#8290 closed defect (fixed)
left shift of 9053289 by 8 places cannot be represented in type 'int32_t' at libavcodec/h264_mp4toannexb_bsf.c:205
Reported by: | Suhwan | Owned by: | |
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Priority: | normal | Component: | avcodec |
Version: | git-master | Keywords: | h264 ubsan |
Cc: | Blocked By: | ||
Blocking: | Reproduced by developer: | no | |
Analyzed by developer: | no |
Description
Summary of the bug:
There is a left shift of 9053289 by 8 places cannot be represented in type 'int32_t' at libavcodec/h264_mp4toannexb_bsf.c:205
I compiled ffmpeg with "--toolchain=clang-usan" to check the undefined-behaviours and attached log file.
How to reproduce:
% ffmpeg_g -y -i $PoC1 -i $PoC2 -target dvd -loglevel 0 -map 0 -vbsf h264_mp4toannexb -c copy tmp.adf ffmpeg version N-95399-g1a0c584abc 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
Here's UBSAN log
libavcodec/h264_mp4toannexb_bsf.c:205:34: runtime error: left shift of 9053289 by 8 places cannot be represented in type 'int32_t' (aka 'int') Thread 1 "ffmpeg_g" hit Breakpoint 1, 0x00000000004288b0 in __ubsan::ScopedReport::~ScopedReport() () (gdb) bt #0 0x00000000004288b0 in __ubsan::ScopedReport::~ScopedReport() () #1 0x000000000042a9a0 in handleShiftOutOfBoundsImpl(__ubsan::ShiftOutOfBoundsData*, unsigned long, unsigned long, __ubsan::ReportOptions) () #2 0x000000000042cb41 in __ubsan_handle_shift_out_of_bounds () #3 0x0000000002232d2e in h264_mp4toannexb_filter (ctx=0x93d7c00, out=0x7fffffffc700) at libavcodec/h264_mp4toannexb_bsf.c:205 #4 0x00000000004c7fb8 in output_packet (of=0x93d7480, pkt=0x7fffffffc700, ost=0x93d78c0, eof=<optimized out>) at fftools/ffmpeg.c:863 #5 0x00000000004a3f71 in do_streamcopy (ist=<optimized out>, ost=<optimized out>, pkt=<optimized out>) at fftools/ffmpeg.c:2066 #6 process_input_packet (ist=<optimized out>, pkt=<optimized out>, no_eof=<optimized out>) at fftools/ffmpeg.c:2736 #7 0x00000000004bf0f0 in process_input (file_index=<optimized out>) at fftools/ffmpeg.c:4508 #8 0x000000000048d5eb in transcode_step () at fftools/ffmpeg.c:4628 #9 transcode () at fftools/ffmpeg.c:4682 #10 0x0000000000487da4 in main (argc=17, argv=<optimized out>) at fftools/ffmpeg.c:4884
Please confirm.
Thanks
Attachments (2)
Change History (4)
by , 4 years ago
comment:1 by , 4 years ago
Resolution: | → fixed |
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Status: | new → closed |
Fixed in 824f750880b45fdb5659019c88d82ab2f55b9ca9.
comment:2 by , 4 years ago
Component: | undetermined → avcodec |
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Keywords: | h264 added |
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