Re: rcu_read_lock() used illegally while idle!

2013-05-28 Thread Steven Rostedt
On Tue, 2013-05-28 at 16:13 -0400, Dave Jones wrote: > On Sat, May 25, 2013 at 02:20:04PM -0400, Steven Rostedt wrote: > > On Sat, 2013-05-25 at 09:59 -0400, Dave Jones wrote: > > > On Fri, May 24, 2013 at 03:23:40PM -0400, Steven Rostedt wrote: > > > > On Fri, 2013-05-24 at 10:23 -0400, Dave J

Re: rcu_read_lock() used illegally while idle!

2013-05-28 Thread Dave Jones
On Sat, May 25, 2013 at 02:20:04PM -0400, Steven Rostedt wrote: > On Sat, 2013-05-25 at 09:59 -0400, Dave Jones wrote: > > On Fri, May 24, 2013 at 03:23:40PM -0400, Steven Rostedt wrote: > > > On Fri, 2013-05-24 at 10:23 -0400, Dave Jones wrote: > > > > > > > .config: http://paste.fedorapr

Re: rcu_read_lock() used illegally while idle!

2013-05-26 Thread Jiri Olsa
On Sat, May 25, 2013 at 02:20:04PM -0400, Steven Rostedt wrote: > On Sat, 2013-05-25 at 09:59 -0400, Dave Jones wrote: > > On Fri, May 24, 2013 at 03:23:40PM -0400, Steven Rostedt wrote: > > > On Fri, 2013-05-24 at 10:23 -0400, Dave Jones wrote: > > > > > > > .config: http://paste.fedoraproject

Re: rcu_read_lock() used illegally while idle!

2013-05-25 Thread Steven Rostedt
On Sat, 2013-05-25 at 09:59 -0400, Dave Jones wrote: > On Fri, May 24, 2013 at 03:23:40PM -0400, Steven Rostedt wrote: > > On Fri, 2013-05-24 at 10:23 -0400, Dave Jones wrote: > > > > > .config: http://paste.fedoraproject.org/14281/94052971/raw/ > > > > > > trace shows the problem process wa

Re: rcu_read_lock() used illegally while idle!

2013-05-25 Thread Dave Jones
On Fri, May 24, 2013 at 03:23:40PM -0400, Steven Rostedt wrote: > On Fri, 2013-05-24 at 10:23 -0400, Dave Jones wrote: > > > .config: http://paste.fedoraproject.org/14281/94052971/raw/ > > > > trace shows the problem process was 'cc1', so I was likely building a > > kernel > > at the time

Re: rcu_read_lock() used illegally while idle!

2013-05-24 Thread Dave Jones
On Fri, May 24, 2013 at 03:23:40PM -0400, Steven Rostedt wrote: > On Fri, 2013-05-24 at 10:23 -0400, Dave Jones wrote: > > > .config: http://paste.fedoraproject.org/14281/94052971/raw/ > > > > trace shows the problem process was 'cc1', so I was likely building a > > kernel > > at the time

Re: rcu_read_lock() used illegally while idle!

2013-05-24 Thread Steven Rostedt
On Fri, 2013-05-24 at 10:23 -0400, Dave Jones wrote: > .config: http://paste.fedoraproject.org/14281/94052971/raw/ > > trace shows the problem process was 'cc1', so I was likely building a kernel > at the time. There was also a trinity run going on in the background. > > cmdline: nothing specia

Re: rcu_read_lock() used illegally while idle!

2013-05-24 Thread Dave Jones
On Fri, May 24, 2013 at 09:46:20AM -0400, Steven Rostedt wrote: > > > This looks to be the caused by the same issue that this patch fixes: > > > > > > https://lkml.org/lkml/2013/5/10/537 > > > > > > The schedule_user() was traced, and the preempt_enable_no_trace() that > > > the func

Re: rcu_read_lock() used illegally while idle!

2013-05-24 Thread Steven Rostedt
On Thu, 2013-05-23 at 12:40 -0400, Dave Jones wrote: > On Wed, May 22, 2013 at 08:49:18AM -0400, Steven Rostedt wrote: > > > > === > > > [ INFO: suspicious RCU usage. ] > > > 3.10.0-rc2+ #1 Not tainted > > > --- > > > include/linux/rcupd

Re: rcu_read_lock() used illegally while idle!

2013-05-23 Thread Dave Jones
On Wed, May 22, 2013 at 08:49:18AM -0400, Steven Rostedt wrote: > > === > > [ INFO: suspicious RCU usage. ] > > 3.10.0-rc2+ #1 Not tainted > > --- > > include/linux/rcupdate.h:771 rcu_read_lock() used illegally while idle! > > other inf

Re: rcu_read_lock() used illegally while idle!

2013-05-22 Thread Steven Rostedt
On Wed, 2013-05-22 at 02:36 -0700, Paul E. McKenney wrote: > On Tue, May 21, 2013 at 01:31:00PM -0400, Dave Jones wrote: > > Back from vacation, and breaking stuff already :) > > > > -rc2, plus some small local mods that shouldn't be a cause. > > Hmmm... I thought that ftrace already took care t

Re: rcu_read_lock() used illegally while idle!

2013-05-22 Thread Paul E. McKenney
On Tue, May 21, 2013 at 01:31:00PM -0400, Dave Jones wrote: > Back from vacation, and breaking stuff already :) > > -rc2, plus some small local mods that shouldn't be a cause. Hmmm... I thought that ftrace already took care to let RCU know that the CPU should be considered non-idle before using