Re: [PATCH] kprobes: correct regs->ip value in post_hander()

From: Ananth N Mavinakayanahalli
Date: Wed Mar 19 2008 - 17:05:22 EST


On Tue, Mar 18, 2008 at 09:26:49AM -0500, Yakov Lerner wrote:
> From: "Yakov Lerner" <iler.ml@xxxxxxxxx>
>
> This patch corrects the value of regs->ip in post_handler(). Prior to
> this patch, post_handler() was given address meaningless to the user in
> regs->ip. The expected value is address of the next instruction to be
> executed after kprobed instruction. This patch simply swaps the order of
> post_handler() and resume_execution(). post_handler() now sees the
> corrected, expected value in regs->ip. post_handler() is now called after
> after resume_execution(), not before.
>
> Only x86 platform was tested. Arm arch needs no changes.
>
> Signed-off-by: Yakov Lerner <iler.ml@xxxxxxxxx>

Tested on powerpc.

Acked-by: Ananth N Mavinakayanahalli <ananth@xxxxxxxxxx>

Thanks Yakov!
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