On Tue, Aug 27, 2013 at 02:16:29PM +0200, Peter Zijlstra wrote:
> On Mon, Aug 26, 2013 at 03:03:04PM -0400, Steven Rostedt wrote:
> > > Is there some path through sys_perf_open_event that might be
> > > missing a capability check perhaps ?
> > >
> >
> > That's a question for Ingo, Peter or Jiri.
On Fri, Aug 30, 2013 at 05:59:36PM +0200, Peter Zijlstra wrote:
> On Fri, Aug 30, 2013 at 05:52:43PM +0200, Frederic Weisbecker wrote:
> > On Tue, Aug 27, 2013 at 02:16:29PM +0200, Peter Zijlstra wrote:
> > > On Mon, Aug 26, 2013 at 03:03:04PM -0400, Steven Rostedt wrote:
> > > > > Is there some
On Fri, Aug 30, 2013 at 05:52:43PM +0200, Frederic Weisbecker wrote:
> On Tue, Aug 27, 2013 at 02:16:29PM +0200, Peter Zijlstra wrote:
> > On Mon, Aug 26, 2013 at 03:03:04PM -0400, Steven Rostedt wrote:
> > > > Is there some path through sys_perf_open_event that might be
> > > > missing a
On Tue, Aug 27, 2013 at 02:16:29PM +0200, Peter Zijlstra wrote:
> On Mon, Aug 26, 2013 at 03:03:04PM -0400, Steven Rostedt wrote:
> > > Is there some path through sys_perf_open_event that might be
> > > missing a capability check perhaps ?
> > >
> >
> > That's a question for Ingo, Peter or Jiri.
On Tue, Aug 27, 2013 at 02:16:29PM +0200, Peter Zijlstra wrote:
On Mon, Aug 26, 2013 at 03:03:04PM -0400, Steven Rostedt wrote:
Is there some path through sys_perf_open_event that might be
missing a capability check perhaps ?
That's a question for Ingo, Peter or Jiri.
Its not
On Fri, Aug 30, 2013 at 05:52:43PM +0200, Frederic Weisbecker wrote:
On Tue, Aug 27, 2013 at 02:16:29PM +0200, Peter Zijlstra wrote:
On Mon, Aug 26, 2013 at 03:03:04PM -0400, Steven Rostedt wrote:
Is there some path through sys_perf_open_event that might be
missing a capability check
On Fri, Aug 30, 2013 at 05:59:36PM +0200, Peter Zijlstra wrote:
On Fri, Aug 30, 2013 at 05:52:43PM +0200, Frederic Weisbecker wrote:
On Tue, Aug 27, 2013 at 02:16:29PM +0200, Peter Zijlstra wrote:
On Mon, Aug 26, 2013 at 03:03:04PM -0400, Steven Rostedt wrote:
Is there some path through
On Tue, Aug 27, 2013 at 02:16:29PM +0200, Peter Zijlstra wrote:
On Mon, Aug 26, 2013 at 03:03:04PM -0400, Steven Rostedt wrote:
Is there some path through sys_perf_open_event that might be
missing a capability check perhaps ?
That's a question for Ingo, Peter or Jiri.
Its not
On Tue, Aug 27, 2013 at 07:58:12AM -0600, David Ahern wrote:
> On 8/27/13 7:10 AM, Steven Rostedt wrote:
> > On Mon, 26 Aug 2013 15:49:24 -0400
> > Dave Jones wrote:
> >
> >
> >> > Do you have /sys/kernel/debug with access permissions?
> >>
> >> Ah, yeah, that'll be it. Good catch.
>
On 8/27/13 7:10 AM, Steven Rostedt wrote:
On Mon, 26 Aug 2013 15:49:24 -0400
Dave Jones wrote:
> Do you have /sys/kernel/debug with access permissions?
Ah, yeah, that'll be it. Good catch.
Sorry for the false alarm Steve ;)
Yeah, but it still does not explain how perf got started. Perf
On Mon, 26 Aug 2013 15:49:24 -0400
Dave Jones wrote:
> > Do you have /sys/kernel/debug with access permissions?
