Re: [BUGFIX PATCH v3 0/4] arm: kprobes: Fix to prohibit probing on unsafe functions
From: Russell King - ARM Linux
Date: Tue May 08 2018 - 07:25:34 EST
On Fri, May 04, 2018 at 01:14:31PM +0900, Masami Hiramatsu wrote:
> 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.
> 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>
RMK's Patch system: http://www.armlinux.org.uk/developer/patches/
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