[AXIS2C-1542] Memory leak in axis2c generated code

• Type: Bug
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: 1.6.0
• Fix Version/s: 1.7.0
• Component/s: core/clientapi
• Environment: Linux
• Assignee: Unassigned
• Reporter: Manoj Dhirde
• Created: 25/Mar/11 17:31
• Updated: 07/Apr/20 19:36

Description

Hi,

We are on version 1.6.0 for our axis2c client. We generated c code using
WSDL2C and there seems to be memory leak of 8K per request on the client
side. ValGrind analysis is pointing to axis2c-generated code as follows,

==22206== 48,164 (32,275 direct, 15,889 indirect) bytes in 374 blocks are definitely lost in loss record 647 of 675
==22206== at 0x4023D6E: malloc (vg_replace_malloc.c:207)
==22206== by 0x13767376: axutil_allocator_malloc_impl (in /opt/sac/lib/libaxutil.so.0)
==22206== by 0x1376C315: axutil_qname_create (in /opt/sac/lib/libaxutil.so.0)
==22206== by 0x134E7A57: adb_searchRecordsResponse_deserialize (in /opt/sac/lib/libACSServiceClient.so)
==22206== by 0x135C7534: axis2_stub_op_ACSServiceService_searchRecords (in /opt/sac/lib/libACSServiceClient.so)

I checked the adb_searchRecordsResponse_deserialize which is part of adb_searchRecordsResponse.c generated from the wsdl by WSDL2C, and I can see it calling axutil_qname_create and later calling axutil_qname_free as well. But this doesnt seem to get freed.

Then checked the qname.c under axis2c-src-1.6.0/util/src and in the axutil_qname_free function it reduces the property 'ref' by 1 and then checks for it being non-zero. And only if it's non-zero, axis frees the qname. Maybe having another reference to the qname is causing the ref being non-zero even after reducing it by one in axutil_qname_free? We are getting the searchResponse back from service and then getting elements from it. One example of it is as follows,

adb_subscriberList_t* subscribers = adb_searchRecordsResponse_get_subscribers(searchRecordsResponse, env);

and after this we are freeing searchRecordsResponse. Is this adb_subscriberList_t* subscribers causing a double reference and not freeing qname.

Any help on this is greatly appreciated.

Thanks,

Manoj Dhirde.