Re: MTD crash with kernel 2.6.13

llandre
2005-10-07T13:36:11Z

Jeff,

thanks a lot for you help. I forwarded your message to David Woodhouse.
I hope this can help to find the bug.

--
llandre

DAVE Electronics System House - R&D Department
web: http://www.dave-tech.it
email: r&d2@dave-tech.it

> llandre,
> I had a similar problem with the 2.4.29 devfs code, the problem wasn't
> an uninitialized wait queue, although the system failure looked similiar
> to yours. The problem was actually an entry being added to the wait_queue
> call schedule(), and when rescheduled not removing itself from the
> wait_queue.
> Later when someone else called wake_up for the wait_queue, __wake_up_common
> paniced with a zero pointer.
>
> Maybe this situation is happening with the MTD code. I don't have 2.6.13
> to look at.
>
> Jeff Fellin
> RFL Electronics
> Jeff.Fellin@rflelect.com
> 973 334-3100, x 327
>
>
>
> llandre
> <r&d2@dave-tech.it> To: linux-mtd@lists.infradead.org
> Sent by: cc:
> linux-mtd-bounces@lists.in Subject: MTD crash with kernel 2.6.13
> fradead.org
>
>
> 10/07/2005 06:26
>
>
>
>
>
>
> Hi all,
>
> I encountered a problem with MTD with kernel 2.6.13 on ARM architecure.
> It crashes in __wake_up_common function when I try to erase a MTD
> partition on StrataFlash. I've already talked with David Woodhouse over
> #mtd channel and it really seems it is a bug in MTD code (he suggests it
> is due to an uninitialized wait queue). I tried to patch the kernel with
> latest MTD code but the crash still occurs. Here are available the full
> dumps of the console (with and without DEBUG_WAITQ flag):
> http://www.dave-tech.it/download/misc/sw/zefeer/zelk/mtd/
>
> Anybody experienced the same problem? Any suggestions about how to solve
> it?
>
>
> Thanks in advance,
> llandre
>
> DAVE Electronics System House - R&D Department
> web: http://www.dave-tech.it
> email: r&d2@dave-tech.it
>
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