Re: [PATCH for review] [145/145] i386: Disallow kprobes on NMI handlers

From: Andi Kleen
Date: Fri Aug 11 2006 - 02:52:28 EST


On Friday 11 August 2006 08:37, Chuck Ebbert wrote:
> In-Reply-To: <20060810193745.DBBAA13B8E@xxxxxxxxxxxxx>
>
> On Thu, 10 Aug 2006 21:37:45 +0200, Andi Kleen wrote:
>
> > --- linux.orig/arch/i386/kernel/entry.S
> > +++ linux/arch/i386/kernel/entry.S
> > @@ -725,7 +725,7 @@ debug_stack_correct:
> > * check whether we got an NMI on the debug path where the debug
> > * fault happened on the sysenter path.
> > */
> > -ENTRY(nmi)
> > +KPROBE_ENTRY(nmi)
> > RING0_INT_FRAME
> > pushl %eax
> > CFI_ADJUST_CFA_OFFSET 4
>
> Needs .popsection at the end of the NMI code.

This is fixed up in a later patch I think.
i386: KPROBE_ENTRY ends up putting code into .fixup


-andi
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