Re: [BUG] 2.6.23-rc3-mm1 Oops: Machine check, sig: 7 [#1]

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Andrew Morton writes:

> Dunno, it beats me.  powerpc booted OK for me.  Ben, have you been playing
> around in powerpc mmap code?  How come the oops claims it died at
> kernel_execve+0x8/0x14 but the call trace points up into the vma management
> code?

The exception c01 in kernel_execve is just the system call entry.  The
real problem is the machine check that happened in rb_insert_color,
called from __vma_link_rb.

However, a machine check is an imprecise exception, so whatever caused
the problem may have happened a little earlier than that.  Most likely
it is due to an attempt to access a physical address where nothing
exists.

Paul.
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