linux-kernel - Re: Random scheduler/unaligned accesses crashes with perf lock events on sparc 64

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Date:	Sun, 04 Apr 2010 18:00:57 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	fweisbec@...il.com
Cc:	sparclinux@...r.kernel.org, linux-kernel@...r.kernel.org,
	mingo@...e.hu, acme@...hat.com, a.p.zijlstra@...llo.nl,
	paulus@...ba.org
Subject: Re: Random scheduler/unaligned accesses crashes with perf lock
 events on sparc 64

From: Frederic Weisbecker <fweisbec@...il.com>
Date: Sun, 4 Apr 2010 14:21:19 +0200

> Forgot the config, it's in attachment.

I get them too when even trying to use the function tracer in some
simple way.  They occur in random places and eventually the entire
machine wedges and is unusuable.

I suspect there is some bug that ends up corrupting memory, so I
started trying to debug this last night when I first saw it.

I'll let you know if I make any progress.
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