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=-10.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,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 423A7C76186 for ; Tue, 23 Jul 2019 20:06:06 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 16CB3229EB for ; Tue, 23 Jul 2019 20:06:06 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1563912366; bh=uiyb9SpszJ9UNaXRZ5p1Odgp4bBrWvQnD28YHueCz40=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=WkoPMJzmo12avTJ0CY3cD3yO1N+WDb7QX8w364u23rfqE9qcfGdFOzc9b3bTc+YRZ VYXkyo0Y2qgJCLkOqJlroIGH5c1D3+q/FT4dDVGrNdsJ7Fk9tW9RmTK/hIg4O9NZyg izrenq1Rp2emUYH0Hu6j0QUwnpDkx6bgyS0AgyPw= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2387781AbfGWUGF (ORCPT ); Tue, 23 Jul 2019 16:06:05 -0400 Received: from mail.kernel.org ([198.145.29.99]:50222 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726695AbfGWUGD (ORCPT ); Tue, 23 Jul 2019 16:06:03 -0400 Received: from quaco.ghostprotocols.net (unknown [179.182.218.90]) (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 4CB4B229F3; Tue, 23 Jul 2019 20:05:57 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1563912362; bh=uiyb9SpszJ9UNaXRZ5p1Odgp4bBrWvQnD28YHueCz40=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=1LwdP7gmdy81JaZy0l0G+P1/Ej21FtHvaaeb/+1INap4c90T3SUKXeW/tvNYQmUW1 aU45/f/E1104UcNADUHyRwiSQvUUsuDg8w39duVAz6ZhFLCUd2I8lc8p0S1CHQwELN 8qbgA+/VCUoEOBVh016cptFCzSKTvYeImDLR0IAI= From: Arnaldo Carvalho de Melo To: Ingo Molnar , Thomas Gleixner Cc: Jiri Olsa , Namhyung Kim , Clark Williams , linux-kernel@vger.kernel.org, linux-perf-users@vger.kernel.org, Arnaldo Carvalho de Melo , Alexander Shishkin , David Carrillo-Cisneros , Kan Liang , Peter Zijlstra , Song Liu Subject: [PATCH 04/10] perf tools: Fix proper buffer size for feature processing Date: Tue, 23 Jul 2019 17:05:24 -0300 Message-Id: <20190723200530.14090-5-acme@kernel.org> X-Mailer: git-send-email 2.21.0 In-Reply-To: <20190723200530.14090-1-acme@kernel.org> References: <20190723200530.14090-1-acme@kernel.org> 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 From: Jiri Olsa After Song Liu's segfault fix for pipe mode, Arnaldo reported following error: # perf record -o - | perf script 0x514 [0x1ac]: failed to process type: 80 It's caused by wrong buffer size setup in feature processing, which makes cpu topology feature fail, because it's using buffer size to recognize its header version. Reported-by: Arnaldo Carvalho de Melo Signed-off-by: Jiri Olsa Tested-by: Arnaldo Carvalho de Melo Cc: Alexander Shishkin Cc: David Carrillo-Cisneros Cc: Kan Liang Cc: Namhyung Kim Cc: Peter Zijlstra Cc: Song Liu Fixes: e9def1b2e74e ("perf tools: Add feature header record to pipe-mode") Link: http://lkml.kernel.org/r/20190715140426.32509-1-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/header.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tools/perf/util/header.c b/tools/perf/util/header.c index c24db7f4909c..20111f8da5cb 100644 --- a/tools/perf/util/header.c +++ b/tools/perf/util/header.c @@ -3747,7 +3747,7 @@ int perf_event__process_feature(struct perf_session *session, return 0; ff.buf = (void *)fe->data; - ff.size = event->header.size - sizeof(event->header); + ff.size = event->header.size - sizeof(*fe); ff.ph = &session->header; if (feat_ops[feat].process(&ff, NULL)) -- 2.21.0