From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <gdb-return-45130-listarch-gdb=sources.redhat.com@sourceware.org>
Received: (qmail 22321 invoked by alias); 1 Jun 2016 15:22:53 -0000
Mailing-List: contact gdb-help@sourceware.org; run by ezmlm
Precedence: bulk
List-Id: <gdb.sourceware.org>
List-Subscribe: <mailto:gdb-subscribe@sourceware.org>
List-Archive: <http://sourceware.org/ml/gdb/>
List-Post: <mailto:gdb@sourceware.org>
List-Help: <mailto:gdb-help@sourceware.org>, <http://sourceware.org/ml/#faqs>
Sender: gdb-owner@sourceware.org
Received: (qmail 22243 invoked by uid 89); 1 Jun 2016 15:22:52 -0000
Authentication-Results: sourceware.org; auth=none
X-Virus-Found: No
X-Spam-SWARE-Status: No, score=-1.0 required=5.0 tests=AWL,BAYES_00,SPF_HELO_PASS,SPF_SOFTFAIL autolearn=no version=3.3.2 spammy=ptrace
X-HELO: simark.ca
Received: from simark.ca (HELO simark.ca) (158.69.221.121) by sourceware.org (qpsmtpd/0.93/v0.84-503-g423c35a) with (AES256-GCM-SHA384 encrypted) ESMTPS; Wed, 01 Jun 2016 15:22:42 +0000
Received: by simark.ca (Postfix, from userid 112)	id DB7BC1E863; Wed,  1 Jun 2016 11:22:39 -0400 (EDT)
Received: from simark.ca (localhost [127.0.0.1])	by simark.ca (Postfix) with ESMTP id BEA0A1E14D;	Wed,  1 Jun 2016 11:22:38 -0400 (EDT)
MIME-Version: 1.0
Content-Type: text/plain; charset=US-ASCII; format=flowed
Content-Transfer-Encoding: 7bit
Date: Wed, 01 Jun 2016 15:22:00 -0000
From: Simon Marchi <simon.marchi@polymtl.ca>
To: Yao Qi <qiyaoltc@gmail.com>
Cc: Simon Marchi <simon.marchi@ericsson.com>, GDB <gdb@sourceware.org>
Subject: Re: Debugging return.exp on ARM
In-Reply-To: <CAH=s-POSVSnoJw5xeaef8Zq0mMO03hvaVbKwLEw11LVFQxPXXA@mail.gmail.com>
References: <574712FC.5090409@ericsson.com> <CAH=s-POSVSnoJw5xeaef8Zq0mMO03hvaVbKwLEw11LVFQxPXXA@mail.gmail.com>
Message-ID: <4dcab5ef69ec0142d42e62d7481f604a@simark.ca>
X-Sender: simon.marchi@polymtl.ca
User-Agent: Roundcube Webmail/1.2.0
X-IsSubscribed: yes
X-SW-Source: 2016-06/txt/msg00002.txt.bz2

On 2016-06-01 11:17, Yao Qi wrote:
> On Thu, May 26, 2016 at 4:15 PM, Simon Marchi 
> <simon.marchi@ericsson.com> wrote:
>> 
>> First, is anybody able to reproduce the problem on other boards?  
>> Then, does anybody
>> have an idea what could cause this?
> 
> I saw this problem on my arm boards too.  I triaged this problem
> before, but didn't
> get anything useful.

I brought this problem to the ARM kernel mailing list, it seems the 
problem was really in ptrace:

http://lists.infradead.org/pipermail/linux-arm-kernel/2016-May/431962.html

Does the suggested fix work for you as well?