Opened 9 years ago
Closed 9 years ago
#5130 closed defect (duplicate)
left shift of negative value in mc_chroma_unscaled()
Reported by: | tsmith | Owned by: | |
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Priority: | normal | Component: | avcodec |
Version: | git-master | Keywords: | |
Cc: | Blocked By: | ||
Blocking: | Reproduced by developer: | no | |
Analyzed by developer: | no |
Description
Summary of the bug:
UBSan: libavcodec/vp9.c:2758:44: runtime error: left shift of negative value -23
How to reproduce:
% ffmpeg -f ivf -i <test_case> -f null - ffmpeg version N-77718-g72673ad Copyright (c) 2000-2016 the FFmpeg developers built with Ubuntu clang version 3.7.1-svn253742-1~exp1 (branches/release_37) (based on LLVM 3.7.1) configuration: --cc=clang --cxx=clang++ --disable-libxcb --disable-xlib --disable-logging --disable-ffprobe --disable-ffplay --disable-sdl --disable-ffserver --disable-doc --disable-pthreads --disable-network --disable-d3d11va --disable-dxva2 --disable-vaapi --disable-vda --disable-vdpau --disable-stripping --disable-runtime-cpudetect --disable-securetransport --disable-iconv libavutil 55. 12.100 / 55. 12.100 libavcodec 57. 22.100 / 57. 22.100 libavformat 57. 21.101 / 57. 21.101 libavdevice 57. 0.100 / 57. 0.100 libavfilter 6. 23.100 / 6. 23.100 libswscale 4. 0.100 / 4. 0.100 libswresample 2. 0.101 / 2. 0.101 [vp9 @ 0x619000005a80] Warning: not compiled with thread support, using thread emulation Input #0, ivf, from '/home/user/Desktop/vpx/corpus/bb6b5274722c3805b0dc5a19d48291090d050f1f': Duration: 00:18:12.33, bitrate: N/A Stream #0:0: Video: vp9 (Profile 0) (VP90 / 0x30395056), yuv420p(tv), 320x240, 30 tbr, 30 tbn, 30 tbc [wrapped_avframe @ 0x619000003780] Warning: not compiled with thread support, using thread emulation [vp9 @ 0x619000004180] Warning: not compiled with thread support, using thread emulation Output #0, null, to 'pipe:': Metadata: encoder : Lavf57.21.101 Stream #0:0: Video: wrapped_avframe, yuv420p, 320x240, q=2-31, 200 kb/s, 30 fps, 30 tbn, 30 tbc Metadata: encoder : Lavc57.22.100 wrapped_avframe Stream mapping: Stream #0:0 -> #0:0 (vp9 (native) -> wrapped_avframe (native)) Press [q] to stop, [?] for help libavcodec/vp9.c:2758:44: runtime error: left shift of negative value -23 #0 0x1e09c53 in mc_chroma_unscaled /home/user/code/ffmpeg/libavcodec/vp9.c:2769:34 #1 0x1e09c53 in inter_pred_8bpp /home/user/code/ffmpeg/libavcodec/vp9_mc_template.c:427 #2 0x1ca28a7 in inter_recon /home/user/code/ffmpeg/libavcodec/vp9.c:2986:13 #3 0x1ca28a7 in inter_recon_8bpp /home/user/code/ffmpeg/libavcodec/vp9.c:3040 #4 0x1ca28a7 in decode_b /home/user/code/ffmpeg/libavcodec/vp9.c:3294 #5 0x1c901e5 in decode_sb /home/user/code/ffmpeg/libavcodec/vp9.c:3392:17 #6 0x1c75f55 in vp9_decode_frame /home/user/code/ffmpeg/libavcodec/vp9.c:4164:29 #7 0x1a3fc96 in avcodec_decode_video2 /home/user/code/ffmpeg/libavcodec/utils.c:2107:19 #8 0x589546 in decode_video /home/user/code/ffmpeg/ffmpeg.c:2069:11 #9 0x589546 in process_input_packet /home/user/code/ffmpeg/ffmpeg.c:2318 #10 0x5990bc in process_input /home/user/code/ffmpeg/ffmpeg.c:3980:5 #11 0x5726c6 in transcode_step /home/user/code/ffmpeg/ffmpeg.c:4068:11 #12 0x5726c6 in transcode /home/user/code/ffmpeg/ffmpeg.c:4122 #13 0x56f73c in main /home/user/code/ffmpeg/ffmpeg.c:4314:9 #14 0x7f30cf98eec4 in __libc_start_main /build/buildd/eglibc-2.19/csu/libc-start.c:287 #15 0x466445 in _start (/home/user/Desktop/ffmpeg/ffmpeg_full+0x466445)
Attachments (1)
Change History (2)
by , 9 years ago
Attachment: | test_case.vp9.ivf added |
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comment:1 by , 9 years ago
Resolution: | → duplicate |
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Status: | new → closed |
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Dup of 5127. Sorry.