╭─root@linux-jiangxin in /home/jiangxin/experiment/fuzz/AFL/target/libtheora-1.1.1/examples 
╰$ gdb encoder_example
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Reading symbols from encoder_example...done.

(gdb) run ../fuzz/out/Master2/crashes/id:000000,sig:08,src:000000,op:flip1,pos:22 xxx.y4m

Compressing....                                                          pgl쭌躲£¿K+y*ªFၑﲘ።ڗܙ䆾V䔍ᤆ"h1^E³¯¹3⛟䪩Rp¨푳meɆ
/
Program received signal SIGFPE, Arithmetic exception.
fetch_and_process_audio (audio=0x83b010, audiopage=audiopage@entry=0x7fffffffda10, vo=vo@entry=0x7fffffffde10, vd=vd@entry=0x7fffffffdb20, vb=vb@entry=0x7fffffffdbb0, audioflag=audioflag@entry=0) at encoder_example.c:947
947	      int toread=4096/2/audio_ch;

(gdb) bt
#0  fetch_and_process_audio (audio=0x83b010, audiopage=audiopage@entry=0x7fffffffda10, vo=vo@entry=0x7fffffffde10, vd=vd@entry=0x7fffffffdb20, vb=vb@entry=0x7fffffffdbb0, audioflag=audioflag@entry=0) at encoder_example.c:947
#1  0x0000000000405a9b in main (argc=<optimized out>, argv=<optimized out>) at encoder_example.c:1754
(gdb) p audio_ch
$1 = 0