[Qgis-developer] [QGIS-Server] Segfault malloc on master

[rldhont]

Hi Marco,

More information with valgrind :
</WFS_Capabilities>
==26940== Invalid read of size 4
==26940==    at 0x43EE67: QBasicAtomicInt::deref() (qatomic_x86_64.h:133)
==26940==    by 0x43F054: QString::~QString() (in 
/home/dhont/3liz_dev/QGIS-Compil/qgis_rldhont/build/bin/qgis_mapserv.fcgi)
==26940==    by 0x889B529: __cxa_finalize (cxa_finalize.c:55)
==26940==    by 0x50234D2: ??? (in 
/home/dhont/3liz_dev/QGIS-Compil/qgis_rldhont/build/lib/libqgis_core.so.2.1.0)
==26940==    by 0x400FF46: _dl_fini (dl-fini.c:253)
==26940==    by 0x889B120: __run_exit_handlers (exit.c:77)
==26940==    by 0x889B1A4: exit (exit.c:99)
==26940==    by 0x8880EAB: (below main) (libc-start.c:294)
==26940==  Address 0x29aeb390 is 0 bytes inside a block of size 40 free'd
==26940==    at 0x4C2BA6C: free (in 
/usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==26940==    by 0x6741487: QString::free(QString::Data*) (in 
/usr/lib/x86_64-linux-gnu/libQtCore.so.4.8.4)
==26940==    by 0x43F06A: QString::~QString() (in 
/home/dhont/3liz_dev/QGIS-Compil/qgis_rldhont/build/bin/qgis_mapserv.fcgi)
==26940==    by 0x889B120: __run_exit_handlers (exit.c:77)
==26940==    by 0x889B1A4: exit (exit.c:99)
==26940==    by 0x8880EAB: (below main) (libc-start.c:294)
But I don't have the file and line.

Regardes,
René-Luc


Le 29/11/2013 07:54, Marco Hugentobler a écrit :
> Hi René-Luc
>
> I don't have a segfault with GetCapabilities here. Maybe it happens 
> not with all projects?
>
> Regards,
> Marco
>
> On 28.11.2013 15:59, rldhont wrote:
>> Hi Marco,
>>
>> I found time to test QGIS-Server master on gdb.
>>
>> I'm testing GetCapabilities, and QGIS-Server segfaults after sending 
>> the document.
>> </WMS_Capabilities>
>> [Thread 0x7fffc6b49700 (LWP 1477) exited]
>> [Thread 0x7fffc73d7700 (LWP 1475) exited]
>> [Thread 0x7fffc7bd8700 (LWP 1474) exited]
>>
>> Program received signal SIGSEGV, Segmentation fault.
>> 0x00007ffff4029cdb in malloc_consolidate (
>>     av=av at entry=0x7ffff436c740 <main_arena>) at malloc.c:4094
>> 4094    malloc.c: Aucun fichier ou dossier de ce type.
>>
>> If the segfault arriving before the client receiving all the 
>> document, the connexion is closed and the document is incomplet.
>>
>> The GetCapabilities request is not the only one to generate a segfault.
>>
>> Do you have an idea ?
>>
>> Regards,
>> René-Luc D'Hont
>>
>>
>
>