Opened 5 years ago
Closed 3 years ago
#8192 closed defect (fixed)
Division by zero bug from libavcodec/aacenc.c:903
Reported by: | Suhwan | Owned by: | |
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Priority: | normal | Component: | undetermined |
Version: | git-master | Keywords: | ubsan |
Cc: | Blocked By: | ||
Blocking: | Reproduced by developer: | no | |
Analyzed by developer: | no |
Description
Summary of the bug:
There is a Division by zero bug from libavcodec/aacenc.c:903
libavcodec/aacenc.c:903:62: runtime error: division by zero SUMMARY: UndefinedBehaviorSanitizer: undefined-behavior libavcodec/aacenc.c:903:62 in [aac @ 0x619000004180] Qavg: -nan 905 ff_mdct_end(&s->mdct1024); (gdb) bt #0 aac_encode_end (avctx=0x619000004180) at libavcodec/aacenc.c:905 #1 0x000000000509f9fa in avcodec_close (avctx=<optimized out>) at libavcodec/utils.c:1100 #2 0x00000000045d4688 in avcodec_free_context (pavctx=0x6160000045e0) at libavcodec/options.c:178 #3 0x00000000005df0e8 in ffmpeg_cleanup (ret=0) at fftools/ffmpeg.c:571 #4 0x00000000005afb95 in exit_program (ret=0) at fftools/cmdutils.c:139 #5 0x00000000005db973 in main (argc=<optimized out>, argv=<optimized out>) at fftools/ffmpeg.c:4911
How to reproduce:
% ./ffmpeg_g -y -r 106 -i mjpegb.mov -loglevel 0 -map 0 -c:v:117 mov_text -disposition:a:151 aptx -vframes 12 -aframes 23 -ab 418k -ar 22050 -strict 1 tmp.mov ffmpeg version N-94982-gea673a0edb 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 --toolchain=clang-usan
Attachments (2)
Change History (3)
by , 5 years ago
Attachment: | gdb-aacenc added |
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by , 5 years ago
Attachment: | mjpegb.mov added |
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comment:1 by , 3 years ago
Resolution: | → fixed |
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Status: | new → closed |
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