[mapserver-users] Need help testing WMS segfault
Roger André
randre at gmail.com
Fri Jan 29 17:04:32 PST 2010
<sigh> I'm an idiot. Total size is much smaller.
72K agg_wms_segfault.tar.gz
Paul, you'll appreciate this. The file is much smaller when you do this:
$ ogr2ogr parcel_clip.shp PG:"host=localhost dbname=foo" \
-sql "SELECT
parcel_id,
import_exp,
external_i,
ST_Intersection('SRID=4326;POLYGON((-122.339256836
47.6576914062,
-122.331763672 47.6576914062,
-122.331763672 47.6651845703,
-122.339256836 47.6651845703,
-122.339256836 47.6576914062))', the_geom)
FROM parcel
WHERE 'SRID=4326;POLYGON((-122.339256836 47.6576914062,
-122.331763672
47.6576914062,
-122.331763672
47.6651845703,
-122.339256836
47.6651845703,
-122.339256836
47.6576914062))'
&& the_geom" \
-nlt POLYGON
instead of just:
$ ogr2ogr parcel_clip.shp PG:"host=localhost dbname=foo" \
-sql "SELECT
parcel_id,
import_exp,
external_i,
ST_Intersection('SRID=4326;POLYGON((-122.339256836
47.6576914062,
-122.331763672 47.6576914062,
-122.331763672 47.6651845703,
-122.339256836 47.6651845703,
-122.339256836 47.6576914062))', the_geom)
FROM parcel"
-nlt POLYGON
I'll file the bug now.
Roger
--
On Fri, Jan 29, 2010 at 4:42 PM, Paul Ramsey <pramsey at opengeo.org> wrote:
> File bug in trac
>
> http://trac.osgeo.org/mapserver
>
> With a 5mb attachement, you might need to separately upload it somewhere
> and post a URL, not sure what the attachment max size is for osgeo trac.
>
> P
>
> On 2010-01-29, at 4:40 PM, Roger André wrote:
>
> Alright, I've clipped the data sets down to areas just slightly larger than
> the WMS bbox, cleaned up the map file, and replicated the WMS to make sure
> that it still breaks. The tgz file that contains the mapfile and 2
> shapefiles is just under 5 MB. Where should I file the bug, and can I
> attach the data to the bug?
>
> Thanks,
>
> Roger
> --
>
>
>
> On Fri, Jan 29, 2010 at 2:57 PM, Roger André <randre at gmail.com> wrote:
>
>> Hi Paul,
>>
>> Ok. I'll see if I can replicate the problem with a single data layer, and
>> will then package everything together so another developer can run it.
>>
>> Thanks,
>>
>> Roger
>> --
>>
>>
>> On Fri, Jan 29, 2010 at 2:16 PM, Paul Ramsey <pramsey at opengeo.org> wrote:
>>
>>> Lovely, Another AGG bug. Well the next thing is to package up your
>>> environment so a developer can duplicate the problem on their rig. Figure
>>> out which layer it is, so you only have to pack that data up. Since the
>>> issue is arising in AGG, flag the ticket to the AGG module. When you pack up
>>> your map file, remember to also pack up or strip out things like templates,
>>> font libraries, symbol libraries, etc. Ideally, copy the whole mess to a new
>>> path on your system ensure it does in fact run independently of the rest of
>>> your installation.
>>>
>>> Best,
>>>
>>> Paul
>>>
>>> On 2010-01-29, at 2:11 PM, Roger André wrote:
>>>
>>> Hi Paul,
>>>
>>> Thanks for the advice. (Chris Schmidt suggested I do the same thing in
>>> IRC yesterday, and I forgot to try it.)
>>>
>>> Below are the results of gdb. It's fun to run, but uhm... not something
>>> I'm readily able to decipher (yet).
>>>
>>> $ gdb /usr/lib/cgi-bin/mapserv
>>> GNU gdb (GDB) 7.0-ubuntu
>>> Copyright (C) 2009 Free Software Foundation, Inc.
>>> License GPLv3+: GNU GPL version 3 or later <
>>> http://gnu.org/licenses/gpl.html>
>>> This is free software: you are free to change and redistribute it.
>>> There is NO WARRANTY, to the extent permitted by law. Type "show
>>> copying"
>>> and "show warranty" for details.
>>> This GDB was configured as "i486-linux-gnu".
>>> For bug reporting instructions, please see:
>>> <http://www.gnu.org/software/gdb/bugs/>...
>>> Reading symbols from /usr/lib/cgi-bin/mapserv...done.
>>> (gdb) run
>>> "QUERY_STRING=map=/var/www/mapfiles/seattle.map&layers=roads&styles=&service=WMS&width=256&format=image/png&request=GetMap&height=256&srs=EPSG:4326&version=1.1.1&bbox=-122.338256836,47.6586914062,-122.332763672,47.6641845703"
>>> Starting program: /usr/lib/cgi-bin/mapserv
>>> "QUERY_STRING=map=/var/www/mapfiles/seattle.map&layers=roads&styles=&service=WMS&width=256&format=image/png&request=GetMap&height=256&srs=EPSG:4326&version=1.1.1&bbox=-122.338256836,47.6586914062,-122.332763672,47.6641845703"
>>> [Thread debugging using libthread_db enabled]
>>>
>>> Program received signal SIGSEGV, Segmentation fault.
