[ZOO-Discuss] Execute request returns SIGSEGV message from the zoo kernel for Python

[Armin Burger]

Gerald

I followed all the steps and still get the segfault message

<ows:Exception exceptionCode="InternalError">
    <ows:ExceptionText>ZOO Kernel failed to process your request
receiving signal 11 = SIGSEGV</ows:ExceptionText>
  </ows:Exception>

If I compile with USE_DBG the it writes out a core dump file,
analyzing it gives the message

Core was generated by `./zoo_loader.cgi
request=Execute&service=WPS&version=1.0.0&Identifier=HelloPy&D'.
Program terminated with signal 11, Segmentation fault.
#0  0xb7f317ea in curl_formadd () from /usr/lib/libcurl.so.3
(gdb) bt
#0  0xb7f317ea in curl_formadd () from /usr/lib/libcurl.so.3
#1  0xb7f41018 in curl_slist_free_all () from /usr/lib/libcurl.so.3
#2  0xb7f4cf67 in curl_easy_setopt () from /usr/lib/libcurl.so.3
#3  0x08059aaf in InternetOpen ()
#4  0x0804d4f0 in runRequest (request_inputs=0x806e988) at
zoo_service_loader.c:708
#5  0x0804b201 in cgiMain () at zoo_loader.c:264
#6  0x08060414 in main (argc=2, argv=0xbf88d584) at cgic.c:303


armin

On Tue, Mar 22, 2011 at 4:39 PM, Gérald Fenoy <gerald.fenoy at geolabs.fr> wrote:
> Hi Armin,
> I did the following steps and everything goes right.
> 1) Download the SVN source tree
> 2) compile cgic206 from the SVN source tree thirds  directory
> 3) go into zoo-kernel directory and run autoconf
> 4) run : ./configure --with-python
> 5) create a directory zoo-dist
> 6) copy zoo_loader.cgi and main.cfg in zoo-dist
> 7) copy zoo-services/hello-py/test_service.py and
> zoo-services/hello-py/cgi-env/HelloPy.zcfg in zoo-dist
> 8) from the zoo-dist directory, I run the following :
> ./zoo_loader.cgi
> "request=Execute&service=WPS&version=1.0.0&Identifier=HelloPy&DataInputs=a=Demo"
> I get the hello world message included in the ExecuteResponse.
> Please can you try to reproduce the steps above on your platform and
> let me know if the error still occurs ?
> Hope to hear from you,
> Best
>
> Le 22 mars 2011 à 14:16, Armin Burger a écrit :
>
> Nick
>
> I tried the SVN from today, still a segfault. I tried using GDB and
> the only debug info I get is:
>
> Core was generated by `./zoo_loader.cgi
> Service=WPS&Request=Execute&Version=1.0.0&Identifier=HelloPy&D'.
> Program terminated with signal 11, Segmentation fault.
> #0  0xb70c4a61 in fileno_unlocked () from /lib/tls/libc.so.6
> (gdb) bt
> #0  0xb70c4a61 in fileno_unlocked () from /lib/tls/libc.so.6
> #1  0xb73ef188 in FCGI_fileno () from /usr/lib/libfcgi.so.0
> #2  0x0804b039 in cgiMain () at zoo_loader.c:97
> #3  0x080602b3 in main (argc=2, argv=0xbfd81284) at cgic.c:287
>
>
> armin
>
>
> On Thu, Mar 17, 2011 at 3:42 PM, nicolas bozon <nicolas.bozon at gmail.com>
> wrote:
>
> Hi Armin,
>
> You are right, it seems we get a problem, as we could reproduce the segfault
>
> this morning before going to the code sprint.
>
> We'll try to solve the problem with gerald today and we'lll keep you
>
> informed.
>
> Best,
>
> Nick
>
> 2011/3/14 Armin Burger <armin.burger at gmail.com>
>
> Hi all
>
> after successfully compilation and installation of the zoo_loader.cgi
>
> the "GetCapabilities" and "Describe Process" work fine. But as soon as
>
> I try to run the Excecute request  using the simple HelloPy and a
>
> python serviceProvider as hello.py with
>
>
> http://my.website/zoo/?Service=WPS&Request=Execute&Version=1.0.0&Identifier=HelloPy&DataInputs=a=My%20Name
>
> the zoo kernel returns a segmentation fault message like
>
> <?xml version="1.0" encoding="UTF-8"?>
>
> <ows:ExceptionReport xmlns:ows="http://www.opengis.net/ows/1.1"
>
> xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
>
> xmlns:xlink="http://www.w                  3.org/1999/xlink"
>
> xsi:schemaLocation="http://www.opengis.net/ows/1.1
>
> http://schemas.opengis.net/ows/1.1.0/owsExceptionReport.xsd"
>
> xml:lang="en-                  US" version="1.1.0">
>
>  <ows:Exception exceptionCode="InternalError">
>
>    <ows:ExceptionText>ZOO Kernel failed to process your request
>
> receiving signal 11 = SIGSEGV</ows:ExceptionText>
>
>  </ows:Exception>
>
> </ows:ExceptionReport>
>
> Same happens when I run it from the command line
>
> ./zoo_loader.cgi
>
> "Service=WPS&Request=Execute&Version=1.0.0&Identifier=HelloPy&DataInputs=a=My%20Name"
>
> So it seems sort of "caught" segfault from some internal
>
> functionality. But I do not know how to do some kind of debugging.
>
> Any ideas what I could try?
>
> Armin
>
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> Gérald Fenoy
> gerald.fenoy at geolabs.fr
>