>
> Ah, yeah, that'll be it. Good catch.
>
> Sorry for the false alarm Steve ;)
Yeah, but it still does not explain how perf got started. Perf requires
a sys_perf_event_open()
On Mon, Aug 26, 2013 at 03:03:04PM -0400, Steven Rostedt wrote:
> > Is there some path through sys_perf_open_event that might be
> > missing a capability check perhaps ?
> >
>
> That's a question for Ingo, Peter or Jiri.
Its not something I've looked at recently, git blames Jiri and fweisbec
On Mon, Aug 26, 2013 at 03:03:04PM -0400, Steven Rostedt wrote:
Is there some path through sys_perf_open_event that might be
missing a capability check perhaps ?
That's a question for Ingo, Peter or Jiri.
Its not something I've looked at recently, git blames Jiri and fweisbec
for most
On Mon, 26 Aug 2013 15:49:24 -0400
Dave Jones da...@redhat.com wrote:
Do you have /sys/kernel/debug with access permissions?
Ah, yeah, that'll be it. Good catch.
Sorry for the false alarm Steve ;)
Yeah, but it still does not explain how perf got started. Perf requires
a
On 8/27/13 7:10 AM, Steven Rostedt wrote:
On Mon, 26 Aug 2013 15:49:24 -0400
Dave Jones da...@redhat.com wrote:
Do you have /sys/kernel/debug with access permissions?
Ah, yeah, that'll be it. Good catch.
Sorry for the false alarm Steve ;)
Yeah, but it still does not explain how perf
On Tue, Aug 27, 2013 at 07:58:12AM -0600, David Ahern wrote:
On 8/27/13 7:10 AM, Steven Rostedt wrote:
On Mon, 26 Aug 2013 15:49:24 -0400
Dave Jones da...@redhat.com wrote:
Do you have /sys/kernel/debug with access permissions?
Ah, yeah, that'll be it. Good catch.
On Mon, Aug 26, 2013 at 01:43:15PM -0600, David Ahern wrote:
> On 8/26/13 12:29 PM, Dave Jones wrote:
> > On Mon, Aug 26, 2013 at 02:18:14PM -0400, Steven Rostedt wrote:
> > > On Mon, 26 Aug 2013 13:50:12 -0400
> > > Dave Jones wrote:
> > > >
> > > > This was triggered as a regular
On 8/26/13 12:29 PM, Dave Jones wrote:
On Mon, Aug 26, 2013 at 02:18:14PM -0400, Steven Rostedt wrote:
> On Mon, 26 Aug 2013 13:50:12 -0400
> Dave Jones wrote:
> >
> > This was triggered as a regular user fwiw.
> > I had not been running perf, or any other tracing. It was just left
On Mon, 26 Aug 2013 14:29:07 -0400
Dave Jones wrote:
> On Mon, Aug 26, 2013 at 02:18:14PM -0400, Steven Rostedt wrote:
> > On Mon, 26 Aug 2013 13:50:12 -0400
> > Dave Jones wrote:
> > >
> > > This was triggered as a regular user fwiw.
> > > I had not been running perf, or any other
On Mon, Aug 26, 2013 at 02:18:14PM -0400, Steven Rostedt wrote:
> On Mon, 26 Aug 2013 13:50:12 -0400
> Dave Jones wrote:
> >
> > This was triggered as a regular user fwiw.
> > I had not been running perf, or any other tracing. It was just left
> > fuzzing over the weekend with no
On Mon, 26 Aug 2013 13:50:12 -0400
Dave Jones wrote:
>
> This was triggered as a regular user fwiw.
> I had not been running perf, or any other tracing. It was just left
> fuzzing over the weekend with no interaction at all.
So you are telling me that ftrace was enabled by a regular user? If
On Mon, Aug 26, 2013 at 01:30:41PM -0400, Steven Rostedt wrote:
> > On Mon, Aug 26, 2013 at 10:58:38AM -0400, Dave Jones wrote:
> > > Another day, another rcu backtrace..
> > > This says rc6, but it's pretty darn close to rc7, I think it was running
> > > a build from Friday.
