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=-10.0 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT 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 F0292ECDE4C for ; Thu, 8 Nov 2018 21:56:09 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id B319021019 for ; Thu, 8 Nov 2018 21:56:09 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=kernel.org header.i=@kernel.org header.b="VXFBCarS" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org B319021019 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=linuxfoundation.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728911AbeKIHde (ORCPT ); Fri, 9 Nov 2018 02:33:34 -0500 Received: from mail.kernel.org ([198.145.29.99]:49178 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727979AbeKIHdd (ORCPT ); Fri, 9 Nov 2018 02:33:33 -0500 Received: from localhost (unknown [208.72.13.198]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 108042089A; Thu, 8 Nov 2018 21:56:06 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1541714166; bh=4StZPuTY25sjeQD2fl+WcDz6NEvez69q1QpyRDD+KW4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=VXFBCarSU9C0yXMbSBlohWMEIUMQI5t/Xrn/k6B75QWYEgX1BwCQOpJTUtZMG/Tlv f174F+oexfJLv8oMPZbvlWJE9qnq/OVF0O/8eHgJiMug2A411wi/oQI9zynIKlDnm/ C5fV5Qx96WTHxI9A63CyWI3QXh5HaqucHA5Pnd40= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Namhyung Kim , David Ahern , Ingo Molnar , Jiri Olsa , Masami Hiramatsu , Peter Zijlstra , Arnaldo Carvalho de Melo , Sasha Levin Subject: [PATCH 3.18 077/144] perf tools: Fix segfault for symbol annotation on TUI Date: Thu, 8 Nov 2018 13:50:48 -0800 Message-Id: <20181108215100.870202054@linuxfoundation.org> X-Mailer: git-send-email 2.19.1 In-Reply-To: <20181108215054.826084593@linuxfoundation.org> References: <20181108215054.826084593@linuxfoundation.org> User-Agent: quilt/0.65 X-stable: review MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 3.18-stable review patch. If anyone has any objections, please let me know. ------------------ [ Upstream commit 813ccd15452ed34e97aa526ffc70d6d8e6c466c5 ] Currently the symbol structure is allocated with symbol_conf.priv_size to carry sideband information like annotation, map browser on TUI and sort-by-name tree node. So retrieving these information from symbol needs to care about the details of such placement. However the annotation code just assumes that the symbol is placed after the struct annotation. But actually there's other info between them. So accessing those struct will lead to an undefined behavior (usually a crash) after they write their info to the same location. To reproduce the problem, please follow the steps below: 1. run perf report (TUI of course) with -v option 2. open map browser (by pressing right arrow key for any entry) 3. search any function (by pressing '/' key and input whatever..) 4. return to the hist browser (by pressing 'q' or left arrow key) 5. open annotation window for the same entry (by pressing 'a' key) Signed-off-by: Namhyung Kim Cc: David Ahern Cc: Ingo Molnar Cc: Jiri Olsa Cc: Masami Hiramatsu Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/1421234288-22758-1-git-send-email-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo Signed-off-by: Sasha Levin --- tools/perf/util/annotate.h | 8 +------- 1 file changed, 1 insertion(+), 7 deletions(-) diff --git a/tools/perf/util/annotate.h b/tools/perf/util/annotate.h index 112d6e268150..dfa6c4c36b3e 100644 --- a/tools/perf/util/annotate.h +++ b/tools/perf/util/annotate.h @@ -115,11 +115,6 @@ struct annotation { struct annotated_source *src; }; -struct sannotation { - struct annotation annotation; - struct symbol symbol; -}; - static inline struct sym_hist *annotation__histogram(struct annotation *notes, int idx) { return (((void *)¬es->src->histograms) + @@ -128,8 +123,7 @@ static inline struct sym_hist *annotation__histogram(struct annotation *notes, i static inline struct annotation *symbol__annotation(struct symbol *sym) { - struct sannotation *a = container_of(sym, struct sannotation, symbol); - return &a->annotation; + return (void *)sym - symbol_conf.priv_size; } int addr_map_symbol__inc_samples(struct addr_map_symbol *ams, int evidx); -- 2.17.1