From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <SRS0=kYop=UV=vger.kernel.org=linux-kernel-owner@kernel.org>
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=-3.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS,
	INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS
	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 BDAE8C43613
	for <linux-kernel@archiver.kernel.org>; Sat, 22 Jun 2019 03:52:16 +0000 (UTC)
Received: from vger.kernel.org (vger.kernel.org [209.132.180.67])
	by mail.kernel.org (Postfix) with ESMTP id 996A4208CA
	for <linux-kernel@archiver.kernel.org>; Sat, 22 Jun 2019 03:52:16 +0000 (UTC)
Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand
        id S1726100AbfFVDtz (ORCPT
        <rfc822;linux-kernel@archiver.kernel.org>);
        Fri, 21 Jun 2019 23:49:55 -0400
Received: from smtprelay0034.hostedemail.com ([216.40.44.34]:58503 "EHLO
        smtprelay.hostedemail.com" rhost-flags-OK-OK-OK-FAIL)
        by vger.kernel.org with ESMTP id S1726049AbfFVDty (ORCPT
        <rfc822;linux-kernel@vger.kernel.org>);
        Fri, 21 Jun 2019 23:49:54 -0400
Received: from filter.hostedemail.com (clb03-v110.bra.tucows.net [216.40.38.60])
        by smtprelay04.hostedemail.com (Postfix) with ESMTP id 48FC3180A814D;
        Sat, 22 Jun 2019 03:49:53 +0000 (UTC)
X-Session-Marker: 6A6F6540706572636865732E636F6D
X-HE-Tag: screw48_3903c87882536
X-Filterd-Recvd-Size: 1770
Received: from XPS-9350 (cpe-23-242-70-174.socal.res.rr.com [23.242.70.174])
        (Authenticated sender: joe@perches.com)
        by omf03.hostedemail.com (Postfix) with ESMTPA;
        Sat, 22 Jun 2019 03:49:51 +0000 (UTC)
Message-ID: <fca1233b4a88beb603ba453c84bbd735e5adb07a.camel@perches.com>
Subject: Re: [PATCH 7/7] powerpc/kprobes: Allow probing on any ftrace address
From:   Joe Perches <joe@perches.com>
To:     Masami Hiramatsu <mhiramat@kernel.org>,
        "Naveen N. Rao" <naveen.n.rao@linux.vnet.ibm.com>
Cc:     Michael Ellerman <mpe@ellerman.id.au>,
        Steven Rostedt <rostedt@goodmis.org>,
        Ingo Molnar <mingo@kernel.org>,
        Nicholas Piggin <npiggin@gmail.com>,
        linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org
Date:   Fri, 21 Jun 2019 20:49:50 -0700
In-Reply-To: <20190621235034.acc00fc3e2b2c7e89caa1fd5@kernel.org>
References: <cover.1560868106.git.naveen.n.rao@linux.vnet.ibm.com>
         <d26f5467577ff0aeecea55e7035ea64e303bdf17.1560868106.git.naveen.n.rao@linux.vnet.ibm.com>
         <20190621235034.acc00fc3e2b2c7e89caa1fd5@kernel.org>
Content-Type: text/plain; charset="ISO-8859-1"
User-Agent: Evolution 3.30.5-0ubuntu0.18.10.1 
MIME-Version: 1.0
Content-Transfer-Encoding: 7bit
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk
List-ID: <linux-kernel.vger.kernel.org>
X-Mailing-List: linux-kernel@vger.kernel.org

On Fri, 2019-06-21 at 23:50 +0900, Masami Hiramatsu wrote:
> On Tue, 18 Jun 2019 20:17:06 +0530
> "Naveen N. Rao" <naveen.n.rao@linux.vnet.ibm.com> wrote:

trivia:

> > diff --git a/arch/powerpc/kernel/kprobes-ftrace.c b/arch/powerpc/kernel/kprobes-ftrace.c
[]
> > @@ -57,6 +82,11 @@ NOKPROBE_SYMBOL(kprobe_ftrace_handler);
> >  
> >  int arch_prepare_kprobe_ftrace(struct kprobe *p)
> >  {
> > +	if ((unsigned long)p->addr & 0x03) {
> > +		printk("Attempt to register kprobe at an unaligned address\n");

Please use the appropriate KERN_<LEVEL> or pr_<level>