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Tue, 8 May 2018 07:25:28 -0400 Date: Tue, 8 May 2018 12:25:03 +0100 From: Russell King - ARM Linux To: Masami Hiramatsu Cc: Wang Nan , Will Deacon , Jon Medhurst , linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, David Long , stable@vger.kernel.org Subject: Re: [BUGFIX PATCH v3 0/4] arm: kprobes: Fix to prohibit probing on unsafe functions Message-ID: <20180508112503.GD16141@n2100.armlinux.org.uk> References: <152540727123.29650.13679359124038587629.stgit@devbox> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <152540727123.29650.13679359124038587629.stgit@devbox> User-Agent: Mutt/1.5.23 (2014-03-12) Sender: stable-owner@vger.kernel.org X-Mailing-List: stable@vger.kernel.org X-getmail-retrieved-from-mailbox: INBOX X-Mailing-List: linux-kernel@vger.kernel.org List-ID: 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@vger.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) -- RMK's Patch system: http://www.armlinux.org.uk/developer/patches/ FTTC broadband for 0.8mile line in suburbia: sync at 8.8Mbps down 630kbps up According to speedtest.net: 8.21Mbps down 510kbps up