linux-kernel - [GIT PULL] kprobes updates for v5.8

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Message-ID: <20200601130806.GA746506@gmail.com>
Date:   Mon, 1 Jun 2020 15:08:06 +0200
From:   Ingo Molnar <mingo@...nel.org>
To:     Linus Torvalds <torvalds@...ux-foundation.org>
Cc:     linux-kernel@...r.kernel.org,
        Peter Zijlstra <a.p.zijlstra@...llo.nl>,
        Thomas Gleixner <tglx@...utronix.de>,
        Borislav Petkov <bp@...en8.de>,
        Andrew Morton <akpm@...ux-foundation.org>
Subject: [GIT PULL] kprobes updates for v5.8

Linus,

Please pull the latest core/kprobes git tree from:

   git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git core-kprobes-2020-06-01

   # HEAD: 66e9b0717102507e64f638790eaece88765cc9e5 kprobes: Prevent probes in .noinstr.text section

Various kprobes updates, mostly centered around cleaning up the no-instrumentation
logic, instead of the current per debug facility blacklist, use the more generic
.noinstr.text approach, combined with a 'noinstr' marker for functions.

Also add instrumentation_begin()/end() to better manage the exact place in entry
code where instrumentation may be used.

Also add a kprobes blacklist for modules.

Signed-off-by: Ingo Molnar <mingo@...nel.org>
 Thanks,

	Ingo

------------------>
Masami Hiramatsu (4):
      kprobes: Lock kprobe_mutex while showing kprobe_blacklist
      kprobes: Support __kprobes blacklist in modules
      kprobes: Support NOKPROBE_SYMBOL() in modules
      samples/kprobes: Add __kprobes and NOKPROBE_SYMBOL() for handlers.

Thomas Gleixner (2):
      vmlinux.lds.h: Create section for protection against instrumentation
      kprobes: Prevent probes in .noinstr.text section


 arch/powerpc/kernel/vmlinux.lds.S   |  1 +
 include/asm-generic/sections.h      |  3 ++
 include/asm-generic/vmlinux.lds.h   | 10 +++++
 include/linux/compiler.h            | 53 +++++++++++++++++++++++
 include/linux/compiler_types.h      |  4 ++
 include/linux/module.h              |  8 ++++
 kernel/kprobes.c                    | 85 ++++++++++++++++++++++++++++++++++++-
 kernel/module.c                     | 10 +++++
 samples/kprobes/kprobe_example.c    |  6 ++-
 samples/kprobes/kretprobe_example.c |  2 +
 scripts/mod/modpost.c               |  2 +-
 11 files changed, 180 insertions(+), 4 deletions(-)