From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Cyrus-Session-Id: sloti22d1t05-3619796-1525407300-3-236362532932342014 X-Sieve: CMU Sieve 3.0 X-Spam-known-sender: no X-Spam-score: 0.0 X-Spam-hits: BAYES_00 -1.9, MAILING_LIST_MULTI -1, RCVD_IN_DNSWL_HI -5, LANGUAGES en, BAYES_USED global, SA_VERSION 3.4.0 X-Spam-source: IP='209.132.180.67', Host='vger.kernel.org', Country='US', FromHeader='org', MailFrom='org' X-Spam-charsets: plain='utf-8' X-Resolved-to: greg@kroah.com X-Delivered-to: greg@kroah.com X-Mail-from: stable-owner@vger.kernel.org ARC-Seal: i=1; a=rsa-sha256; cv=none; d=messagingengine.com; s=fm2; t= 1525407300; b=ZJuIwbWSR0CQjDHZE1GGhvCcYU/e4S+xpX7fwFAgF7s028OIQA fsvpqD1s99fKHHKgB+y7qXq/7R1NeFlIJd7u2c4l38wHBRhEQ57f/J8l05SOVita 4E9UYd+MWzk6iP9GHJW5cqaG8C4odP6eCIwR1+7v19kHbkI0tSFHxCW9bJUy0J/8 Bk70E1RW3ohxnE8tLtkkwTeVUq3oUkDz/PWxnXTiPJABlWZ2RaU6qsdLW1ey/D3j hu4mKD83KRqNReHHfzGOSc9lVOY8UmFLfS+z5qyMd6nALo3F2ey5pyZXKQU628Kn 8kL9jGq5yAOws+HzOlFxXTllLF2V8BnlzjRg== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=from:to:cc:subject:date:message-id :mime-version:content-type:content-transfer-encoding:sender :list-id; s=fm2; t=1525407300; bh=JM8orJ32XmuvAuS0B2KEWhCuKSjiZL 53P9lbgcC0wXE=; b=gOpWynrdo+yg+63pm0lEu7dKNHlBRwsWUZDSyhLyBO20r7 pGobtyu4Zp6lJSKxOLhwA/5cr22S2Di4ew68B/0Z1VfodduonOY0ehkinHfJwbUP loxG7rzdDwvICl6HLEbql67miu2OvHxiNwvNObei7jWezK3NPxPjloSqmJYNpXEh NsXs6prOJEc9P4B1cYkmIjAEzORlJQw2fWRd+BzbfWC3KmzHP2hqimglwDMP/Msf ldqIOhiugGUqQkZWaz+qYpjOVptVDDyFqbfIAKsFRS952pwsnSm56hKyOWyBLQGr 6wjEs5gSLzGo/Qjgw3t2K9+BCDIaQRRkWX/pVrww== ARC-Authentication-Results: i=1; mx2.messagingengine.com; arc=none (no signatures found); dkim=pass (1024-bit rsa key sha256) header.d=kernel.org header.i=@kernel.org header.b=VLLiWuP3 x-bits=1024 x-keytype=rsa x-algorithm=sha256 x-selector=default; dmarc=pass (p=none,has-list-id=yes,d=none) header.from=kernel.org; iprev=pass policy.iprev=209.132.180.67 (vger.kernel.org); spf=none smtp.mailfrom=stable-owner@vger.kernel.org smtp.helo=vger.kernel.org; x-aligned-from=orgdomain_pass (Domain org match); x-cm=none score=0; x-ptr=pass x-ptr-helo=vger.kernel.org x-ptr-lookup=vger.kernel.org; x-return-mx=pass smtp.domain=vger.kernel.org smtp.result=pass smtp_org.domain=kernel.org smtp_org.result=pass smtp_is_org_domain=no header.domain=kernel.org header.result=pass header_is_org_domain=yes; x-vs=clean score=-100 state=0 Authentication-Results: mx2.messagingengine.com; arc=none (no signatures found); dkim=pass (1024-bit rsa key sha256) header.d=kernel.org header.i=@kernel.org header.b=VLLiWuP3 x-bits=1024 x-keytype=rsa x-algorithm=sha256 x-selector=default; dmarc=pass (p=none,has-list-id=yes,d=none) header.from=kernel.org; iprev=pass policy.iprev=209.132.180.67 (vger.kernel.org); spf=none smtp.mailfrom=stable-owner@vger.kernel.org smtp.helo=vger.kernel.org; x-aligned-from=orgdomain_pass (Domain org match); x-cm=none score=0; x-ptr=pass x-ptr-helo=vger.kernel.org x-ptr-lookup=vger.kernel.org; x-return-mx=pass smtp.domain=vger.kernel.org smtp.result=pass smtp_org.domain=kernel.org smtp_org.result=pass smtp_is_org_domain=no header.domain=kernel.org header.result=pass header_is_org_domain=yes; x-vs=clean score=-100 state=0 X-ME-VSCategory: clean X-CM-Envelope: MS4wfK7eA0aYLkoa28BQZIFgMRNpkbEi6Y2QHtU5AY2Qsw3yIcpN8JBcvXv54bPuTuYGHYb0nG4w1KLmrbrhmPfURmSXkRVC0OxG4b6XUn/s3Nyvv3DNqOZn u6aH7j+dBPuvxIY5j/vY5s0oc8cyBGDRNr3cdNK1S2w9iC+oZPJ5g9qPjeSqAMz1rqWoM+IQnXNd0tb4o+9rTsci5wW4ZeSHJjuEQnV66lY3ybI7YorRP/3L X-CM-Analysis: v=2.3 cv=E8HjW5Vl c=1 sm=1 tr=0 a=UK1r566ZdBxH71SXbqIOeA==:117 a=UK1r566ZdBxH71SXbqIOeA==:17 a=IkcTkHD0fZMA:10 a=VUJBJC2UJ8kA:10 a=VwQbUJbxAAAA:8 a=b97_WyIe7AKiTRb-nbkA:9 a=QEXdDO2ut3YA:10 a=AjGcO6oz07-iQ99wixmX:22 X-ME-CMScore: 0 X-ME-CMCategory: none Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1750753AbeEDEO4 (ORCPT ); Fri, 4 May 2018 00:14:56 -0400 Received: from mail.kernel.org ([198.145.29.99]:42246 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750707AbeEDEO4 (ORCPT ); Fri, 4 May 2018 00:14:56 -0400 From: Masami Hiramatsu To: Russell King Cc: Wang Nan , Will Deacon , Jon Medhurst , linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, mhiramat@kernel.org, David Long , stable@vger.kernel.org Subject: [BUGFIX PATCH v3 0/4] arm: kprobes: Fix to prohibit probing on unsafe functions Date: Fri, 4 May 2018 13:14:31 +0900 Message-Id: <152540727123.29650.13679359124038587629.stgit@devbox> X-Mailer: git-send-email 2.13.6 User-Agent: StGit/0.17.1-dirty MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Sender: stable-owner@vger.kernel.org X-Mailing-List: stable@vger.kernel.org X-getmail-retrieved-from-mailbox: INBOX X-Mailing-List: linux-kernel@vger.kernel.org List-ID: Hi, This is the 3rd version of bugfix series for kprobes on arm. This series fixes 4 different issues which I found. - Fix to use smp_processor_id() after disabling preemption. - Prohibit probing on optimized_callback() for avoiding recursive probe. - Prohibit kprobes on do_undefinstr() by same reason. - Prohibit kprobes on get_user() by same reason. >>From v2, I included another 2 bugfixes (1/4 and 2/4) which are not merged yet, and added "Cc: stable@vger.kernel.org", since there are obvious bugs. Thanks, --- Masami Hiramatsu (4): arm: kprobes: Fix to use get_kprobe_ctlblk after irq-disabed arm: kprobes: Prohibit probing on optimized_callback arm: kprobes: Prohibit kprobes on do_undefinstr arm: kprobes: Prohibit kprobes on get_user functions arch/arm/include/asm/assembler.h | 10 ++++++++++ arch/arm/kernel/traps.c | 5 ++++- arch/arm/lib/getuser.S | 10 ++++++++++ arch/arm/probes/kprobes/opt-arm.c | 4 +++- 4 files changed, 27 insertions(+), 2 deletions(-) -- Masami Hiramatsu (Linaro)