linux-kernel - Re: [PATCH] perf test: Test case 66 broken on s390 (lib/traceevent issue)

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Date:   Mon, 27 Jan 2020 08:34:23 +0100
From:   Thomas Richter <tmricht@...ux.ibm.com>
To:     Steven Rostedt <rostedt@...dmis.org>,
        Masami Hiramatsu <mhiramat@...nel.org>
Cc:     linux-kernel@...r.kernel.org, linux-perf-users@...r.kernel.org,
        acme@...nel.org, borntraeger@...ibm.com, gor@...ux.ibm.com,
        sumanthk@...ux.ibm.com, heiko.carstens@...ibm.com
Subject: Re: [PATCH] perf test: Test case 66 broken on s390 (lib/traceevent
 issue)

On 1/24/20 5:36 PM, Steven Rostedt wrote:
> On Sat, 25 Jan 2020 01:31:53 +0900
> Masami Hiramatsu <mhiramat@...nel.org> wrote:
> 
>> Hi Steven and Thomas,
>>
>> On Fri, 24 Jan 2020 10:07:42 -0500
>> Steven Rostedt <rostedt@...dmis.org> wrote:
>>
>>> This looks like a kernel bug, not a libtraceevent parsing bug.  
>>
>> Totally agreed. It was my fault to update the print format.
>> Even if still there is a problem on s390, this patch must be
>> applied.
> 
> Thanks Masami for looking into it.
> 
> Thomas,
> 
> Please still test this patch. If it works, I'd like to add a
> Reported-by and Tested-by tag from you.
> 
> -- Steve
> 
>>
>> Fixes: 88903c464321 ("tracing/probe: Add ustring type for user-space string")
>> Acked-by: Masami Hiramatsu <mhiramat@...nel.org>
>>

Steven and Masami,

thanks for the patch, it fixes this issue!

PS: I should have sent this description earlier, would have saved a week of debugging
on my side....

-- 
Thomas Richter, Dept 3252, IBM s390 Linux Development, Boeblingen, Germany
--
Vorsitzender des Aufsichtsrats: Matthias Hartmann
Geschäftsführung: Dirk Wittkopp
Sitz der Gesellschaft: Böblingen / Registergericht: Amtsgericht Stuttgart, HRB 243294