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=-16.6 required=3.0 tests=DKIMWL_WL_MED,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_PASS,USER_AGENT_GIT,USER_IN_DEF_DKIM_WL autolearn=ham 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 EBEABC4360F for ; Fri, 22 Feb 2019 12:53:55 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id BA24520818 for ; Fri, 22 Feb 2019 12:53:55 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="N/CagzxO" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727361AbfBVMxy (ORCPT ); Fri, 22 Feb 2019 07:53:54 -0500 Received: from mail-wr1-f66.google.com ([209.85.221.66]:36459 "EHLO mail-wr1-f66.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726928AbfBVMxv (ORCPT ); Fri, 22 Feb 2019 07:53:51 -0500 Received: by mail-wr1-f66.google.com with SMTP id o17so2280309wrw.3 for ; Fri, 22 Feb 2019 04:53:49 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=mpZDvMXD49QdxJt8wpvUxUfka//FLmK5Q3bpesHxKPk=; b=N/CagzxODuKekdv/276f71hXtTpFv4KVsTM9wpsQCTigrrhdbo1a8DtexWnL0uLpkO 18omeTVoB8fzJ0j5vhRXb57XZU1dQgAzOHIdQfbKZw9pdxjklam5LDKdghq0pF7kUS4k TSktr+912xlWRX6ndEx5vBw3TcYrt2b8W0OjFZ0QWHqpApAu8Ul9v1iLffz1Em/x0Xya i4dGp/mgL49JMPe5c8rQczRqypr/Nip2+Eha9JF7UL97GTTb+ns7m5QrUYDBTdT9jbCq BDRsMTGNRmV1HHpb/DISeZc2DQhKRnEurBM5elN5TifJa0lXs64tIKkY6Q2oGNBe/Q7A j6NQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=mpZDvMXD49QdxJt8wpvUxUfka//FLmK5Q3bpesHxKPk=; b=tnFEsk1kPFLhzzXPAoUYeKPcOIIxMzzspsTT99G6XdAi+9meUXDwfCqnkQ2Gn0Mto+ hv31sqZpdjIOqKloqAGNjDBwlkd0TwxsDJ8YIiZnKpUdw2z7Ps5JJKD9NBjySV8agqme A/UhF1kEeQJ2HhTcXUt3jEMwcYE5eQMF+W0llCgcNC0iECGZf69nwHkuxduSlsKNpake EtNcatCxgvRPJ/etLET4FonPke7YHbHIeGkHXhn89pbgCGxZTUneeB23+yTyT0ZdAxu1 UcjlJ2qCoy/INsG9hF5G6HueKsFPPRDlTfz6DTtkyYGSGwtTMuRuaOEwq/lVVVsljj9X 9n3w== X-Gm-Message-State: AHQUAua3barQkAlx4m2No4FTUCq6/1DBH42vsVIF84XFl/PlOVL9THxH o7hnWvsF1BX8lEZwfFcGP+AcFQ== X-Google-Smtp-Source: AHgI3IavQme072cpLVKWYOoRpuCla4tOdeXjezjFtFrbJI9VPdNaXp7MfZlgZAflIs5r0SUzqIri2w== X-Received: by 2002:adf:fecd:: with SMTP id q13mr2883485wrs.3.1550840029193; Fri, 22 Feb 2019 04:53:49 -0800 (PST) Received: from andreyknvl0.muc.corp.google.com ([2a00:79e0:15:13:8ce:d7fa:9f4c:492]) by smtp.gmail.com with ESMTPSA id o14sm808209wrp.34.2019.02.22.04.53.47 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Fri, 22 Feb 2019 04:53:48 -0800 (PST) From: Andrey Konovalov To: Catalin Marinas , Will Deacon , Mark Rutland , Robin Murphy , Kees Cook , Kate Stewart , Greg Kroah-Hartman , Andrew Morton , Ingo Molnar , "Kirill A . Shutemov" , Shuah Khan , Vincenzo Frascino , linux-arm-kernel@lists.infradead.org, linux-doc@vger.kernel.org, linux-mm@kvack.org, linux-arch@vger.kernel.org, linux-kselftest@vger.kernel.org, linux-kernel@vger.kernel.org Cc: Dmitry Vyukov , Kostya Serebryany , Evgeniy Stepanov , Lee Smith , Ramana Radhakrishnan , Jacob Bramley , Ruben Ayrapetyan , Chintan Pandya , Luc Van Oostenryck , Dave Martin , Kevin Brodsky , Szabolcs Nagy , Andrey Konovalov Subject: [PATCH v10 10/12] tracing, arm64: untag user pointers in seq_print_user_ip Date: Fri, 22 Feb 2019 13:53:22 +0100 Message-Id: <99b59c349ed81d4b204353f54b89f930f01d6ee3.1550839937.git.andreyknvl@google.com> X-Mailer: git-send-email 2.21.0.rc0.258.g878e2cd30e-goog In-Reply-To: References: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org seq_print_user_ip() uses provided user pointers for vma lookups, which can only by done with untagged pointers. Untag user pointers in this function. Signed-off-by: Andrey Konovalov --- kernel/trace/trace_output.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/kernel/trace/trace_output.c b/kernel/trace/trace_output.c index 54373d93e251..7c893328f97b 100644 --- a/kernel/trace/trace_output.c +++ b/kernel/trace/trace_output.c @@ -379,7 +379,7 @@ static int seq_print_user_ip(struct trace_seq *s, struct mm_struct *mm, const struct vm_area_struct *vma; down_read(&mm->mmap_sem); - vma = find_vma(mm, ip); + vma = find_vma(mm, untagged_addr(ip)); if (vma) { file = vma->vm_file; vmstart = vma->vm_start; -- 2.21.0.rc0.258.g878e2cd30e-goog