Ticket #8249: gdb-vf_signalstats_634

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Copyright (C) 2018 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
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Reading symbols from ../ffmpeg/ffmpeg_g...r
done.
(gdb) r
Starting program: ffmpeg/ffmpeg_g -t 1 -stream_loop 7 -y -r 120 -i samples/jpg/data.jpg -filter_complex signalstats -target dvd -loglevel 99 -c:a:112 y41p -c:v:143 vorbis -disposition:s:2 pcm_s8_planar -disposition:v:61 prores_aw -r 44 -ab 633k -strict 3 output/tmp.aac
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
ffmpeg version N-95314-g1331e00179 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-asan
  libavutil      56. 35.100 / 56. 35.100
  libavcodec     58. 59.102 / 58. 59.102
  libavformat    58. 33.100 / 58. 33.100
  libavdevice    58.  9.100 / 58.  9.100
  libavfilter     7. 62.100 /  7. 62.100
  libswscale      5.  6.100 /  5.  6.100
  libswresample   3.  6.100 /  3.  6.100
Splitting the commandline.
Reading option '-t' ... matched as option 't' (record or transcode "duration" seconds of audio/video) with argument '1'.
Reading option '-stream_loop' ... matched as option 'stream_loop' (set number of times input stream shall be looped) with argument '7'.
Reading option '-y' ... matched as option 'y' (overwrite output files) with argument '1'.
Reading option '-r' ... matched as option 'r' (set frame rate (Hz value, fraction or abbreviation)) with argument '120'.
Reading option '-i' ... matched as input url with argument 'samples/jpg/data.jpg'.
Reading option '-filter_complex' ... matched as option 'filter_complex' (create a complex filtergraph) with argument 'signalstats'.
Reading option '-target' ... matched as option 'target' (specify target file type ("vcd", "svcd", "dvd", "dv" or "dv50" with optional prefixes "pal-", "ntsc-" or "film-")) with argument 'dvd'.
Reading option '-loglevel' ... matched as option 'loglevel' (set logging level) with argument '99'.
Reading option '-c:a:112' ... matched as option 'c' (codec name) with argument 'y41p'.
Reading option '-c:v:143' ... matched as option 'c' (codec name) with argument 'vorbis'.
Reading option '-disposition:s:2' ... matched as option 'disposition' (disposition) with argument 'pcm_s8_planar'.
Reading option '-disposition:v:61' ... matched as option 'disposition' (disposition) with argument 'prores_aw'.
Reading option '-r' ... matched as option 'r' (set frame rate (Hz value, fraction or abbreviation)) with argument '44'.
Reading option '-ab' ... matched as option 'ab' (audio bitrate (please use -b:a)) with argument '633k'.
Reading option '-strict' ...Routing option strict to both codec and muxer layer
 matched as AVOption 'strict' with argument '3'.
Reading option 'output/tmp.aac' ... matched as output url.
Finished splitting the commandline.
Parsing a group of options: global .
Applying option y (overwrite output files) with argument 1.
Applying option filter_complex (create a complex filtergraph) with argument signalstats.
Applying option loglevel (set logging level) with argument 99.
Successfully parsed a group of options.
Parsing a group of options: input url samples/jpg/data.jpg.
Applying option t (record or transcode "duration" seconds of audio/video) with argument 1.
Applying option stream_loop (set number of times input stream shall be looped) with argument 7.
Applying option r (set frame rate (Hz value, fraction or abbreviation)) with argument 120.
Successfully parsed a group of options.
Opening an input file: samples/jpg/data.jpg.
