linux-kernel - Re: [2.6.36-rc regression] occasional complete system hangs on sparc64 SMP

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Date:	Sat, 25 Sep 2010 19:34:49 +0200
From:	Mikael Pettersson <mikpe@...uu.se>
To:	David Miller <davem@...emloft.net>
Cc:	mikpe@...uu.se, sparclinux@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [2.6.36-rc regression] occasional complete system hangs on
 sparc64 SMP

David Miller writes:
 > From: Mikael Pettersson <mikpe@...uu.se>
 > Date: Thu, 23 Sep 2010 19:02:22 +0200
 > 
 > > The 2.6.36-rc kernels do appear to be solid on a UP Ultra5, but that
 > > one no longer does any gcc builds or tests, only kernel builds.
 > > 
 > > Any ideas, or do I have to try to bisect this?
 > 
 > I've seen this too, it's some kind of deadlock obviously.
 > 
 > Unfortunately I haven't gotten any further than you have in the
 > analysis.

Update: I got another hang with 2.6.36-rc5, then went back to
2.6.36-rc1 which hung twice.  SYSRQ would print help text and
the name of the command but not print anything useful on the
console.  Now trying some of the 2.6.35-git snapshots before -rc1.
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