21080:21212:21220:21451:21627:21740:21795:30051:30054:30079,0,RBL:198.145.29.99:@kernel.org:.lbl8.mailshell.net-62.2.0.100 64.100.201.201;04ygfpuqkdi9tehbq8dx7attba1hyop45ysx677w7jw3o7e6oo8simbtctyntkk.93rp6am5be9rbbznnfud8axr6txm8p7xc65eexe3ecm5aetjuawr5muo1iad6zq.s-lbl8.mailshell.net-223.238.255.100,CacheIP:none,Bayesian:0.5,0.5,0.5,Netcheck:none,DomainCache:0,MSF:not bulk,SPF:fp,MSBL:0,DNSBL:neutral,Custom_ru les:0:0: X-HE-Tag: hand19_0b0eef627297 X-Filterd-Recvd-Size: 4064 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by imf28.hostedemail.com (Postfix) with ESMTP for ; Fri, 30 Oct 2020 15:45:49 +0000 (UTC) Received: from localhost.localdomain (HSI-KBW-46-223-126-90.hsi.kabel-badenwuerttemberg.de [46.223.126.90]) (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 96B6620936; Fri, 30 Oct 2020 15:45:46 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1604072748; bh=nlOMXqka12e9yQIr/OhzGs4UNVMEOM0e+JUVN3RvNMk=; h=From:To:Cc:Subject:Date:From; b=TmRaUqarMiry5LSRwQ7CF1t9t2MeNM7kh8bk2DkIF7CQhWDT3xwEZAzbRrgeKFDnk Td2bCdvpBwwWoLmoa1EH3+nDChqbPqnxXUVD2CPpWk7dLaeaU32XXKn/cJOTz+PiM4 7dj65fb+6Wrfaq4SWmJ0NQh2SIKHXTtrhIyMmYK0= From: Arnd Bergmann To: Russell King , Christoph Hellwig Cc: Arnd Bergmann , linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-arch@vger.kernel.org, linux-mm@kvack.org, Alexander Viro , Linus Walleij Subject: [PATCH v4 0/9] ARM: remove set_fs callers and implementation Date: Fri, 30 Oct 2020 16:45:10 +0100 Message-Id: <20201030154519.1245983-1-arnd@kernel.org> X-Mailer: git-send-email 2.27.0 MIME-Version: 1.0 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: From: Arnd Bergmann Hi Christoph, Russell, This is the rebased version of my ARM set_fs patches on top of v5.10-rc1, dropping the TASK_SIZE_MAX patch but leaving everything else unchanged. I have tested the oabi-compat changes using the LTP tests for the three modified syscalls using an Armv7 kernel and a Debian 5 OABI user space. I also tested the syscall_get_nr() in all combinations of OABI/EABI kernel user space and fixed the bugs I found after Russell pointed out one of those issues. Russell, you can pull these from https://git.kernel.org/pub/scm/linux/kernel/git/arnd/playground.git arm-setfs_v4 or I can add them to the ARM patch tracker if you prefer. Arnd Arnd Bergmann (9): mm/maccess: fix unaligned copy_{from,to}_kernel_nofault ARM: traps: use get_kernel_nofault instead of set_fs() ARM: oabi-compat: add epoll_pwait handler ARM: syscall: always store thread_info->syscall ARM: oabi-compat: rework epoll_wait/epoll_pwait emulation ARM: oabi-compat: rework sys_semtimedop emulation ARM: oabi-compat: rework fcntl64() emulation ARM: uaccess: add __{get,put}_kernel_nofault ARM: uaccess: remove set_fs() implementation arch/arm/Kconfig | 1 - arch/arm/include/asm/ptrace.h | 1 - arch/arm/include/asm/syscall.h | 16 ++- arch/arm/include/asm/thread_info.h | 4 - arch/arm/include/asm/uaccess-asm.h | 6 - arch/arm/include/asm/uaccess.h | 169 ++++++++++++++------------- arch/arm/kernel/asm-offsets.c | 3 +- arch/arm/kernel/entry-common.S | 17 +-- arch/arm/kernel/process.c | 7 +- arch/arm/kernel/ptrace.c | 9 +- arch/arm/kernel/signal.c | 8 -- arch/arm/kernel/sys_oabi-compat.c | 181 ++++++++++++++++------------- arch/arm/kernel/traps.c | 47 +++----- arch/arm/lib/copy_from_user.S | 3 +- arch/arm/lib/copy_to_user.S | 3 +- arch/arm/tools/syscall.tbl | 2 +- fs/eventpoll.c | 5 +- include/linux/eventpoll.h | 18 +++ include/linux/syscalls.h | 3 + ipc/sem.c | 84 ++++++++----- mm/maccess.c | 28 ++++- 21 files changed, 332 insertions(+), 283 deletions(-) Cc: linux-kernel@vger.kernel.org Cc: linux-arm-kernel@lists.infradead.org Cc: linux-arch@vger.kernel.org Cc: linux-mm@kvack.org Cc: Alexander Viro Cc: Linus Walleij Cc: Arnd Bergmann Tested-by: Linus Walleij