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=-6.0 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_PASS, URIBL_BLOCKED,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 683DFC43381 for ; Tue, 26 Mar 2019 06:41:54 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 3A1B22086C for ; Tue, 26 Mar 2019 06:41:54 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1553582514; bh=A9wT6JlLYV8gsz20AMaNO++cGHOBZZqejLSuzV1VTBE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=oQOSEzuGR9dsMaDQ1dHGjuWoX0XN3Mvci4DTMNEpKwddGyTZu6w/tIQntVF6IUJ1/ jMEpVbPmiyHHz4pgWZBEvXvIF01SQZVdPj9F8TU3IwD6Xia2jsqzZvJpvd8ZSC0S/d yo200nnca3/SiBd6lCRcdJ2rtY1bQdXvIlG2L6Bk= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1732522AbfCZGkI (ORCPT ); Tue, 26 Mar 2019 02:40:08 -0400 Received: from mail.kernel.org ([198.145.29.99]:55990 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1732782AbfCZGkD (ORCPT ); Tue, 26 Mar 2019 02:40:03 -0400 Received: from localhost (unknown [104.132.152.111]) (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 0F92E20863; Tue, 26 Mar 2019 06:40:02 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1553582402; bh=A9wT6JlLYV8gsz20AMaNO++cGHOBZZqejLSuzV1VTBE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=q5IVjlej9yRZUDvg6UwqGE4splF2L1X4SCa0l9X3oa1c4H/IE39kksD90ftuCLW58 Zf3KPnuRp1yFwOj0aBKVwQxXbWlVwJtv3K+oUZmOxb/cZyrkIDHxelMGS6E+BNI1Mi luipfcDXZ1sBRKV6rrX3csqrTf5UrW2ndXtTBqBU= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Adrian Hunter , Joseph Qi , Masami Hiramatsu , Alexander Shishkin , Andy Lutomirski , Jiufei Xue , Peter Zijlstra , Xu Yu , Arnaldo Carvalho de Melo Subject: [PATCH 5.0 26/52] perf probe: Fix getting the kernel map Date: Tue, 26 Mar 2019 15:30:13 +0900 Message-Id: <20190326042702.242199777@linuxfoundation.org> X-Mailer: git-send-email 2.21.0 In-Reply-To: <20190326042700.963224437@linuxfoundation.org> References: <20190326042700.963224437@linuxfoundation.org> User-Agent: quilt/0.65 X-stable: review X-Patchwork-Hint: ignore 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 5.0-stable review patch. If anyone has any objections, please let me know. ------------------ From: Adrian Hunter commit eaeffeb9838a7c0dec981d258666bfcc0fa6a947 upstream. Since commit 4d99e4136580 ("perf machine: Workaround missing maps for x86 PTI entry trampolines"), perf tools has been creating more than one kernel map, however 'perf probe' assumed there could be only one. Fix by using machine__kernel_map() to get the main kernel map. Signed-off-by: Adrian Hunter Tested-by: Joseph Qi Acked-by: Masami Hiramatsu Cc: Alexander Shishkin Cc: Andy Lutomirski Cc: Greg Kroah-Hartman Cc: Jiufei Xue Cc: Peter Zijlstra Cc: stable@vger.kernel.org Cc: Xu Yu Fixes: 4d99e4136580 ("perf machine: Workaround missing maps for x86 PTI entry trampolines") Fixes: d83212d5dd67 ("kallsyms, x86: Export addresses of PTI entry trampolines") Link: http://lkml.kernel.org/r/2ed432de-e904-85d2-5c36-5897ddc5b23b@intel.com Signed-off-by: Arnaldo Carvalho de Melo Signed-off-by: Greg Kroah-Hartman --- tools/perf/util/probe-event.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) --- a/tools/perf/util/probe-event.c +++ b/tools/perf/util/probe-event.c @@ -157,8 +157,10 @@ static struct map *kernel_get_module_map if (module && strchr(module, '/')) return dso__new_map(module); - if (!module) - module = "kernel"; + if (!module) { + pos = machine__kernel_map(host_machine); + return map__get(pos); + } for (pos = maps__first(maps); pos; pos = map__next(pos)) { /* short_name is "[module]" */