linux-kernel - Re: 2.6.28-mmotm1230 - BUG during 'shutdown -h'

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Message-Id: <200901031743.35578.rusty@rustcorp.com.au>
Date:	Sat, 3 Jan 2009 17:43:35 +1030
From:	Rusty Russell <rusty@...tcorp.com.au>
To:	Valdis.Kletnieks@...edu
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org
Subject: Re: 2.6.28-mmotm1230 - BUG during 'shutdown -h'

On Friday 02 January 2009 23:22:18 Valdis.Kletnieks@...edu wrote:
> 100% repeatable.  I haven't had a chance to bisect and track this down yet,
> though most of the obvious suspects are in either origin.patch or linux-next.patch
> so a bisect of -mmotm probably won't tell us much.

kernel/workqueue.c: In function ‘wq_cpu_map’:
kernel/workqueue.c:94: warning: pointer type mismatch in conditional expression

That's a problem for a start.  Looks like a merge bug.  Does removing the &
from in front of cpu_populated_map help?

static const struct cpumask *wq_cpu_map(struct workqueue_struct *wq)
{
	return is_wq_single_threaded(wq)
		 ? get_cpu_mask(singlethread_cpu) : &cpu_populated_map;
}

Cheers,
Rusty.
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