Re: [RFC] [PATCH x86 2/2] Cleanup do_int3

From: Srikar Dronamraju
Date: Fri Nov 18 2011 - 05:07:37 EST



> (2011/10/25 23:21), Srikar Dronamraju wrote:
> > Since there is a possibility of !KPROBES int3 listeners and since
> > DIE_TRAP is currently not being used by anybody, notify all listeners
> > with DIE_INT3.
>
> I'm not sure why this CONFIG_KPROBES dependency had been introduced,
> but it's the time to fix it. do_int3 should send DIE_INT3 always.
>
> Acked-by: Masami Hiramatsu <masami.hiramatsu.pt@xxxxxxxxxxx>
>
> Thank you!
>


Hi Ingo,

Is there a reason for not taking this patch?
Oleg, Masami, Alexander(who was the last to modify this code) have
all been in favour of this patch.


I didnt get any response from you for the other patch in this series
too.

--
Thanks and Regards
Srikar


> >
> > Signed-off-by: Ananth N Mavinakayanahalli <ananth@xxxxxxxxxx>
> > Signed-off-by: Srikar Dronamraju <srikar@xxxxxxxxxxxxxxxxxx>
> > ---
> > arch/x86/kernel/traps.c | 7 +------
> > 1 files changed, 1 insertions(+), 6 deletions(-)
> >
> > diff --git a/arch/x86/kernel/traps.c b/arch/x86/kernel/traps.c
> > index 6913369..c9a4be5 100644
> > --- a/arch/x86/kernel/traps.c
> > +++ b/arch/x86/kernel/traps.c
> > @@ -461,15 +461,10 @@ dotraplinkage void __kprobes do_int3(struct pt_regs *regs, long error_code)
> > == NOTIFY_STOP)
> > return;
> > #endif /* CONFIG_KGDB_LOW_LEVEL_TRAP */
> > -#ifdef CONFIG_KPROBES
> > +
> > if (notify_die(DIE_INT3, "int3", regs, error_code, 3, SIGTRAP)
> > == NOTIFY_STOP)
> > return;
> > -#else
> > - if (notify_die(DIE_TRAP, "int3", regs, error_code, 3, SIGTRAP)
> > - == NOTIFY_STOP)
> > - return;
> > -#endif
> >
> > preempt_conditional_sti(regs);
> > do_trap(3, SIGTRAP, "int3", regs, error_code, NULL);
> >
> > --
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>
>
> --
> Masami HIRAMATSU
> Software Platform Research Dept. Linux Technology Center
> Hitachi, Ltd., Yokohama Research Laboratory
> E-mail: masami.hiramatsu.pt@xxxxxxxxxxx
>

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