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From "Serghei Samsi (Created) (JIRA)" <j...@apache.org>
Subject [jira] [Created] (AXIS2C-1583) Memory leak in axis2_simple_http_svr_conn_read_request() (File core/transport/http/common/simple_http_svr_conn.c)
Date Mon, 30 Jan 2012 15:22:10 GMT
Memory leak in axis2_simple_http_svr_conn_read_request() (File core/transport/http/common/simple_http_svr_conn.c)
-----------------------------------------------------------------------------------------------------------------

                 Key: AXIS2C-1583
                 URL: https://issues.apache.org/jira/browse/AXIS2C-1583
             Project: Axis2-C
          Issue Type: Bug
          Components: transport/http
    Affects Versions: 1.6.0
         Environment: Solaris 10
            Reporter: Serghei Samsi


While running stress custom tests on AXIS2C v.1.6.0 (Solaris 10 enviroment), I've observed
memory leak which continously grows RSS segment of AXIS2C process (simple http server is used).

Running via Solaris MDB pointed directly to problem:
            ADDR          BUFADDR        TIMESTAMP           THREAD
                            CACHE          LASTLOG         CONTENTS
         818fc40          818e4c0    18c2bd8827be3                2
                          809d590                0                0
                 libumem.so.1`umem_cache_alloc_debug+0x16c
                 libumem.so.1`umem_cache_alloc+0x15c
                 libumem.so.1`umem_alloc+0x3f
                 libumem.so.1`malloc+0x23
                 libaxutil.so.0.6.0`axutil_allocator_malloc_impl+0x1b
                 libaxutil.so.0.6.0`axutil_strdup+0x37
                 libaxutil.so.0.6.0`axutil_stracat+0x9d

                 libaxis2_http_common.so.0.6.0`axis2_simple_http_svr_conn_read_r
                 equest+0x30e

                 libaxis2_http_receiver.so.0.6.0`axis2_svr_thread_worker_func+0x
                 7a
                 libaxutil.so.0.6.0`dummy_worker+0x10
                 libc.so.1`_thr_setup+0x4e
                 libc.so.1`_lwp_start

umem_alloc_16 leak: 1751 buffers, 16 bytes each, 28016 bytes total
            ADDR          BUFADDR        TIMESTAMP           THREAD
                            CACHE          LASTLOG         CONTENTS
         81b79d8          81b4d60    18c2bdb208a68                4
                          809d590                0                0
                 libumem.so.1`umem_cache_alloc_debug+0x16c
                 libumem.so.1`umem_cache_alloc+0xe1
                 libumem.so.1`umem_alloc+0x3f
                 libumem.so.1`malloc+0x23
                 libaxutil.so.0.6.0`axutil_allocator_malloc_impl+0x1b
                 libaxutil.so.0.6.0`axutil_strdup+0x37
                 libaxutil.so.0.6.0`axutil_stracat+0x9d

                 libaxis2_http_common.so.0.6.0`axis2_simple_http_svr_conn_read_r
                 equest+0x30e

                 libaxis2_http_receiver.so.0.6.0`axis2_svr_thread_worker_func+0x
                 7a
                 libaxutil.so.0.6.0`dummy_worker+0x10
                 libc.so.1`_thr_setup+0x4e
                 libc.so.1`_lwp_start

It is a trivial patch fix proposed.

--- axi2c-src-1.6.0-orig/src/core/transport/http/common/simple_http_svr_conn.c  2009-04-06
07:46:47.000000000 +0300
+++ axis2c-src-1.6.0/src/core/transport/http/common/simple_http_svr_conn.c      2012-01-30
16:55:40.109233000 +0200
@@ -307,6 +307,11 @@
             break;
         }
     }
+    if (str_line)
+    {
+       AXIS2_FREE(env->allocator, str_line);
+       str_line = NULL;
+    }
     return request;
 }

A quick review of AXIS2c v.1.7.0 shows that v.1.7.0 doesn't experience such problem. But probably
more investigation should be done.

Anyhow AXIS2c v.1.6.0 can be fixed by proposed patch.


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