[ofw] memory violation in wv_srq Query

[Shiqing Fan]

  Hi Sean,

I'm running the code on Windows Server 2008 HPC Edition, with AMD 
Opteron processor 250 2.40GHz (2 processors).

Other than this problem, everything seems working with our application. :-)


Thanks,
Shiqing


On 2010-7-15 7:45 PM, Hefty, Sean wrote:
>>> I got a memory violation error in wv_srq.cpp Query() function around line
>>> 202. It seems using uninitialized verbsData.output_size for memcpy. The
>>> verbsData.input_size is initialized in WvPreQueryQp (wvuverbs.cpp), and
>> it
>>> has a similar memcpy in this function too.
>>>
>>> Could this be a bug? It happens when I call ibv_modify_srq() in the
>>> application.
>> I'm not sure if any other app has ever called through the SRQ code path.
>> I'll take a look at this.
> This definitely looks like a bug.  I believe that I need to add:
>
> p_umv_buf->output_size = 0;
>
> to wv_uverbs.cpp everywhere that the input_size is set to 0.
>
> I'll make that change and provide you an updated copy of winverbs.dll for further testing.  What OS and CPU architecture are you running on?
>
> - Sean


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Shiqing Fan                          http://www.hlrs.de/people/fan
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