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https://issues.apache.org/jira/browse/AXIS2C-1586?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Bill Blough updated AXIS2C-1586:
--------------------------------
Labels: patch (was: )
> Memory leak in axis2_http_worker_process_request (http_worker.c)
> ----------------------------------------------------------------
>
> Key: AXIS2C-1586
> URL: https://issues.apache.org/jira/browse/AXIS2C-1586
> Project: Axis2-C
> Issue Type: Bug
> Components: core/transport
> Affects Versions: 1.6.0, 1.7.0, Current (Nightly)
> Environment: Solaris 10
> Reporter: Serghei Samsi
> Priority: Major
> Labels: patch
> Attachments: axis2-c-http_worker-out_stream.diff
>
>
> If trying to connect to HTTP based service (axis2_http_server) by using
> telnet and simply exiting, appears memory leak which grows after each connect.
> How to reproduce:
> Try many times
> # telnet <AXIS_IP> <AXIS_PORT>
> ^C
> Solaris MBD output (axis2_http_server binary was started with the following
> environment: LD_PRELOAD=libumem.so.1 UMEM_DEBUG=default):
> umem_alloc_2304 leak: 1 buffer, 2304 bytes
> ADDR BUFADDR TIMESTAMP THREAD
> CACHE LASTLOG CONTENTS
> 810f380 8111c00 34aa8a030e830 2
> 80b3590 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_stream_create_basic+0x57
>
> libaxis2_http_common.so.0.6.0`axis2_http_worker_process_request
> +0x20
>
> libaxis2_http_receiver.so.0.6.0`axis2_svr_thread_worker_func+0x
> 8c
> libaxutil.so.0.6.0`dummy_worker+0x10
> libc.so.1`_thr_setup+0x4e
> libc.so.1`_lwp_start
> umem_alloc_56 leak: 1 buffer, 56 bytes
> ADDR BUFADDR TIMESTAMP THREAD
> CACHE LASTLOG CONTENTS
> 817a630 81799e8 34aa8a030d2fd 2
> 80a3010 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_stream_create_internal+0x1e
> libaxutil.so.0.6.0`axutil_stream_create_basic+0x1e
>
> libaxis2_http_common.so.0.6.0`axis2_http_worker_process_request
> +0x20
>
> libaxis2_http_receiver.so.0.6.0`axis2_svr_thread_worker_func+0x
> 8c
> libaxutil.so.0.6.0`dummy_worker+0x10
> libc.so.1`_thr_setup+0x4e
> libc.so.1`_lwp_start
> The problems is in leaked out_stream:
> <code>
> AXIS2_EXTERN axis2_bool_t AXIS2_CALL
> axis2_http_worker_process_request(
> ...
> axutil_stream_t *out_stream = axutil_stream_create_basic(env);
> ...
> axis2_msg_ctx_set_transport_out_stream(msg_ctx, env, out_stream);
> ...
> return ...;
> <code>
> Comments on axis2_msg_ctx_set_transport_out_stream says that - citated "Here
> out_stream is set into the in message context".
> But is msg_cts is null, out_stream will never be freed. The basic idea is
> that stream should be created ONLY if msg_ctx does exist.
> So the trivial patch which fixes mentioned problem:
> *** axis2c-src-1.6.0-orig/src/core/transport/http/common/http_worker.c Mon
> Apr 6 07:46:47 2009
> --- axis2c-src-1.6.0/src/core/transport/http/common/http_worker.c Fri
> Feb 3 14:07:33 2012
> ***************
> *** 115,121 ****
> axutil_stream_t *request_body = NULL;
> /* Creating out_stream as basic stream */
> ! axutil_stream_t *out_stream = axutil_stream_create_basic(env);
> axis2_http_simple_response_t *response = NULL;
> /* Transport in and out descriptions */
> --- 115,121 ----
> axutil_stream_t *request_body = NULL;
> /* Creating out_stream as basic stream */
> ! axutil_stream_t *out_stream = NULL;
> axis2_http_simple_response_t *response = NULL;
> /* Transport in and out descriptions */
> ***************
> *** 474,480 ****
> * To avoid double freeing of out_stream we reset the out message
> context at the end of engine
> * receive function.
> */
> ! axis2_msg_ctx_set_transport_out_stream(msg_ctx, env, out_stream);
> headers = axis2_http_worker_get_headers(http_worker, env,
> simple_request);
> axis2_msg_ctx_set_transport_headers(msg_ctx, env, headers);
> --- 474,484 ----
> * To avoid double freeing of out_stream we reset the out message
> context at the end of engine
> * receive function.
> */
> ! if (msg_ctx)
> ! {
> ! out_stream = axutil_stream_create_basic(env);
> ! axis2_msg_ctx_set_transport_out_stream(msg_ctx, env, out_stream);
> ! }
> headers = axis2_http_worker_get_headers(http_worker, env,
> simple_request);
> axis2_msg_ctx_set_transport_headers(msg_ctx, env, headers);
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