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=-9.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable 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 25559C2D0CE for ; Sun, 29 Dec 2019 18:05:27 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id F1EB0208C4 for ; Sun, 29 Dec 2019 18:05:26 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1577642727; bh=8PUwx2HjpsbnxcQYYBiZXa9T/rE5w9D0hPa3UvgDYF8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=foIC7wUHiONwTjbE0FORopuH8jNUnoEq0/S9noApH9pWva34HLrMw59DFCNpTqyCU cT+ZbMfTtsQ4tvT6TosUQj1cZlTcfjyaHmnlEe8jKGInjF+T7c06hhn06tDaBP3mlG yvsmhxWlPz3MXDHabvpWO+waeNpZ7DCjOPhQYcC0= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1732036AbfL2RvP (ORCPT ); Sun, 29 Dec 2019 12:51:15 -0500 Received: from mail.kernel.org ([198.145.29.99]:36370 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1732044AbfL2RvO (ORCPT ); Sun, 29 Dec 2019 12:51:14 -0500 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (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 40AA8207FD; Sun, 29 Dec 2019 17:51:13 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1577641873; bh=8PUwx2HjpsbnxcQYYBiZXa9T/rE5w9D0hPa3UvgDYF8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=oqKfn+dx4nsuVFmNNZG5qHrQT47AEvFkGiz/dPwebd2Bd6NGD3ZFPrqwwNGe8+a9Q Owoih8aB6demDOS77dQV3ykXl/aUlqN8YQOntQnHqRhaaDgo0aezlPBM+Pk9Pi40Cp Z+A9r6dgSn6qrJDAF19NkbVUX6Osvc/FxyqHo66w= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Masami Hiramatsu , Arnaldo Carvalho de Melo , Jiri Olsa , Namhyung Kim , Sasha Levin Subject: [PATCH 5.4 248/434] perf probe: Fix to probe an inline function which has no entry pc Date: Sun, 29 Dec 2019 18:25:01 +0100 Message-Id: <20191229172718.360610159@linuxfoundation.org> X-Mailer: git-send-email 2.24.1 In-Reply-To: <20191229172702.393141737@linuxfoundation.org> References: <20191229172702.393141737@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Masami Hiramatsu [ Upstream commit eb6933b29d20bf2c3053883d409a53f462c1a3ac ] Fix perf probe to probe an inlne function which has no entry pc or low pc but only has ranges attribute. This seems very rare case, but I could find a few examples, as same as probe_point_search_cb(), use die_entrypc() to get the entry address in probe_point_inline_cb() too. Without this patch: # perf probe -D __amd_put_nb_event_constraints Failed to get entry address of __amd_put_nb_event_constraints. Probe point '__amd_put_nb_event_constraints' not found. Error: Failed to add events. With this patch: # perf probe -D __amd_put_nb_event_constraints p:probe/__amd_put_nb_event_constraints amd_put_event_constraints+43 Committer testing: Before: [root@quaco ~]# perf probe -D __amd_put_nb_event_constraints Failed to get entry address of __amd_put_nb_event_constraints. Probe point '__amd_put_nb_event_constraints' not found. Error: Failed to add events. [root@quaco ~]# After: [root@quaco ~]# perf probe -D __amd_put_nb_event_constraints p:probe/__amd_put_nb_event_constraints _text+33789 [root@quaco ~]# Fixes: 4ea42b181434 ("perf: Add perf probe subcommand, a kprobe-event setup helper") Signed-off-by: Masami Hiramatsu Tested-by: Arnaldo Carvalho de Melo Cc: Jiri Olsa Cc: Namhyung Kim Link: http://lore.kernel.org/lkml/157199320336.8075.16189530425277588587.stgit@devnote2 Signed-off-by: Arnaldo Carvalho de Melo Signed-off-by: Sasha Levin --- tools/perf/util/probe-finder.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tools/perf/util/probe-finder.c b/tools/perf/util/probe-finder.c index 7c8d30fb2b99..7857ae7a10b7 100644 --- a/tools/perf/util/probe-finder.c +++ b/tools/perf/util/probe-finder.c @@ -942,7 +942,7 @@ static int probe_point_inline_cb(Dwarf_Die *in_die, void *data) ret = find_probe_point_lazy(in_die, pf); else { /* Get probe address */ - if (dwarf_entrypc(in_die, &addr) != 0) { + if (die_entrypc(in_die, &addr) != 0) { pr_warning("Failed to get entry address of %s.\n", dwarf_diename(in_die)); return -ENOENT; -- 2.20.1