From: Will Deacon <will.deacon@arm.com>
To: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Pratyush Anand <panand@redhat.com>,
Catalin Marinas <catalin.marinas@arm.com>,
linux-kernel <linux-kernel@vger.kernel.org>,
James Morse <james.morse@arm.com>,
"David A . Long" <dave.long@linaro.org>,
linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH v2 0/4] arm64: kprobes: Update blacklist checking on arm64
Date: Wed, 16 Jan 2019 13:40:07 +0000 [thread overview]
Message-ID: <20190116134007.GA15255@fuggles.cambridge.arm.com> (raw)
In-Reply-To: <154753341900.31541.8135985235882849464.stgit@devbox>
Hi Masami,
On Tue, Jan 15, 2019 at 03:23:39PM +0900, Masami Hiramatsu wrote:
> Hello,
>
> Here is the v2 series of update of the kprobe blacklist
> checking on arm64.
>
> I found that some blacklist checking code were mis-placed in
> arch_prepare_kprobe() and arch_within_kprobe_blacklist().
> Since the blacklist just filters by symbol, smaller than the
> symbol, like extable must be checked in arch_prepare_kprobe().
> Also, all function (symbol) level check must be done by blacklist.
>
> For arm64, it checks the extable entry address in blacklist
> and exception/irqentry function in arch_prepare_kprobe().
> And, RODATA check is unneeded since kernel/kprobes.c
> already ensures the probe address is in kernel-text area.
>
> In v2, I updated [1/4]'s description and added James'
> Reviewed-by. Also, in this version, I added a patch which
> uses arch_populate_kprobe_blacklist() instead of
> arch_within_kprobe_blacklist() so that user can see the full
> list of blacklisted symbols under the debugfs.
Assuming these are targetting the arm64 tree, are you intending to get them
merged for 5.0?
Will
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next prev parent reply other threads:[~2019-01-16 13:40 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-01-15 6:23 [PATCH v2 0/4] arm64: kprobes: Update blacklist checking on arm64 Masami Hiramatsu
2019-01-15 6:24 ` [PATCH v2 1/4] arm64: kprobes: Move extable address check into arch_prepare_kprobe() Masami Hiramatsu
2019-01-15 6:24 ` [PATCH v2 2/4] arm64: kprobes: Remove unneeded RODATA check Masami Hiramatsu
2019-01-15 11:20 ` Mark Rutland
2019-01-15 6:25 ` [PATCH v2 3/4] arm64: kprobes: Move exception_text check in blacklist Masami Hiramatsu
2019-01-21 12:08 ` James Morse
2019-01-15 6:25 ` [PATCH v2 4/4] arm64: kprobes: Use arch_populate_kprobe_blacklist() Masami Hiramatsu
2019-01-21 12:20 ` James Morse
2019-01-21 13:25 ` Masami Hiramatsu
2019-02-08 9:15 ` Will Deacon
2019-02-11 13:10 ` Masami Hiramatsu
2019-02-11 15:58 ` Will Deacon
2019-02-11 16:05 ` Marc Zyngier
2019-02-12 15:28 ` Masami Hiramatsu
2019-01-16 13:40 ` Will Deacon [this message]
2019-01-19 13:31 ` [PATCH v2 0/4] arm64: kprobes: Update blacklist checking on arm64 Masami Hiramatsu
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