[NULL @ 0x61b000000080] Opening 'samples/jpg/data.jpg' for reading
[file @ 0x610000000040] Setting default whitelist 'file,crypto'
Probing image2 score:50 size:2048
Probing jpeg_pipe score:25 size:2048
[image2 @ 0x61b000000080] Format image2 probed with size=2048 and score=50
[image2 @ 0x61b000000080] Before avformat_find_stream_info() pos: 0 bytes read:32768 seeks:0 nb_streams:1
[mjpeg @ 0x619000000580] marker=d8 avail_size_in_buf=138052
[mjpeg @ 0x619000000580] marker parser used 0 bytes (0 bits)
[mjpeg @ 0x619000000580] marker=e0 avail_size_in_buf=138050
[mjpeg @ 0x619000000580] marker parser used 16 bytes (128 bits)
[mjpeg @ 0x619000000580] marker=ec avail_size_in_buf=138032
[mjpeg @ 0x619000000580] marker parser used 16 bytes (128 bits)
[mjpeg @ 0x619000000580] marker=ee avail_size_in_buf=138013
[mjpeg @ 0x619000000580] marker parser used 14 bytes (112 bits)
[mjpeg @ 0x619000000580] marker=db avail_size_in_buf=137997
[mjpeg @ 0x619000000580] index=0
[mjpeg @ 0x619000000580] qscale[0]: 1
[mjpeg @ 0x619000000580] index=1
[mjpeg @ 0x619000000580] qscale[1]: 3
[mjpeg @ 0x619000000580] marker parser used 132 bytes (1056 bits)
[mjpeg @ 0x619000000580] marker=c0 avail_size_in_buf=137863
[mjpeg @ 0x619000000580] Changing bps from 0 to 8
[mjpeg @ 0x619000000580] sof0: picture: 776x315
[mjpeg @ 0x619000000580] component 0 1:1 id: 0 quant:0
[mjpeg @ 0x619000000580] component 1 1:1 id: 1 quant:1
[mjpeg @ 0x619000000580] component 2 1:1 id: 2 quant:1
[mjpeg @ 0x619000000580] pix fmt id 11111100
[mjpeg @ 0x619000000580] Format yuvj444p chosen by get_format().
[mjpeg @ 0x619000000580] marker parser used 17 bytes (136 bits)
[mjpeg @ 0x619000000580] marker=c4 avail_size_in_buf=137844
[mjpeg @ 0x619000000580] marker parser used 0 bytes (0 bits)
[mjpeg @ 0x619000000580] escaping removed 380 bytes
[mjpeg @ 0x619000000580] marker=da avail_size_in_buf=137638
[mjpeg @ 0x619000000580] marker parser used 137258 bytes (1098064 bits)
[mjpeg @ 0x619000000580] marker=d9 avail_size_in_buf=0
[mjpeg @ 0x619000000580] decode frame unused 0 bytes
[image2 @ 0x61b000000080] stream 0: start_time: 0.000 duration: 0.040
[image2 @ 0x61b000000080] format: start_time: 0.000 duration: 0.040 (estimate from stream) bitrate=27610 kb/s
[image2 @ 0x61b000000080] After avformat_find_stream_info() pos: 138054 bytes read:138054 seeks:0 frames:1
Input #0, image2, from 'samples/jpg/data.jpg':
  Duration: 00:00:00.04, start: 0.000000, bitrate: 27610 kb/s
    Stream #0:0, 1, 1/25: Video: mjpeg (Baseline), 1 reference frame, yuvj444p(pc, bt470bg/unknown/unknown, center), 776x315 [SAR 100:100 DAR 776:315], 0/1, 25 tbr, 25 tbn, 25 tbc
Successfully opened the file.
Parsing a group of options: output url output/tmp.aac.
Applying option target (specify target file type ("vcd", "svcd", "dvd", "dv" or "dv50" with optional prefixes "pal-", "ntsc-" or "film-")) with argument dvd.
Assuming PAL for target.
Applying option c:a:112 (codec name) with argument y41p.
Applying option c:v:143 (codec name) with argument vorbis.
Applying option disposition:s:2 (disposition) with argument pcm_s8_planar.
Applying option disposition:v:61 (disposition) with argument prores_aw.
Applying option r (set frame rate (Hz value, fraction or abbreviation)) with argument 44.
Applying option ab (audio bitrate (please use -b:a)) with argument 633k.
Successfully parsed a group of options.
Opening an output file: output/tmp.aac.
