[FFmpeg-trac] #9254(undetermined:new): sws_scale() writes out of buffer on ssse3 YUV420P->BGRA conversion

[FFmpeg]

#9254: sws_scale() writes out of buffer on ssse3 YUV420P->BGRA conversion
-------------------------------------+-------------------------------------
             Reporter:  Sergei       |                    Owner:  (none)
  Trofimovich                        |
                 Type:  defect       |                   Status:  new
             Priority:  normal       |                Component:
                                     |  undetermined
              Version:  unspecified  |               Resolution:
             Keywords:               |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------
Comment (by bmegli):

 I am getting similar crash in n4.4 source build
 - with YUV420P -> RGB24 color conversion, 1932x1096 resolution
 - FWIW, the input from H264 decoder has padding (e.g. linesize[0] == 2048)

 A quick workaround is to add some padding to output buffer.

 AV_INPUT_BUFFER_PADDING_SIZE seems to work but whether it is safe would
 require diving into code.
-- 
Ticket URL: <https://trac.ffmpeg.org/ticket/9254#comment:2>
FFmpeg <https://ffmpeg.org>
FFmpeg issue tracker