Re: __init poisoning for i386, too

[Andi Kleen]

William Lee Irwin III <wli@xxxxxxxxxxxxxx> writes:

> On Thu, Oct 07, 2004 at 12:18:55AM +0200, Pavel Machek wrote:
> > Overwrite __init section so calls to __init functions from normal code
> > are catched, reliably. I wonder if this should be configurable... but
> > it is configurable on x86-64 so I copied it. Please apply,
> 
> Any chance we could:
> (a) set the stuff to 0x0f0b so illegal instructions come of it; jumps are
> 	most often aligned to something > 16 bits anyway

0xcc is an int3, that already causes an oops.

> (b) poison __initdata, memsetting to some bit pattern oopsable to dereference

Would be a good idea yes. I will add it to x86-64.

-Andi
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