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From: Alexandra Yates <alexandra.yates at linux.intel.com>
Subject: Re: [Powertop] Segmentation fault with powertop --html
Date: Mon, 19 May 2014 10:37:39 -0700
Message-ID: <61939.10.24.5.10.1400521059.squirrel@linux.intel.com>
In-Reply-To: 20140517115534.22c5f593@ilfaris
To: powertop@lists.01.org
List-ID: <powertop@lists.01.org>

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> -----BEGIN PGP SIGNED MESSAGE-----
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>
> Hello,
>
> I get a segmentation fault with powertop 2.6 if I want to generate an
> HTML report:
> $ powertop --html
> Loaded 750 prior measurements
> RAPL device for cpu 0
> RAPL device for cpu 0
> Preparing to take measurements
>   unknown op '{'
> [1]    5221 segmentation fault (core dumped)  powertop --html
>
> Backtrace:
> Core was generated by `powertop --html'.
> Program terminated with signal 11, Segmentation fault.
> #0  0x00007f9f6d52019f in std::string::assign(std::string const&) () from
> /usr/lib/x86_64-linux-gnu/libstdc++.so.6
> Traceback (most recent call last):
>   File
> "/usr/share/gdb/auto-load/usr/lib/x86_64-linux-gnu/libstdc++.so.6.0.20-gd=
b.py",
> line 59, in <module>
>     from libstdcxx.v6.printers import register_libstdcxx_printers
>   File
> "/usr/lib/x86_64-linux-gnu/../../share/gcc-4.9/python/libstdcxx/v6/printe=
rs.py",
> line 392
>     raise ValueError, "Unsupported implementation for %s" % str(node.type)
>                     ^
> SyntaxError: invalid syntax
> (gdb) backtrace
> #0  0x00007f9f6d52019f in std::string::assign(std::string const&) () from
> /usr/lib/x86_64-linux-gnu/libstdc++.so.6
> #1  0x00000000004114ae in operator=3D (__str=3D..., this=3D0x7fff595c2408=
) at
> /usr/include/c++/4.8/bits/basic_string.h:547
> #2  report_display_cpu_cstates () at cpu/cpu.cpp:529
> #3  0x0000000000449374 in one_measurement (seconds=3Dseconds(a)entry=3D1,
> workload=3Dworkload(a)entry=3D0x0) at main.cpp:221
> #4  0x00000000004495c2 in make_report (time=3D20,
> workload=3Dworkload(a)entry=3D0x7fff595c3b30 "", iterations=3Diterations(=
a)entry=3D1,
> file=3Dfile(a)entry=3D0x7fff595c2b30 "powertop.html") at main.cpp:254
> #5  0x000000000040741d in main (argc=3D2, argv=3D0x7fff595c4c58) at
> main.cpp:441
>
> If you need more information, I will happily provide it.
>
> Cheers,
> Julian
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Please give me more details on what platform are you executing this. I
can't reproduce this.

Thank you,
Alexandra.

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