From: Ingo Molnar <mingo@elte.hu>
To: Arjan van de Ven <arjan@infradead.org>
Cc: Daniel Walker <dwalker@mvista.com>,
linux-kernel@vger.kernel.org, linux-scsi@vger.kernel.org
Subject: Re: [BUG] scsi/io-elevator held lock freed.
Date: Tue, 4 Jul 2006 17:15:04 +0200 [thread overview]
Message-ID: <20060704151504.GA10779@elte.hu> (raw)
In-Reply-To: <1152026010.3109.66.camel@laptopd505.fenrus.org>
* Arjan van de Ven <arjan@infradead.org> wrote:
> On Tue, 2006-07-04 at 07:54 -0700, Daniel Walker wrote:
> > I got this during boot. I booted the same kernel several times, and only
> > saw it once. The kernel was 2.6.17-mm5 .
> >
> > Daniel
> >
> >
> > =========================
> > [ BUG: held lock freed! ]
> > -------------------------
> > swapper/1 is freeing memory f73a8580-f73a867f, with a lock still held there!
> > 2 locks held by swapper/1:
> > #0: (&shost->scan_mutex){--..}, at: [<c0419098>] mutex_lock+0x8/0x10
> > #1: (&eq->sysfs_lock){--..}, at: [<c0419098>] mutex_lock+0x8/0x10
>
> blargh.. it'd be more useful if lockdep actually printed which lock it
> is that it thinks is about to get freed.....
i think it's eq->sysfs_lock that is being freed here.
> this patch ought to make it do that; could you at least add this to
> your kernel?
>
> Ingo, is this the right approach?
yeah, that's OK.
Ingo
next prev parent reply other threads:[~2006-07-04 15:19 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-07-04 14:54 [BUG] scsi/io-elevator held lock freed Daniel Walker
2006-07-04 15:13 ` Arjan van de Ven
2006-07-04 15:15 ` Ingo Molnar [this message]
2006-07-04 15:24 ` Daniel Walker
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