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

[Russell King - ARM Linux]

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@xxxxxxxxxxxxxxx",
> 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@xxxxxxxxxx>

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