[file @ 0x610000000840] Setting default whitelist 'file,crypto'
Successfully opened the file.
Stream mapping:
  Stream #0:0 (mjpeg) -> signalstats
  signalstats -> Stream #0:0 (mpeg2video)
Press [q] to stop, [?] for help
cur_dts is invalid st:0 (0) [init:0 i_done:0 finish:0] (this is harmless if it occurs once at the start per stream)
[mjpeg @ 0x619000000a80] marker=d8 avail_size_in_buf=138052
[mjpeg @ 0x619000000a80] marker parser used 0 bytes (0 bits)
[mjpeg @ 0x619000000a80] marker=e0 avail_size_in_buf=138050
[mjpeg @ 0x619000000a80] marker parser used 16 bytes (128 bits)
[mjpeg @ 0x619000000a80] marker=ec avail_size_in_buf=138032
[mjpeg @ 0x619000000a80] marker parser used 16 bytes (128 bits)
[mjpeg @ 0x619000000a80] marker=ee avail_size_in_buf=138013
[mjpeg @ 0x619000000a80] marker parser used 14 bytes (112 bits)
[mjpeg @ 0x619000000a80] marker=db avail_size_in_buf=137997
[mjpeg @ 0x619000000a80] index=0
[mjpeg @ 0x619000000a80] qscale[0]: 1
[mjpeg @ 0x619000000a80] index=1
[mjpeg @ 0x619000000a80] qscale[1]: 3
[mjpeg @ 0x619000000a80] marker parser used 132 bytes (1056 bits)
[mjpeg @ 0x619000000a80] marker=c0 avail_size_in_buf=137863
[mjpeg @ 0x619000000a80] sof0: picture: 776x315
[mjpeg @ 0x619000000a80] component 0 1:1 id: 0 quant:0
[mjpeg @ 0x619000000a80] component 1 1:1 id: 1 quant:1
[mjpeg @ 0x619000000a80] component 2 1:1 id: 2 quant:1
[mjpeg @ 0x619000000a80] pix fmt id 11111100
[mjpeg @ 0x619000000a80] Format yuvj444p chosen by get_format().
[mjpeg @ 0x619000000a80] marker parser used 17 bytes (136 bits)
[mjpeg @ 0x619000000a80] marker=c4 avail_size_in_buf=137844
[mjpeg @ 0x619000000a80] class=0 index=0 nb_codes=10
[mjpeg @ 0x619000000a80] class=0 index=1 nb_codes=9
[mjpeg @ 0x619000000a80] class=1 index=0 nb_codes=242
[mjpeg @ 0x619000000a80] class=1 index=1 nb_codes=243
[mjpeg @ 0x619000000a80] marker parser used 204 bytes (1632 bits)
[mjpeg @ 0x619000000a80] escaping removed 380 bytes
[mjpeg @ 0x619000000a80] marker=da avail_size_in_buf=137638
[mjpeg @ 0x619000000a80] component: 0
[mjpeg @ 0x619000000a80] component: 1
[mjpeg @ 0x619000000a80] component: 2
[mjpeg @ 0x619000000a80] marker parser used 137257 bytes (1098050 bits)
[mjpeg @ 0x619000000a80] marker=d9 avail_size_in_buf=0
[mjpeg @ 0x619000000a80] decode frame unused 0 bytes
detected 48 logical cores
[New Thread 0x7ffff172d700 (LWP 15140)]
[New Thread 0x7ffff0f2c700 (LWP 15144)]
[New Thread 0x7ffff072b700 (LWP 15146)]
[New Thread 0x7fffeff2a700 (LWP 15148)]
[New Thread 0x7fffef729700 (LWP 15150)]
[New Thread 0x7fffeef28700 (LWP 15158)]
[New Thread 0x7fffee727700 (LWP 15166)]
[New Thread 0x7fffedf26700 (LWP 15175)]
[New Thread 0x7fffed725700 (LWP 15181)]
[New Thread 0x7fffecf24700 (LWP 15184)]
[New Thread 0x7fffec723700 (LWP 15187)]
[New Thread 0x7fffebf22700 (LWP 15189)]
[New Thread 0x7fffeb721700 (LWP 15192)]
