linux-kernel - Re: [BUGFIX PATCH v3 0/4] arm: kprobes: Fix to prohibit probing on unsafe functions

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Message-ID: <20180508112503.GD16141@n2100.armlinux.org.uk>
Date:   Tue, 8 May 2018 12:25:03 +0100
From:   Russell King - ARM Linux <linux@...linux.org.uk>
To:     Masami Hiramatsu <mhiramat@...nel.org>
Cc:     Wang Nan <wangnan0@...wei.com>, Will Deacon <will.deacon@....com>,
        Jon Medhurst <tixy@...aro.org>,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        David Long <dave.long@...aro.org>, stable@...r.kernel.org
Subject: Re: [BUGFIX PATCH v3 0/4] arm: kprobes: Fix to prohibit probing on
 unsafe functions

On Fri, May 04, 2018 at 01:14:31PM +0900, Masami Hiramatsu wrote:
> Hi,
> 
> This is the 3rd version of bugfix series for kprobes on arm.
> This series fixes 4 different issues which I found.
> 
>  - Fix to use smp_processor_id() after disabling preemption.
>  - Prohibit probing on optimized_callback() for avoiding
>    recursive probe.
>  - Prohibit kprobes on do_undefinstr() by same reason.
>  - Prohibit kprobes on get_user() by same reason.
> 
> >From v2, I included another 2 bugfixes (1/4 and 2/4)
> which are not merged yet, and added "Cc: stable@...r.kernel.org",
> since there are obvious bugs.

Please submit them to the patch system, thanks.

> 
> Thanks,
> 
> ---
> 
> Masami Hiramatsu (4):
>       arm: kprobes: Fix to use get_kprobe_ctlblk after irq-disabed
>       arm: kprobes: Prohibit probing on optimized_callback
>       arm: kprobes: Prohibit kprobes on do_undefinstr
>       arm: kprobes: Prohibit kprobes on get_user functions
> 
> 
>  arch/arm/include/asm/assembler.h  |   10 ++++++++++
>  arch/arm/kernel/traps.c           |    5 ++++-
>  arch/arm/lib/getuser.S            |   10 ++++++++++
>  arch/arm/probes/kprobes/opt-arm.c |    4 +++-
>  4 files changed, 27 insertions(+), 2 deletions(-)
> 
> --
> Masami Hiramatsu (Linaro) <mhiramat@...nel.org>

-- 
RMK's Patch system: http://www.armlinux.org.uk/developer/patches/
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