>>> 0x0740bbf2 in ?? () from /lib/tls/i686/cmov/libc.so.6
>>> (gdb) bt
>>> #0 0x0740bbf2 in ?? () from /lib/tls/i686/cmov/libc.so.6
>>> #1 0x0740d868 in malloc () from /lib/tls/i686/cmov/libc.so.6
>>> #2 0x006abbb7 in operator new(unsigned int) () from
>>> /usr/lib/libstdc++.so.6
>>> #3 0x006abced in operator new[](unsigned int) () from
>>> /usr/lib/libstdc++.so.6
>>> #4 0x080dbdd5 in void
>>> mapserver::render_scanlines<mapserver::rasterizer_scanline_aa<mapserver::rasterizer_sl_clip<mapserver::ras_conv_int>
>>> >, mapserver::scanline_u8,
>>> mapserver::renderer_scanline_aa_solid<mapserver::renderer_base<mapserver::pixfmt_alpha_blend_rgba<mapserver::blender_rgba_pre<mapserver::rgba8,
>>> mapserver::order_bgra>, mapserv_row_ptr_cache<int>, int> > >
>>> >(mapserver::rasterizer_scanline_aa<mapserver::rasterizer_sl_clip<mapserver::ras_conv_int>
>>> >&, mapserver::scanline_u8&,
>>> mapserver::renderer_scanline_aa_solid<mapserver::renderer_base<mapserver::pixfmt_alpha_blend_rgba<mapserver::blender_rgba_pre<mapserver::rgba8,
>>> mapserver::order_bgra>, mapserv_row_ptr_cache<int>, int> > >&) ()
>>> #5 0x080ba7ac in T.1744 ()
>>> #6 0x080bdbda in msDrawShadeSymbolAGG ()
>>> #7 0x0813b3d2 in msDrawShadeSymbol ()
>>> #8 0x0809ff17 in msDrawShape ()
>>> #9 0x080a2cfe in msDrawVectorLayer ()
>>> #10 0x080a343d in msDrawLayer ()
>>> #11 0x080a4fd7 in msDrawMap ()
>>> #12 0x08157d82 in msWMSGetMap ()
>>> #13 0x0815cf36 in msWMSDispatch ()
>>> #14 0x080e9924 in msOWSDispatch ()
>>> #15 0x08056583 in main ()
>>> (gdb)
>>>
>>> Roger
>>> --
>>>
>>> On Fri, Jan 29, 2010 at 1:38 PM, Paul Ramsey <pramsey at opengeo.org>wrote:
>>>
>>>> Roger,
>>>>
>>>> It looks like you're on Linux, so pull a stacktrace, it's fun!
>>>>
>>>> gdb /path/to/mapserv
>>>>
>>>> ... lots of info ...
>>>>
>>>> (gdb) run
>>>> "QUERY_STRING=map=/var/www/mapfiles/seattle.map&layers=roads&styles=&service=WMS&width=256&format=image/png&request=GetMap&height=256&srs=EPSG:4326&version=1.1.1&bbox=-122.338256836,47.6586914062,-122.332763672,47.6641845703"
>>>>
>>>> then when you hit to segfault, do
>>>>
>>>> (gdb) bt
>>>>
>>>> bt stands for backtrace
>>>>
>>>> now you'll have a lot more useful information about what went wrong,
>>>>
>>>> Yours,
>>>>
>>>> Paul
>>>>
>>>> On Fri, Jan 29, 2010 at 1:27 PM, Roger André <randre at gmail.com> wrote:
>>>> > Hi All,
>>>> >
>>>> > I'm experiencing some strange behavior that I would appreciate some
>>>> help
>>>> > testing. My MapServer 5.6 instance is segfaulting in response to
>>>> certain
>>>> > WMS requests it is receiving from TileCache. Below is one of the
>>>> specific
>>>> > requests:
>>>> >
>>>> >
>>>> http://localhost/cgi-bin/mapserv?map=/var/www/mapfiles/seattle.map&layers=roads&styles=&service=WMS&width=256&format=image/png&request=GetMap&height=256&srs=EPSG:4326&version=1.1.1&bbox=-122.338256836,47.6586914062,-122.332763672,47.6641845703
>>>> >
>>>> > I'd appreciate it if someone who has a layer that covers Seattle would
>>>> try
>>>> > the bbox extents listed above and report back if it causes an error
>>>> for
>>>> > them.
>>>> >
>>>> > FYI - When I set this bbox as the EXTENTS in my MAP, and the SIZE to
>>>> 256
>>>> > 256, Mapserver delivers the image without any problem.
>>>> >
>>>> > Thanks,
>>>> >
>>>> > Roger
>>>> >
>>>> > _______________________________________________
>>>> > mapserver-users mailing list
>>>> > mapserver-users at lists.osgeo.org
>>>> > http://lists.osgeo.org/mailman/listinfo/mapserver-users
>>>> >
>>>> >
>>>>
>>>
>>>
>>> --
>>> Paul Ramsey
>>> OpenGeo - http://opengeo.org
>>> Breath in. Breath out. Ahhh. PostGIS.
>>>
>>>
>>>
>>>
>>
>
> --
> Paul Ramsey
> OpenGeo - http://opengeo.org
> PostGIS topical ointment. Cures slow maps.
>
>
>
>
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