[FFmpeg-trac] #1112(avcodec:open): tiff enc: invalid read with -vf vflip and -pix_fmt yuv420p (was: tiff enc: crash with -vf vflip and -pix_fmt yuv420p)

[FFmpeg]

#1112: tiff enc: invalid read with -vf vflip and -pix_fmt yuv420p
------------------------------------+-----------------------------------
             Reporter:  ami_stuff   |                    Owner:
                 Type:  defect      |                   Status:  open
             Priority:  normal      |                Component:  avcodec
              Version:  git-master  |               Resolution:
             Keywords:  tif         |               Blocked By:
             Blocking:              |  Reproduced by developer:  1
Analyzed by developer:  0           |
------------------------------------+-----------------------------------
Changes (by cehoyos):

 * status:  new => open
 * reproduced:  0 => 1
 * component:  undetermined => avcodec
 * version:  unspecified => git-master
 * keywords:   => tif


Comment:

 {{{
 $ valgrind ./ffmpeg_g -i tests/lena.pnm -vf vflip -pix_fmt yuv420p -s
 1111x1111 out.tif
 ffmpeg version N-38996-g3493390 Copyright (c) 2000-2012 the FFmpeg
 developers
   built on Mar 21 2012 18:23:24 with gcc 4.3.2
   configuration: --cc=/usr/local/gcc-4.3.2/bin/gcc --enable-gpl
   libavutil      51. 43.100 / 51. 43.100
   libavcodec     54. 12.100 / 54. 12.100
   libavformat    54.  2.100 / 54.  2.100
   libavdevice    53.  4.100 / 53.  4.100
   libavfilter     2. 65.102 /  2. 65.102
   libswscale      2.  1.100 /  2.  1.100
   libswresample   0.  7.100 /  0.  7.100
   libpostproc    52.  0.100 / 52.  0.100
 Input #0, image2, from 'tests/lena.pnm':
   Duration: 00:00:00.04, start: 0.000000, bitrate: N/A
     Stream #0:0: Video: ppm, rgb24, 256x256, 25 tbr, 25 tbn, 25 tbc
 [buffer @ 0x449b3c0] w:256 h:256 pixfmt:rgb24 tb:1/1000000 sar:0/1
 sws_param:
 [scale @ 0x449bcc0] w:256 h:256 fmt:rgb24 sar:0/1 -> w:1111 h:1111
 fmt:yuv420p sar:0/1 flags:0x4
 Output #0, image2, to 'out.tif':
   Metadata:
     encoder         : Lavf54.2.100
     Stream #0:0: Video: tiff, yuv420p, 1111x1111, q=2-31, 200 kb/s, 90k
 tbn, 25 tbc
 Stream mapping:
   Stream #0:0 -> #0:0 (ppm -> tiff)
 Press [q] to stop, [?] for help
 ==6125== Invalid read of size 1
 ==6125==    at 0x8555E13: encode_frame (tiffenc.c:198)
 ==6125==  Address 0x4704C00 is not stack'd, malloc'd or (recently) free'd
 frame=    1 fps=0.5 q=0.0 Lsize=       0kB time=00:00:00.04 bitrate=
 0.0kbits/s
 video:1767kB audio:0kB global headers:0kB muxing overhead -100.000000%
 ==6125==
 ==6125== ERROR SUMMARY: 1112 errors from 1 contexts (suppressed: 3 from 1)
 ==6125== malloc/free: in use at exit: 0 bytes in 0 blocks.
 ==6125== malloc/free: 742 allocs, 742 frees, 34,057,211 bytes allocated.
 ==6125== For counts of detected errors, rerun with: -v
 ==6125== All heap blocks were freed -- no leaks are possible.
 }}}

-- 
Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/1112#comment:1>
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