From: Steven Rostedt <rostedt@goodmis.org>
To: Peter Zijlstra <peterz@infradead.org>
Cc: LKML <linux-kernel@vger.kernel.org>,
Ingo Molnar <mingo@kernel.org>,
Preeti U Murthy <preeti@linux.vnet.ibm.com>,
svaidy@linux.vnet.ibm.com, vincent.guittot@linaro.org,
bitbucket@online.de, benh@kernel.crashing.org, anton@samba.org,
Morten.Rasmussen@arm.com, pjt@google.com, mikey@neuling.org,
Linus Torvalds <torvalds@linux-foundation.org>
Subject: Re: [BUG] in sched fair on v3.13-rc1+ doing hotplug
Date: Wed, 27 Nov 2013 09:08:45 -0500 [thread overview]
Message-ID: <20131127090845.0d728946@gandalf.local.home> (raw)
In-Reply-To: <20131127132243.GD10022@twins.programming.kicks-ass.net>
On Wed, 27 Nov 2013 14:22:43 +0100
Peter Zijlstra <peterz@infradead.org> wrote:
> On Wed, Nov 27, 2013 at 08:13:45AM -0500, Steven Rostedt wrote:
> > atomic_inc(&sd->groups->sgp->nr_busy_cpus); <<---- BUG
> > unlock:
> > rcu_read_unlock();
> > }
>
> tip/sched/urgent has this one:
>
> ---
> commit 42eb088ed246a5a817bb45a8b32fe234cf1c0f8b
> Author: Peter Zijlstra <peterz@infradead.org>
> Date: Tue Nov 19 16:41:49 2013 +0100
>
> sched: Avoid NULL dereference on sd_busy
After applying this patch, the bug does go away.
Thanks!
-- Steve
prev parent reply other threads:[~2013-11-27 14:09 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-11-27 13:13 Steven Rostedt
2013-11-27 13:22 ` Peter Zijlstra
2013-11-27 14:08 ` Steven Rostedt [this message]
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