[Bug 797159] Significant memory leak in (at least) omxh264enc and omxmjpegdec on Raspberry Pi

[GStreamer (GNOME Bugzilla)]

https://bugzilla.gnome.org/show_bug.cgi?id=797159

--- Comment #3 from benwolsieffer at gmail.com ---
I figured out what was wrong with my valgrind setup and was able to get this
leak report (note that the pipeline was only running for a short time, so it
didn't leak that much memory):

==14223== Process terminating with default action of signal 2 (SIGINT)
==14223==    at 0x4BCFE34: _Exit (in
/nix/store/b6b0lfsn1wqhsinvy078i1b1vhi96fqs-glibc-2.27/lib/libc-2.27.so)
==14223== 
==14223== HEAP SUMMARY:
==14223==     in use at exit: 2,315,683 bytes in 20,885 blocks
==14223==   total heap usage: 101,153 allocs, 80,268 frees, 230,807,468 bytes
allocated
==14223== 
==14223== Thread 1:
==14223== 100 bytes in 1 blocks are possibly lost in loss record 7 of 31
==14223==    at 0x4847AD0: malloc (vg_replace_malloc.c:299)
==14223==    by 0x649C813: vcos_generic_mem_alloc_aligned
(vcos_mem_from_malloc.c:56)
==14223==    by 0x64646B7: vcos_malloc_aligned (vcos_mem_from_malloc.h:68)
==14223==    by 0x64646B7: vc_vchi_cec_init (vc_vchi_cecservice.c:236)
==14223==    by 0x645B473: bcm_host_init (bcm_host.c:115)
==14223==    by 0x577485B: gst_omx_core_acquire (gstomx.c:129)
==14223==    by 0x577B8FF: gst_omx_component_new (gstomx.c:781)
==14223==    by 0x578EDD7: gst_omx_video_enc_open (gstomxvideoenc.c:749)
==14223==    by 0x5573DDB: gst_video_encoder_change_state (in
/nix/store/wx5wjmlkfp8k32hqq26wby5i2jigwzbf-gst-plugins-base-1.14.3/lib/libgstvideo-1.0.so.0.1403.0)
==14223== 
==14223== 108 bytes in 14 blocks are possibly lost in loss record 8 of 31
==14223==    at 0x48479D8: malloc (vg_replace_malloc.c:298)
==14223==    by 0x484A4DF: realloc (vg_replace_malloc.c:785)
==14223==    by 0x49F5943: g_realloc (in
/nix/store/l8wanykgzg5h18axlvv0nnicc0a40las-glib-2.56.0/lib/libglib-2.0.so.0.5600.0)
==14223== 
==14223== 240 bytes in 1 blocks are possibly lost in loss record 9 of 31
==14223==    at 0x4847AD0: malloc (vg_replace_malloc.c:299)
==14223==    by 0x649C813: vcos_generic_mem_alloc_aligned
(vcos_mem_from_malloc.c:56)
==14223==    by 0x649BC9F: vcos_malloc (vcos_mem_from_malloc.h:53)
==14223==    by 0x649BC9F: vcos_dummy_thread_create (vcos_pthreads.c:637)
==14223==    by 0x84BA03B: vcos_thread_current (vcos_platform.h:370)
==14223==    by 0x84BA03B: ilcs_execute_function_ex (vcilcs.c:800)
==14223==    by 0x84BAE53: ilcs_execute_function (vcilcs.c:833)
==14223==    by 0x84BBB7B: vcil_out_get (vcilcs_out.c:239)
==14223==    by 0x5775A23: gst_omx_component_get_parameter (gstomx.c:1133)
==14223==    by 0x5776BFB: gst_omx_port_update_port_definition (gstomx.c:1328)
==14223==    by 0x5776C9B: gst_omx_port_is_enabled (gstomx.c:2508)
==14223==    by 0x578218B: gst_omx_video_dec_loop (gstomxvideodec.c:1569)
==14223==    by 0x49343F3: gst_task_func (in
/nix/store/iqw3lnskbqrhg8l0sdpj9wimsl4ac8zp-gstreamer-1.14.3/lib/libgstreamer-1.0.so.0.1403.0)
==14223== 
==14223== 492 bytes in 4 blocks are possibly lost in loss record 13 of 31
==14223==    at 0x484A490: realloc (vg_replace_malloc.c:785)
==14223==    by 0x49F5943: g_realloc (in
/nix/store/l8wanykgzg5h18axlvv0nnicc0a40las-glib-2.56.0/lib/libglib-2.0.so.0.5600.0)
==14223== 
==14223== 1,008 bytes in 6 blocks are possibly lost in loss record 15 of 31
==14223==    at 0x484A228: calloc (vg_replace_malloc.c:711)
==14223==    by 0x40121DF: allocate_dtv (in
/nix/store/b6b0lfsn1wqhsinvy078i1b1vhi96fqs-glibc-2.27/lib/ld-2.27.so)
==14223== 
==14223== 1,628 bytes in 43 blocks are possibly lost in loss record 17 of 31
==14223==    at 0x484A228: calloc (vg_replace_malloc.c:711)
==14223==    by 0x49F58D3: g_malloc0 (in
/nix/store/l8wanykgzg5h18axlvv0nnicc0a40las-glib-2.56.0/lib/libglib-2.0.so.0.5600.0)
==14223== 
==14223== 210,528 bytes in 51 blocks are possibly lost in loss record 28 of 31
==14223==    at 0x4847AD0: malloc (vg_replace_malloc.c:299)
==14223==    by 0x649C813: vcos_generic_mem_alloc_aligned
(vcos_mem_from_malloc.c:56)
==14223==    by 0x648213F: vcos_malloc (vcos_mem_from_malloc.h:53)
==14223==    by 0x648213F: alloc_msgbuf (vchiq_lib.c:1753)
==14223==    by 0x648213F: completion_thread (vchiq_lib.c:1528)
==14223==    by 0x649B357: vcos_thread_entry (vcos_pthreads.c:144)
==14223==    by 0x4B0EFE3: start_thread (in
/nix/store/b6b0lfsn1wqhsinvy078i1b1vhi96fqs-glibc-2.27/lib/libpthread-2.27.so)
==14223== 
==14223== 1,110,432 bytes in 269 blocks are definitely lost in loss record 31
of 31
==14223==    at 0x4847AD0: malloc (vg_replace_malloc.c:299)
==14223==    by 0x649C813: vcos_generic_mem_alloc_aligned
(vcos_mem_from_malloc.c:56)
==14223==    by 0x648213F: vcos_malloc (vcos_mem_from_malloc.h:53)
==14223==    by 0x648213F: alloc_msgbuf (vchiq_lib.c:1753)
==14223==    by 0x648213F: completion_thread (vchiq_lib.c:1528)
==14223==    by 0x649B357: vcos_thread_entry (vcos_pthreads.c:144)
==14223==    by 0x4B0EFE3: start_thread (in
/nix/store/b6b0lfsn1wqhsinvy078i1b1vhi96fqs-glibc-2.27/lib/libpthread-2.27.so)
==14223== 
==14223== LEAK SUMMARY:
==14223==    definitely lost: 1,110,432 bytes in 269 blocks
==14223==    indirectly lost: 0 bytes in 0 blocks
==14223==      possibly lost: 214,104 bytes in 120 blocks
==14223==    still reachable: 979,155 bytes in 20,355 blocks
==14223==                       of which reachable via heuristic:
==14223==                         newarray           : 1,736 bytes in 63 blocks
==14223==         suppressed: 0 bytes in 0 blocks
==14223== Reachable blocks (those to which a pointer was found) are not shown.

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