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Date:   Sun, 29 Mar 2020 18:53:30 +0430
From:   ahmadkhorrami <ahmadkhorrami@ut.ac.ir>
To:     Milian Wolff <milian.wolff@kdab.com>
Cc:     Jiri Olsa <jolsa@redhat.com>, Steven Rostedt <rostedt@goodmis.org>,
        Arnaldo Carvalho de Melo <acme@redhat.com>,
        Linux-trace Users <linux-trace-users@vger.kernel.org>,
        Peter Zijlstra <peterz@infradead.org>,
        linux-trace-users-owner@vger.kernel.org,
        Jin Yao <yao.jin@linux.intel.com>,
        Namhyung Kim <namhyung@kernel.org>,
        Andi Kleen <ak@linux.intel.com>
Subject: Re: Wrong Perf Backtraces
In-Reply-To: <1867036.PIDvDuAF1L@agathebauer>
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Hi,
Good Point. But putting symbols aside, the addresses do not match, by 
themselves.
Regards.

On 2020-03-29 18:20, Milian Wolff wrote:

> On Sonntag, 29. März 2020 14:39:33 CEST ahmadkhorrami wrote:
> 
>> Thanks. I did both of your changes. Perhaps some outputs are revised.
>> But I still have repeated function calls and the script detects them.
>> Here is one of them when the sampling period is 1000 events:
> 
> <snip>
> 
>> Here, we have two consecutive "7f91788120b5
>> gtk_widget_propagate_state+0x195
>> (/usr/lib/x86_64-linux-gnu/libgtk-3.so.0.2200.30) gtkwidget.c:0" 
>> lines,
>> while "gtk_widget_propagate_state+0x195" is not recursive. It should
>> call "gtk_container_forall", which does not occur even after the 
>> second
>> (inner) call.
> 
> Potentially you are just lacking some debug symbols here for this GTK 
> library.
> note that "gtkwidget.c:0" is bogus already - the line numbers start 
> with 1, so
> a line of 0 reported indicates a lack of (full) debug information for 
> this
> file.
> 
> Cheers