From: Linus Torvalds <torvalds@linux-foundation.org>
Date: Thu, 7 Nov 2013 23:54:53 +0000 (+0900)
Subject: Merge tag 'ftrace-urgent-3.12-v2' of git://git.kernel.org/pub/scm/linux/kernel/git... 
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=6c86ae2928f9e4cbf0d5844f5fcfd549e3450b8c;p=openwrt%2Fstaging%2Fblogic.git

Merge tag 'ftrace-urgent-3.12-v2' of git://git./linux/kernel/git/rostedt/linux-trace

Pull perf/ftrace fix from Steven Rostedt:
 "Dave Jones's trinity program was able to enable the function tracer
  from a normal user account via the perf syscall "perf_event_open()".
  When I was able to reproduce it with trinity, I was able to track down
  exactly how it happened.

  I discovered that the check for whether the function tracepoint should
  be activated or not was using the "perf_paranoid_kernel()" check which
  by default, lets the user continue.  The user should not by default be
  able to enable function tracing.

  The fix is to use "perf_paranoid_tracepoint_raw()" which will not let
  the user enable function tracing.  This is a security fix as normal
  users should never be allowed to enable the function tracer"

* tag 'ftrace-urgent-3.12-v2' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
  perf/ftrace: Fix paranoid level for enabling function tracer
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6c86ae2928f9e4cbf0d5844f5fcfd549e3450b8c