[New Thread 0x7fffeaf20700 (LWP 15194)]
[New Thread 0x7fffea71f700 (LWP 15199)]
[New Thread 0x7fffe9f08700 (LWP 15202)]
[New Thread 0x7fffe96f1700 (LWP 15206)]
[New Thread 0x7fffe8eda700 (LWP 15208)]
[New Thread 0x7fffe86c3700 (LWP 15211)]
[New Thread 0x7fffe7eac700 (LWP 15215)]
[New Thread 0x7fffe7695700 (LWP 15216)]
[New Thread 0x7fffe6e7e700 (LWP 15218)]
[New Thread 0x7fffe6667700 (LWP 15223)]
[New Thread 0x7fffe5e50700 (LWP 15228)]
[New Thread 0x7fffe5639700 (LWP 15231)]
[New Thread 0x7fffe4e22700 (LWP 15233)]
[New Thread 0x7fffe460b700 (LWP 15235)]
[New Thread 0x7fffe3df4700 (LWP 15237)]
[New Thread 0x7fffe35dd700 (LWP 15239)]
[New Thread 0x7fffe2dc6700 (LWP 15241)]
[New Thread 0x7fffe25af700 (LWP 15246)]
[New Thread 0x7fffe1d98700 (LWP 15249)]
[New Thread 0x7fffe1581700 (LWP 15253)]
[New Thread 0x7fffe0d6a700 (LWP 15260)]
[New Thread 0x7fffe0553700 (LWP 15266)]
[New Thread 0x7fffdfd3c700 (LWP 15268)]
[New Thread 0x7fffdf525700 (LWP 15274)]
[New Thread 0x7fffded0e700 (LWP 15278)]
[New Thread 0x7fffde4f7700 (LWP 15283)]
[New Thread 0x7fffddce0700 (LWP 15285)]
[New Thread 0x7fffdd4c9700 (LWP 15288)]
[New Thread 0x7fffdccb2700 (LWP 15289)]
[New Thread 0x7fffdc49b700 (LWP 15291)]
[New Thread 0x7fffdbc84700 (LWP 15294)]
[New Thread 0x7fffdb46d700 (LWP 15296)]
[New Thread 0x7fffdac56700 (LWP 15298)]
[New Thread 0x7fffda43f700 (LWP 15305)]
[New Thread 0x7fffd9c28700 (LWP 15306)]
[graph 0 input from stream 0:0 @ 0x611000001300] Setting 'video_size' to value '776x315'
[graph 0 input from stream 0:0 @ 0x611000001300] Setting 'pix_fmt' to value '14'
[graph 0 input from stream 0:0 @ 0x611000001300] Setting 'time_base' to value '1/120'
[graph 0 input from stream 0:0 @ 0x611000001300] Setting 'pixel_aspect' to value '100/100'
[graph 0 input from stream 0:0 @ 0x611000001300] Setting 'sws_param' to value 'flags=2'
[graph 0 input from stream 0:0 @ 0x611000001300] Setting 'frame_rate' to value '120/1'
[graph 0 input from stream 0:0 @ 0x611000001300] w:776 h:315 pixfmt:yuvj444p tb:1/120 fr:120/1 sar:100/100 sws_param:flags=2
[scaler_out_0_0 @ 0x6110000016c0] Setting 'w' to value '720'
[scaler_out_0_0 @ 0x6110000016c0] Setting 'h' to value '576'
[scaler_out_0_0 @ 0x6110000016c0] Setting 'flags' to value 'bicubic'
[scaler_out_0_0 @ 0x6110000016c0] w:720 h:576 flags:'bicubic' interl:0
[format @ 0x611000001940] Setting 'pix_fmts' to value 'yuv420p'
[AVFilterGraph @ 0x60e000001540] query_formats: 6 queried, 5 merged, 0 already done, 0 delayed
[swscaler @ 0x62f000000400] deprecated pixel format used, make sure you did set range correctly
[scaler_out_0_0 @ 0x6110000016c0] w:776 h:315 fmt:yuvj444p sar:100/100 -> w:720 h:576 fmt:yuv420p sar:3104/1575 flags:0x4
=================================================================
==14934==ERROR: AddressSanitizer: stack-buffer-overflow on address 0x7fffffffa020 at pc 0x000001294ae2 bp 0x7fffffff8c10 sp 0x7fffffff8c08
