[FFmpeg-trac] #313(undetermined:new): Invalid read in decode_cabac_residual_nondc_internal() when decoding corrupt H264 sample

[FFmpeg]

#313: Invalid read in decode_cabac_residual_nondc_internal() when decoding
corrupt H264 sample
-------------------------+--------------------------
  Reporter:  cehoyos     |      Owner:
      Type:  defect      |     Status:  new
  Priority:  normal      |  Component:  undetermined
   Version:  git-master  |   Keywords:  h264
Blocked By:              |   Blocking:
Reproduced:  0           |   Analyzed:  0
-------------------------+--------------------------
 {{{
 $ valgrind ./ffmpeg_g -i invalid_reads2.h264 -f null -
 ==24328== Memcheck, a memory error detector
 ==24328== Copyright (C) 2002-2009, and GNU GPL'd, by Julian Seward et al.
 ==24328== Using Valgrind-3.5.0 and LibVEX; rerun with -h for copyright
 info
 ==24328== Command: ./ffmpeg_g -i invalid_reads2.h264 -f null -
 ==24328==
 ffmpeg version N-31019-g5c13b5b, Copyright (c) 2000-2011 the FFmpeg
 developers
   built on Jun 26 2011 17:49:29 with gcc 4.5.3
   configuration: --cc='/usr/local/gcc-4.5.3/bin/gcc -m32'
   libavutil    51. 10. 0 / 51. 10. 0
   libavcodec   53.  7. 0 / 53.  7. 0
   libavformat  53.  4. 0 / 53.  4. 0
   libavdevice  53.  1. 1 / 53.  1. 1
   libavfilter   2. 23. 0 /  2. 23. 0
   libswscale    2.  0. 0 /  2.  0. 0
 [h264 @ 0xa44e320] non-existing PPS referenced
 [h264 @ 0xa44e320] non-existing PPS 0 referenced
 [h264 @ 0xa44e320] decode_slice_header error
 [h264 @ 0xa44e320] no frame!
 [h264 @ 0xa44e320] non-existing PPS referenced
 [h264 @ 0xa44e320] non-existing PPS 0 referenced
 [h264 @ 0xa44e320] decode_slice_header error
 [h264 @ 0xa44e320] no frame!

 ...

 [h264 @ 0xa44e320] non-existing PPS referenced
 [h264 @ 0xa44e320] non-existing PPS 0 referenced
 [h264 @ 0xa44e320] decode_slice_header error
 [h264 @ 0xa44e320] no frame!
 [h264 @ 0xa44e320] non-existing PPS referenced
 [h264 @ 0xa44e320] non-existing PPS 0 referenced
 [h264 @ 0xa44e320] decode_slice_header error
 [h264 @ 0xa44e320] no frame!
 [h264 @ 0xa44e320] top block unavailable for requested intra mode at 33 0
 [h264 @ 0xa44e320] error while decoding MB 33 0, bytestream (10457)
 [h264 @ 0xa44e320] mmco: unref short failure
 [h264 @ 0xa404680] Estimating duration from bitrate, this may be
 inaccurate

 Seems stream 0 codec frame rate differs from container frame rate: 59.94
 (60000/1001) -> 29.97 (60000/2002)
 Input #0, h264, from 'invalid_reads2.h264':
   Duration: N/A, bitrate: N/A
     Stream #0.0: Video: h264 (Main), yuv420p, 1920x1080 [PAR 1:1 DAR
 16:9], 50 fps, 29.97 tbr, 1200k tbn, 59.94 tbc
 [buffer @ 0xa534220] w:1920 h:1080 pixfmt:yuv420p tb:1/1000000 sar:1/1
 sws_param:
 Output #0, null, to 'pipe:':
   Metadata:
     encoder         : Lavf53.4.0
     Stream #0.0: Video: rawvideo, yuv420p, 1920x1080 [PAR 1:1 DAR 16:9],
 q=2-31, 200 kb/s, 90k tbn, 29.97 tbc
 Stream mapping:
   Stream #0.0 -> #0.0
 Press [q] to stop, [?] for help
 ==24328== Invalid read of size 2
 ==24328==    at 0x823C139: decode_cabac_residual_nondc_internal
 (cabac.h:115)
 ==24328==  Address 0xa51469c is 1,404 bytes inside a block of size 1,405
 alloc'd
 ==24328==    at 0x6449E9E: memalign (in
 /usr/lib64/valgrind/vgpreload_memcheck-x86-linux.so)
 ==24328==    by 0x6449EFB: posix_memalign (in
 /usr/lib64/valgrind/vgpreload_memcheck-x86-linux.so)
 ==24328==    by 0x85AE047: av_malloc (mem.c:90)
 ==24328==
 [h264 @ 0xa44e320] error while decoding MB 68 28, bytestream (-9)
 frame=    0 fps=  0 q=0.0 size=      -0kB time=00:00:00.00 bitrate=
 0.0kbits/s    ^M[h264 @ 0xa44e320] reference picture missing during
 reorder
 [h264 @ 0xa44e320] Missing reference picture
 [h264 @ 0xa44e320] Reference 3 >= 2
 [h264 @ 0xa44e320] error while decoding MB 0 23, bytestream (2065)
 [h264 @ 0xa44e320] illegal short term buffer state detected
 frame=    2 fps=  1 q=0.0 size=      -0kB time=00:00:00.06 bitrate=
 -2.6kbits/s    ^M[h264 @ 0xa44e320] top block unavailable for requested
 intra mode at 33 0
 [h264 @ 0xa44e320] error while decoding MB 33 0, bytestream (10457)
 frame=    4 fps=  2 q=0.0 Lsize=      -0kB time=00:00:00.13 bitrate=
 -1.3kbits/s dup=0 drop=1    ^M
 video:0kB audio:0kB global headers:0kB muxing overhead -inf%
 ==24328==
 ==24328== HEAP SUMMARY:
 ==24328==     in use at exit: 132 bytes in 1 blocks
 ==24328==   total heap usage: 486 allocs, 485 frees, 68,920,233 bytes
 allocated
 ==24328==
 ==24328== LEAK SUMMARY:
 ==24328==    definitely lost: 132 bytes in 1 blocks
 ==24328==    indirectly lost: 0 bytes in 0 blocks
 ==24328==      possibly lost: 0 bytes in 0 blocks
 ==24328==    still reachable: 0 bytes in 0 blocks
 ==24328==         suppressed: 0 bytes in 0 blocks
 ==24328== Rerun with --leak-check=full to see details of leaked memory
 ==24328==
 ==24328== For counts of detected and suppressed errors, rerun with: -v
 ==24328== ERROR SUMMARY: 1 errors from 1 contexts (suppressed: 3 from 3)
 }}}

-- 
Ticket URL: <https://avcodec.org/trac/ffmpeg/ticket/313>
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