[FFmpeg-trac] #10758(avfilter:new): floating point exception(FPE) bug at libavfilter/vf_minterpolate.c:1078:60 in interpolate in FFmpeg

[FFmpeg]

#10758: floating point exception(FPE) bug at libavfilter/vf_minterpolate.c:1078:60
in interpolate in FFmpeg
-------------------------------------+-------------------------------------
             Reporter:               |                     Type:  defect
  ZengYunxiang                       |
               Status:  new          |                 Priority:  important
            Component:  avfilter     |                  Version:  6.1
             Keywords:  bugs         |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------
 Summary of the bug:

 Dear developers,

 We found the following FPE bug on FFmpeg(version N-113007-g8d24a28d06)
 when using minterpolate filter, please confirm.

 The poc file(poc20ffmpeg) will be attached to this ticket.

 How to reproduce:
 {{{
 git clone https://github.com/FFmpeg/FFmpeg.git ffmpeg
 cd ffmpeg
 ./configure --cc=clang --cxx=clang++ --ld=clang --enable-debug --toolchain
 =clang-asan
 make -j30

 ./ffmpeg_g -y -i poc20ffmpeg -filter_complex minterpolate tmp.mp4
 }}}
 ASAN Log:
 {{{
 AddressSanitizer:DEADLYSIGNALimes
 =================================================================
 ==4079687==ERROR: AddressSanitizer: FPE on unknown address 0x564ae24d51ae
 (pc 0x564ae24d51ae bp 0x7f7decd794b0 sp 0x7f7decd79120 T19)
     #0 0x564ae24d51ae in interpolate
 /ffmpeg/libavfilter/vf_minterpolate.c:1078:60
     #1 0x564ae24d51ae in filter_frame
 /ffmpeg/libavfilter/vf_minterpolate.c:1191:9
     #2 0x564ae2132ed2 in ff_filter_frame_framed
 /ffmpeg/libavfilter/avfilter.c:969:11
     #3 0x564ae2132ed2 in ff_filter_frame_to_filter
 /ffmpeg/libavfilter/avfilter.c:1123:11
     #4 0x564ae2132ed2 in ff_filter_activate_default
 /ffmpeg/libavfilter/avfilter.c:1182:20
     #5 0x564ae2132ed2 in ff_filter_activate
 /ffmpeg/libavfilter/avfilter.c:1341:11
     #6 0x564ae2144f57 in push_frame /ffmpeg/libavfilter/buffersrc.c:168:15
     #7 0x564ae2144f57 in av_buffersrc_add_frame_flags
 /ffmpeg/libavfilter/buffersrc.c:272:15
     #8 0x564ae2032d3b in send_frame
 /ffmpeg/fftools/ffmpeg_filter.c:2668:11
     #9 0x564ae2032d3b in filter_thread
 /ffmpeg/fftools/ffmpeg_filter.c:2808:19
     #10 0x564ae2074c18 in task_wrapper
 /ffmpeg/fftools/ffmpeg_sched.c:2200:21
     #11 0x7f7df8e5dac2  (/lib/x86_64-linux-gnu/libc.so.6+0x94ac2)
 (BuildId: a43bfc8428df6623cd498c9c0caeb91aec9be4f9)
     #12 0x7f7df8eefa3f  (/lib/x86_64-linux-gnu/libc.so.6+0x126a3f)
 (BuildId: a43bfc8428df6623cd498c9c0caeb91aec9be4f9)

 AddressSanitizer can not provide additional info.
 SUMMARY: AddressSanitizer: FPE
 /ffmpeg/libavfilter/vf_minterpolate.c:1078:60 in interpolate
 Thread T19 (fc0) created by T0 here:
     #0 0x564ae1fc0f9c in __interceptor_pthread_create
 (/ffmpeg/ffmpeg_g+0x90cf9c) (BuildId:
 8d6ccf457a75d047d11f9627d0b67208c2215c8c)
     #1 0x564ae206f161 in task_start /ffmpeg/fftools/ffmpeg_sched.c:403:11
     #2 0x564ae208de68 in transcode /ffmpeg/fftools/ffmpeg.c:922:11
     #3 0x564ae208de68 in main /ffmpeg/fftools/ffmpeg.c:1050:11
     #4 0x7f7df8df2d8f  (/lib/x86_64-linux-gnu/libc.so.6+0x29d8f) (BuildId:
 a43bfc8428df6623cd498c9c0caeb91aec9be4f9)

 ==4079687==ABORTING
 }}}

 ffmpeg version:
 {{{
 # ./ffmpeg -version
 ffmpeg version N-113007-g8d24a28d06 Copyright (c) 2000-2023 the FFmpeg
 developers
 built with Ubuntu clang version 14.0.0-1ubuntu1.1
 configuration: --cc=clang --cxx=clang++ --ld=clang --enable-debug
 --toolchain=clang-asan
 libavutil      58. 34.100 / 58. 34.100
 libavcodec     60. 35.100 / 60. 35.100
 libavformat    60. 18.100 / 60. 18.100
 libavdevice    60.  4.100 / 60.  4.100
 libavfilter     9. 14.100 /  9. 14.100
 libswscale      7.  6.100 /  7.  6.100
 libswresample   4. 13.100 /  4. 13.100
 }}}
 Credit:
 {{{
 Discovered by Zeng Yunxiang.
 }}}
 Thanks for your time!
-- 
Ticket URL: <https://trac.ffmpeg.org/ticket/10758>
FFmpeg <https://ffmpeg.org>
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