[FFmpeg-trac] #7835(undetermined:new): crashes using crop with zscale

FFmpeg trac at avcodec.org
Fri Apr 12 15:07:15 EEST 2019


#7835: crashes using crop with zscale
-------------------------------------+-------------------------------------
             Reporter:  nicol        |                    Owner:
                 Type:  defect       |                   Status:  new
             Priority:  normal       |                Component:
                                     |  undetermined
              Version:  git-master   |               Resolution:
             Keywords:               |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------

Comment (by nicol):

 I tried windows 7, 8.1, 10, and WLS on ubuntu. Windows 7(64bit),
 8.1(32bit) are crash, but Windows 10(64bit), and WLS on ubuntu dose not
 crash.
 Using this gdb 64bit. http://www.equation.com/servlet/equation.cmd?fa=gdb

 ffmpeg.exe -f lavfi -i testsrc2=s=640x360 -vf
 crop=320:180:16:0,zscale=160:-2 -vframes 1 -f null -
 [New Thread 4092.0x484]
 ffmpeg version N-93543-gbb5efd1727 Copyright (c) 2000-2019 the FFmpeg
 developers

   built with gcc 8.3.0 (Rev2, Built by MSYS2 project)
   configuration:  --disable-autodetect --enable-debug --enable-libzimg
 --enable-schannel --enable-gpl --disable-stripping
   libavutil      56. 26.100 / 56. 26.100
   libavcodec     58. 48.101 / 58. 48.101
   libavformat    58. 27.100 / 58. 27.100
   libavdevice    58.  7.100 / 58.  7.100
   libavfilter     7. 48.100 /  7. 48.100
   libswscale      5.  4.100 /  5.  4.100
   libswresample   3.  4.100 /  3.  4.100
   libpostproc    55.  4.100 / 55.  4.100
 [New Thread 4092.0x19cc]
 [New Thread 4092.0x11d0]
 [New Thread 4092.0x9e4]
 [New Thread 4092.0x1c38]
 Input #0, lavfi, from 'testsrc2=s=640x360':
   Duration: N/A, start: 0.000000, bitrate: N/A
     Stream #0:0: Video: rawvideo (I420 / 0x30323449), yuv420p, 640x360
 [SAR 1:1 DAR 16:9], 25 tbr, 25 tbn, 25 tbc
 Stream mapping:
   Stream #0:0 -> #0:0 (rawvideo (native) -> wrapped_avframe (native))
 Press [q] to stop, [?] for help
 [New Thread 4092.0xbb4]
 [New Thread 4092.0x16e0]
 [New Thread 4092.0x1b70]
 [New Thread 4092.0x19e0]

 Program received signal SIGSEGV, Segmentation fault.
 0x0000000140d64a16 in zimg::depth::left_shift_b2w_sse2(void const*, void*,
 unsigned int, unsigned int, unsigned int) ()

--
Ticket URL: <https://trac.ffmpeg.org/ticket/7835#comment:2>
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