linux-kernel - [PATCH -tip v9 0/5] kprobes related bugfix

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Message-Id: <150172762859.27216.16741726568669538542.stgit@devbox>
Date:   Thu,  3 Aug 2017 11:33:58 +0900
From:   Masami Hiramatsu <mhiramat@...nel.org>
To:     Ingo Molnar <mingo@...nel.org>,
        Thomas Gleixner <tglx@...utronix.de>
Cc:     Francis Deslauriers <francis.deslauriers@...icios.com>,
        mathieu.desnoyers@...icios.com, Ingo Molnar <mingo@...hat.com>,
        "H . Peter Anvin" <hpa@...or.com>, x86@...nel.org,
        Masami Hiramatsu <mhiramat@...nel.org>,
        Ananth N Mavinakayanahalli <ananth@...ibm.com>,
        Anil S Keshavamurthy <anil.s.keshavamurthy@...el.com>,
        "David S . Miller" <davem@...emloft.net>,
        linux-kernel@...r.kernel.org,
        Yoshinori Sato <ysato@...rs.sourceforge.jp>,
        Chris Zankel <chris@...kel.net>,
        Max Filippov <jcmvbkbc@...il.com>,
        Mikael Starvik <starvik@...s.com>,
        Jesper Nilsson <jesper.nilsson@...s.com>,
        linux-cris-kernel@...s.com, linux-arch@...r.kernel.org
Subject: [PATCH -tip v9 0/5] kprobes related bugfix

Hi,

Here are the 9th version of the series to fix kprobes not
to optimize on the functions in irqentry text ([5/5]).
To check the irqentry text always, [4/5] makes irqentry
text section unconditional.

This involves some other cleanups on h8300, xtensa, and
cris ports, because those sources declare section 
start/end symbol as single characters, but generic
sections.h declares it as character arrays. So it leads
build errors if we apply [4/5].

Changes in v9
 - Add cris cleanup patch (3/5).

BTW, in this series I just give a minimum fix for
arch dependent code, since this is a series to fix
a bug in x86 optprobe. However, IMHO, we should
revisit these "local _stext/_etext references" and
replace it with just including asm/sections.h.
And also, I would like to expose is_kernel_text()
as a generic routine for arch dependent code
so that they can use it.

Thank you,

---

Masami Hiramatsu (5):
      h8300: mark _stext and _etext as char-arrays, not single char
      xtensa: mark _stext and _end as char-arrays, not single char
      cris: mark _stext and _end as char-arrays, not single char
      irq: Make irqentry text section unconditional
      [BUGFIX] kprobes/x86: Do not jump-optimize kprobes on irq entry code


 arch/arm/include/asm/traps.h         |    7 -------
 arch/arm64/include/asm/traps.h       |    7 -------
 arch/cris/arch-v32/mach-a3/arbiter.c |    4 ++--
 arch/cris/arch-v32/mach-fs/arbiter.c |    4 ++--
 arch/cris/kernel/traps.c             |    6 +++---
 arch/h8300/include/asm/traps.h       |    6 +++---
 arch/x86/entry/entry_64.S            |    9 ++-------
 arch/x86/kernel/kprobes/opt.c        |    9 ++++++---
 arch/x86/kernel/unwind_frame.c       |    2 --
 arch/xtensa/kernel/setup.c           |    6 +++---
 include/asm-generic/sections.h       |    4 ++++
 include/asm-generic/vmlinux.lds.h    |    8 --------
 include/linux/interrupt.h            |   14 +-------------
 13 files changed, 26 insertions(+), 60 deletions(-)

--
Masami Hiramatsu