[FFmpeg-trac] #8336(undetermined:new): memory leaks in ff_default_get_audio_buffer

FFmpeg trac at avcodec.org
Sat Oct 26 05:30:42 EEST 2019


#8336: memory leaks in ff_default_get_audio_buffer
-------------------------------------+-------------------------------------
             Reporter:  Suhwan       |                     Type:  defect
               Status:  new          |                 Priority:  normal
            Component:               |                  Version:  git-
  undetermined                       |  master
             Keywords:               |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------
 Summary of the bug:
 There are memory leaks in ff_default_get_audio_buffer
 How to reproduce:
 {{{
 % ffmpeg_g -y -i $PoC -filter_complex showfreqs -vbsf remove_extra -c
 ffvhuff tmp.dnxhd

 ffmpeg version N-95554-g9d711a90fd Copyright (c) 2000-2019 the FFmpeg
 developers
 built with clang version 6.0.0-1ubuntu2 (tags/RELEASE_600/final)
 configuration: --cc=clang --cxx=clang++ --ld=clang --enable-debug
 }}}

 Here's Valgrind log

 {{{
 ==20368== HEAP SUMMARY:
 ==20368==     in use at exit: 286,808 bytes in 161 blocks
 ==20368==   total heap usage: 5,859 allocs, 5,698 frees, 386,379,085 bytes
 allocated
 ==20368==
 ==20368== 286,808 (17,152 direct, 269,656 indirect) bytes in 32 blocks are
 definitely lost in loss record 10 of 10
 ==20368==    at 0x4C31E76: memalign (in /usr/lib/valgrind
 /vgpreload_memcheck-amd64-linux.so)
 ==20368==    by 0x4C31F91: posix_memalign (in /usr/lib/valgrind
 /vgpreload_memcheck-amd64-linux.so)
 ==20368==    by 0xF67AD2: av_malloc (mem.c:87)
 ==20368==    by 0xF67CD8: av_mallocz (mem.c:238)
 ==20368==    by 0xF5F0BA: av_frame_alloc (frame.c:191)
 ==20368==    by 0x2CF713: ff_frame_pool_get (framepool.c:201)
 ==20368==    by 0x2A2DE3: ff_default_get_audio_buffer (audio.c:73)
 ==20368==    by 0x400239: filter_frame (af_aresample.c:196)
 ==20368==    by 0x2BDE8B: ff_filter_frame_framed (avfilter.c:1084)
 ==20368==    by 0x2BDE8B: ff_filter_frame_to_filter (avfilter.c:1232)
 ==20368==    by 0x2BDE8B: ff_filter_activate_default (avfilter.c:1281)
 ==20368==    by 0x2BDE8B: ff_filter_activate (avfilter.c:1442)
 ==20368==    by 0x2C2747: push_frame (buffersrc.c:187)
 ==20368==    by 0x2C2747: av_buffersrc_add_frame_internal
 (buffersrc.c:261)
 ==20368==    by 0x2C2747: av_buffersrc_add_frame_flags (buffersrc.c:170)
 ==20368==    by 0x295AAC: ifilter_send_frame (ffmpeg.c:2187)
 ==20368==    by 0x295AAC: send_frame_to_filters (ffmpeg.c:2261)
 ==20368==    by 0x295D98: decode_audio (ffmpeg.c:2328)
 ==20368==
 ==20368== LEAK SUMMARY:
 ==20368==    definitely lost: 17,152 bytes in 32 blocks
 ==20368==    indirectly lost: 269,656 bytes in 129 blocks
 ==20368==      possibly lost: 0 bytes in 0 blocks
 ==20368==    still reachable: 0 bytes in 0 blocks
 ==20368==         suppressed: 0 bytes in 0 blocks
 ==20368==
 ==20368== For counts of detected and suppressed errors, rerun with: -v
 ==20368== ERROR SUMMARY: 1 errors from 1 contexts (suppressed: 0 from 0)

 }}}
 Please confirm.
 Thanks

--
Ticket URL: <https://trac.ffmpeg.org/ticket/8336>
FFmpeg <https://ffmpeg.org>
FFmpeg issue tracker


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