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Message-ID: <20170525111802.53105528@vmware.local.home>
Date: Thu, 25 May 2017 11:18:02 -0400
From: Steven Rostedt <rostedt@...dmis.org>
To: Masami Hiramatsu <mhiramat@...nel.org>
Cc: Thomas Gleixner <tglx@...utronix.de>,
Kees Cook <keescook@...omium.org>,
LKML <linux-kernel@...r.kernel.org>, x86@...nel.org,
"Luis R. Rodriguez" <mcgrof@...nel.org>,
Peter Zijlstra <peterz@...radead.org>
Subject: Re: [PATCH] x86/ftrace: Make sure that ftrace trampolines are not
RWX
On Thu, 25 May 2017 19:34:43 +0900
Masami Hiramatsu <mhiramat@...nel.org> wrote:
> OK, I've ensured that following command hits same BUG.
>
> grep t /proc/kallsyms | cut -f3 -d" " | grep -v .*\\..* | \
> head -n 256 | while read i; do echo p $i+5 ; done >
> tracing/kprobe_events
>
> echo 1 > tracing/events/kprobes/enable
> echo 0 > tracing/events/kprobes/enable
> echo > tracing/kprobe_events
> sleep 5
Hi Masami,
Can you add a selftest that checks this too?
Thanks!
-- Steve
>
> I'll send a bugfix asap.
>
> Thank,
>
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