* 2.6.3-mmX locks up reading scratched SVCD
@ 2004-02-27 9:46 Boszormenyi Zoltan
2004-02-27 9:59 ` Jens Axboe
0 siblings, 1 reply; 3+ messages in thread
From: Boszormenyi Zoltan @ 2004-02-27 9:46 UTC (permalink / raw)
To: linux-kernel
Hi,
I have a scratched SVCD and reading it back with vcdimager-0.7.14
locks up the machine completely. I tried it with kernels is 2.6.3-mm[1234].
I have not tried older kernel.
A flawless SVCD can be read back. I also tried reading back a bad overburned SVCD,
(cdrdao-1.1.8 reported error at the end) and it also locked up the machine.
I fixated this disk, tried reading back -> lockup.
Two IDE CD-RWs produce the same effect: LG 52/24/52 and Sony 48/24/48.
Something must be bad in the ide-cd driver, it should at least report an
error instead of locking up.
--
Best regards,
Zoltán Böszörményi
---------------------
What did Hussein say about his knife?
One in Bush worth two in the hand.
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: 2.6.3-mmX locks up reading scratched SVCD
2004-02-27 9:46 Boszormenyi Zoltan
@ 2004-02-27 9:59 ` Jens Axboe
0 siblings, 0 replies; 3+ messages in thread
From: Jens Axboe @ 2004-02-27 9:59 UTC (permalink / raw)
To: Boszormenyi Zoltan; +Cc: linux-kernel
On Fri, Feb 27 2004, Boszormenyi Zoltan wrote:
> Hi,
>
> I have a scratched SVCD and reading it back with vcdimager-0.7.14
> locks up the machine completely. I tried it with kernels is 2.6.3-mm[1234].
> I have not tried older kernel.
>
> A flawless SVCD can be read back. I also tried reading back a bad
> overburned SVCD,
> (cdrdao-1.1.8 reported error at the end) and it also locked up the machine.
> I fixated this disk, tried reading back -> lockup.
> Two IDE CD-RWs produce the same effect: LG 52/24/52 and Sony 48/24/48.
> Something must be bad in the ide-cd driver, it should at least report an
> error instead of locking up.
With damaged media, the problem is often the hardware locking up. In
that case there's really not much the kernel can do. That said, does the
keyboard LED's blink when the machine hangs?
--
Jens Axboe
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: 2.6.3-mmX locks up reading scratched SVCD
@ 2004-02-27 10:24 Boszormenyi Zoltan
0 siblings, 0 replies; 3+ messages in thread
From: Boszormenyi Zoltan @ 2004-02-27 10:24 UTC (permalink / raw)
To: linux-kernel
> On Fri, Feb 27 2004, Boszormenyi Zoltan wrote:
>> Hi,
>>
>> I have a scratched SVCD and reading it back with vcdimager-0.7.14
>> locks up the machine completely. I tried it with kernels is 2.6.3-mm[1234].
>> I have not tried older kernel.
>>
>> A flawless SVCD can be read back. I also tried reading back a bad
>> overburned SVCD,
>> (cdrdao-1.1.8 reported error at the end) and it also locked up the machine.
>> I fixated this disk, tried reading back -> lockup.
>> Two IDE CD-RWs produce the same effect: LG 52/24/52 and Sony 48/24/48.
>> Something must be bad in the ide-cd driver, it should at least report an
>> error instead of locking up.
>
> With damaged media, the problem is often the hardware locking up. In
> that case there's really not much the kernel can do. That said, does the
> keyboard LED's blink when the machine hangs?
>
> --
> Jens Axboe
No, they do not. Numlock is not responding. The CD-RW drives were not locked up.
I already experienced drive lockups earlier, the eject button does not respond,
the LED on one of the drives changes to red (instead of green -> normal operation
or orange -> writing)
In the meantime I was busy compiling libcddb-0.9.4, libcdio-0.66
and vcdimager-0.7.20. I am trying to read the CDs back with it,
the changelog mentions memleak fixes.
(several minutes later) Hm, it finished now, the overburned
SVCD is read back, it's about 20MB shorter than the original mpeg.
I got this error:
$ vcdxrip -C /dev/cdrom -p -v
!ASSERT: file mpeg.c: line 509 (_analyze_pes_header): assertion failed: (vcd_bitvec_peek_bits (buf, pos2, 8) == 0x0f)
Terminated
Somehow I expected that. So vcdimager-0.7.14 is faulty, the machine
lockup was in fact an OOM. Sorry for the noise.
--
Best regards,
Zoltán Böszörményi
---------------------
What did Hussein say about his knife?
One in Bush worth two in the hand.
^ permalink raw reply [flat|nested] 3+ messages in thread
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