[FFmpeg-trac] #1692(avfilter:new): Using atempo filter causes segfault

FFmpeg trac at avcodec.org
Tue Aug 28 13:27:59 CEST 2012


#1692: Using atempo filter causes segfault
------------------------------------+------------------------------------
             Reporter:  takis       |                    Owner:
                 Type:  defect      |                   Status:  new
             Priority:  normal      |                Component:  avfilter
              Version:  git-master  |               Resolution:
             Keywords:              |               Blocked By:
             Blocking:              |  Reproduced by developer:  0
Analyzed by developer:  0           |
------------------------------------+------------------------------------

Comment (by takis):

 {{{

 (gdb) disass $pc-32,$pc+32
 Dump of assembler code from 0xb59d10 to 0xb59d50:
    0x0000000000b59d10 <fft8_avx+112>:   vblendps $0x55,%ymm0,%ymm4,%ymm0
    0x0000000000b59d16 <fft8_avx+118>:   vsubps %ymm0,%ymm3,%ymm1
    0x0000000000b59d1a <fft8_avx+122>:   vaddps %ymm0,%ymm3,%ymm0
    0x0000000000b59d1e <fft8_avx+126>:   vmovaps %ymm0,(%rdi)
    0x0000000000b59d22 <fft8_avx+130>:   vmovaps %ymm1,0x20(%rdi)
    0x0000000000b59d27 <fft8_avx+135>:   retq
    0x0000000000b59d28 <fft8_avx+136>:   nopl   0x0(%rax,%rax,1)
 => 0x0000000000b59d30 <fft16_avx+0>:    vmovaps 0x40(%rdi),%ymm2
    0x0000000000b59d35 <fft16_avx+5>:    vmovaps 0x60(%rdi),%ymm3
    0x0000000000b59d3a <fft16_avx+10>:   vsubps %ymm3,%ymm2,%ymm7
    0x0000000000b59d3e <fft16_avx+14>:   vaddps %ymm3,%ymm2,%ymm2
    0x0000000000b59d42 <fft16_avx+18>:   vxorps 0x347196(%rip),%ymm7,%ymm7
 # 0xea0ee0 <ps_p1p1m1p1>
    0x0000000000b59d4a <fft16_avx+26>:   vshufps $0xbe,%ymm7,%ymm2,%ymm3
    0x0000000000b59d4f <fft16_avx+31>:   vshufps $0x44,%ymm7,%ymm2,%ymm2
 End of assembler dump.

 }}}

-- 
Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/1692#comment:7>
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