linux-kernel - Re: Crash in msm serial on dragonboard with ftrace bootargs

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Date:   Thu, 18 Oct 2018 10:51:18 +0530
From:   Sai Prakash Ranjan <saiprakash.ranjan@...eaurora.org>
To:     Steven Rostedt <rostedt@...dmis.org>
Cc:     Stephen Boyd <sboyd@...nel.org>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Andy Gross <andy.gross@...aro.org>,
        David Brown <david.brown@...aro.org>,
        Jiri Slaby <jslaby@...e.com>,
        Kees Cook <keescook@...omium.org>,
        "Joel Fernandes (Google)" <joel@...lfernandes.org>,
        Geliang Tang <geliangtang@...il.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Pramod Gurav <gpramod@...eaurora.org>,
        linux-arm-msm@...r.kernel.org, linux-soc@...r.kernel.org,
        linux-serial@...r.kernel.org, linux-kernel@...r.kernel.org,
        Rajendra Nayak <rnayak@...eaurora.org>,
        Vivek Gautam <vivek.gautam@...eaurora.org>,
        Sibi Sankar <sibis@...eaurora.org>
Subject: Re: Crash in msm serial on dragonboard with ftrace bootargs

On 10/18/2018 8:03 AM, Steven Rostedt wrote:
> On Wed, 17 Oct 2018 00:36:05 +0530
> Sai Prakash Ranjan <saiprakash.ranjan@...eaurora.org> wrote:
> 
>> On 10/17/2018 12:33 AM, Steven Rostedt wrote:
>>> On Wed, 17 Oct 2018 00:31:03 +0530
>>> Sai Prakash Ranjan <saiprakash.ranjan@...eaurora.org> wrote:
>>>    
>>>> Haa seems like you are right! With "ftrace=function
>>>> ftrace_filter=msm_read" , I can trigger the crash, but
>>>> sadly "ftrace_notrace=msm_read" also crashes.
>>>
>>> So there's more than one problem area.
>>>
>>> What about ftrace_notrace=m*
>>>
>>> ?
>>>    
>>
>> That too crashes.
>>
> 
> So something else is causing an issue besides just msm_read.
> 
> Can you do an objdump -dr of the entire vmlinux binary and gzip it and
> post it somewhere. Not sure if it would be too big to email. You could
> try sending it to me privately. I'd like to see the binary that you are
> using.
> 

I have sent the objdump and dot config to you privately.

Thanks,
Sai
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