Re: [PATCH] lockdep: fix oops in processing workqueue
From: Tejun Heo
Date: Tue May 15 2012 - 11:31:39 EST
On Tue, May 15, 2012 at 11:29:52AM -0400, Dave Jones wrote:
> On Tue, May 15, 2012 at 08:10:48AM -0700, Tejun Heo wrote:
> > >From 4d82a1debbffec129cc387aafa8f40b7bbab3297 Mon Sep 17 00:00:00 2001
> > From: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
> > Date: Tue, 15 May 2012 08:06:19 -0700
> > Under memory load, on x86_64, with lockdep enabled, the workqueue's
> > process_one_work() has been seen to oops in __lock_acquire(), barfing
> > on a 0xffffffff00000000 pointer in the lockdep_map's class_cache.
> can you elaborate what 'memory load' means here ?
> I'm curious if I can add something to my fuzzing tool to shake out bugs like this.
I think Hugh knows and can explain this much better than I do. Hugh?
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/