READ of size 4 at 0x7fffffffa020 thread T0
    #0 0x1294ae1 in filter_frame8 ffmpeg/libavfilter/vf_signalstats.c:634:42
    #1 0x827289 in ff_filter_activate_default ffmpeg/libavfilter/avfilter.c:1071:11
    #2 0x827289 in ff_filter_activate ffmpeg/libavfilter/avfilter.c:1430
    #3 0x870182 in push_frame ffmpeg/libavfilter/buffersrc.c:187:15
    #4 0x870182 in av_buffersrc_add_frame_internal ffmpeg/libavfilter/buffersrc.c:261
    #5 0x86ebc2 in av_buffersrc_add_frame_flags ffmpeg/libavfilter/buffersrc.c:170:16
    #6 0x666867 in ifilter_send_frame ffmpeg/fftools/ffmpeg.c:2196:11
    #7 0x666867 in send_frame_to_filters ffmpeg/fftools/ffmpeg.c:2270
    #8 0x6075f7 in decode_video ffmpeg/fftools/ffmpeg.c:2469:11
    #9 0x6075f7 in process_input_packet ffmpeg/fftools/ffmpeg.c:2623
    #10 0x64ab67 in process_input ffmpeg/fftools/ffmpeg.c:4518:5
    #11 0x5e7157 in transcode_step ffmpeg/fftools/ffmpeg.c:4638:11
    #12 0x5e7157 in transcode ffmpeg/fftools/ffmpeg.c:4692
    #13 0x5db65b in main ffmpeg/fftools/ffmpeg.c:4894:9
    #14 0x7ffff5c93b96 in __libc_start_main /build/glibc-OTsEL5/glibc-2.27/csu/../csu/libc-start.c:310
    #15 0x41def9 in _start (ffmpeg/ffmpeg_g+0x41def9)

Address 0x7fffffffa020 is located in stack of thread T0 at offset 5120 in frame
    #0 0x128d7ef in filter_frame8 ffmpeg/libavfilter/vf_signalstats.c:550

  This frame has 11 object(s):
    [32, 40) 'in.addr'
    [64, 192) 'metabuf' (line 559)
    [224, 1248) 'histy' (line 560)
    [1376, 2400) 'histu' (line 560)
    [2528, 3552) 'histv' (line 560)
    [3680, 5120) 'histhue' (line 560) <== Memory access at offset 5120 overflows this variable
    [5248, 6272) 'histsat' (line 560)
    [6400, 6412) 'filtot' (line 579)
    [6432, 6456) 'td_huesat' (line 588)
    [6496, 6512) 'td' (line 644)
    [6528, 6656) 'metaname' (line 755)
HINT: this may be a false positive if your program uses some custom stack unwind mechanism or swapcontext
      (longjmp and C++ exceptions *are* supported)
SUMMARY: AddressSanitizer: stack-buffer-overflow ffmpeg/libavfilter/vf_signalstats.c:634:42 in filter_frame8
Shadow bytes around the buggy address:
  0x10007fff73b0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  0x10007fff73c0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  0x10007fff73d0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  0x10007fff73e0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  0x10007fff73f0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
=>0x10007fff7400: 00 00 00 00[f2]f2 f2 f2 f2 f2 f2 f2 f2 f2 f2 f2
  0x10007fff7410: f2 f2 f2 f2 00 00 00 00 00 00 00 00 00 00 00 00
  0x10007fff7420: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  0x10007fff7430: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  0x10007fff7440: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  0x10007fff7450: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Shadow byte legend (one shadow byte represents 8 application bytes):
