[FFmpeg-trac] #8267(undetermined:new): memory leaks from libavfilter/graphparser.c in link_filter_inouts

[FFmpeg]

#8267: memory leaks from libavfilter/graphparser.c in link_filter_inouts
-------------------------------------+-------------------------------------
             Reporter:  Suhwan       |                     Type:  defect
               Status:  new          |                 Priority:  normal
            Component:               |                  Version:  git-
  undetermined                       |  master
             Keywords:  valgrind     |               Blocked By:
  asan                               |
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------
 Summary of the bug:
 There're memory leaks from libavfilter/graphparser.c in link_filter_inouts

 How to reproduce:
 {{{
 % ffmpeg_g -y -i $PoC -filter_complex rgbtestsrc -loglevel 0 tmp.mpegtsraw

 ffmpeg version N-95336-g4f4334bcbc 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

 {{{
 ==30745== HEAP SUMMARY:
 ==30745==     in use at exit: 612 bytes in 16 blocks
 ==30745==   total heap usage: 389 allocs, 373 frees, 2,471,014 bytes
 allocated
 ==30745==
 ==30745== 32 bytes in 1 blocks are definitely lost in loss record 11 of 15
 ==30745==    at 0x9D40E76: memalign (in /usr/lib/valgrind
 /vgpreload_memcheck-amd64-linux.so)
 ==30745==    by 0x9D40F91: posix_memalign (in /usr/lib/valgrind
 /vgpreload_memcheck-amd64-linux.so)
 ==30745==    by 0x5911E09: av_malloc (mem.c:87)
 ==30745==    by 0x5911E09: av_mallocz (mem.c:238)
 ==30745==    by 0x65F62E: link_filter_inouts (graphparser.c:285)
 ==30745==    by 0x65DEFC: avfilter_graph_parse2 (graphparser.c:431)
 ==30745==    by 0x4615D4: init_complex_filtergraph (ffmpeg_filter.c:353)
 ==30745==    by 0x42DB4B: init_complex_filters (ffmpeg_opt.c:2102)
 ==30745==    by 0x42DB4B: ffmpeg_parse_options (ffmpeg_opt.c:3324)
 ==30745==    by 0x487B43: main (ffmpeg.c:4862)
 ==30745==
 ==30745== LEAK SUMMARY:
 ==30745==    definitely lost: 32 bytes in 1 blocks
 ==30745==    indirectly lost: 0 bytes in 0 blocks
 ==30745==      possibly lost: 0 bytes in 0 blocks
 ==30745==    still reachable: 580 bytes in 15 blocks
 ==30745==         suppressed: 0 bytes in 0 blocks
 ==30745== Reachable blocks (those to which a pointer was found) are not
 shown.
 ==30745== To see them, rerun with: --leak-check=full --show-leak-kinds=all
 ==30745==
 ==30745== For counts of detected and suppressed errors, rerun with: -v
 ==30745== ERROR SUMMARY: 1 errors from 1 contexts (suppressed: 0 from 0)

 }}}

 ASAN
 {{{
 =================================================================
 ==15214==ERROR: LeakSanitizer: detected memory leaks

 Direct leak of 32 byte(s) in 1 object(s) allocated from:
     #0 0x4de9e8 in posix_memalign (ffmpeg_asan+0x4de9e8)
     #1 0x8599368 in av_malloc ffmpeg/libavutil/mem.c:87:9
     #2 0x8599368 in av_mallocz ffmpeg/libavutil/mem.c:238
     #3 0x9397d2 in link_filter_inouts
 ffmpeg/libavfilter/graphparser.c:285:36
     #4 0x93620d in avfilter_graph_parse2
 ffmpeg/libavfilter/graphparser.c:431:20
     #5 0x5850b4 in init_complex_filtergraph
 ffmpeg/fftools/ffmpeg_filter.c:353:11
     #6 0x516995 in init_complex_filters
 ffmpeg/fftools/ffmpeg_opt.c:2102:15
     #7 0x516995 in ffmpeg_parse_options ffmpeg/fftools/ffmpeg_opt.c:3324
     #8 0x5db156 in main ffmpeg/fftools/ffmpeg.c:4862:11
     #9 0x7f6e24c9cb96 in __libc_start_main /build/glibc-
 OTsEL5/glibc-2.27/csu/../csu/libc-start.c:310

 SUMMARY: AddressSanitizer: 32 byte(s) leaked in 1 allocation(s).

 }}}
 Please confirm.
 Thanks

--
Ticket URL: <https://trac.ffmpeg.org/ticket/8267>
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