[PATCH -tip ] [BUGFIX] kprobes: Fix arch_prepare_kprobe to handle copy insn failures

[Jonathan Lebon]

Tested-by: Jonathan Lebon <jlebon@redhat.com>

Stress-tested overnight in a VM with no problems.

Jonathan

----- Original Message -----
From: "Steven Rostedt" <rostedt@goodmis.org>
To: "Masami Hiramatsu" <masami.hiramatsu.pt@hitachi.com>
Cc: "Ingo Molnar" <mingo@redhat.com>, linux-kernel@vger.kernel.org, "Ingo Molnar" <mingo@kernel.org>, "Frank Ch. Eigler" <fche@redhat.com>, systemtap@sourceware.org, "yrl pp-manager tt" <yrl.pp-manager.tt@hitachi.com>
Sent: Thursday, June 6, 2013 5:06:46 PM
Subject: Re: [PATCH -tip ] [BUGFIX] kprobes: Fix arch_prepare_kprobe to handle copy insn failures

On Wed, 2013-06-05 at 12:12 +0900, Masami Hiramatsu wrote:
> Fix arch_prepare_kprobe() to handle failures in copy instruction
> correctly. This fix is related to the previous fix: 8101376
> which made __copy_instruction return an error result if failed,
> but caller site was not updated to handle it. Thus, this is the
> other half of the bugfix.
> 
> This fix is also related to the following bug-report:
> 
>    https://bugzilla.redhat.com/show_bug.cgi?id=910649
> 
> Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
> Cc: Frank Ch. Eigler <fche@redhat.com>
> Cc: Steven Rostedt <rostedt@goodmis.org>

Acked-by: Steven Rostedt <rostedt@goodmis.org>

-- Steve

> Cc: Ingo Molnar <mingo@kernel.org>
> ---
>  arch/x86/kernel/kprobes/core.c |   14 ++++++++++----
>  1 file changed, 10 insertions(+), 4 deletions(-)
>