From: Mike Galbraith <efault@gmx.de>
To: Ingo Molnar <mingo@elte.hu>
Cc: Eric Paris <eparis@redhat.com>,
linux-kernel@vger.kernel.org, hpa@zytor.com,
a.p.zijlstra@chello.nl, tglx@linutronix.de
Subject: Re: [patch] Re: [regression bisect -next] BUG: using smp_processor_id() in preemptible [00000000] code: rmmod
Date: Thu, 29 Oct 2009 10:19:27 +0100 [thread overview]
Message-ID: <1256807967.7158.58.camel@marge.simson.net> (raw)
In-Reply-To: <20091029091411.GE22963@elte.hu>
On Thu, 2009-10-29 at 10:14 +0100, Ingo Molnar wrote:
> hm, the problem is kthread_bind(). It is rummaging around in scheduler
> internals without holding the runqueue lock - and this now got exposed.
> Even though it is operating on (supposedly ...) inactive tasks, the guts
> of that function should be moved into sched.c and it should be fixed to
> have proper locking.
Yeah, I was thinking that nobody should ever be able to hit that without
it being a bug.. but wimped out.
-Mike
next prev parent reply other threads:[~2009-10-29 9:19 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-10-29 2:42 [regression bisect -next] BUG: using smp_processor_id() in preemptible [00000000] code: rmmod Eric Paris
2009-10-29 8:39 ` [patch] " Mike Galbraith
2009-10-29 9:14 ` Ingo Molnar
2009-10-29 9:19 ` Mike Galbraith [this message]
2009-10-29 10:48 ` Mike Galbraith
2009-10-29 12:41 ` Eric Paris
2009-11-02 18:28 ` Ingo Molnar
2009-11-02 19:40 ` Mike Galbraith
2009-11-02 20:01 ` Ingo Molnar
2009-11-02 20:15 ` Mike Galbraith
2009-11-05 10:42 ` There is something with scheduler (was Re: [patch] Re: [regression bisect -next] BUG: using smp_processor_id() in preemptible [00000000] code: rmmod) Lai Jiangshan
2009-11-05 14:13 ` Mike Galbraith
2009-11-05 14:30 ` Mike Galbraith
2009-11-05 23:10 ` [patch] " Mike Galbraith
2009-11-06 2:31 ` Lai Jiangshan
2009-11-06 4:27 ` Mike Galbraith
2009-11-06 5:11 ` Mike Galbraith
2009-11-06 4:46 ` Mike Galbraith
2009-11-02 18:55 ` [tip:sched/urgent] sched: Fix kthread_bind() by moving the body of kthread_bind() to sched.c tip-bot for Mike Galbraith
2009-11-03 7:04 ` tip-bot for Mike Galbraith
2009-11-26 17:09 ` [regression bisect -next] BUG: using smp_processor_id() in preemptible [00000000] code: rmmod Leyendecker, Robert
2009-11-26 17:22 ` Peter Zijlstra
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