[FFmpeg-trac] #223(avformat:new): fpe when reading mov file

[FFmpeg]

#223: fpe when reading mov file
-------------------------+----------------------
  Reporter:  cehoyos     |      Owner:
      Type:  defect      |     Status:  new
  Priority:  important   |  Component:  avformat
   Version:  git-master  |   Keywords:
Blocked By:              |   Blocking:
Reproduced:  1           |   Analyzed:  0
-------------------------+----------------------
 {{{
 (gdb) r -i crash.mp4
 ffmpeg version git-N-30023-g7e5cb2e, Copyright (c) 2000-2011 the FFmpeg
 developers
   built on May 19 2011 16:44:57 with gcc 4.5.3
   configuration: --enable-libopencv --cc=/usr/local/gcc-4.5.3/bin/gcc
 --enable-gpl
   libavutil    51.  2. 1 / 51.  2. 1
   libavcodec   53.  6. 0 / 53.  6. 0
   libavformat  53.  1. 0 / 53.  1. 0
   libavdevice  53.  0. 0 / 53.  0. 0
   libavfilter   2.  5. 0 /  2.  5. 0
   libswscale    0. 14. 0 /  0. 14. 0
   libpostproc  51.  2. 0 / 51.  2. 0

 Program received signal SIGFPE, Arithmetic exception.
 0x00000000004a2ded in mov_build_index (st=0x12af280, mov=<value optimized
 out>) at libavformat/mov.c:1530
 1530                sc->ctts_data[0].duration / sc->stts_data[0].duration
 > 16) {
 (gdb) bt
 #0  0x00000000004a2ded in mov_build_index (st=0x12af280, mov=<value
 optimized out>) at libavformat/mov.c:1530
 #1  mov_read_trak (st=0x12af280, mov=<value optimized out>) at
 libavformat/mov.c:1777
 #2  0x000000000049faca in mov_read_default (c=0x12ae620, pb=0x12b6680,
 atom=...) at libavformat/mov.c:306
 #3  0x00000000004a0165 in mov_read_moov (c=0x12ae620, pb=<value optimized
 out>, atom=...) at libavformat/mov.c:583
 #4  0x000000000049faca in mov_read_default (c=0x12ae620, pb=0x12b6680,
 atom=...) at libavformat/mov.c:306
 #5  0x00000000004a29ee in mov_read_header (s=0x12ae060, ap=<value
 optimized out>) at libavformat/mov.c:2395
 #6  0x00000000004f3ca0 in av_demuxer_open (ic=0x12ae060, ap=<value
 optimized out>) at libavformat/utils.c:481
 #7  0x000000000040d758 in opt_input_file (filename=0x7fffffffe28a
 "crash.mp4") at ffmpeg.c:3313
 #8  0x0000000000411a42 in parse_options (argc=3, argv=0x7fffffffde18,
 options=0x975020, parse_arg_function=0x410100 <opt_output_file>) at
 cmdutils.c:283
 #9  0x0000000000410b86 in main (argc=3, argv=0x7fffffffde18) at
 ffmpeg.c:4546
 (gdb) disass $pc-32 $pc+32
 Dump of assembler code from 0x4a2dcd to 0x4a2e0d:
 0x00000000004a2dcd <mov_build_index+43>:        mov    0x38(%r13),%rax
 0x00000000004a2dd1 <mov_build_index+47>:        neg    %r14d
 0x00000000004a2dd4 <mov_build_index+50>:        movslq %r14d,%r14
 0x00000000004a2dd7 <mov_build_index+53>:        test   %rax,%rax
 0x00000000004a2dda <mov_build_index+56>:        je     0x4a2e10
 <mov_build_index+110>
 0x00000000004a2ddc <mov_build_index+58>:        mov    0x28(%r13),%rcx
 0x00000000004a2de0 <mov_build_index+62>:        test   %rcx,%rcx
 0x00000000004a2de3 <mov_build_index+65>:        je     0x4a2e10
 <mov_build_index+110>
 0x00000000004a2de5 <mov_build_index+67>:        mov    0x4(%rax),%eax
 0x00000000004a2de8 <mov_build_index+70>:        mov    %eax,%edx
 0x00000000004a2dea <mov_build_index+72>:        sar    $0x1f,%edx
 0x00000000004a2ded <mov_build_index+75>:        idivl  0x4(%rcx)
 0x00000000004a2df0 <mov_build_index+78>:        cmp    $0x10,%eax
 0x00000000004a2df3 <mov_build_index+81>:        jle    0x4a2e10
 <mov_build_index+110>
 0x00000000004a2df5 <mov_build_index+83>:        movl   $0x1,0xc4(%r13)
 0x00000000004a2e00 <mov_build_index+94>:        movl   $0x1,0x138(%r15)
 0x00000000004a2e0b <mov_build_index+105>:       nopl   0x0(%rax,%rax,1)
 End of assembler dump.
 (gdb) info register
 rax            0x6      6
 rbx            0x12af280        19591808
 rcx            0x12b1700        19601152
 rdx            0x0      0
 rsi            0x1      1
 rdi            0x6      6
 rbp            0x12ae620        0x12ae620
 rsp            0x7fffffffd8b0   0x7fffffffd8b0
 r8             0x7fffffff       2147483647
 r9             0x1      1
 r10            0x32     50
 r11            0x26     38
 r12            0x12b10e0        19599584
 r13            0x12b10e0        19599584
 r14            0xfffffffffffffffa       -6
 r15            0x12b0be0        19598304
 rip            0x4a2ded 0x4a2ded <mov_build_index+75>
 eflags         0x10246  [ PF ZF IF RF ]
 cs             0x33     51
 ss             0x2b     43
 ds             0x0      0
 es             0x0      0
 fs             0x0      0
 gs             0x0      0
 fctrl          0x37f    895
 fstat          0x0      0
 ftag           0xffff   65535
 fiseg          0x0      0
 fioff          0x0      0
 foseg          0x0      0
 fooff          0x0      0
 fop            0x0      0
 mxcsr          0x9fe0   [ PE DAZ IM DM ZM OM UM PM FZ ]
 }}}

-- 
Ticket URL: <https://avcodec.org/trac/ffmpeg/ticket/223>
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