Kernel oops while duming user core.

[Rune Torgersen]

Nathan Lynch wrote:
> Hmm, this is the second report of 2.6.24 crashing in
> __flush_dcache_icache during a core dump; see:
> http://ozlabs.org/pipermail/linuxppc-dev/2007-December/048662.html
> 
> Is this easily recreatable?

Yes. I have a binary that will do this every time it is started (on this
particular system), 
only takes about 10 seconds before it dumps.

I was going to test HEAD of powerpc.git to see if it is still there.
I cannot test any earlier versions as our board port was done on 2.6.24.

Our older kernel port is 2.6.18 on arch/ppc, and it works just fine.


One potential clue:
> Unable to handle kernel paging request for data at address 0x48024000

this adddress is beyond our physical memory. We have 1GB of mem 
(CONFIG_HIGH_MEM enabled) so 0x3fff_ffff is the last valid address.
0x4000_0000 to 0x7fff_ffff are unused, 0x8000_0000 to 0x9fff_ffff is
used by PCI.