> >
> > Could
On Mon, 26 Aug 2013 09:29:28 -0700
"Paul E. McKenney" wrote:
> On Mon, Aug 26, 2013 at 10:58:38AM -0400, Dave Jones wrote:
> > Another day, another rcu backtrace..
> > This says rc6, but it's pretty darn close to rc7, I think it was running
> > a build from Friday.
>
> Could you please send
On Mon, Aug 26, 2013 at 10:58:38AM -0400, Dave Jones wrote:
> Another day, another rcu backtrace..
> This says rc6, but it's pretty darn close to rc7, I think it was running
> a build from Friday.
Could you please send your .config? Also, were you running ftrace,
perf, RCU event tracing, or
Another day, another rcu backtrace..
This says rc6, but it's pretty darn close to rc7, I think it was running
a build from Friday.
[260431.854524] ===
[260431.855485] [ INFO: suspicious RCU usage. ]
[260431.856437] 3.11.0-rc6+ #12 Not tainted
[260431.857377]
Another day, another rcu backtrace..
This says rc6, but it's pretty darn close to rc7, I think it was running
a build from Friday.
[260431.854524] ===
[260431.855485] [ INFO: suspicious RCU usage. ]
[260431.856437] 3.11.0-rc6+ #12 Not tainted
[260431.857377]
On Mon, Aug 26, 2013 at 10:58:38AM -0400, Dave Jones wrote:
Another day, another rcu backtrace..
This says rc6, but it's pretty darn close to rc7, I think it was running
a build from Friday.
Could you please send your .config? Also, were you running ftrace,
perf, RCU event tracing, or what?
On Mon, 26 Aug 2013 09:29:28 -0700
Paul E. McKenney paul...@linux.vnet.ibm.com wrote:
On Mon, Aug 26, 2013 at 10:58:38AM -0400, Dave Jones wrote:
Another day, another rcu backtrace..
This says rc6, but it's pretty darn close to rc7, I think it was running
a build from Friday.
Could you
On Mon, Aug 26, 2013 at 01:30:41PM -0400, Steven Rostedt wrote:
On Mon, Aug 26, 2013 at 10:58:38AM -0400, Dave Jones wrote:
Another day, another rcu backtrace..
This says rc6, but it's pretty darn close to rc7, I think it was running
a build from Friday.
Could you please
On Mon, 26 Aug 2013 13:50:12 -0400
Dave Jones da...@redhat.com wrote:
This was triggered as a regular user fwiw.
I had not been running perf, or any other tracing. It was just left
fuzzing over the weekend with no interaction at all.
So you are telling me that ftrace was enabled by a regular
On Mon, Aug 26, 2013 at 02:18:14PM -0400, Steven Rostedt wrote:
On Mon, 26 Aug 2013 13:50:12 -0400
Dave Jones da...@redhat.com wrote:
This was triggered as a regular user fwiw.
I had not been running perf, or any other tracing. It was just left
fuzzing over the weekend with no
On Mon, 26 Aug 2013 14:29:07 -0400
Dave Jones da...@redhat.com wrote:
On Mon, Aug 26, 2013 at 02:18:14PM -0400, Steven Rostedt wrote:
On Mon, 26 Aug 2013 13:50:12 -0400
Dave Jones da...@redhat.com wrote:
This was triggered as a regular user fwiw.
I had not been running perf,
On 8/26/13 12:29 PM, Dave Jones wrote:
On Mon, Aug 26, 2013 at 02:18:14PM -0400, Steven Rostedt wrote:
On Mon, 26 Aug 2013 13:50:12 -0400
Dave Jones da...@redhat.com wrote:
This was triggered as a regular user fwiw.
I had not been running perf, or any other tracing. It was just
On Mon, Aug 26, 2013 at 01:43:15PM -0600, David Ahern wrote:
On 8/26/13 12:29 PM, Dave Jones wrote:
On Mon, Aug 26, 2013 at 02:18:14PM -0400, Steven Rostedt wrote:
On Mon, 26 Aug 2013 13:50:12 -0400
Dave Jones da...@redhat.com wrote:
This was triggered as a regular
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