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Groups > linux.kernel > #1640685

Re: [RFC][PATCH 3/5] kprobes: Take get_online_cpus() before taking jump_label_lock()

From Steven Rostedt <rostedt@goodmis.org>
Newsgroups linux.kernel
Subject Re: [RFC][PATCH 3/5] kprobes: Take get_online_cpus() before taking jump_label_lock()
Date 2017-05-12 20:50 +0200
Message-ID <tGnNv-gZ-9@gated-at.bofh.it> (permalink)
References <tGmy5-7Uc-3@gated-at.bofh.it> <tGmy7-7Uc-57@gated-at.bofh.it> <tGnDP-cz-3@gated-at.bofh.it>
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On Fri, 12 May 2017 11:39:11 -0700
"Paul E. McKenney" <paulmck@linux.vnet.ibm.com> wrote:

> On Fri, May 12, 2017 at 01:15:47PM -0400, Steven Rostedt wrote:
> > From: "Steven Rostedt (VMware)" <rostedt@goodmis.org>
> > 
> > jump_label_lock() is taken under get_online_cpus(). Make sure that kprobes
> > follows suit.
> > 
> > Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>  
> 
> The remaining three (3/5 through 5/5) look straightforward.  #4 appears
> to be the one needing the recursive get_online_cpus().

In deed it is.

Thanks for looking at these.

-- Steve

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Thread

[RFC][PATCH 0/5] perf/tracing/cpuhotplug: Fix locking order Steven Rostedt <rostedt@goodmis.org> - 2017-05-12 19:30 +0200
  [RFC][PATCH 5/5] perf: Grab event_mutex before taking get_online_cpus() Steven Rostedt <rostedt@goodmis.org> - 2017-05-12 19:30 +0200
  [RFC][PATCH 3/5] kprobes: Take get_online_cpus() before taking jump_label_lock() Steven Rostedt <rostedt@goodmis.org> - 2017-05-12 19:30 +0200
    Re: [RFC][PATCH 3/5] kprobes: Take get_online_cpus() before taking  jump_label_lock() "Paul E. McKenney" <paulmck@linux.vnet.ibm.com> - 2017-05-12 20:40 +0200
      Re: [RFC][PATCH 3/5] kprobes: Take get_online_cpus() before taking  jump_label_lock() Steven Rostedt <rostedt@goodmis.org> - 2017-05-12 20:50 +0200
    Re: [RFC][PATCH 3/5] kprobes: Take get_online_cpus() before taking  jump_label_lock() Masami Hiramatsu <mhiramat@kernel.org> - 2017-05-17 20:00 +0200
  Re: [RFC][PATCH 0/5] perf/tracing/cpuhotplug: Fix locking order "Paul E. McKenney" <paulmck@linux.vnet.ibm.com> - 2017-05-12 20:20 +0200
  Re: [RFC][PATCH 0/5] perf/tracing/cpuhotplug: Fix locking order Peter Zijlstra <peterz@infradead.org> - 2017-05-12 22:00 +0200
    Re: [RFC][PATCH 0/5] perf/tracing/cpuhotplug: Fix locking order Steven Rostedt <rostedt@goodmis.org> - 2017-05-12 22:20 +0200
    Re: [RFC][PATCH 0/5] perf/tracing/cpuhotplug: Fix locking order Steven Rostedt <rostedt@goodmis.org> - 2017-05-12 23:40 +0200
      Re: [RFC][PATCH 0/5] perf/tracing/cpuhotplug: Fix locking order "Paul E. McKenney" <paulmck@linux.vnet.ibm.com> - 2017-05-13 15:50 +0200
        Re: [RFC][PATCH 0/5] perf/tracing/cpuhotplug: Fix locking order Peter Zijlstra <peterz@infradead.org> - 2017-05-15 11:10 +0200
          Re: [RFC][PATCH 0/5] perf/tracing/cpuhotplug: Fix locking order "Paul E. McKenney" <paulmck@linux.vnet.ibm.com> - 2017-05-15 20:50 +0200
            Re: [RFC][PATCH 0/5] perf/tracing/cpuhotplug: Fix locking order Peter Zijlstra <peterz@infradead.org> - 2017-05-16 10:20 +0200
              Re: [RFC][PATCH 0/5] perf/tracing/cpuhotplug: Fix locking order "Paul E. McKenney" <paulmck@linux.vnet.ibm.com> - 2017-05-16 14:50 +0200
                Re: [RFC][PATCH 0/5] perf/tracing/cpuhotplug: Fix locking order "Paul E. McKenney" <paulmck@linux.vnet.ibm.com> - 2017-05-16 16:30 +0200
                Re: [RFC][PATCH 0/5] perf/tracing/cpuhotplug: Fix locking order Peter Zijlstra <peterz@infradead.org> - 2017-05-17 12:50 +0200
                Re: [RFC][PATCH 0/5] perf/tracing/cpuhotplug: Fix locking order "Paul E. McKenney" <paulmck@linux.vnet.ibm.com> - 2017-05-17 17:00 +0200
                Re: [RFC][PATCH 0/5] perf/tracing/cpuhotplug: Fix locking order "Paul E. McKenney" <paulmck@linux.vnet.ibm.com> - 2017-05-18 06:00 +0200
    Re: [RFC][PATCH 0/5] perf/tracing/cpuhotplug: Fix locking order Steven Rostedt <rostedt@goodmis.org> - 2017-05-15 21:10 +0200

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