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Re: [PATCH -tip v6 06/22] [BUGFIX] x86: Prohibit probing on memcpy/memset
- From: Jovi Zhangwei <jovi dot zhangwei at gmail dot com>
- To: Masami Hiramatsu <masami dot hiramatsu dot pt at hitachi dot com>
- Cc: Ingo Molnar <mingo at kernel dot org>, linux-arch at vger dot kernel dot org, Ananth N Mavinakayanahalli <ananth at in dot ibm dot com>, Sandeepa Prabhu <sandeepa dot prabhu at linaro dot org>, x86 at kernel dot org, lkml <linux-kernel at vger dot kernel dot org>, "Steven Rostedt (Red Hat)" <rostedt at goodmis dot org>, Ingo Molnar <mingo at redhat dot com>, systemtap at sourceware dot org, "H. Peter Anvin" <hpa at zytor dot com>, Thomas Gleixner <tglx at linutronix dot de>, "David S. Miller" <davem at davemloft dot net>
- Date: Thu, 19 Dec 2013 17:37:25 +0800
- Subject: Re: [PATCH -tip v6 06/22] [BUGFIX] x86: Prohibit probing on memcpy/memset
- Authentication-results: sourceware.org; auth=none
- References: <20131219090353 dot 14309 dot 15496 dot stgit at kbuild-fedora dot novalocal> <20131219090409 dot 14309 dot 25677 dot stgit at kbuild-fedora dot novalocal>
Hi Masami,
On Thu, Dec 19, 2013 at 5:04 PM, Masami Hiramatsu
<masami.hiramatsu.pt@hitachi.com> wrote:
> memcpy/memset functions are fundamental functions and
> those are involved in kprobe's exception handling.
> Prohibit probing on them to avoid kernel crash.
>
Would you please let me know the LKML link of that bugfix, I cannot
find it in my LKML fold.
No objection on this patch. :) just want to know more, It seems there
have no problem to probe memcpy in my box, maybe I didn't hit the
crash code path.
Thanks.
Jovi