[MPlayer-users] mga_vid division by zero bug

[Attila Kinali]

Hi,

I finaly found the bug 
(i musst been blind not to see the oops msg in syslog):

---schnipp---
divide error: 0000
CPU:    0
EIP:    0010:[<d889fa41>]
EFLAGS: 00010246
eax: 007fc000   ebx: 0000001b   ecx: 00000006   edx: 00000000
esi: 00000200   edi: 00000000   ebp: d2007f5c   esp: d2007f2c
ds: 0018   es: 0018   ss: 0018
Process mplayer (pid: 438, process nr: 58, stackpage=d2007000)
Stack: 08179990 00000021 00000001 c011499e 08179960 00060000 d88a0e70 00000180 
       00000001 00000180 0000001b 00000006 d2007f8c d889fe2e d88a0e40 00680000 
       082e544c 00000000 d1953d40 ffffffe7 80304a01 00000001 00000000 00000000 
Call Trace: [<c011499e>] [<c012ef64>] [<c010a0c0>] 
Code: f7 ff 89 c7 2b 4d fc 8d 14 bd 00 00 00 00 89 15 04 0e 8a d8 
---schnapp---

The problems are at:

#695: ifactor = ((sw-1)<<14)/(dw-1);

and 

#703: ifactor = ((sh-1)<<14)/(dh-1);

(dh - 1) resp (dw - 1) can and will be zero if the window is resized to 
height 1 or width 1.

I think that should help to explain the wired behaviour of mplayer :-)

		Attila Kinali

-- 
I am a moslem, i am a terrorist.