  Addressable:           00
  Partially addressable: 01 02 03 04 05 06 07 
  Heap left redzone:       fa
  Freed heap region:       fd
  Stack left redzone:      f1
  Stack mid redzone:       f2
  Stack right redzone:     f3
  Stack after return:      f5
  Stack use after scope:   f8
  Global redzone:          f9
  Global init order:       f6
  Poisoned by user:        f7
  Container overflow:      fc
  Array cookie:            ac
  Intra object redzone:    bb
  ASan internal:           fe
  Left alloca redzone:     ca
  Right alloca redzone:    cb
==14934==ABORTING
[Thread 0x7fffd9c28700 (LWP 15306) exited]
[Thread 0x7fffda43f700 (LWP 15305) exited]
[Thread 0x7fffdac56700 (LWP 15298) exited]
[Thread 0x7fffdb46d700 (LWP 15296) exited]
[Thread 0x7fffdbc84700 (LWP 15294) exited]
[Thread 0x7fffdc49b700 (LWP 15291) exited]
[Thread 0x7fffdccb2700 (LWP 15289) exited]
[Thread 0x7fffdd4c9700 (LWP 15288) exited]
[Thread 0x7fffddce0700 (LWP 15285) exited]
[Thread 0x7fffde4f7700 (LWP 15283) exited]
[Thread 0x7fffdf525700 (LWP 15274) exited]
[Thread 0x7fffdfd3c700 (LWP 15268) exited]
[Thread 0x7fffe0553700 (LWP 15266) exited]
[Thread 0x7fffe0d6a700 (LWP 15260) exited]
[Thread 0x7fffe1581700 (LWP 15253) exited]
[Thread 0x7fffe1d98700 (LWP 15249) exited]
[Thread 0x7fffe25af700 (LWP 15246) exited]
[Thread 0x7fffe2dc6700 (LWP 15241) exited]
[Thread 0x7fffe35dd700 (LWP 15239) exited]
[Thread 0x7fffe3df4700 (LWP 15237) exited]
[Thread 0x7fffe460b700 (LWP 15235) exited]
[Thread 0x7fffe4e22700 (LWP 15233) exited]
[Thread 0x7fffe5639700 (LWP 15231) exited]
[Thread 0x7fffe5e50700 (LWP 15228) exited]
[Thread 0x7fffe6667700 (LWP 15223) exited]
[Thread 0x7fffe6e7e700 (LWP 15218) exited]
[Thread 0x7fffe7695700 (LWP 15216) exited]
[Thread 0x7fffe7eac700 (LWP 15215) exited]
[Thread 0x7fffe86c3700 (LWP 15211) exited]
[Thread 0x7fffe8eda700 (LWP 15208) exited]
[Thread 0x7fffe96f1700 (LWP 15206) exited]
[Thread 0x7fffe9f08700 (LWP 15202) exited]
[Thread 0x7fffea71f700 (LWP 15199) exited]
[Thread 0x7fffeaf20700 (LWP 15194) exited]
[Thread 0x7fffeb721700 (LWP 15192) exited]
[Thread 0x7fffebf22700 (LWP 15189) exited]
[Thread 0x7fffec723700 (LWP 15187) exited]
[Thread 0x7fffecf24700 (LWP 15184) exited]
[Thread 0x7fffed725700 (LWP 15181) exited]
[Thread 0x7fffedf26700 (LWP 15175) exited]
[Thread 0x7fffee727700 (LWP 15166) exited]
[Thread 0x7fffeef28700 (LWP 15158) exited]
[Thread 0x7fffef729700 (LWP 15150) exited]
[Thread 0x7fffeff2a700 (LWP 15148) exited]
[Thread 0x7ffff072b700 (LWP 15146) exited]
[Thread 0x7ffff0f2c700 (LWP 15144) exited]
[Thread 0x7ffff172d700 (LWP 15140) exited]
[Thread 0x7ffff7fb6780 (LWP 14934) exited]
[Inferior 1 (process 14934) exited with code 01]