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Date: Fri, 21 Jul 2017 12:29:45 +0900
From: Masami Hiramatsu <mhiramat@kernel.org>
To: Linus Torvalds <torvalds@linux-foundation.org>
Cc: kernel test robot <xiaolong.ye@intel.com>,
        Ananth N Mavinakayanahalli <ananth@linux.vnet.ibm.com>,
        Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com>,
        Daniel Micay <danielmicay@gmail.com>,
        Kees Cook <keescook@chromium.org>, Arnd Bergmann <arnd@arndb.de>,
        Mark Rutland <mark.rutland@arm.com>, Daniel Axtens <dja@axtens.net>,
        Rasmus Villemoes <linux@rasmusvillemoes.dk>,
        Andy Shevchenko <andriy.shevchenko@linux.intel.com>,
        Chris Metcalf <cmetcalf@ezchip.com>,
        Thomas Gleixner <tglx@linutronix.de>, "H. Peter Anvin" <hpa@zytor.com>,
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        linux-arm-kernel@lists.infradead.org
Subject: Re: [lkp-robot] [include/linux/string.h] 6974f0c455:
 kernel_BUG_at_lib/string.c
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On Thu, 20 Jul 2017 11:41:38 -0700
Linus Torvalds <torvalds@linux-foundation.org> wrote:

> On Thu, Jul 20, 2017 at 8:51 AM, Masami Hiramatsu <mhiramat@kernel.org> wrote:
> >
> > Acked-by: Masami Hiramatsu <mhiramat@kernel.org>
> > Tested-by: Masami Hiramatsu <mhiramat@kernel.org>
> 
> Ok, I committed that patch as-is.
> 
> Other architectures may end up with the same issue, unless they really
> happen to have just a single instruction that fits in their
> kprobe_opcode_t type in their templates. But I didn't touch any of
> their (similar) code, since it will need testing.

Similar optprobe code are in arm and powerpc, arm does not support
FORTIFY_SOURCE (yet), and powerpc already fixed that same way.
So I'll make a same fix on arm before traped to the same issue.

Thank you,

-- 
Masami Hiramatsu <mhiramat@kernel.org>