LKML Archive on lore.kernel.org
 help / color / Atom feed
* [PATCH v2 0/4] arm64: kprobes: Update blacklist checking on arm64
@ 2019-01-15  6:23 Masami Hiramatsu
  2019-01-15  6:24 ` [PATCH v2 1/4] arm64: kprobes: Move extable address check into arch_prepare_kprobe() Masami Hiramatsu
                   ` (4 more replies)
  0 siblings, 5 replies; 16+ messages in thread
From: Masami Hiramatsu @ 2019-01-15  6:23 UTC (permalink / raw)
  To: Catalin Marinas, Will Deacon
  Cc: Masami Hiramatsu, Pratyush Anand, David A . Long,
	linux-arm-kernel, linux-kernel, James Morse

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.

Changes in v2:
 - [1/4] change description so that it make clear and add
         James' Reviewed-by.
 - [4/4] new patch.

Thank you,

---

Masami Hiramatsu (4):
      arm64: kprobes: Move extable address check into arch_prepare_kprobe()
      arm64: kprobes: Remove unneeded RODATA check
      arm64: kprobes: Move exception_text check in blacklist
      arm64: kprobes: Use arch_populate_kprobe_blacklist()


 arch/arm64/kernel/probes/kprobes.c |   49 ++++++++++++++++++------------------
 1 file changed, 24 insertions(+), 25 deletions(-)

--
Masami Hiramatsu (Linaro) <mhiramat@kernel.org>

^ permalink raw reply	[flat|nested] 16+ messages in thread

end of thread, back to index

Thread overview: 16+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
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 ` [PATCH v2 0/4] arm64: kprobes: Update blacklist checking on arm64 Will Deacon
2019-01-19 13:31   ` Masami Hiramatsu

LKML Archive on lore.kernel.org

Archives are clonable:
	git clone --mirror https://lore.kernel.org/lkml/0 lkml/git/0.git
	git clone --mirror https://lore.kernel.org/lkml/1 lkml/git/1.git
	git clone --mirror https://lore.kernel.org/lkml/2 lkml/git/2.git
	git clone --mirror https://lore.kernel.org/lkml/3 lkml/git/3.git
	git clone --mirror https://lore.kernel.org/lkml/4 lkml/git/4.git
	git clone --mirror https://lore.kernel.org/lkml/5 lkml/git/5.git
	git clone --mirror https://lore.kernel.org/lkml/6 lkml/git/6.git
	git clone --mirror https://lore.kernel.org/lkml/7 lkml/git/7.git

	# If you have public-inbox 1.1+ installed, you may
	# initialize and index your mirror using the following commands:
	public-inbox-init -V2 lkml lkml/ https://lore.kernel.org/lkml \
		linux-kernel@vger.kernel.org linux-kernel@archiver.kernel.org
	public-inbox-index lkml


Newsgroup available over NNTP:
	nntp://nntp.lore.kernel.org/org.kernel.vger.linux-kernel


AGPL code for this site: git clone https://public-inbox.org/ public-inbox