Re: [microblaze-uclinux] Kernel BUG (at scheduling maybe?)

[DeviPrasad Natesan <ndprasad@xxxxxxxxx>]

Did u use the latest compiler from the website
(http://www.itee.uq.edu.au/%7Ejwilliams/mblaze-uclinux/Toolchain/linux_binaries.html).
I had a same problem long time before and it got solved it by
upgrading the compiler. See
(http://www.itee.uq.edu.au/~listarch/microblaze-uclinux/archive/2005/10/msg00198.html)

- DeviPrasad

On 1/23/06, Kapelonis Kostis <kkapelon@xxxxxxxxxxxx> wrote:
> Hi all
>
> I am trying to run uClinux on a Virtex-II Pro board.
> I have been following the great PDF tutorial posted on the site.
>
> I reach to the point where the kernel boots and I get
>
> [..kernel booting]
> [..nothing seems to be wrong so far]
> RAMDISK driver initialized: 16 RAM disks of 4096K size 1024 blocksize
> VFS: Mounted root (romfs filesystem) readonly.
> Freeing init memory: 32k
> Mounting proc:
> Mounting var:
> Populating /var:
> Running local start scripts.
> xRemounting / (rw):
> xSetting hostname:
> kernel BUG at sched.c:687!
>
> Some things to notice:
>
> 1)The uclinux distribution was downloaded from CVS in December 2005
> Kernel is 2.4.x. I have not modified anything. The kernel sources
> are untouched.
>
> 2)I haven't found yet what are these strange "x" characters before
> "Remounting" and "Setting". These are the last two lines before the BUG
> line.
>
> 3)The error presented here is non-deterministic. I get this BUG line
> once or twice but 8/10 times the system just hangs after "Freeing init
> memory:32k".
>
> 4)My hardware design is correct. At least the memory test shows that DDR
> mem is OK. I download the kernel directly on DDR RAM with XMD and run it
> from there. There is no FLASH involved or any other external memory
> source.
>
> Any ideas on what is going on?
> If you need any more details I would be happy to provide them.
>
> Thank you in advance.
>
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>
>

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