linux-kernel - Re: btrfs triggered lockdep WARN.

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Message-ID: <20130627170312.GA17728@redhat.com>
Date:	Thu, 27 Jun 2013 13:03:12 -0400
From:	Dave Jones <davej@...hat.com>
To:	Chris Mason <chris.mason@...ionio.com>
Cc:	Linux Kernel <linux-kernel@...r.kernel.org>,
	linux-btrfs@...r.kernel.org
Subject: Re: btrfs triggered lockdep WARN.

On Thu, Jun 27, 2013 at 11:38:57AM -0400, Chris Mason wrote:
 > >  > I really hope you don't already have CONFIG_DEBUG_PAGE_ALLOC turned on,
 > >  > maybe it will catch this?
 > > 
 > > I do. Though given this is lockdep complaining about what looks like
 > > memory corruption, it's probably not related.
 > 
 > Ok, could you please try this with some heavy memory pressure?  I'm
 > hoping to trigger a use-after-free that points us in the right
 > direction.

Have anything in particular in mind ? I tried a make -j on a kernel tree
in a loop, but nothing new is shaking out.

	Dave

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